CN108768374A - Skeleton symbol wall list firewire touch switch circuit - Google Patents
Skeleton symbol wall list firewire touch switch circuit Download PDFInfo
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- CN108768374A CN108768374A CN201810806748.9A CN201810806748A CN108768374A CN 108768374 A CN108768374 A CN 108768374A CN 201810806748 A CN201810806748 A CN 201810806748A CN 108768374 A CN108768374 A CN 108768374A
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- 239000003990 capacitor Substances 0.000 claims abstract description 57
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 45
- 230000009977 dual effect Effects 0.000 claims abstract description 37
- 230000005669 field effect Effects 0.000 claims description 79
- 230000001105 regulatory effect Effects 0.000 claims description 38
- 238000001514 detection method Methods 0.000 claims description 36
- 230000005611 electricity Effects 0.000 claims description 28
- 230000001360 synchronised effect Effects 0.000 claims description 15
- 230000035945 sensitivity Effects 0.000 claims description 13
- 238000005286 illumination Methods 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 230000000087 stabilizing effect Effects 0.000 claims description 9
- 230000006641 stabilisation Effects 0.000 claims description 7
- 238000011105 stabilization Methods 0.000 claims description 7
- 230000006698 induction Effects 0.000 claims description 5
- 230000001960 triggered effect Effects 0.000 claims description 5
- 230000036410 touch Effects 0.000 claims 57
- 238000012544 monitoring process Methods 0.000 claims 1
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 102100039435 C-X-C motif chemokine 17 Human genes 0.000 description 3
- 101000889048 Homo sapiens C-X-C motif chemokine 17 Proteins 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000006173 Good's buffer Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000126 substance Substances 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
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- 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
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention relates to a kind of skeleton symbol wall list firewire touch switch circuits, it is characterised in that：Including switch main circuit, main dc power supply circuit, main human body touch trigger element；The switch main circuit includes two external terminals of this switching circuit and constitutes the bidirectional thyristor and its trigger circuit of electronic switch, the bidirectional thyristor is connected between described two external terminals, and the main dc power supply circuit is made of direct current linear voltage-stabilizing circuit.The present invention controls the bidirectional thyristor break-make in switch main circuit by the breakdown voltage value at change linear voltage-stabilizing circuit output loading both ends；By changing the charge and discharge of specific capacitor, dual control function is realized, circuit design is simpler, and no-load current is small, strong antijamming capability, differentiates to signal without the mode of coding, and the overall cost of product is greatly lowered, more convenient to use.
Description
Technical field
The present invention relates to a kind of wall touch switch control circuit, especially single firewire skeleton symbol wall list firewire soft-touch control
Circuit.
Background technology
It is wall touch switch good appearance, generous, it touches without abrasion, service life is long, dust-proof, water proof is safe and reliable, deep
Liked by users, wherein single channel dual control, single channel control wall touch switch more and multipath multi-control wall touch switch exists
Occupy larger ratio in electronic touch switch classification, it can be to user using many convenience are brought, however, real currently on the market
Border application is not very extensive, to find out its cause, being since existing wall touch switch control circuit has the following defects：1, general
It is controlled all over using microcontroller, of high cost, especially single control circuit, cost performance are lower, it is difficult to realize popular；2, DC power supply base
This uses Switching Power Supply, of high cost, and has certain High-frequency Interference；3, lack no-voltage control, LED light is filtered for bulky capacitor
（Switching mode）, booting dash current is big, fragile main switching device, and electromagnetic interference is big；4, circuit element is more, the double-deck PCB construction,
Electrolytic capacitor is more, poor reliability, high failure rate, and the pulse anti-interference ability that control signal uses is not high；5, dual control or more control electricity
Each of road control construction of switch is identical, and the control signal that control switch is sent out must could be differentiated by coding, electricity
Road design is complicated, is needed to code before use, and ordinary user is often not easy to grasp, therefore use is cumbersome, installs simultaneously
When wiring it is also more complicated.
Invention content
It is an object of the invention to provide a kind of simple in structure, at low cost, anti-interference in order to overcome the deficiencies of the prior art
Ability is strong, reliable operation, single firewire skeleton symbol wall list firewire touch switch circuit easy to use.
To achieve the above object, the present invention provides a kind of skeleton symbol wall list firewire touch switch circuits, it is characterised in that：
Including switch main circuit, main dc power supply circuit, main human body touch trigger element；The switch main circuit includes this switching circuit
Two external terminals and constitute the bidirectional thyristor and its trigger circuit of electronic switch, the bidirectional thyristor is connected to institute
Between stating two external terminals, the trigger circuit of the bidirectional thyristor includes anti-interference capacitor and resistance, described anti-interference
Capacitance and resistor coupled in parallel are between the poles T1 and the poles G of bidirectional thyristor；The main dc power supply circuit is by direct current linear voltage stabilization electricity
Road is constituted, including full-wave rectifier filter circuit, the first power field effect pipe, biasing resistor, the first below-center offset voltage stabilizing two on first
Pole pipe, the first storage capacitor, the first output filter capacitor, the first isolating diode and the first integrated regulated power supply, the all-wave
A pair of of ac input end of current rectifying and wave filtering circuit be connected to bidirectional thyristor in switch main circuit the poles T2 and G extremely on；Institute
The drain electrode for stating the first power field effect pipe is connect with the full-wave rectifier filter circuit output plus terminal, the first power field effect pipe
Source electrode is connected to by first storage capacitor on full-wave rectifier filter circuit output negative terminal, and biasing resistor is simultaneously on described first
It is associated in the drain electrode and gate pole of the first power field effect pipe, the first below-center offset zener diode cathode is connected to the first power
On the gate pole of field-effect tube, positive anode or negative terminal with the DC output power of first integrated regulated power supply connects and composes
Primary regulator circuit；First integrated regulated power supply selects three-terminal voltage-stabilizing integrated, the first isolating diode anode and the
The source electrode of one power field effect pipe connects, and cathode is connect with the input terminal of first integrated regulated power supply, and described first is integrated
The output of regulated power supply provides DC supply by the first output filter capacitor for main human body touch trigger element；
The main human body touch trigger element triggers integrated circuit by the special touch bistable state with body capacitance detection function
And peripheral cell is constituted, the special touch bistable state triggering IC interior includes human body touch sensor circuit, slows down soon
Fill Anti-shaking circuit, narrow pulse forming circuit, bistable trigger-action circuit and no-voltage detection circuit, the human body touch induced electricity
Road slows down and fills Anti-shaking circuit, narrow pulse forming circuit and bistable trigger-action circuit and be sequentially connected in series soon, the human body touch sense
Circuit input end is answered to be connected with touch sheet and trigger sensitivity adjusting capacitance, the in-phase output end warp of the no-voltage detection circuit
Threshold value zener diode is crossed to connect with the source electrode of first power field effect pipe.
