CN108768374B - Simple wall single-live-wire touch switch circuit - Google Patents
Simple wall single-live-wire touch switch circuit Download PDFInfo
- Publication number
- CN108768374B CN108768374B CN201810806748.9A CN201810806748A CN108768374B CN 108768374 B CN108768374 B CN 108768374B CN 201810806748 A CN201810806748 A CN 201810806748A CN 108768374 B CN108768374 B CN 108768374B
- Authority
- CN
- China
- Prior art keywords
- circuit
- power supply
- touch
- voltage
- field effect
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 65
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 53
- 230000005669 field effect Effects 0.000 claims description 88
- 239000003990 capacitor Substances 0.000 claims description 73
- 238000002955 isolation Methods 0.000 claims description 50
- 238000001514 detection method Methods 0.000 claims description 37
- 238000007599 discharging Methods 0.000 claims description 30
- 238000001914 filtration Methods 0.000 claims description 21
- 238000004146 energy storage Methods 0.000 claims description 18
- 230000010354 integration Effects 0.000 claims description 18
- 230000001360 synchronised effect Effects 0.000 claims description 16
- 230000000903 blocking effect Effects 0.000 claims description 12
- 230000035945 sensitivity Effects 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000006641 stabilisation Effects 0.000 claims description 4
- 238000011105 stabilization Methods 0.000 claims description 4
- 230000002441 reversible effect Effects 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 230000001939 inductive effect Effects 0.000 description 3
- 102100039435 C-X-C motif chemokine 17 Human genes 0.000 description 2
- 101000889048 Homo sapiens C-X-C motif chemokine 17 Proteins 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/962—Capacitive touch switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/16—Modifications for eliminating interference voltages or currents
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/0081—Power supply means, e.g. to the switch driver
Landscapes
- Electronic Switches (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention relates to a simple wall single-live-wire touch switch circuit, which is characterized in that: the touch trigger circuit comprises a switch main circuit, a main direct current power circuit and a main touch trigger unit; the main switch circuit comprises two external connection terminals of the main switch circuit, a bidirectional thyristor and a trigger circuit thereof, wherein the bidirectional thyristor forms an electronic switch, the bidirectional thyristor is connected between the two external connection terminals, and the main direct current power supply circuit is formed by a direct current linear voltage stabilizing circuit. According to the invention, the on-off of a bidirectional thyristor in a switch main circuit is controlled by changing the breakdown voltage values of two ends of an output load of a linear voltage stabilizing circuit; through changing the charge and discharge of specific electric capacity, realize the double control function, circuit design is simpler, and no-load current is little, and interference killing feature is strong, need not to adopt the mode of code to distinguish the signal, and the bulk cost of product greatly reduces, and it is more convenient to use.
Description
Technical Field
The invention relates to a wall touch switch control circuit, in particular to a single-live-wire simple wall single-live-wire touch switch circuit.
Background
The wall touch switch has attractive and elegant appearance, no abrasion in touch, long service life, dust prevention, water isolation safety and reliability, and is deeply favored by users, wherein the single-channel double-control, single-channel multi-control wall touch switch and the multi-channel multi-control wall touch switch occupy larger proportion in the category of the electronic touch switch, and can bring a lot of convenience to the users, however, the actual application in the current market is not very extensive, and the reason is that the existing wall touch switch control circuit has the following defects: 1. the single-chip microcomputer control is commonly adopted, the cost is high, particularly, the single-control circuit is lower in cost performance, and civilian citizen is difficult to realize; 2. the direct current power supply basically adopts a switching power supply, has high cost and certain high-frequency interference; 3. the lack of zero voltage control, for a large-capacitance filtering LED lamp (switch type), the starting-up impact current is large, the main switch device is easy to damage, and the electromagnetic interference is large; 4. the circuit elements are more, the double-layer PCB structure is more, the electrolytic capacitors are more, the reliability is poor, the failure rate is high, and the pulse anti-interference capability adopted by the control signals is not high; 5. each control switch structure of the double-control or multi-control circuit is the same, control signals sent by the control switches can be judged through codes, the circuit design is complex, the codes are needed before the double-control or multi-control circuit is used, and the common users often cannot easily master the double-control or multi-control circuit, so that the double-control or multi-control circuit is troublesome to use, and meanwhile, wiring is complex during installation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the single-live-wire simple wall single-live-wire touch switch circuit which has the advantages of simple structure, low cost, strong anti-interference capability, reliable work and convenient use.
In order to achieve the above purpose, the invention provides a simple wall single-live-wire touch switch circuit, which is characterized in that: the touch trigger circuit comprises a switch main circuit, a main direct current power circuit and a main touch trigger unit; the switch main circuit comprises two external connection terminals of the switch circuit, a bidirectional thyristor and a trigger circuit thereof, wherein the bidirectional thyristor forms an electronic switch, the bidirectional thyristor is connected between the two external connection terminals, the trigger circuit of the bidirectional thyristor comprises an anti-interference capacitor and a resistor, and the anti-interference capacitor and the resistor are connected between a T1 pole and a G pole of the bidirectional thyristor in parallel; the main direct-current power supply circuit is composed of a direct-current linear voltage stabilizing circuit and comprises a full-wave rectifying and filtering circuit, a first power field effect transistor, a first upper bias resistor, a first lower bias voltage stabilizing diode, a first energy storage capacitor, a first output filtering capacitor, a first isolation diode and a first integrated voltage stabilizing power supply, wherein a pair of alternating-current input ends of the full-wave rectifying and filtering circuit are respectively connected with a T2 pole and a G pole of a bidirectional thyristor in the switch main circuit; the drain electrode of the first power field effect tube is connected with the output positive end of the full-wave rectifying and filtering circuit, the source electrode of the first power field effect tube is connected to the output negative end of the full-wave rectifying and filtering circuit through the first energy storage capacitor, the first upper bias resistor is connected to the drain electrode and the gate electrode of the first power field effect tube in parallel, the negative electrode of the first lower bias voltage stabilizing diode is connected to the gate electrode of the first power field effect tube, and the positive electrode is connected with the positive end or the negative end of the direct-current output power supply of the first integrated voltage stabilizing power supply to form a primary voltage stabilizing circuit; the first integrated voltage-stabilizing power supply is formed by integrating three ends in a voltage-stabilizing way, the anode of the first isolation diode is connected with the source electrode of the first power field effect transistor, the cathode of the first isolation diode is connected with the input end of the first integrated voltage-stabilizing power supply, and the output of the first integrated voltage-stabilizing power supply provides a direct current working power supply for the master touch trigger unit through the first output filter capacitor;
The main body touch trigger unit is composed of a special touch bistable trigger integrated circuit with a human body capacitance detection function and peripheral elements, wherein the special touch bistable trigger integrated circuit internally comprises a human body touch sensing circuit, a fast and slow charge anti-shake circuit, a narrow pulse forming circuit, a bistable trigger circuit and a zero voltage detection circuit, an input end of the zero voltage detection circuit, a homodromous output end, a reverse output end pin, pins of the human body touch sensing circuit, an output end of the fast and slow charge anti-shake circuit, an output end of the narrow pulse forming circuit, an output end of the bistable trigger circuit and the like, the human body touch sensing circuit, the fast and slow charge anti-shake circuit, the narrow pulse forming circuit, the bistable trigger circuit and the zero voltage detection circuit are sequentially connected in series, an anti-shake capacitance is connected between the output end of the fast and slow charge anti-shake circuit and the negative end of a direct current output power supply of the first integrated stabilized power supply, the input end of the human body touch sensing circuit is connected with a touch sheet and a trigger sensitivity adjusting capacitance, and the homophase output end of the zero voltage detection circuit is connected with a source electrode of the first power field effect through a threshold stabilized diode; the specific parameters of the first lower bias zener diode and the threshold zener diode meet the following conditions: VDZ2< VS < vdz1+vcc 2, vs=vdz1+vcc 2-Von; wherein VDZ1 is the voltage stabilizing value of the first lower bias zener diode, VDZ2 is the voltage stabilizing value of the threshold zener diode, vcc2 is the positive terminal voltage value of the dc output power supply of the first integrated regulated power supply U2, von is the turn-on voltage of the first power field effect transistor V1, and VS is the source voltage of the first power field effect transistor V1.
Compared with the prior art, the switch main circuit comprises two external connection terminals of the switch circuit, a bidirectional thyristor and a trigger circuit thereof, wherein the bidirectional thyristor is formed by an electronic switch, the bidirectional thyristor is connected between the two external connection terminals, the trigger circuit of the bidirectional thyristor comprises an anti-interference capacitor and a discharging resistor, the anti-interference capacitor and the resistor are connected between a T1 pole and a G pole of the bidirectional thyristor in parallel, and the main direct current power circuit is formed by a direct current linear voltage stabilizing circuit. According to the invention, the on-off of a bidirectional thyristor in a switch main circuit is controlled by changing the breakdown voltage values of two ends of an output load of a linear voltage stabilizing circuit; through changing the charge and discharge of specific electric capacity, realize the double control function, circuit design is simpler, and no-load current is little, and interference killing feature is strong, need not to adopt the mode of code to distinguish the signal, and the bulk cost of product greatly reduces, and it is more convenient to use.
The invention will be further described with reference to the accompanying drawings and specific examples.
Drawings
FIG. 1 is a schematic circuit diagram of an embodiment 1 of the present invention;
FIG. 2 is a schematic circuit diagram of embodiment 2 of the present invention;
FIG. 3 is a schematic diagram of a (single-path double-control) main switch circuit according to embodiment 3 of the present invention;
FIG. 4 is a schematic diagram of a slave switch circuit according to embodiment 3 of the present invention;
FIG. 5 is a schematic diagram of a circuit for a single-path dual-control main switch according to embodiment 4 of the present invention;
FIG. 6 is a schematic diagram of a slave switch circuit according to embodiment 4 of the present invention;
FIG. 7 is a block diagram of the internal architecture of a specific embodiment of a touch-specific bistable integrated circuit of the present invention.
Detailed Description
Specific example 1:
as shown in fig. 1, the simple wall single-live-wire touch switch circuit of the invention generally comprises a switch main circuit, a main direct-current power supply circuit and a main touch trigger unit. The main circuit of the switch comprises two external connection terminals L and L1 of the main circuit of the switch, a bidirectional thyristor VT1 and a trigger circuit thereof, wherein the bidirectional thyristor VT1 is formed by the two external connection terminals L and L1, the T1 and T2 poles of the bidirectional thyristor VT1 are respectively connected between the two external connection terminals L and L1, the trigger circuit of the bidirectional thyristor VT1 comprises an anti-interference capacitor C8 and a discharge resistor R11, the anti-interference capacitor C8 and the discharge resistor R11 are connected between the T1 pole and the G pole of the bidirectional thyristor VT1 in parallel, and the main circuit of the switch is used as a main path of load current.
The main direct-current power supply circuit is composed of a direct-current linear voltage stabilizing circuit and comprises a full-wave rectifying and filtering circuit UR, a first power field effect transistor V1, a first upper bias resistor R2, a first lower bias voltage stabilizing diode VDZ1, a first energy storage capacitor C2, a first output filter capacitor C9, a first isolation diode VD1 and a first integrated voltage stabilizing power supply U2, wherein a pair of alternating-current input ends of the full-wave rectifying and filtering circuit UR are respectively connected with a T2 pole and a G pole of a bidirectional thyristor VT1 in a switch main circuit; the drain electrode of the first power field effect tube V1 is connected with the output positive end of the full-wave rectification filter circuit UR, the source electrode of the first power field effect tube V1 is connected to the output negative end of the full-wave rectification filter circuit UR through the first energy storage capacitor C2, the first upper bias resistor R2 is connected in parallel to the drain electrode and the grid electrode of the first power field effect tube V1, the negative electrode of the first lower bias zener diode VDZ1 is connected to the grid electrode of the first power field effect tube V1, and the positive electrode is connected with the positive end or the negative end of the direct current output power supply of the first integrated voltage stabilizing power supply U2 to form a primary voltage stabilizing circuit; the first integrated voltage-stabilizing power supply U2 is formed by integrating three-terminal voltage stabilization, the anode of the first isolation diode VD1 is connected with the source electrode of the first power field effect transistor V1, the cathode of the first isolation diode VD1 is connected with the input end of the first integrated voltage-stabilizing power supply U2, and the output of the first integrated voltage-stabilizing power supply U2 provides a direct current working power supply VCC2 for the master touch trigger unit through a first output filter capacitor C9. When the positive electrode of the first lower bias zener diode VDZ1 is connected to the positive end of the dc output power supply of the first integrated zener power supply U2, the bias current of the first power fet V1 may be also utilized to provide the dc working power supply VCC2 for the master touch trigger unit together, so that the quiescent current is smaller.
The main body touch trigger unit is composed of a special touch bistable trigger integrated circuit U1 with a human body capacitance detection function and peripheral elements, as shown in fig. 7, the special touch bistable trigger integrated circuit U1 internally comprises a human body touch sensing circuit, a fast and slow charge anti-shake circuit, a narrow pulse forming circuit, a bistable trigger circuit and a zero voltage detection circuit, and the human body touch sensing circuit, the fast and slow charge anti-shake circuit, the narrow pulse forming circuit, the bistable trigger circuit and the zero voltage detection circuit are sequentially connected in series and are provided with an input end, a homodromous output end and a reverse output end pin of the zero voltage detection circuit; pins such as an input end of a human body touch sensing circuit, an output end of a quick-slow charging anti-shake circuit, an output end of a narrow pulse forming circuit, an output end of a bistable trigger circuit and the like. The input end of the human body touch sensing circuit is connected with a touch sheet M and a trigger sensitivity adjusting capacitor C1, an anti-shake capacitor is connected between the output end of the quick and slow charging anti-shake circuit and the negative end of a direct current output power supply of the first integrated voltage stabilizing power supply U2, and the in-phase output end of the zero voltage detection circuit is connected with the source electrode of the first power field effect transistor V1 through a threshold voltage stabilizing diode VDZ 2. When a human body touches the touch sheet M, the capacitance of the input end of the human body touch sensing circuit is increased, and the level of the output end of the human body touch sensing circuit in the special touch bistable trigger integrated circuit U1 is overturned.
The following conditions need to be met in selecting the specific parameters of the first lower bias zener diode VDZ1, the threshold zener diode VDZ 2: VDZ2< VS < vdz1+vcc 2,
VS= VDZ1+ Vcc2- Von
Wherein: VDZ1 is the voltage stabilizing value of the first lower bias voltage stabilizing diode, VDZ2 is the voltage stabilizing value of the threshold voltage stabilizing diode, vcc2 is the positive end voltage value of the direct current output power supply of the first integrated voltage stabilizing power supply U2, von is the opening voltage of the first power field effect transistor V1, and VS is the source voltage of the first power field effect transistor V1.