Compared with prior art, switch main circuit of the present invention includes two external terminals and composition of this switching circuit
The bidirectional thyristor and its trigger circuit of electronic switch, the bidirectional thyristor is connected between two external terminals, described
The trigger circuit of bidirectional thyristor includes anti-interference capacitor and discharge resistance, and the anti-interference capacitor and resistor coupled in parallel are in two-way crystalline substance
Between the poles T1 and the poles G of brake tube, main dc power supply circuit is made of direct current linear voltage-stabilizing circuit.The present invention is linear steady by changing
The breakdown voltage value at volt circuit output loading both ends controls the bidirectional thyristor break-make in switch main circuit；It is specific by changing
Dual control function is realized in the charge and discharge of capacitance, and circuit design is simpler, and no-load current is small, strong antijamming capability, without volume
The mode of code differentiates signal the overall cost of product is greatly lowered, more convenient to use.
The present invention is further illustrated below in conjunction with the accompanying drawings and the specific embodiments.
Description of the drawings
Attached drawing 1 is 1 circuit diagram of the specific embodiment of the invention；
Attached drawing 2 is 2 circuit diagram of the specific embodiment of the invention；
Attached drawing 3 is the specific embodiment of the invention 3（Single channel dual control）Main switch circuit schematic diagram；
Attached drawing 4 is the specific embodiment of the invention 3（Single channel dual control）From switching circuit schematic diagram；
Attached drawing 5 is the specific embodiment of the invention 4（Single channel dual control）Main switch circuit schematic diagram；
Attached drawing 6 is the specific embodiment of the invention 4（Single channel dual control）From switching circuit schematic diagram；
Attached drawing 7 is that the special touch bistable state of the present invention triggers integrated circuit specific embodiment internal structure block diagram.
Specific implementation mode
Specific embodiment 1：
As shown in Figure 1, skeleton symbol wall list firewire touch switch circuit of the present invention generally includes switch main circuit, main dc power supply electricity
Road, main human body touch trigger element.The switch main circuit includes two external terminals L and L1 and structure of this switching circuit
At the bidirectional thyristor VT1 and its trigger circuit of electronic switch, the poles T1 and T2 of the bidirectional thyristor VT1 are connected to institute
Between stating two external terminals L and L1, the trigger circuit of the bidirectional thyristor VT1 includes anti-interference capacitor C8 and electric discharge electricity
R11 is hindered, the anti-interference capacitor C8 and discharge resistance R11 are connected in parallel between the poles T1 of bidirectional thyristor VT1 and the poles G, described to open
Close major avenues of approach of the main circuit as load current.
The main dc power supply circuit is made of direct current linear voltage-stabilizing circuit, including full-wave rectifier filter circuit UR, first
Power field effect pipe V1, biasing resistor R2, the first below-center offset zener diode VDZ1, the first storage capacitor C2, first on first
Output filter capacitor C9, the first isolating diode VD1 and the first integrated regulated power supply U2, the full-wave rectifier filter circuit UR's
A pair of of ac input end be connected to bidirectional thyristor VT1 in switch main circuit the poles T2 and G extremely on；First power field
The drain electrode of effect pipe V1 is connect with the full-wave rectifier filter circuit UR output plus terminals, the source electrode warp of the first power field effect pipe V1
It crosses the first storage capacitor C2 to be connected on full-wave rectifier filter circuit UR output negative terminal, biasing resistor R2 is simultaneously on described first
It is associated in the drain electrode and gate pole of the first power field effect pipe V1, the first below-center offset zener diode VDZ1 cathode are connected to
On the gate pole of one power field effect pipe V1, the anode of positive and the first integrated regulated power supply U2 DC output power or negative
End connects and composes primary regulator circuit；The first integrated regulated power supply U2 selects three-terminal voltage-stabilizing integrated, first isolation two
Pole pipe VD1 anodes are connect with the source electrode of the first power field effect pipe V1, the input of cathode and the first integrated regulated power supply U2
End connection, it is main human body touch trigger element that the first output filter capacitor C9 is passed through in the output of the first integrated regulated power supply U2
DC supply VCC2 is provided.When the first below-center offset zener diode VDZ1 anodes and first integrated voltage-stabilized is electric
When the anode of the DC output power of source U2 is connected, the bias current of the first power field effect pipe V1 can also be utilized
To provide DC supply VCC2, such quiescent current smaller jointly for main human body touch trigger element.
The main human body touch trigger element is triggered integrated by the special touch bistable state with body capacitance detection function
Circuit U 1 and peripheral cell are constituted, as shown in fig. 7, being touched including human body inside the special touch bistable state triggering integrated circuit U1
Sensor circuit is touched, slows down fill Anti-shaking circuit, narrow pulse forming circuit, bistable trigger-action circuit and no-voltage detection circuit, institute soon
Human body touch sensor circuit is stated, is slowed down soon and is filled Anti-shaking circuit, narrow pulse forming circuit and bistable trigger-action circuit and be sequentially connected in series company
It connects, and input terminal, output end in the same direction, inverse output terminal pin equipped with no-voltage detection circuit；And human body touch induced electricity
Road input terminal slows down fill Anti-shaking circuit output end, narrow pulse forming circuit output end and bistable trigger-action circuit output end etc. soon
Pin.The human body touch sensor circuit input terminal is connected with touch sheet M and trigger sensitivity and adjusts capacitance C1, described to slow down soon
It fills between Anti-shaking circuit output end and the negative terminal of the DC output power of the first integrated regulated power supply U2 and is connected with stabilization electricity
Hold, the in-phase output end of the no-voltage detection circuit is by threshold value zener diode VDZ2 and first power field effect pipe
The source electrode of V1 connects.As human contact touch sheet M, the input end capacitor of the human body touch sensor circuit increases, described special
It is overturn with the output end level for touching human body touch sensor circuit in bistable state triggering integrated circuit U1.