The working principle of the simple wall single-live-wire touch switch circuit is as follows:
Referring to fig. 1, in the power-on state, the bistable output end (pin 7) in the special touch bistable trigger integrated circuit U1 is at high level (5V), the input end (pin 6) and the in-phase output end (pin 2) of the zero voltage detection circuit are both at high level, and the threshold voltage stabilizing diode VDZ2 has no current because of (vdz2+vcc 1) > (VDZ 1-Von), and the bidirectional thyristor VT1 cannot be triggered to be turned on because of the total load current of the direct current power supply is less than 20uA, so that the switch is in the off state; when a human body touches the touch sheet M, the bistable circuit in the special touch bistable trigger integrated circuit U1 is turned over, the bistable output end (the 7 th pin), the input end (the 6 th pin) of the zero voltage detection circuit and the in-phase output end (the 2 nd pin) are all reduced to be low level (0V), and the threshold voltage stabilizing diode VDZ2 is conducted because of (VDZ2+0) < (VDZ 1-Von), and the current passes through the full-wave rectification filter circuit UR, the first power field effect transistor V1 and the gate G of the bidirectional thyristor VT1 to trigger and conduct the bidirectional thyristor VT1, the switch is in a conducting state, the load is obtained, and the level of the output end of the human body touch sensing circuit in the special touch bistable trigger integrated circuit U1 is turned over again and circulates continuously.
Specific example 2:
Due to the development of technology, the performances of different types of illumination light sources from inductive starting fluorescent lamps to electronic starting fluorescent lamps and current LED lamps are different, for example, the power supply of the LED lamps usually converts alternating current into direct current through a switching power supply to provide working power for the LED lamps, the switching power supply usually has a large capacity capacitor, larger charging current appears at the moment of starting, and a large power switching tube is easy to damage; and the induction type started fluorescent lamp can generate induction high-voltage electricity at the moment of starting.
In order to be suitable for controlling the LED lamp and the fluorescent lamp started by inductance at the same time, the system is realized by further arranging a zero voltage monitoring circuit, a blocking circuit and an automatic zero voltage function clearing circuit on the basis of the specific embodiment 1. As shown in fig. 2, the zero voltage monitoring circuit is formed by a first voltage dividing resistor R3 and a second voltage dividing resistor R4, two ends of the first voltage dividing resistor R3 and the second voltage dividing resistor R4 are respectively connected with two ends of a direct current output of the full-wave rectifying and filtering circuit UR, and a voltage dividing point of the series branch is connected with an input end of the zero voltage detection circuit; when specific resistance values of the first voltage dividing resistor R3 and the second voltage dividing resistor R4 are selected, it is necessary to satisfy that the voltage dividing point is at a low level at the set voltage value allowing the maximum trigger. For example, the set voltage allowing the maximum impact is 30V, the voltage dividing ratio of the first voltage dividing resistor R3 to the second voltage dividing resistor R4 is 10:1, the power supply voltage of the special touch bistable trigger integrated circuit U1 is 5V, the absolute value of the voltage is >30V when power is supplied, the input end (6 th pin) and the in-phase output end (2 nd pin) of the zero voltage detection circuit are both high levels, and the bidirectional thyristor VT1 is not conducted; only when the absolute value of the voltage is less than 30V during power supply, the input end (6 th pin) and the in-phase output end (2 nd pin) of the zero voltage detection circuit are both low-level, and the bidirectional thyristor VT1 side is possibly conducted, so that the zero switching voltage is called, and the conducted voltage is only one tenth of the peak voltage, so that the conducted impact current is greatly reduced.
The blocking circuit comprises a blocking diode VD2 and the special touch bistable integrated circuit U1, wherein the positive electrode of the blocking diode VD2 is connected with the output end of the bistable trigger circuit in the special touch bistable integrated circuit U1, and the negative electrode of the blocking diode VD2 is connected with the input end of the zero voltage detection circuit.
The zero-voltage function automatic clearing circuit comprises a second power field effect tube V2, a delay resistor R5, a delay capacitor C3 and a current limiting resistor R10, wherein the drain electrode of the second power field effect tube V2 is connected with the input end of the zero-voltage detection circuit through the current limiting resistor R10, the source electrode of the second power field effect tube V2 is connected with the negative end of the direct-current output power supply of the first integrated stabilized voltage supply U2, the two ends of the delay resistor R5 are respectively connected with the inverting output end of the bistable trigger circuit and the grid electrode of the second power field effect tube V2 in parallel, and the two ends of the delay capacitor C3 are respectively connected with the grid electrode of the second power field effect tube V2 and the negative end of the direct-current output power supply of the first integrated stabilized voltage supply U2 in parallel.
The effect of designing the blocking diode VD2 is: whether the power supply voltage is zero or not, as long as the bistable output end (pin 7) of the special touch bistable trigger integrated circuit U1 is high level, the input end (pin 6) and the in-phase output end (pin 2) of the zero voltage detection circuit are both high level, and the bidirectional thyristor VT1 is not conducted, so that the diode is blocked.
The function of the zero-voltage function automatic clearing circuit is mainly aimed at an inductive fluorescent lamp, high voltage is generated at the moment of starting, the high voltage can enable an in-phase output end (a 2 nd pin) of an internal zero-voltage detection circuit of a special touch bistable trigger integrated circuit U1 to be changed into high level, a bidirectional thyristor VT1 can be blocked, the fluorescent lamp cannot be reliably started, in order to avoid the phenomenon, a second power field effect tube V2 is conducted after a delay resistor R5 and a delay capacitor C3 delay for 50ms, the resistance value of a current limiting resistor R10 is small, the 6 th pin of the special touch bistable trigger integrated circuit U1 is approximately zero, the zero-voltage function is automatically cleared, the inductive fluorescent lamp can be reliably started, the bistable output end (a 7 th pin) of the special touch bistable trigger integrated circuit U1 is changed into high level when the touch is turned off, and the second power field effect tube V2 is not turned off, so that large current is not generated.
In order to achieve the purposes of displaying the working (on-off) state of the current touch switch circuit and indicating the night switch position and convenient use, a night indicator light circuit can be additionally arranged in the simple wall single-live wire touch switch circuit in the embodiment 1 and the embodiment, and the main direct current power supply circuit further comprises an upper bias light emitting diode (LED 1), the upper bias light emitting diode (LED 1) and a first upper bias resistor (R2) are connected in series and then connected to the drain electrode and the grid electrode of the first power field effect tube (V1) in parallel, and the upper bias light emitting diode (LED 1) forms a night indicator light.
Thus, when the switch main circuit is in an off state, the upper bias current of the first power fet V1 flows through the upper bias light emitting diode LED1, and the upper bias light emitting diode LED1 emits light; when the switch main circuit is in a conducting state, the input voltage of the ac input end of the full-wave rectifying and filtering circuit UR is only the conducting voltage drop of the bidirectional thyristor VT1, which is insufficient to make the upper bias LED1 conduct and emit light, so that the current operating state of the touch switch circuit can be clearly displayed, and the switch main circuit serves as a night indicator lamp, and meanwhile, the current generated on the LED1 of the light emitting lamp can be used as the operating current of the regulated power supply VCC2, so that the no-load current is further reduced.