It needs to meet when selecting the design parameter of the first below-center offset zener diode VDZ1, threshold value zener diode VDZ2
The following conditions：VDZ2<VS< VDZ1+ Vcc2 ,
VS= VDZ1+ Vcc2- Von
Wherein：VDZ1 is the voltage stabilizing value of the first below-center offset zener diode, and VDZ2 is the voltage stabilizing value of threshold value zener diode,
Vcc2 is the positive terminal voltage value of the DC output power of the first integrated regulated power supply U2, and Von is imitated for first power field
Should pipe V1 turning-on voltage, the source voltage of the first power field effect pipe V1 described in VS.
The operation principle of this skeleton symbol wall list firewire touch switch circuit is as follows：
Referring to Fig. 1, be switched on power-up state, bistable state output end inside special touch bistable state triggering integrated circuit U1（7th foot）
For high level（5V）, the input terminal of no-voltage detection circuit（6th foot）And in-phase output end（2nd foot）It is high level, because
（VDZ2+VCC1）>(VDZ1-Von), no current therefore in threshold value zener diode VDZ2, because of DC power supply total load current<
20uA cannot trigger bidirectional thyristor VT1 conductings, therefore switch is in off state；It is special to touch after human body touch touch sheet M
Touch bistable circuit overturning inside bistable state triggering integrated circuit U1, bistable state output end（7th foot）, no-voltage detection circuit
Input terminal（6th foot）, in-phase output end（2nd foot）It is reduced to low level（0V）, because（VDZ2+0）<（VDZ1-Von）, threshold value is steady
Diode VDZ2 conductings, this electric current is pressed to pass through full-wave rectifier filter circuit UR, the first power field effect pipe V1 and bidirectional thyristor
The gate pole G of VT1 makes bidirectional thyristor VT1 triggering and conductings, switch be in conducting state, load electric, the special touch bistable
The output end level of human body touch sensor circuit is overturn again in state triggering integrated circuit U1, is constantly recycled.
Specific embodiment 2：
Due to the development of technology, new lighting source type emerges one after another, and the fluorescent lamp started from inductance type starts to electronic type
Fluorescent lamp, and to current LED light, different types of lighting source performance simultaneously differs, as the power supply of LED light is typically
Alternating current is converted into DC power supply by Switching Power Supply and provides working power for LED light, usually there is great Rong in Switching Power Supply
Capacitance is measured, occurs larger charging current in the moment of unlatching, is easily damaged high-power switch tube；And the daylight that inductance type starts
Lamp will produce an induction high-voltage electricity in the moment of starter.
In order to which the fluorescent lamp for being suitble to control LED light and inductance type to start simultaneously passes through on the basis of specific embodiment 1
It is additionally provided with no-voltage observation circuit, lockout circuit and no-voltage function and removes circuit automatically to realize.As shown in Fig. 2, described zero
Electric voltage observation circuit by the first divider resistance R3 and second partial pressure R4 resistance series arms constitute, the first divider resistance R3 and
Second divider resistance R4 series arms both ends are connect with the direct current output both ends of full-wave rectifier filter circuit UR respectively, the series connection
The dividing point of branch is connect with no-voltage detection circuit input terminal；Selection the first divider resistance R3's and the second divider resistance R4
When specific resistance value, need to meet under the voltage value of the maximum triggering of permission of setting, dividing point is low level.Such as setting is fair
Perhaps it is 10 that the voltage of maximum impact, which is the intrinsic standoff ratio of 30V, the first divider resistance R3 and the second divider resistance R4,:1, special touch is double
The supply voltage that stable state triggers integrated circuit U1 is 5V, then the absolute value of voltage while power is being supplied>30V, no-voltage detection circuit
Input terminal（6th foot）And in-phase output end（2nd foot）It is high level more than 3V, bidirectional thyristor VT1 is not turned on；Only
The absolute value of voltage while power is being supplied<When 30V, the input terminal of no-voltage detection circuit（6th foot）And in-phase output end（2nd foot）It is small
It is low level in 3V, the bidirectional thyristor side VT1 is possible to be connected, therefore claims zero switching voltage, because the voltage of conducting only has peak
/ 10th of threshold voltage, the dash current opened greatly reduce.
The lockout circuit includes blocking diode VD2 and the special touch bistable state triggering integrated circuit U2, described
Block diode VD2 anodes and the special bistable trigger-action circuit output end company touched in bistable state triggering integrated circuit U2
It connects, block diode VD2 cathode are connect with the no-voltage detection circuit input terminal.
It includes the second power field effect pipe V2, time delay resistance R5, delay electricity that the no-voltage function removes circuit automatically
Hold C3, the drain electrode of current-limiting resistance R10, the second power field effect pipe V2 are detected by current-limiting resistance R10 and the no-voltage
Circuit input end connects, the DC output power of the source electrode of the second power field effect pipe V2 and the first integrated regulated power supply U2
Negative terminal connects, and the both ends the time delay resistance R5 are attempted by bistable trigger-action circuit reversed-phase output and the second power field effect respectively
On the grid of pipe V2, the both ends the delay capacitor C3 are attempted by the grid of the second power field effect pipe V2 and first and integrate surely respectively
On the DC output power negative terminal of voltage source U2.
Design block diode VD2 its effect is：No matter whether supply voltage is no-voltage, as long as special touch bistable state
Trigger the bistable state output end of integrated circuit U1（7th foot）For high level, then the input terminal of no-voltage detection circuit（6th foot）,
In-phase output end（2nd foot）It is just high level, bidirectional thyristor VT1 would not be connected, therefore claim block diode.
No-voltage function removes the effect of circuit primarily directed to inductance type fluorescent lamp automatically, will produce height because starting moment
Voltage, the special touch bistable state that this high voltage can make trigger the in-phase output end of the inside no-voltage detection circuit of integrated circuit U1
（2nd foot）Become high level, bidirectional thyristor VT1 can be blocked, fluorescent lamp cannot reliable starter, to avoid this phenomenon from going out
It is existing, after time delay resistance R5, delay capacitor C3 delays 50ms, the second power field effect pipe V2 conductings, because of current-limiting resistance R10 resistance values
Very little, special the 6th foot for touching bistable state triggering integrated circuit U1 is approximately zero, and no-voltage function is removed automatically, feels formula daylight
The reliable starter of lamp energy, the special bistable state output end for touching bistable state triggering integrated circuit U1 when touching shutdown（7th foot）Become
For high level, and the second power field effect pipe V2 is not turned off and is unlikely to generate larger electric current.
In order to reach the work of display current touch switching circuit（Break-make）State, and the instruction night position of the switch, side
Just the purpose used, can be in the skeleton symbol wall list firewire touch switch circuit in specific embodiment 1 and this specific embodiment
Night indicator light circuit is added, further includes specifically upper biasing illumination diode (LED) 1, institute in the main dc power supply circuit
It states and is connected in parallel on the first power field effect pipe V1's after biasing resistor R2 series connection on biasing illumination diode (LED) 1 and first
In drain electrode and gate pole, the upper biasing illumination diode (LED) 1 constitutes night indicator light.
In this way, when the switch main circuit is in the state disconnected, the upper biasing of the first power field effect pipe V1
Electric current flows through the upper biasing illumination diode (LED) 1, and upper biasing illumination diode (LED) 1 shines；At the switch main circuit
When the state of conducting, the input voltage of the ac input end of the full-wave rectifier filter circuit UR is only bidirectional thyristor VT1
Conduction voltage drop, be insufficient to allow upper biasing illumination diode (LED) 1 conducting to shine, therefore can clearly show current touch
The working condition of switching circuit is touched, and serves as night indicator light, while the electric current generated on electroluminescent lamp LED1 can be used as voltage stabilizing
The operating current of power supply VCC2, makes no-load current further decrease.
Specific embodiment 3
This skeleton symbol wall list firewire touch switch circuit is increasing seldom member in addition to that can be used as single channel single control switch circuit application
Dual control skeleton symbol wall list firewire touch switch circuit can also be constituted after part, as single channel double control switch circuit application, so-called list
Road double control switch circuit refers in two different locations（With different switches）The same electrical appliance or headlamp can be controlled.Dual control
Skeleton symbol wall list firewire touch switch circuit includes that dual control skeleton symbol wall list firewire touches main switch circuit and dual control skeleton symbol wall
Single firewire is touched does not set power supply, this not only simplifies electricity from two parts of switching circuit because powering from circuit by main circuit
Road, and the cost of dual control circuit is made to substantially reduce.
As shown in figure 3, on the basis of specific embodiment 1 or 2, then it is equipped with direct current supply resistance R6, anti-interference capacitor C4
Dual control skeleton symbol wall list firewire, which is constituted, with the second isolating diode VD3 touches main switch circuit.The direct current supply resistance R6 mono-
End is connect with DC output power anode VCC1, and the anode of the second isolating diode VD3 fills stabilization electricity with described slow down soon
Stabilization capacitance C5 anodes connection in road, the cathode of the second isolating diode VD3 and the direct current supply resistance R6 are another
Master slave switch the first connecting pin B, the second anti-interference capacitor C4, which are constituted, after the connection of end is connected to second isolating diode
The cathode and DC power supply negative terminal of VD3, the DC power supply negative terminal constitute master slave switch second connection end A.Do not have when from circuit
When trigger signal, the corresponding voltage of the second isolating diode VD3 negative terminals is close to VCC1, positive terminal voltage（Stabilization capacitance C5
Upper voltage）It is consistently less than the voltage of VCC2, the touch that dual control skeleton symbol wall list firewire touches main switch circuit does not influence dual control letter
Formula wall list firewire touches the work from switching circuit, plays good buffer action.
As shown in figure 4, it includes being touched from DC power supply circuit, from human body that dual control skeleton symbol wall list firewire, which is touched from switching circuit,
Touch trigger element and discharge circuit, it is described from DC power supply circuit include the second storage capacitor C6, the second output filter capacitor C9,
Third isolating diode VD4 and the second integrated regulated power supply U2, the second integrated regulated power supply U2 is by the second three-terminal voltage-stabilizing collection
At composition, the second storage capacitor C6 is connected in parallel between the second three-terminal voltage-stabilizing integrated input terminal and power supply negative terminal, and described the
Two output filter capacitor C9 are connected in parallel between the second three-terminal voltage-stabilizing integrated power supply output plus terminal VCC2 and power supply negative terminal, and described the
Three isolating diode VD4 anodes touch the first connecting pin of master slave switch B electricity of main switch circuit with dual control skeleton symbol wall list firewire
The integrated input terminal of connection, the third isolating diode VD4 cathode and the second three-terminal voltage-stabilizing connects and composes described from direct current
Source circuit provides working power to be described from body capacitance touch detection unit.
The body capacitance touch detection unit triggers collection by the special touch bistable state with body capacitance detection function
It is constituted at circuit U 1 and peripheral cell, includes human body touch induced electricity inside the special touch bistable state triggering integrated circuit U1
Road slows down fill Anti-shaking circuit, narrow pulse forming circuit, bistable trigger-action circuit and no-voltage detection circuit soon, and the human body touches
Sensor circuit is touched, is slowed down soon and is filled Anti-shaking circuit, narrow pulse forming circuit and bistable trigger-action circuit and be sequentially connected in series, the people
Body touch induction circuit input terminal is connected with touch sheet M and trigger sensitivity adjusts capacitance C1；The discharge circuit includes electric discharge
Field-effect tube V3, the first below-center offset resistance R14 and electric discharge current-limiting resistance R7, the source electrode and the two or three of the electric discharge field-effect tube V3
Voltage stabilizing is held to integrate the power supply negative terminal connection of U2, the electric discharge current-limiting resistance R7 and institute are passed through in the drain electrode of the electric discharge field-effect tube V3
The connection of third isolating diode VD4 anodes is stated, the grid of the field-effect tube is connect with the output end of burst pulse output circuit,
The first below-center offset resistance R14 is connected between the grid of field-effect tube and source electrode, the third isolating diode VD4 anodes
The first connecting pin of master slave switch B that main switch circuit is touched with dual control skeleton symbol wall list firewire is electrically connected, and the two or three end is steady
The master slave switch second connection end A that the integrated power supply negative terminal of pressure touches main switch circuit with dual control skeleton symbol wall list firewire is electrically connected
It connects.