Example 3
The simple wall single-live wire touch switch circuit can be used as a single-path single-control switch circuit, and can also form a double-control simple wall single-live wire touch switch circuit after few elements are added, and can be used as a single-path double-control switch circuit, wherein the single-path double-control switch circuit means that the same electric appliance or lighting lamp can be controlled at two different positions (by different switches). The double-control simple wall single-live wire touch switch circuit comprises a double-control simple wall single-live wire touch master switch circuit and a double-control simple wall single-live wire touch slave switch circuit, and the slave circuit is powered by the master circuit without a power supply, so that the circuit is simplified, and the cost of the double-control circuit is greatly reduced.
As shown in fig. 3, on the basis of embodiment 1 or 2, a dc power supply resistor R6, an anti-interference capacitor C4 and a second isolation diode VD3 are further provided to form a dual-control simple wall single-live-wire touch main switch circuit. The DC power supply resistor R6 one end is connected with the positive end VCC1 of the DC output power supply, the positive electrode of the second isolation diode VD3 is connected with the positive end of an anti-shake capacitor C5 in the anti-shake circuit, the negative electrode of the second isolation diode VD3 is connected with the other end of the DC power supply resistor R6 to form a first connection end B of the master-slave switch, the second anti-interference capacitor C4 is connected with the negative electrode of the second isolation diode VD3 and the negative end of the DC power supply, and the negative end of the DC power supply forms a second connection end A of the master-slave switch. When the slave circuit has no trigger signal, the voltage corresponding to the negative end of the second isolation diode VD3 is close to VCC1, the positive end voltage (the voltage on the anti-shake capacitor C5) is always smaller than the voltage of VCC2, and the touch of the double-control simple wall single-live wire touch master switch circuit does not affect the operation of the double-control simple wall single-live wire touch slave switch circuit, so that a good isolation effect is achieved.
As shown in fig. 4, the dual-control simple wall single-live wire touch slave switch circuit comprises a slave direct-current power supply circuit, a slave human body touch trigger unit and a discharge circuit, wherein the slave direct-current power supply circuit comprises a second energy storage capacitor C6, a second output filter capacitor C9, a third isolation diode VD4 and a second integrated voltage-stabilizing power supply U2, the second integrated voltage-stabilizing power supply U2 is formed by a second three-terminal voltage-stabilizing integration, the second energy storage capacitor C6 is connected between an input end of the second three-terminal voltage-stabilizing integration and a power supply negative end in parallel, the second output filter capacitor C9 is connected between a power supply output positive end VCC2 of the second three-terminal voltage-stabilizing integration and a power supply negative end in parallel, an anode of the third isolation diode VD4 is electrically connected with a master-slave switch first connection end B of the dual-control simple wall single-live wire touch master switch circuit, and a cathode of the third isolation diode VD4 is connected with an input end of the second three-terminal voltage-stabilizing integration to form the slave direct-current power supply circuit to provide working power supply for the slave human body touch trigger unit.
The human body capacitance touch detection unit is composed of a special touch bistable trigger integrated circuit U1 with a human body capacitance detection function and peripheral elements, wherein the special touch bistable trigger integrated circuit U1 internally comprises a human body touch sensing circuit, a fast and slow charging anti-shake circuit, a narrow pulse forming circuit, a bistable trigger circuit and a zero voltage detection circuit, the human body touch sensing circuit, the fast and slow charging anti-shake circuit, the narrow pulse forming circuit and the bistable trigger circuit are sequentially connected in series, and the input end of the human body touch sensing circuit is connected with a touch sheet M and a trigger sensitivity adjusting capacitor C1; the discharging circuit comprises a discharging field effect tube V3, a first lower bias resistor R14 and a discharging current-limiting resistor R7, wherein a source electrode of the discharging field effect tube V3 is connected with a power negative end of a second three-end voltage-stabilizing integrated U2, a drain electrode of the discharging field effect tube V3 is connected with an anode of a third isolation diode VD4 through the discharging current-limiting resistor R7, a grid electrode of the discharging field effect tube is connected with an output end of a narrow pulse output circuit, the first lower bias resistor R14 is connected between the grid electrode and the source electrode of the field effect tube, a first connecting end B of a master-slave switch of the third isolation diode VD4 is electrically connected with a master-slave switch of the double-control simple wall single-fire wire touch master switch circuit, and a power negative end of the second three-end voltage-stabilizing integrated power is electrically connected with a second connecting end A of the master-slave switch of the double-control simple wall single-fire wire touch master switch circuit.
In addition, the input end and the output end of the second voltage stabilizing integrated circuit are provided with a secondary switch state indicating circuit which consists of a luminous tube LED and a current limiting resistor, the positive electrode of the luminous tube is connected with the input end of the voltage stabilizing integrated circuit, and the negative electrode of the luminous tube is connected with the output end through the current limiting resistor.
The working principle of the double-control simple wall single-live-wire touch switch circuit is as follows:
Referring to fig. 3 and 4, in the initial state, when a double-control simple wall single-live wire touch is touched by a person from the switch circuit, a narrow pulse circuit output end (9 th pin) in the special touch bistable trigger integrated circuit U1 outputs a high level, the discharge power field effect transistor V2 is turned on, the discharge current limiting resistor R7 discharges rapidly, the terminal B drops to a low level, meanwhile, the anti-shake capacitance C5 also drops to a low voltage, the internal bistable output end (7 th pin) of the special touch bistable trigger integrated circuit U1 is turned to zero, the blocking is released, the bidirectional thyristor VT1 is turned on in a zero voltage state, the touch is turned again, and the bidirectional thyristor VT1 is turned off.
Example 4
The embodiment is another implementation mode of the double-control simple wall single-live-wire touch switch circuit.
As shown in fig. 5, the simple wall single-live wire touch switch circuit of this embodiment includes a switch main circuit, a main dc power circuit, and a main touch trigger unit, as in embodiment 1 or 2; the switching main circuit comprises two external connection terminals of the switching circuit, a bidirectional thyristor VT1 and a trigger circuit thereof, wherein the bidirectional thyristor VT1 is formed by an electronic switch, the bidirectional thyristor VT1 is connected between the two external connection terminals, the trigger circuit of the bidirectional thyristor VT1 comprises an anti-interference capacitor C8 and a discharge resistor R11, and the anti-interference capacitor C8 and the discharge resistor R11 are connected in parallel between a T1 pole and a G pole of the bidirectional thyristor VT 1; the main direct-current power supply circuit is composed of a direct-current linear voltage stabilizing circuit and comprises a full-wave rectifying and filtering circuit UR, a first power field effect transistor V1, a first upper bias resistor R2, a first lower bias voltage stabilizing diode VDZ1, a first energy storage capacitor C2, a first output filter capacitor C9, a first isolation diode VD1 and a first integrated voltage stabilizing power supply U2, wherein a pair of alternating-current input ends of the full-wave rectifying and filtering circuit UR are respectively connected with a T2 pole and a G pole of a bidirectional thyristor VT1 in a switch main circuit; the drain electrode of the first power field effect tube V1 is connected with the output positive end of the full-wave rectification filter circuit UR, the source electrode of the first power field effect tube V1 is connected to the output negative end of the full-wave rectification filter circuit UR through the first energy storage capacitor C2, the first upper bias resistor R2 is connected in parallel to the drain electrode and the grid electrode of the first power field effect tube V1, the negative electrode of the first lower bias zener diode VDZ1 is connected to the grid electrode of the first power field effect tube V1, and the positive electrode is connected with the positive end or the negative end of the direct current output power supply of the first integrated voltage stabilizing power supply U2 to form a primary voltage stabilizing circuit; the first integrated voltage-stabilizing power supply U2 is formed by integrating three-terminal voltage stabilization, the anode of the first isolation diode VD1 is connected with the source electrode of the first power field effect transistor V1, the cathode of the first isolation diode VD1 is connected with the input end of the first integrated voltage-stabilizing power supply U2, and the output of the first integrated voltage-stabilizing power supply U2 provides a direct current working power supply VCC2 for the master touch trigger unit through a first output filter capacitor C9.