Further, it is also possible to the input and output side in the second integrated regulator is equipped with from off state indicating circuit, by
Luminous tube LED is formed with current-limiting resistance, and luminous tube anode connects the input terminal of integrated regulator, and cathode is through current-limiting resistance and output
End connection.
The operation principle of this dual control skeleton symbol wall list firewire touch switch circuit is as follows：
It is in the initial state, special when the touch of dual control skeleton symbol wall list firewire is touched from switching circuit someone referring to Fig. 3,4
Touch narrow pulse generator output end in bistable state triggering integrated circuit U1（9th foot）Export a high level, discharge power field effect
Should pipe V2 conducting, through current-limiting resistance R7 repid discharges of discharging, terminals B is reduced to low level, at the same stabilization capacitance C5 be also reduced to it is low
Voltage, the special inside bistable state output end for touching bistable state triggering integrated circuit U1（7th foot）Overturning is zero, and block releases,
Bidirectional thyristor VT1 is connected in zero-voltage state, then touches and overturn again, bidirectional thyristor VT1 cut-offs.
Specific embodiment 4
This specific embodiment is the another embodiment of dual control skeleton symbol wall list firewire touch switch circuit.
As shown in figure 5, the skeleton symbol wall list firewire soft-touch control electricity of this specific embodiment identical as specific embodiment 1 or 2
Road includes switch main circuit, main dc power supply circuit, main human body touch trigger element；The switch main circuit includes this switch electricity
Two external terminals on road and the bidirectional thyristor VT1 and its trigger circuit for constituting electronic switch, the bidirectional thyristor VT1
It is connected between described two external terminals, the trigger circuit of the bidirectional thyristor VT1 includes anti-interference capacitor C8 and puts
Resistance R11, the anti-interference capacitor C8 and discharge resistance R11 are connected in parallel between the poles T1 of bidirectional thyristor VT1 and the poles G；Institute
It states main dc power supply circuit to be made of direct current linear voltage-stabilizing circuit, including full-wave rectifier filter circuit UR, the first power field effect
Pipe V1, biasing resistor R2, the first below-center offset zener diode VDZ1, the first storage capacitor C2, the first output filtered electrical on first
A pair of the exchange for holding C9, the first isolating diode VD1 and the first integrated regulated power supply U2, the full-wave rectifier filter circuit UR is defeated
Enter end be connected to bidirectional thyristor VT1 in switch main circuit the poles T2 and G extremely on；The first power field effect pipe V1's
Drain electrode is connect with the full-wave rectifier filter circuit UR output plus terminals, and the source electrode of the first power field effect pipe V1 passes through described first
Storage capacitor C2 is connected on full-wave rectifier filter circuit UR output negative terminals, and biasing resistor R2 is connected in parallel on the first work(on described first
In the drain electrode and gate pole of rate field-effect tube V1, the first below-center offset zener diode VDZ1 cathode are connected to the first power field effect
Should be on the gate pole of pipe V1, positive anode or negative terminal with the DC output power of the first integrated regulated power supply U2 connects and composes
Primary regulator circuit；The first integrated regulated power supply U2 selects three-terminal voltage-stabilizing integrated, the first isolating diode VD1 anodes
It is connect with the source electrode of the first power field effect pipe V1, cathode is connect with the input terminal of the first integrated regulated power supply U2, described
The output of first integrated regulated power supply U2 provides direct current work by the first output filter capacitor C9 for main human body touch trigger element
Make power supply VCC2.
The main human body touch trigger element touches collection by the anti-interference bi-stable type of height with body capacitance detection function
Constitute locking-typed touch trigger circuit at circuit U 3 and peripheral cell, the peripheral cell include third power field effect pipe V4,
Trigger triode V5, triggering resistance R8, the human body touch induction input circuit include that touch sheet M and trigger sensitivity adjust electricity
Hold C7, the touch sheet M is connect with the touch sensible input terminal that high anti-interference latch-type touches integrated circuit U3, the third work(
The source electrode of rate field-effect tube V4 and the negative terminal of DC power supply connect, and drain triggered adjustment of sensitivity capacitance C7 and high anti-interference lock
The touch sensible input terminal connection that type touches integrated circuit U3 is deposited, the trigger triode V5 is PNP type triode, triggers three poles
The emitter of pipe V5 is connected to power input, the collector of trigger triode V5 with the first isolating diode VD1 cathode
It connect, is equipped between the emitter and base stage of trigger triode V5 on second partially with the grid of the third power field effect pipe V4
Resistance R16 is set, described triggering one end resistance R8 is connect with the base stage of trigger triode V5, the triggering resistance R8 other end conducts
Dual control skeleton symbol wall list firewire touches the first connecting pin of master slave switch B of main switch circuit, and the DC power supply negative terminal constitutes master
From switch second connection end A, main switch circuit is touched to constitute dual control skeleton symbol wall list firewire.
As shown in fig. 6, from switching circuit include from DC power supply circuit, from human body touch trigger element and discharge circuit,
It is described from DC power supply circuit include the second storage capacitor C6, the second output filter capacitor C9, third isolating diode VD4 and the
Two integrated regulated power supply U2, the second integrated regulated power supply U2 are constituted by the second three-terminal voltage-stabilizing is integrated, the second energy storage electricity
Hold C6 to be connected in parallel between the second three-terminal voltage-stabilizing integrated input terminal and power supply negative terminal, the second output filter capacitor C9 is connected in parallel on
Between second three-terminal voltage-stabilizing integrated power supply output plus terminal and power supply negative terminal, the third isolating diode VD4 anodes and dual control
Skeleton symbol wall list firewire touches the first connecting pin of master slave switch B electrical connections of main switch circuit, the third isolating diode VD4
The input terminal that cathode and the second three-terminal voltage-stabilizing integrate is touched from DC power supply circuit to be described from body capacitance described in connecting and composing
Detection unit provides working power；
It is described that integrated circuit is touched by the anti-interference synchronized model of height with body capacitance detection function from human body touch trigger element
U4 and peripheral cell are constituted, and the anti-interference synchronized model of height touches integrated circuit U4 positive electricity source connections（5th foot）, negative supply company
Connect end（2nd foot）It integrates the positive and negative output ends of U2 with the second voltage stabilizing respectively to connect, high anti-interference synchronized model touches integrated circuit U4's
Export original state end（4th foot）U2 negative terminals are integrated with the second integrated voltage-stabilized to connect, touch sheet M touches integrated circuit with synchronized model
The touch end of U4（1st foot）Connection, synchronized model touch the 3rd foot of touch sensitivity adjustable side of integrated circuit U4 and second and integrate surely
Pressure is connected with adjustment of sensitivity capacitance C14 between integrating U2 negative terminals.