The master touch trigger unit comprises a high anti-interference bistable touch integrated circuit U3 with a human body capacitance detection function and a peripheral element to form a locking type touch trigger circuit, wherein the peripheral element comprises a third power field effect transistor V4, a trigger triode V5 and a trigger resistor R8, the human body touch input circuit comprises a touch sheet M and a trigger sensitivity adjusting capacitor C7, the touch sheet M is connected with a touch sensing input end of the high anti-interference locking type touch integrated circuit U3, a source electrode of the third power field effect transistor V4 is connected with a negative end of a direct current power supply, a drain electrode of the third power field effect transistor V is connected with a touch sensing input end of the high anti-interference locking type touch integrated circuit U3 through the trigger sensitivity adjusting capacitor C7, a 3 rd pin of the high anti-interference bistable touch integrated circuit U3 is connected with a power negative end of a second three-end voltage stabilizing integrated power supply through a capacitor C13, and 4 th and 5 th pins of the high anti-interference bistable touch integrated circuit U3 are connected with a positive end of the second three-end voltage stabilizing integrated power supply; the 2 nd pin is connected with the negative end of the power supply of the second three-end voltage stabilization integration; the 6 th pin is connected with the positive electrode of the first isolation diode VD1 through a threshold voltage stabilizing diode VDZ 2.
The trigger triode V5 is a PNP triode, an emitter of the trigger triode V5 is connected with a cathode of the first isolation diode VD1 to serve as power input, a collector of the trigger triode V5 is connected with a grid of the third power field effect tube V4, a second upper bias resistor R16 is arranged between the emitter and a base of the trigger triode V5, one end of the trigger resistor R8 is connected with a base of the trigger triode V5, the other end of the trigger resistor R8 serves as a first connecting end B of a master-slave switch of the double-control simple wall single-fire-wire touch master switch circuit, and a negative end of the direct current power supply forms a second connecting end A of the master-slave switch to form the double-control simple wall single-fire-wire touch master switch circuit.
As shown in fig. 6, the slave switch circuit includes a slave dc power supply circuit, a slave human body touch trigger unit and a discharge circuit, where the slave dc power supply circuit includes a second energy storage capacitor C6, a second output filter capacitor C9, a third isolation diode VD4 and a second integrated regulated power supply U2, where the second integrated regulated power supply U2 is formed by a second three-terminal regulated integration, the second energy storage capacitor C6 is connected in parallel between an input end of the second three-terminal regulated integration and a negative end of the power supply, the second output filter capacitor C9 is connected in parallel between an output positive end of the second three-terminal regulated integration and a negative end of the power supply, the positive end of the third isolation diode VD4 is electrically connected with a first connection end B of a master-slave switch of the dual-control simple wall single-fire wire touch main switch circuit, and the negative end of the third isolation diode VD4 is connected with an input end of the second three-terminal regulated integration to form the slave dc power supply circuit to provide a working power supply for the slave human body touch trigger unit;
The slave human body touch trigger unit is composed of a high anti-interference synchronous touch integrated circuit U4 with a human body capacitance detection function and peripheral elements, wherein a positive power supply connecting end (5 th pin) of the high anti-interference synchronous touch integrated circuit U4 is connected with a positive output end and a negative output end of a second voltage stabilizing integrated circuit U2 respectively, an output initial state end (4 th pin) of the high anti-interference synchronous touch integrated circuit U4 is connected with a negative end of the second voltage stabilizing integrated circuit U2, a touch sheet M is connected with a touch end (1 st pin) of the high anti-interference synchronous touch integrated circuit U4, and a sensitivity adjusting capacitor C14 is connected between a 3 rd pin of a touch sensitivity adjusting end of the high anti-interference synchronous touch integrated circuit U4 and a negative end of the second voltage stabilizing integrated circuit U2.
The discharging circuit comprises a discharging field effect tube V3, a first lower bias resistor R14 and a discharging current-limiting resistor R7, wherein a source electrode of the discharging field effect tube V3 is connected with a power negative end of a second three-end voltage-stabilizing integrated power supply, a grid electrode of the discharging field effect tube V3 is connected with a 6 th pin of an output end of the high anti-interference synchronous type touch integrated circuit U4, a drain electrode of the discharging field effect tube V3 passes through the discharging current-limiting resistor R7 and is connected with a positive electrode of a third isolation diode VD4, a positive electrode of the third isolation diode VD4 is electrically connected with a first connecting end B of a master-slave switch of the double-control simple type wall single-fire-wire touch main switch circuit, and a power negative end of the second three-end voltage-stabilizing integrated power supply is electrically connected with a second connecting end A of the master-slave switch of the double-control simple type wall single-fire-wire touch main switch circuit.
The working principle of the double-control simple wall single-live-wire touch switch circuit is as follows:
As shown in fig. 5, in the initial state main switch, the output end (6 th pin) of the high anti-interference locking type touch integrated circuit U3 is at a high level, no current is flowing in the first lower bias zener diode VZD2, the bidirectional thyristor VT1 is turned off, and the switch is locked in an off state; after a human body touches the touch sheet M, the in-phase output end of the zero voltage detection circuit of the high anti-interference bistable touch integrated circuit U3 turns to be low level, the first lower bias voltage stabilizing diode VZD2 generates trigger current, the bidirectional thyristor VT1 is conducted, and the switch is locked in a conducting state.
The working principle of the slave switch is shown in fig. 6, in an initial state, the output end (6 th pin) of the slave switch high anti-interference synchronous type touch integrated circuit U4 is in a low level, the discharge power field effect transistor V3 is cut off and does not act on the master circuit switch, when a human body touches the touch sheet M, the output end (6 th pin) of the high anti-interference synchronous type touch integrated circuit U4 is turned to a high level, the discharge power field effect transistor V3 is conducted, the slave switch is rapidly discharged through R7, the potential of the 1 st terminal B is reduced to zero, meanwhile, the base electrode of the triode V5 of the master circuit in fig. 5 is conducted through the trigger resistor R8, the grid electrode of the third power field effect transistor V4 is conducted through the collector electrode of the V5, the touch point (1 st pin) of the high anti-interference bistable type touch integrated circuit U3 is connected to the ground through the drain electrode and the source electrode of the third power field effect transistor V4, the input capacitance is correspondingly increased at the touch point (1 st pin), the circuit inside the high anti-interference type touch integrated circuit U3 is turned over, the output end (6 th pin) is turned to a low level thyristor, and the bi-stable state switch VT is turned on; when the human body leaves the touch sheet M, the output end of the high anti-interference synchronous touch integrated circuit U4 is reset by quick zeroing, after the human body touches the touch sheet M again, the output end of the high anti-interference synchronous touch integrated circuit U4 is turned to be high level again, after discharging, the bistable circuit in the high anti-interference bistable touch integrated circuit U3 in FIG. 5 outputs high level again by turning the output end (6 th pin), the bidirectional thyristor VT1 is cut off, and the switch is restored to the cut-off state again.
In order to indicate the input and output end of the second voltage-stabilizing integrated circuit that the working state of the switch belongs to in the slave switch, also there is slave switch state indicating circuit, it is made up of luminotron LED and current-limiting resistor, the positive pole of luminotron connects the input end of the voltage-stabilizing integrated circuit, the negative pole is connected with output end through the current-limiting resistor. This approach is the simplest and most practical.
Claims (8)
1. A simple wall single-live-wire touch switch circuit is characterized in that: the touch trigger circuit comprises a switch main circuit, a main direct current power circuit and a main touch trigger unit; the switch main circuit comprises two external connection terminals of the switch circuit, a bidirectional thyristor and a trigger circuit thereof, wherein the bidirectional thyristor forms an electronic switch, the bidirectional thyristor is connected between the two external connection terminals, the trigger circuit of the bidirectional thyristor comprises an anti-interference capacitor and a resistor, and the anti-interference capacitor and the resistor are connected between a T1 pole and a G pole of the bidirectional thyristor in parallel; the main direct-current power supply circuit is composed of a direct-current linear voltage stabilizing circuit and comprises a full-wave rectifying and filtering circuit, a first power field effect transistor, a first upper bias resistor, a first lower bias voltage stabilizing diode, a first energy storage capacitor, a first output filtering capacitor, a first isolation diode and a first integrated voltage stabilizing power supply, wherein a pair of alternating-current input ends of the full-wave rectifying and filtering circuit are respectively connected with a T2 pole and a G pole of a bidirectional thyristor in the switch main circuit; the drain electrode of the first power field effect tube is connected with the output positive end of the full-wave rectifying and filtering circuit, the source electrode of the first power field effect tube is connected to the output negative end of the full-wave rectifying and filtering circuit through the first energy storage capacitor, the first upper bias resistor is connected to the drain electrode and the gate electrode of the first power field effect tube in parallel, the negative electrode of the first lower bias voltage stabilizing diode is connected to the gate electrode of the first power field effect tube, and the positive electrode is connected with the positive end or the negative end of the direct-current output power supply of the first integrated voltage stabilizing power supply to form a primary voltage stabilizing circuit; the first integrated voltage-stabilizing power supply is formed by integrating three ends in a voltage-stabilizing way, the anode of the first isolation diode is connected with the source electrode of the first power field effect transistor, the cathode of the first isolation diode is connected with the input end of the first integrated voltage-stabilizing power supply, and the output of the first integrated voltage-stabilizing power supply provides a direct current working power supply for the master touch trigger unit through the first output filter capacitor;
the main body touch trigger unit is composed of a special touch bistable trigger integrated circuit with a human body capacitance detection function and peripheral elements, wherein the special touch bistable trigger integrated circuit internally comprises a human body touch sensing circuit, a fast and slow charge anti-shake circuit, a narrow pulse forming circuit, a bistable trigger circuit and a zero voltage detection circuit, an input end of the zero voltage detection circuit, a homodromous output end, a reverse output end pin, pins of the human body touch sensing circuit, an output end of the fast and slow charge anti-shake circuit, an output end of the narrow pulse forming circuit, an output end of the bistable trigger circuit and the like, the human body touch sensing circuit, the fast and slow charge anti-shake circuit, the narrow pulse forming circuit, the bistable trigger circuit and the zero voltage detection circuit are sequentially connected in series, an anti-shake capacitance is connected between the output end of the fast and slow charge anti-shake circuit and the negative end of a direct current output power supply of the first integrated stabilized power supply, the input end of the human body touch sensing circuit is connected with a touch sheet and a trigger sensitivity adjusting capacitance, and the homophase output end of the zero voltage detection circuit is connected with a source electrode of the first power field effect through a threshold stabilized diode; the specific parameters of the first lower bias zener diode and the threshold zener diode meet the following conditions: VDZ2< VS < vdz1+vcc 2, vs=vdz1+vcc 2-Von; wherein VDZ1 is the voltage stabilizing value of the first lower bias zener diode, VDZ2 is the voltage stabilizing value of the threshold zener diode, vcc2 is the positive terminal voltage value of the dc output power supply of the first integrated regulated power supply U2, von is the turn-on voltage of the first power field effect transistor V1, and VS is the source voltage of the first power field effect transistor V1.
2. The simple wall single fire wire touch switch circuit of claim 1, wherein: the full-wave rectification filter circuit is characterized by further comprising a zero voltage monitoring circuit, a blocking circuit and a zero voltage function automatic clearing circuit, wherein the zero voltage monitoring circuit is formed by a first voltage dividing resistor and a second voltage dividing resistor which are connected in series, two ends of the first voltage dividing resistor and the second voltage dividing resistor are respectively connected with two ends of a direct current output of the full-wave rectification filter circuit, and a voltage dividing point of the series is connected with an input end of the zero voltage detection circuit; the blocking circuit comprises a blocking diode and the special touch bistable trigger integrated circuit, wherein the positive electrode of the blocking diode is connected with the output end of the bistable trigger circuit in the special touch bistable trigger integrated circuit, and the negative electrode of the blocking diode is connected with the input end of the zero voltage detection circuit; the zero-voltage function automatic clearing circuit comprises a second power field effect transistor, a delay resistor, a delay capacitor and a current limiting resistor R10, wherein the drain electrode of the second power field effect transistor is connected with the input end of the zero-voltage detection circuit through the current limiting resistor, the source electrode of the second power field effect transistor is connected with the negative end of the direct-current output power supply of the first integrated voltage stabilizing power supply, two ends of the delay resistor are respectively connected with the inverting output end of the bistable trigger circuit and the grid electrode of the second power field effect transistor in parallel, and two ends of the delay capacitor are respectively connected with the grid electrode of the second power field effect transistor and the negative end of the direct-current output power supply of the first integrated voltage stabilizing power supply in parallel.
3. The simple wall single fire wire touch switch circuit of claim 1, wherein: the main direct current power supply circuit further comprises an upper bias light emitting diode, the upper bias light emitting diode and the first upper bias resistor are connected in series and then connected to the drain electrode and the gate electrode of the first power field effect tube in parallel, and the upper bias light emitting diode forms a night indicator lamp.