The discharge circuit includes electric discharge field-effect tube V3, the first below-center offset resistance R14 and electric discharge current-limiting resistance R7, described
The source electrode of electric discharge field-effect tube V3 is connect with the power supply negative terminal that the second three-terminal voltage-stabilizing integrates, the electric discharge field-effect tube V3 grids and
The 6th foot of ic output connects, the drain electrode of the electric discharge field-effect tube V3 by the electric discharge current-limiting resistance R7 with it is described
Third isolating diode VD4 anodes connect, and the third isolating diode VD4 anodes are touched with dual control skeleton symbol wall list firewire and led
The first connecting pin of master slave switch B of switching circuit is electrically connected, the integrated power supply negative terminal of second three-terminal voltage-stabilizing and dual control skeleton symbol
Wall list firewire touches the master slave switch second connection end A electrical connections of main switch circuit.
The operation principle of this dual control skeleton symbol wall list firewire touch switch circuit is as follows：
As shown in figure 5, in original state main switch, high anti-interference locking-typed touch integrated circuit U3 output ends（6th foot）For height
Level, no current in the first below-center offset zener diode VZD2, bidirectional thyristor VT1 cut-offs, switch locking off-state；Work as people
After body touches touch sheet M, the in-phase output end for the no-voltage detection circuit that high anti-interference bi-stable type touches integrated circuit U3 turns over
Switch to low level, the first below-center offset zener diode VZD2 generates trigger current, bidirectional thyristor VT1 conductings, and switch locking is led
Logical state.
From switch operation principle as shown in fig. 6, original state, touches integrated circuit U4's from the high anti-interference synchronized model of switch
Output end（6th foot）For low level, the V3 cut-offs of discharge power field-effect tube do not work to main circuit switch, work as human body touch
After touch sheet M, high anti-interference synchronized model touches the output end of integrated circuit U4（6th foot）Overturning is high level, discharge power field
Effect pipe V3 conducting, through R7 repid discharges, the 1st terminals B current potentials drop to zero, at the same in Fig. 5 main circuit triode V5 bases
Extremely triggered resistance R8 conductings, collector of the third power field effect pipe V4 grids through V5 must conduct, high anti-interference bistable state
Type touches the touch point of integrated circuit U3（1st foot）Drain electrode through adjustment of sensitivity capacitance C7 and third power field effect pipe V4,
Source electrode is equivalent to touch point to ground（1st foot）Input capacitance becomes larger, and high anti-interference bi-stable type touches inside integrated circuit U3
Bistable circuit is overturn, output end（6th foot）Become low level, bidirectional thyristor VT1 conductings, switch is closed；When human body from
Open touch sheet M, the output end that high anti-interference synchronized model touches integrated circuit U4 is quickly zeroed reset, when human body touches touch again
After piece M, it is high level that the output end of high anti-interference synchronized model touch integrated circuit U4 is overturn again, and through electric discharge, highly resistance is dry in Fig. 5
It disturbs bistable circuit in the inside bi-stable type touch integrated circuit U3 and overturns output end again（6th foot）High level is exported, it is two-way
Thyristor VT1 cut-offs, switch are restored to off state again.
For the input and output side of the second integrated regulator belonging to the working condition for indicating switch from switch
It is additionally provided with from off state indicating circuit, is made of with current-limiting resistance luminous tube LED, luminous tube anode connects integrated regulator
Input terminal, cathode are connect through current-limiting resistance with output end.This method is most simple most practical.
Claims (8)
1. a kind of skeleton symbol wall list firewire touch switch circuit, it is characterised in that：Including switch main circuit, main dc power supply electricity
Road, main human body touch trigger element；The switch main circuit includes two external terminals and composition electronics of this switching circuit
The bidirectional thyristor and its trigger circuit of switch, the bidirectional thyristor is connected between described two external terminals, described
The trigger circuit of bidirectional thyristor includes anti-interference capacitor and resistance, and the anti-interference capacitor and resistor coupled in parallel are in bidirectional thyristor
The poles T1 and the poles G between；The main dc power supply circuit is made of direct current linear voltage-stabilizing circuit, including full-wave rectifier filter electricity
Road, the first power field effect pipe, biasing resistor, the first below-center offset zener diode, the first storage capacitor, the first output on first
Filter capacitor, the first isolating diode and the first integrated regulated power supply, a pair of of exchange input of the full-wave rectifier filter circuit
End be connected to bidirectional thyristor in switch main circuit the poles T2 and G extremely on；The drain electrode of first power field effect pipe with
The full-wave rectifier filter circuit output plus terminal connection, the source electrode of the first power field effect pipe connect by first storage capacitor
It is connected on full-wave rectifier filter circuit output negative terminal, biasing resistor is connected in parallel on the drain electrode of the first power field effect pipe on described first
On gate pole, the first below-center offset zener diode cathode is connected on the gate pole of the first power field effect pipe, anode and institute
It states the anode of the DC output power of the first integrated regulated power supply or negative terminal connects and composes primary regulator circuit；Described first is integrated
Regulated power supply selects three-terminal voltage-stabilizing integrated, and the first isolating diode anode is connect with the source electrode of the first power field effect pipe,
Cathode is connect with the input terminal of first integrated regulated power supply, and the output of first integrated regulated power supply is by the first output
Filter capacitor provides DC supply for main human body touch trigger element；
The main human body touch trigger element triggers integrated circuit by the special touch bistable state with body capacitance detection function
And peripheral cell is constituted, the special touch bistable state triggering IC interior includes human body touch sensor circuit, slows down soon
Fill Anti-shaking circuit, narrow pulse forming circuit, bistable trigger-action circuit and no-voltage detection circuit, the human body touch induced electricity
Road slows down and fills Anti-shaking circuit, narrow pulse forming circuit and bistable trigger-action circuit and be sequentially connected in series soon, the human body touch sense
Circuit input end is answered to be connected with touch sheet and trigger sensitivity adjusting capacitance, the in-phase output end warp of the no-voltage detection circuit
Threshold value zener diode is crossed to connect with the source electrode of first power field effect pipe.
2. skeleton symbol wall list firewire touch switch circuit according to claim 1, it is characterised in that：It is additionally provided with no-voltage prison
Slowdown monitoring circuit, lockout circuit and no-voltage function remove circuit automatically, and the no-voltage observation circuit is by the first divider resistance and
Two divider resistance series arms are constituted, and first divider resistance and the second divider resistance series arm both ends are whole with all-wave respectively
The direct current output both ends connection of filter circuit is flowed, the dividing point of the series arm is connect with no-voltage detection circuit input terminal；
Institute's lockout circuit includes block diode and special the touchs bistable state triggers integrated circuit, the block diode cathode and
The special bistable trigger-action circuit output end connection touched in bistable state triggering integrated circuit, blocks diode cathode and institute
State the connection of no-voltage detection circuit input terminal；The no-voltage function remove automatically circuit include the second power field effect pipe,
Time delay resistance, delay capacitor, current-limiting resistance, the drain electrode of second power field effect pipe is by current-limiting resistance and the no-voltage
Detection circuit input terminal connects, the DC output power of the source electrode of the second power field effect pipe and first integrated regulated power supply
Negative terminal connects, and the time delay resistance both ends are attempted by bistable trigger-action circuit reversed-phase output and the second power field effect pipe respectively
Grid on, the delay capacitor both ends are attempted by the grid and the first integrated regulated power supply of the second power field effect pipe respectively
On DC output power negative terminal.
3. skeleton symbol wall list firewire touch switch circuit according to claim 1, it is characterised in that：The main dc power supply
Circuit further includes upper biasing illumination diode, and institute is connected in parallel on after biasing resistor series connection on the upper biasing illumination diode and first
On the drain and gate for stating the first power field effect pipe, the upper biasing illumination diode constitutes night indicator light.
4. according to claim 1-3 any one of them skeleton symbol wall list firewire touch switch circuits, it is characterised in that：It is additionally provided with
Direct current supply resistance, anti-interference capacitor and the second isolating diode constitute dual control skeleton symbol wall list firewire and touch main switch circuit,
Direct current supply resistance one end is connect with DC output power anode, and the anode of second isolating diode is put soon with described
Stabilization capacitance anode connection in trickle charge Anti-shaking circuit, the cathode of second isolating diode and the direct current supply resistance are another
Master slave switch the first connecting pin B is constituted after the connection of one end, second anti-interference capacitor is connected to second isolating diode
Cathode and DC power supply negative terminal, the DC power supply negative terminal constitute master slave switch second connection end A；
From switching circuit include from DC power supply circuit, from human body touch trigger element and discharge circuit, it is described from DC power supply
Circuit includes the second storage capacitor, the second output filter capacitor, third isolating diode and the second integrated regulated power supply, and described the
Two integrated regulated power supplies are constituted by the second three-terminal voltage-stabilizing is integrated, and second storage capacitor is connected in parallel on what the second three-terminal voltage-stabilizing integrated
Between input terminal and power supply negative terminal, second output filter capacitor is connected in parallel on the integrated power supply output plus terminal of the second three-terminal voltage-stabilizing
Between power supply negative terminal, the third isolating diode anode touches the principal and subordinate of main switch circuit with dual control skeleton symbol wall list firewire
The first connecting pin of switch B is electrically connected, and the third isolating diode cathode connect structure with the input terminal that the second three-terminal voltage-stabilizing integrates
At it is described from DC power supply circuit to provide working power from body capacitance touch detection unit；
Described triggered from body capacitance touch detection unit by the special touch bistable state with body capacitance detection function integrates
Circuit and peripheral cell are constituted, and special the touchs bistable state triggering IC interior includes human body touch sensor circuit, soon
Slow down and fills Anti-shaking circuit, narrow pulse forming circuit, bistable trigger-action circuit and no-voltage detection circuit, the human body touch induction
Circuit slows down and fills Anti-shaking circuit, narrow pulse forming circuit and bistable trigger-action circuit and be sequentially connected in series soon, the human body touch
Sensor circuit input terminal is connected with touch sheet and trigger sensitivity adjusts capacitance；The discharge circuit include electric discharge field-effect tube,
First below-center offset resistance and electric discharge current-limiting resistance, the power supply that the source electrode and the second three-terminal voltage-stabilizing of the electric discharge field-effect tube are integrated are negative
The drain electrode of end connection, the electric discharge field-effect tube connects by the electric discharge current-limiting resistance R7 and the third isolating diode anode
It connects, the grid of the field-effect tube is connect with the output end of burst pulse output circuit, and the first below-center offset resistance is connected to
Between the grid and source electrode of field-effect tube, the third isolating diode anode touches main switch with dual control skeleton symbol wall list firewire
The first connecting pin of master slave switch B of circuit is electrically connected, the integrated power supply negative terminal of second three-terminal voltage-stabilizing and dual control skeleton symbol wall
Single firewire touches the master slave switch second connection end A electrical connections of main switch circuit.
5. skeleton symbol wall list firewire touch switch circuit according to claim 4, it is characterised in that：It is integrated in the second voltage stabilizing
The input and output side of circuit is additionally provided with from off state indicating circuit, is made of luminous tube and current-limiting resistance, luminous tube anode
The input terminal of integrated regulator is connect, cathode is connect through current-limiting resistance with output end.
6. a kind of skeleton symbol wall list firewire touch switch circuit, it is characterised in that：Including switch main circuit, main dc power supply electricity
Road, main human body touch trigger element；The switch main circuit includes two external terminals and composition electronics of this switching circuit
The bidirectional thyristor and its trigger circuit of switch, the bidirectional thyristor is connected between described two external terminals, described
The trigger circuit of bidirectional thyristor includes anti-interference capacitor and resistance, and the anti-interference capacitor and resistor coupled in parallel are in bidirectional thyristor
The poles T1 and the poles G between；The main dc power supply circuit is made of direct current linear voltage-stabilizing circuit, including full-wave rectifier filter electricity
It is road, the first power field effect pipe V1, biasing resistor on first, the first below-center offset zener diode, the first storage capacitor, first defeated
Go out filter capacitor, the first isolating diode and the first integrated regulated power supply, a pair of exchange of the full-wave rectifier filter circuit is defeated
Enter end be connected to bidirectional thyristor in switch main circuit the poles T2 and G extremely on；The drain electrode of first power field effect pipe
It is connect with the full-wave rectifier filter circuit output plus terminal, the source electrode of the first power field effect pipe passes through first storage capacitor
It is connected on full-wave rectifier filter circuit output negative terminal, biasing resistor is connected in parallel on the leakage of the first power field effect pipe on described first
On pole and grid, the first below-center offset zener diode VDZ1 cathode are connected on the gate pole of the first power field effect pipe, just
Pole and the anode or negative terminal of the DC output power of first integrated regulated power supply connect and compose primary regulator circuit；Described
One integrated regulated power supply selects three-terminal voltage-stabilizing integrated, the source electrode of the first isolating diode anode and the first power field effect pipe
Connection, cathode connect with the input terminal of first integrated regulated power supply, and the output of first integrated regulated power supply passes through the
One output filter capacitor provides DC supply for main human body touch trigger element；
The main human body touch trigger element touches integrated electricity by the anti-interference locking-typed type of height with body capacitance detection function
Road and peripheral cell are constituted, and the human body touch induction input circuit includes touch sheet, and the peripheral cell further includes third work(
Rate field-effect tube, trigger triode, triggering resistance, the touch sheet touch the touch sense of integrated circuit with high anti-interference latch-type
Input terminal is answered to connect, the source electrode of the third power field effect pipe and the negative terminal of DC power supply connect, and drain triggered sensitivity
It adjusts capacitance and is connect with the touch sensible input terminal that high anti-interference latch-type touches integrated circuit, the trigger triode is PNP
Type triode, the emitter of trigger triode are connected to power input with the first isolating diode cathode, trigger three poles
The collector of pipe is connect with the grid of the third power field effect pipe, and the is equipped between the emitter and base stage of trigger triode
The base stage of biasing resistor on two, described triggering resistance one end and trigger triode connects, and the triggering resistance other end is as double
The first connecting pin of master slave switch B that skeleton symbol wall list firewire touches main switch circuit is controlled, the DC power supply negative terminal constitutes principal and subordinate
Second connection end A is switched, main switch circuit is touched to constitute dual control skeleton symbol wall list firewire；
From switching circuit include from DC power supply circuit, from human body touch trigger element and discharge circuit, it is described from DC power supply
Circuit includes the second storage capacitor, the second output filter capacitor, third isolating diode and the second integrated regulated power supply, and described the
Two integrated regulated power supplies are constituted by the second three-terminal voltage-stabilizing is integrated, and second storage capacitor is connected in parallel on what the second three-terminal voltage-stabilizing integrated
Between input terminal and power supply negative terminal, second output filter capacitor is connected in parallel on the integrated power supply output plus terminal of the second three-terminal voltage-stabilizing
Between power supply negative terminal, the third isolating diode anode touches the principal and subordinate of main switch circuit with dual control skeleton symbol wall list firewire
The first connecting pin of switch B is electrically connected, and the third isolating diode cathode connect structure with the input terminal that the second three-terminal voltage-stabilizing integrates
At described working power is provided from body capacitance touch detection unit from DC power supply circuit to be described；
It is described that integrated circuit is touched by the anti-interference synchronized model of height with body capacitance detection function from human body touch trigger element
And peripheral cell is constituted, the anti-interference synchronized model touch integrated circuit positive electricity source connection of height, negative electricity source connection respectively with
Second voltage stabilizing integrates positive and negative output end connection, and high anti-interference synchronized model touches the output original state end and second of integrated circuit
Integrated voltage-stabilized integrates negative terminal connection, and the touch end that touch sheet touches integrated circuit with synchronized model is connect, and synchronized model touches integrated electricity
The touch sensitivity adjustable side on road and the second integrated voltage-stabilized are connected with adjustment of sensitivity capacitance between integrating negative terminal；
The discharge circuit includes electric discharge field-effect tube, the first below-center offset resistance and electric discharge current-limiting resistance, the electric discharge field-effect
The source electrode of pipe is connect with the power supply negative terminal that the second three-terminal voltage-stabilizing integrates, and the electric discharge fet gate touches integrated with synchronized model
The touch output end of circuit connects, and the drain electrode of the electric discharge field-effect tube is isolated by the electric discharge current-limiting resistance with the third
Diode cathode connects, and the third isolating diode anode touches the principal and subordinate of main switch circuit with dual control skeleton symbol wall list firewire
The first connecting pin of switch B is electrically connected, and the integrated power supply negative terminal of second three-terminal voltage-stabilizing is touched with dual control skeleton symbol wall list firewire
The master slave switch second connection end A electrical connections of main switch circuit.
7. skeleton symbol wall list firewire touch switch circuit according to claim 6, it is characterised in that：The main dc power supply
Circuit further includes upper biasing illumination diode, and institute is connected in parallel on after biasing resistor series connection on the upper biasing illumination diode and first
In the drain electrode and gate pole for stating the first power field effect pipe, the upper biasing illumination diode constitutes night indicator light.
8. the skeleton symbol wall list firewire touch switch circuit described according to claim 6 or 7, it is characterised in that：In the second voltage stabilizing
The input and output side of integrated circuit is additionally provided with from off state indicating circuit, is made of luminous tube and current-limiting resistance, luminous tube
Anode connects the input terminal of integrated regulator, and cathode is connect through current-limiting resistance with output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810806748.9A CN108768374A (en) | 2018-07-18 | 2018-07-18 | Skeleton symbol wall list firewire touch switch circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810806748.9A CN108768374A (en) | 2018-07-18 | 2018-07-18 | Skeleton symbol wall list firewire touch switch circuit |
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| Publication Number | Publication Date |
|---|---|
| CN108768374A true CN108768374A (en) | 2018-11-06 |
Family
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|---|---|---|---|
| CN201810806748.9A Pending CN108768374A (en) | 2018-07-18 | 2018-07-18 | Skeleton symbol wall list firewire touch switch circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114200371A (en) * | 2021-08-09 | 2022-03-18 | 威凯检测技术有限公司 | A ability verification device for electrostatic discharge immunity is experimental |
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