4. A simple wall single fire wire touch switch circuit according to any one of claims 1-3, wherein: the direct-current power supply resistor, the second anti-interference capacitor and the second isolation diode form a double-control simple wall single-live-wire touch main switch circuit, one end of the direct-current power supply resistor is connected with the positive end of a direct-current output power supply, the positive end of the second isolation diode is connected with the positive end of the anti-shake capacitor in the quick-release anti-shake circuit, the negative electrode of the second isolation diode is connected with the other end of the direct-current power supply resistor to form a first connection end B of a master-slave switch, the second anti-interference capacitor is connected with the negative electrode of the second isolation diode and the negative end of the direct-current power supply, and the negative end of the direct-current power supply forms a second connection end A of the master-slave switch;
The secondary switch circuit comprises a secondary direct-current power supply circuit, a secondary human body touch trigger unit and a discharge circuit, wherein the secondary direct-current power supply circuit comprises a second energy storage capacitor, a second output filter capacitor, a third isolation diode and a second integrated voltage-stabilized power supply, the second integrated voltage-stabilized power supply is formed by a second three-terminal voltage-stabilized integration, the second energy storage capacitor is connected in parallel between an input end of the second three-terminal voltage-stabilized integration and a negative end of the power supply, the second output filter capacitor is connected in parallel between an output positive end and a negative end of the power supply of the second three-terminal voltage-stabilized integration, an anode of the third isolation diode is electrically connected with a first connecting end B of a master-slave switch of the double-control simple wall single-fire wire touch main switch circuit, and a cathode of the third isolation diode is connected with an input end of the second three-terminal voltage-stabilized integration to form the secondary direct-current power supply circuit to provide a working power supply for the secondary human body touch trigger unit;
The secondary human body touch trigger unit consists of a special touch bistable trigger integrated circuit with a human body capacitance detection function and peripheral elements, wherein the special touch bistable trigger integrated circuit internally comprises a human body touch sensing circuit, a fast and slow charging anti-shake circuit, a narrow pulse forming circuit, a bistable trigger circuit and a zero voltage detection circuit, the human body touch sensing circuit, the fast and slow charging anti-shake circuit, the narrow pulse forming circuit and the bistable trigger circuit are sequentially connected in series, and the input end of the human body touch sensing circuit is connected with a touch sheet and a trigger sensitivity adjusting capacitor; the discharging circuit comprises a discharging field effect tube, a first lower bias resistor and a discharging current-limiting resistor, wherein a source electrode of the discharging field effect tube is connected with a power negative end of a second three-end voltage-stabilizing integrated power supply, a drain electrode of the discharging field effect tube is connected with an anode of a third isolation diode through the discharging current-limiting resistor, a grid electrode of the discharging field effect tube is connected with an output end of a narrow pulse output circuit, the first lower bias resistor is connected between the grid electrode and the source electrode of the field effect tube, an anode of the third isolation diode is electrically connected with a first connecting end B of a master-slave switch of the double-control simple wall single-fire-wire touch master switch circuit, and a power negative end of the second three-end voltage-stabilizing integrated power supply is electrically connected with a second connecting end A of the master-slave switch of the double-control simple wall single-fire-wire touch master switch circuit.
5. The simple wall single fire wire touch switch circuit of claim 4 wherein: the input and output ends of the second voltage stabilizing integrated circuit are also provided with a slave switch state indicating circuit which consists of a luminous tube and a current limiting resistor R9, the positive electrode of the luminous tube is connected with the input end of the voltage stabilizing integrated circuit, and the negative electrode of the luminous tube is connected with the output end through the current limiting resistor.
6. A simple wall single-live-wire touch switch circuit is characterized in that: the touch trigger circuit comprises a switch main circuit, a main direct current power circuit and a main touch trigger unit; the switch main circuit comprises two external connection terminals of the switch circuit, a bidirectional thyristor and a trigger circuit thereof, wherein the bidirectional thyristor forms an electronic switch, the bidirectional thyristor is connected between the two external connection terminals, the trigger circuit of the bidirectional thyristor comprises an anti-interference capacitor and a resistor, and the anti-interference capacitor and the resistor are connected between a T1 pole and a G pole of the bidirectional thyristor in parallel; the main direct-current power supply circuit is composed of a direct-current linear voltage stabilizing circuit and comprises a full-wave rectifying and filtering circuit, a first power field effect transistor V1, a first upper bias resistor, a first lower bias voltage stabilizing diode, a first energy storage capacitor, a first output filter capacitor, a first isolation diode and a first integrated voltage stabilizing power supply, wherein a pair of alternating-current input ends of the full-wave rectifying and filtering circuit are respectively connected with a T2 pole and a G pole of a bidirectional thyristor in the switch main circuit; the drain electrode of the first power field effect tube is connected with the output positive end of the full-wave rectifying and filtering circuit, the source electrode of the first power field effect tube is connected to the output negative end of the full-wave rectifying and filtering circuit through the first energy storage capacitor, the first upper bias resistor is connected in parallel with the drain electrode and the gate electrode of the first power field effect tube, the negative electrode of the first lower bias zener diode VDZ1 is connected to the gate electrode of the first power field effect tube, and the positive electrode is connected with the positive end or the negative end of the direct-current output power supply of the first integrated zener power supply to form a primary zener circuit; the first integrated voltage-stabilizing power supply is formed by integrating three ends in a voltage-stabilizing way, the anode of the first isolation diode is connected with the source electrode of the first power field effect transistor, the cathode of the first isolation diode is connected with the input end of the first integrated voltage-stabilizing power supply, and the output of the first integrated voltage-stabilizing power supply provides a direct current working power supply for the master touch trigger unit through the first output filter capacitor;
The main body touch trigger unit is composed of a high anti-interference locking type touch integrated circuit with a human body capacitance detection function and a peripheral element, the human body touch sensing input circuit comprises a touch sheet, the peripheral element further comprises a third power field effect transistor, a trigger triode and a trigger resistor, the touch sheet is connected with a touch sensing input end of the high anti-interference locking type touch integrated circuit, a source electrode of the third power field effect transistor is connected with a negative end of a direct current power supply, a drain electrode of the third power field effect transistor is connected with the touch sensing input end of the high anti-interference locking type touch integrated circuit through a trigger sensitivity adjusting capacitor, a 3 rd pin of the high anti-interference locking type touch integrated circuit U3 is connected with a power negative end of a second three-end voltage stabilizing integrated circuit through a capacitor C13, and 4 th pin and 5 th pin of the high anti-interference locking type touch integrated circuit is connected with a power positive end of the second three-end voltage stabilizing integrated circuit; the 2 nd pin is connected with the negative end of the power supply of the second three-end voltage stabilization integration; the 6 th pin is connected with the positive electrode of the first isolation diode VD1 through a threshold voltage stabilizing diode VDZ 2; the trigger triode is a PNP triode, an emitter of the trigger triode is connected with a cathode of the first isolation diode to serve as power input, a collector of the trigger triode is connected with a grid of the third power field effect tube, a second upper bias resistor is arranged between the emitter and a base of the trigger triode, one end of the trigger resistor is connected with the base of the trigger triode, the other end of the trigger resistor serves as a first connecting end B of a master-slave switch of the double-control simple wall single-fire wire touch master switch circuit, and a negative end of the direct current power supply forms a second connecting end A of the master-slave switch, so that the double-control simple wall single-fire wire touch master switch circuit is formed; the specific parameters of the first lower bias zener diode and the threshold zener diode meet the following conditions: VDZ2< VS < vdz1+vcc 2, vs=vdz1+vcc 2-Von; wherein VDZ1 is the voltage stabilizing value of the first lower bias zener diode, VDZ2 is the voltage stabilizing value of the threshold zener diode, vcc2 is the positive terminal voltage value of the dc output power supply of the first integrated regulated power supply U2, von is the turn-on voltage of the first power field effect transistor V1, and VS is the source voltage of the first power field effect transistor V1;
The secondary switch circuit comprises a secondary direct-current power supply circuit, a secondary human body touch trigger unit and a discharge circuit, wherein the secondary direct-current power supply circuit comprises a second energy storage capacitor, a second output filter capacitor, a third isolation diode and a second integrated voltage-stabilizing power supply, the second integrated voltage-stabilizing power supply is formed by a second three-terminal voltage-stabilizing integration, the second energy storage capacitor is connected in parallel between an input end of the second three-terminal voltage-stabilizing integration and a negative end of the power supply, the second output filter capacitor is connected in parallel between an output positive end and a negative end of the power supply of the second three-terminal voltage-stabilizing integration, an anode of the third isolation diode is electrically connected with a first connecting end B of a master-slave switch of the double-control simple wall single-fire wire touch main switch circuit, and a cathode of the third isolation diode is connected with an input end of the second three-terminal voltage-stabilizing integration to form the secondary direct-current power supply circuit to provide a working power supply for the secondary human body touch trigger unit;
The secondary human body touch trigger unit consists of a high anti-interference synchronous touch integrated circuit with a human body capacitance detection function and a peripheral element, wherein a positive power supply connecting end and a negative power supply connecting end of the high anti-interference synchronous touch integrated circuit are respectively connected with a positive output end and a negative output end of the second voltage stabilizing integrated circuit, an output initial state end of the high anti-interference synchronous touch integrated circuit is connected with a negative output end of the second voltage stabilizing integrated circuit, a touch sheet is connected with a touch end of the high anti-interference synchronous touch integrated circuit, and a sensitivity adjustment capacitor is connected between a touch sensitivity adjustment end of the high anti-interference synchronous touch integrated circuit and the negative output end of the second voltage stabilizing integrated circuit;
the discharging circuit comprises a discharging field effect tube, a first lower bias resistor and a discharging current-limiting resistor, wherein a source electrode of the discharging field effect tube is connected with a power negative end of a second three-end voltage-stabilizing integrated circuit, a grid electrode of the discharging field effect tube is connected with a touch output end of the high anti-interference synchronous type touch integrated circuit, a drain electrode of the discharging field effect tube passes through the discharging current-limiting resistor and is connected with an anode of a third isolation diode, the anode of the third isolation diode is electrically connected with a first connecting end B of a master-slave switch of the double-control simple wall single-fire-wire touch master switch circuit, and a power negative end of the second three-end voltage-stabilizing integrated circuit is electrically connected with a second connecting end A of the master-slave switch of the double-control simple wall single-fire-wire touch master switch circuit.
7. The simple wall single fire wire touch switch circuit of claim 6 wherein: the main direct current power supply circuit further comprises an upper bias light emitting diode, the upper bias light emitting diode and the first upper bias resistor are connected in series and then connected to the drain electrode and the gate electrode of the first power field effect tube in parallel, and the upper bias light emitting diode forms a night indicator lamp.
8. A simple wall single fire wire touch switch circuit as defined in claim 6 or 7 wherein: the input and output ends of the second voltage stabilizing integrated circuit are also provided with a slave switch state indicating circuit which consists of a luminous tube and a current limiting resistor, the positive electrode of the luminous tube is connected with the input end of the voltage stabilizing integrated circuit, and the negative electrode of the luminous tube is connected with the output end through the current limiting resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810806748.9A CN108768374B (en) | 2018-07-18 | 2018-07-18 | Simple wall single-live-wire touch switch circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810806748.9A CN108768374B (en) | 2018-07-18 | 2018-07-18 | Simple wall single-live-wire touch switch circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108768374A CN108768374A (en) | 2018-11-06 |
| CN108768374B true CN108768374B (en) | 2024-09-20 |
Family
ID=63970669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810806748.9A Active CN108768374B (en) | 2018-07-18 | 2018-07-18 | Simple wall single-live-wire touch switch circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108768374B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114200371B (en) * | 2021-08-09 | 2023-07-11 | 威凯检测技术有限公司 | Capability verification device for electrostatic discharge immunity test |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208369555U (en) * | 2018-07-18 | 2019-01-11 | 刘冰冰 | Skeleton symbol wall list firewire touch switch circuit |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4213061A (en) * | 1978-01-30 | 1980-07-15 | Conner Charles C | Electronically actuated electric switch |
| CN2233135Y (en) * | 1994-06-27 | 1996-08-14 | 福建省富闽经济发展总公司 | Delay switch |
| US9685950B2 (en) * | 2011-03-23 | 2017-06-20 | Shenzhen Ada Electronics Co., Ltd. | Energy-saving electronic touch switch |
| CN103138729B (en) * | 2013-01-25 | 2015-08-12 | 温州大学 | No-voltage-type electronic touch switch |
| CN205070963U (en) * | 2015-09-23 | 2016-03-02 | 成都索客通信息技术有限公司 | Dab delay switch circuit |
| CN106793372B (en) * | 2016-11-22 | 2024-04-09 | 刘冰冰 | Single live wire capacitive wall touch switch control circuit |
| CN206364785U (en) * | 2017-01-19 | 2017-07-28 | 温州商学院 | A kind of no-voltage list live wire wall touch switch circuit |
| CN106788375A (en) * | 2017-01-19 | 2017-05-31 | 温州商学院 | A kind of no-voltage list live wire wall touch switch circuit |
| CN207117590U (en) * | 2017-02-28 | 2018-03-16 | 刘冰冰 | A kind of more control wall touch switch control circuits |
| CN106879147B (en) * | 2017-03-27 | 2023-08-29 | 刘冰冰 | Single-live-wire full-power touch switch circuit |
| CN107733406A (en) * | 2017-11-01 | 2018-02-23 | 成都雷克尔科技有限公司 | A kind of signal fixed ampllitude bistable state triggering soft-touch control based on constant-current source |
-
2018
- 2018-07-18 CN CN201810806748.9A patent/CN108768374B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208369555U (en) * | 2018-07-18 | 2019-01-11 | 刘冰冰 | Skeleton symbol wall list firewire touch switch circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108768374A (en) | 2018-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109068442B (en) | LED drive circuit compatible with electronic ballast and mains supply and LED lamp | |
| EP2618636B1 (en) | Dimming device and lighting system | |
| CN104219840B (en) | LED switch color temperature regulation controller and LED drive circuit | |
| CN104735873A (en) | Switching circuit and lamp compatible with fluorescent lamp ballast | |
| CN105979661A (en) | Time delay illumination circuit and device | |
| CN107148132B (en) | Single live wire on-state power taking circuit | |
| CN109152184A (en) | lamp control device and lighting system | |
| TW201446078A (en) | Integrated lamp with automatic emergency light and regular light | |
| CN109769321A (en) | A kind of LED lamp circuit with Delayed extinguishing function | |
| CN108768374B (en) | Simple wall single-live-wire touch switch circuit | |
| CN205070963U (en) | Dab delay switch circuit | |
| CN208369555U (en) | Skeleton symbol wall list firewire touch switch circuit | |
| CN202972844U (en) | Ceiling lamp capable of switching brightness levels automatically | |
| CN104507240A (en) | LED (light-emitting diode) lamp control device | |
| CN204518148U (en) | A kind of change-over circuit of compatible fluorescent lamp ballast and lamp | |
| CN211671024U (en) | Automatic light-operated LED drive circuit and drive power supply | |
| WO2015196609A1 (en) | Sectional-type dimming circuit and dimmable lighting device | |
| KR101597149B1 (en) | Delay Lights Out Device For Light Emitting Diode Lamp | |
| CN201629724U (en) | Electronic switch | |
| CN104349536A (en) | Blackout lighting and general lighting integrated lamp | |
| CN110727232B (en) | Intelligent detection zero-power consumption multi-mode switching control circuit | |
| CN103841711B (en) | A kind of LED emergence lighting lamp and drive circuit thereof | |
| CN108601148B (en) | Single-live-wire capacitive touch induction single-double control remote control intelligent energy-saving switch or socket | |
| CN106793372B (en) | Single live wire capacitive wall touch switch control circuit | |
| US10779375B2 (en) | LED driving circuit and protection circuit for DC/DC converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |