CN107733417A - A kind of low interference soft-touch control of constant current - Google Patents
A kind of low interference soft-touch control of constant current Download PDFInfo
- Publication number
- CN107733417A CN107733417A CN201711058026.1A CN201711058026A CN107733417A CN 107733417 A CN107733417 A CN 107733417A CN 201711058026 A CN201711058026 A CN 201711058026A CN 107733417 A CN107733417 A CN 107733417A
- Authority
- CN
- China
- Prior art keywords
- resistance
- triode
- diode
- poles
- amplifier
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/461—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using an operational amplifier as final control device
-
- 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
-
- 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
- H03K2017/9602—Touch switches characterised by the type or shape of the sensing electrodes
- H03K2017/9604—Touch switches characterised by the type or shape of the sensing electrodes characterised by the number of electrodes
- H03K2017/9613—Touch switches characterised by the type or shape of the sensing electrodes characterised by the number of electrodes using two electrodes per touch switch
Abstract
The invention discloses a kind of low interference soft-touch control of constant current, characterized in that, mainly by when base chip U2, triode VT1, triode VT2, triode VT3, triode VT4, diode rectifier U1, touch sheet M1, touch sheet M2, fuse FU, the first amplifying circuit being connected with touch sheet M1 etc. are formed.The present invention only need to can start or stop equipment by the different touch sheet of human body touch, and by handling trigger signal, make trigger signal more stable, avoid soft-touch control from malfunctioning.The present invention possesses constant operating current, therefore it has very high stability.The present invention can be amplified to the noise signal of human body sensing, enable the invention to more accurately identify noise signal, reduce the malfunction rate of the present invention.
Description
Technical field
The present invention relates to a kind of soft-touch control, in particular to a kind of low interference soft-touch control of constant current.
Background technology
Many plant equipment are using soft-touch control come the startup and stopping of control device at present, but traditional touch is opened
Malfunction rate height is closed, has a strong impact on the normal operation of equipment.
The content of the invention
A kind of the defects of it is an object of the invention to overcome traditional soft-touch control malfunction rate high, there is provided the low interference of constant current
Soft-touch control.
The purpose of the present invention is achieved through the following technical solutions：The low interference soft-touch control of a kind of constant current, mainly by Shi Jixin
Piece U2, triode VT1, triode VT2, triode VT3, triode VT4, diode rectifier U1, touch sheet M1, touch sheet
M2, fuse FU, fixed amplitude circuit, the first amplifying circuit being connected with touch sheet M1, second to be connected with touch sheet M2 are put
Big circuit, the resistance R11 being serially connected between the first amplifying circuit and Shi Ji chips U2 TRI pins, it is serially connected in the second amplification electricity
Resistance R12, P pole between road and Shi Ji chips U2 THRE pins with when base chip U2 TRI pins be connected, N poles and when
The diode D4 that base chip U2 RE pins are connected, be serially connected in diode D4 N poles and when base chip U2 VCC pins between
Resistance R10, N pole with when base chip U2 THRE pins be connected, P poles with when base chip U2 GND pins be connected two
Pole pipe D5, positive pole with when base chip U2 CONT pins be connected, the electric capacity C2 that negative pole is connected with diode D5 P poles, string
Resistance R8 when being connected between base chip U2 DIS pins and GND pins, one end with when base chip U2 GND pins be connected,
The resistance R9 of other end ground connection, resistance R7, the P pole being serially connected between triode VT2 base stage and fixed amplitude circuit and triode VT4
Colelctor electrode be connected, N poles with when base chip U2 the diode D3 that is connected of RE pins, be serially connected in diode D3 N poles and
Resistance R6, N pole between triode VT3 colelctor electrode is connected with triode VT3 emitter stage, P poles and electric capacity C2 negative pole
The diode D2 being connected, the relay K being in parallel with diode D2, it is serially connected in triode VT1 base stage and triode VT2
Resistance R4 between colelctor electrode, the resistance R5 being serially connected between triode VT2 colelctor electrode and diode D2 P poles, is serially connected in
Resistance R3 between triode VT1 emitter stage and triode VT2 base stage, it is serially connected in triode VT1 emitter stage and three poles
Resistance R2 between pipe VT2 emitter stage, it is serially connected in diode rectifier U1 cathode output end and triode VT2 emitter stage
Between resistance R1, N pole be connected with diode rectifier U1 cathode output end, P poles are connected with diode D2 P poles
Voltage-regulator diode D1, and positive pole is connected with voltage-regulator diode D1 N poles, negative pole is connected with voltage-regulator diode D1 P poles
Electric capacity C1 composition；Another inputs extremely common shape with it after fuse FU for an input pole of the diode rectifier U1
Into power input；The cathode output end of the diode rectifier U1 is connected with electric capacity C1 negative pole；The triode VT3
Base stage be connected with triode VT4 emitter stage；The colelctor electrode of the triode VT1 is connected with diode D3 N poles；Institute
State fixed amplitude circuit also with when base chip U2 OUT pins be connected.
The fixed amplitude circuit is connected including amplifier P101, P pole with amplifier P101 positive pole, N poles and amplifier
Voltage-regulator diode D102, the N pole that P101 output end is connected with when base chip U2 OUT pins be connected, P poles ground connection it is steady
Press diode D101, the resistance R101 being serially connected between voltage-regulator diode D101 N poles and amplifier P101 positive pole, positive pole with
Amplifier P101 negative pole is connected, the electric capacity C101 of negative pole ground connection, and the resistance R102 being in parallel with electric capacity C101, positive pole is through electricity
It is connected after resistance R103 with amplifier P101 negative pole, the electric capacity that negative pole is connected after resistance R7 with triode VT4 base stage
C102, the resistance R104 being serially connected between electric capacity C102 negative pole and amplifier P101 output end.
First amplifying circuit is by amplifier P1, the resistance R13 being serially connected between amplifier P1 negative pole and output end,
Positive pole is connected with amplifier P1 negative pole, the electric capacity C3 of negative pole ground connection, and one end is connected, separately with amplifier P1 positive pole
The resistance R14 compositions that one end is connected with electric capacity C3 negative pole；The output end of the amplifier P1 after resistance R11 with when base core
Piece U2 TRI pins are connected, its positive pole is then connected with touch sheet M1.
Second amplifying circuit is by amplifier P2, the resistance R15 being serially connected between amplifier P2 negative pole and output end,
Positive pole is connected with amplifier P2 negative pole, the electric capacity C4 of negative pole ground connection, and one end is connected, separately with amplifier P2 positive pole
The resistance R16 compositions that one end is connected with electric capacity C4 negative pole；The output end of the amplifier P2 after resistance R12 with when base core
Piece U2 THRE pins are connected, its positive pole is then connected with touch sheet M2.
Base chip U2 is NE555 integrated chips when described.
The present invention compared with the prior art, has advantages below and beneficial effect：
(1) present invention need to can only start or stop equipment by the different touch sheet of human body touch, and by touching
Signalling is handled, and is made trigger signal more stable, is avoided soft-touch control from malfunctioning.
(2) present invention possesses constant operating current, therefore it has very high stability.
(3) present invention can be amplified to the noise signal of human body sensing, enable the invention to more accurately to identify miscellaneous
Ripple signal, reduce the malfunction rate of the present invention.
Brief description of the drawings
Fig. 1 is the integrated circuit structure chart of the present invention.
Fig. 2 is the structure chart of the fixed amplitude circuit of the present invention.
Embodiment
The present invention is described in further detail with reference to embodiment, but embodiments of the present invention are not limited to
This.
Embodiment
As shown in figure 1, the present invention mainly by when base chip U2, triode VT1, triode VT2, triode VT3, triode
VT4, diode rectifier U1, touch sheet M1, touch sheet M2, fuse FU, resistance R1, resistance R2, resistance R3, resistance R4, electricity
Hinder R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, voltage-regulator diode D1, diode
D2, diode D3, diode D4, diode D5, relay K, electric capacity C1, electric capacity C2, the first amplifying circuit, fixed amplitude circuit and
Second amplifying circuit forms.
During connection, first amplifying circuit is connected with touch sheet M1, and second amplifying circuit is then connected with touch sheet M2
Connect, resistance R11 is serially connected between the first amplifying circuit and Shi Ji chips U2 TRI pins.Resistance R12 is serially connected in the second amplification electricity
Between road and Shi Ji chips U2 THRE pins.Diode D4 P poles with when base chip U2 TRI pins be connected, N poles and when
Base chip U2 RE pins are connected.Resistance R10 be serially connected in diode D4 N poles and when base chip U2 VCC pins between.Two
Pole pipe D5 N poles with when base chip U2 THRE pins be connected, P poles with when base chip U2 GND pins be connected.Electric capacity C2
Positive pole with when base chip U2 CONT pins be connected, negative pole is connected with diode D5 P poles.Base when resistance R8 is serially connected in
Between chip U2 DIS pins and GND pins.Resistance R9 one end with when base chip U2 GND pins be connected, another termination
Ground.Resistance R7 is serially connected between triode VT2 base stage and fixed amplitude circuit, the fixed amplitude circuit also with when base chip U2 OUT
Pin is connected.Diode D3 P poles are connected with triode VT4 colelctor electrode, N poles with when base chip U2 RE pins be connected
Connect.Resistance R6 is serially connected between diode D3 N poles and triode VT3 colelctor electrode.
Meanwhile diode D2 N poles are connected with triode VT3 emitter stage, P poles are connected with electric capacity C2 negative pole.
Relay K is in parallel with diode D2.Resistance R4 is serially connected between triode VT1 base stage and triode VT2 colelctor electrode.Electricity
Resistance R5 is serially connected between triode VT2 colelctor electrode and diode D2 P poles.Resistance R3 is serially connected in triode VT1 emitter stage
Between triode VT2 base stage.Between the resistance R2 emitter stage for being serially connected in triode VT1 and triode VT2 emitter stage.
Resistance R1 is serially connected between diode rectifier U1 cathode output end and triode VT2 emitter stage.Voltage-regulator diode D1 N
Pole is connected with diode rectifier U1 cathode output end, and P poles are connected with diode D2 P poles.Electric capacity C1 positive pole with
Voltage-regulator diode D1 N poles are connected, and negative pole is connected with voltage-regulator diode D1 P poles.The one of the diode rectifier U1
Individual input pole is collectively forming power input with its another input pole after fuse FU and connects civil power.The diode rectification
Device U1 cathode output end is connected with electric capacity C1 negative pole.The base stage of the triode VT3 and triode VT4 emitter stage phase
Connection.The colelctor electrode of the triode VT1 is connected with diode D3 N poles.
First amplifying circuit is by amplifier P1, the resistance R13 being serially connected between amplifier P1 negative pole and output end, just
Pole is connected with amplifier P1 negative pole, the electric capacity C3 of negative pole ground connection, and one end is connected with amplifier P1 positive pole, is another
Hold the resistance R14 compositions being connected with electric capacity C3 negative pole.The output end of the amplifier P1 after resistance R11 with when base chip
U2 TRI pins are connected, its positive pole is then connected with touch sheet M1.
The noise signal of touch sheet M1 outputs is input to amplifier P1, defeated through resistance R11 after being amplified by amplifier P1
Enter then base chip U2, base chip U2 more accurately identifies noise signal when enabling, so as to enable the invention to more accurately
Control turntable.Electric capacity C3 plays coupling, and its capacitance is 10 μ F；Resistance R13 and resistance R14 resistance are 50K Ω, are put
Big device P1 model OP364.
Second amplifying circuit is by amplifier P2, the resistance R15 being serially connected between amplifier P2 negative pole and output end,
Positive pole is connected with amplifier P2 negative pole, the electric capacity C4 of negative pole ground connection, and one end is connected, separately with amplifier P2 positive pole
The resistance R16 compositions that one end is connected with electric capacity C4 negative pole；The output end of the amplifier P2 after resistance R12 with when base core
Piece U2 THRE pins are connected, its positive pole is then connected with touch sheet M2.
The noise signal of touch sheet M2 outputs is input to amplifier P2, defeated through resistance R12 after being amplified by amplifier P2
Enter then base chip U2, base chip U2 more accurately identifies noise signal when enabling, so as to enable the invention to more accurately
Control turntable.Electric capacity C4 plays coupling, and its capacitance is 10 μ F；Resistance R15 and resistance R16 resistance are 50K Ω, are put
Big device P2 model OP364.
The fuse FU, diode rectifier U1, resistance R1, electric capacity C1 and voltage-regulator diode D1 are collectively forming power supply electricity
Road.The input of 220V civil powers is filtered after coming in by diode rectifier U1 rectifications, electric capacity C1, voltage-regulator diode D1 voltage stabilizings, resistance R1
The direct current of 6V smooth-goings is obtained after partial pressure.Fuse FU breakdown voltage is 250V, and diode rectifier U1 is then by 4
1N4001 diodes bridge joint forms, and electric capacity C1 capacitance is 100 μ F, voltage-regulator diode D1 model 2CW60, resistance R1 resistance
It is worth for 1M Ω.
Triode VT1, triode VT2, resistance R2, resistance R3, resistance R4 and resistance R5 then form a constant-current source electricity
Road；Resistance R4 and resistance R5 is triode VT1 base biasing resistor；It can be produced at resistance R2 both ends when electric current raises
Voltage drop, now triode VT2 conductings, triode VT2 collector current flow through resistance R5, so that the base to triode VT1
Electrode current forms shunting, reduces triode VT1 base current, its collector current also reduces therewith, so that electric current is more
It is stable, improve the stability of the present invention.Triode VT1 model KTA1046, triode VT2 model
2SA933AS, resistance R2 resistance are that 1K Ω, resistance R3 and resistance R4 resistance are 10K Ω, and resistance R5 resistance is 100K
Ω。
Triode VT3, diode VT4, relay K, diode D2, diode D3, resistance R6 and resistance R7 are then formed
On-off circuit；The on-off circuit according to when the signal conduction that exports of base chip U2 or cut-off, then start turntable during conducting, end
Shi Ze stops the rotation table, on the power line for the motor that relay K normally opened contact is then arranged on turntable, works as relay
Motor obtains electric work when K obtains electric its normally opened contact closure, and when its normally opened contact disconnection of relay K dead electricity, motor stops
Only work.Triode VT3 and triode VT4 model are 3DG12C, and resistance R6 resistance is 10K Ω, resistance R7 resistance
It is 1N4001 type diodes to be worth for 1K Ω, diode D2 and diode D3, relay K model YL211137.
This when base chip U2 be NE555 integrated chips, resistance R8 and resistance R9 resistance is 10K Ω, resistance R10 resistance
The resistance being worth for 15K Ω, resistance R11 and resistance R12 is that 5K Ω, diode D4 and diode D5 model are 1N4001,
Electric capacity C2 capacitance is then 0.01 μ F, and touch sheet M1 and touch sheet M2 are copper foil.
As shown in Fig. 2 fixed amplitude circuit is connected including amplifier P101, P pole with amplifier P101 positive pole, N poles are with putting
Voltage-regulator diode D102, the N pole that big device P101 output end is connected with when base chip U2 OUT pins be connected, P poles ground connection
Voltage-regulator diode D101, the resistance R101 being serially connected between voltage-regulator diode D101 N poles and amplifier P101 positive pole, just
Pole is connected with amplifier P101 negative pole, the electric capacity C101 of negative pole ground connection, the resistance R102 being in parallel with electric capacity C101, positive pole
It is connected after resistance R103 with amplifier P101 negative pole, negative pole is connected after resistance R7 with triode VT4 base stage
Electric capacity C102, the resistance R104 being serially connected between electric capacity C102 negative pole and amplifier P101 output end.
When base chip U2 output trigger signal amplifier P101 be input to after resistance R101 be amplified processing, herein
During, voltage-regulator diode D101 and voltage-regulator diode D102 make the amplitude of trigger signal more stable；Resistance R102 and electric capacity
C101 forms a wave filter, and it is filtered processing to interference signal.Trigger signal is more steady after fixed amplitude circuit is handled
It is fixed, avoid soft-touch control from malfunctioning.Wherein, amplifier P101 model OP07, voltage-regulator diode D101 and voltage stabilizing two
The resistance that pole pipe D102 model is 2CW60, resistance R101 and resistance R104 is 5K Ω's, resistance R102 and resistance R103
Resistance is that 15K Ω, electric capacity C101 and electric capacity C102 capacitance are 0.01 μ F.
After the present invention is powered, as human body touch touch sheet M1, the noise signal of human body sensing is input to amplifier P1, by
Base chip U2 TRI pins when amplifier P1 is input to after being amplified after resistance R11, when base chip U2 set, its OUT pipe
Pin exports high level, and signal turns on triode VT2 and triode VT1 after fixed amplitude circuit is handled, and relay K obtains that electric its is normally opened
Contact closure, motor obtain electric work, drive turntable to rotate.As human body touch touch sheet M2, the clutter of human body sensing
Signal is input to amplifier P2, base chip U2 THRE pins when being input to after being amplified by amplifier P2 through resistance R12, from
And make circuit reset, its OUT pin output low level, now triode VT4 and triode VT3 cut-off, relay K must not electricity its
Normally opened contact remains open, and motor dead electricity is stopped, and turntable stops operating.
As described above, the present invention can be realized well.
Claims (4)
- A kind of 1. low interference soft-touch control of constant current, it is characterised in that mainly by when base chip U2, triode VT1, triode VT2, Triode VT3, triode VT4, diode rectifier U1, touch sheet M1, touch sheet M2, fuse FU, fixed amplitude circuit, with touch The first amplifying circuit that piece M1 is connected, the second amplifying circuit being connected with touch sheet M2, be serially connected in the first amplifying circuit and When base chip U2 TRI pins between resistance R11, be serially connected between the second amplifying circuit and Shi Ji chips U2 THRE pins Resistance R12, P pole with when base chip U2 TRI pins be connected, N poles with when base chip U2 two poles that are connected of RE pins Pipe D4, be serially connected in diode D4 N poles and when base chip U2 VCC pins between resistance R10, N pole with when base chip U2 THRE pins are connected, P poles with when base chip U2 the diode D5 that is connected of GND pins, positive pole with when base chip U2 The electric capacity C2 that CONT pins are connected, negative pole is connected with diode D5 P poles, when being serially connected in base chip U2 DIS pins and Resistance R8 between GND pins, one end with when base chip U2 GND pins be connected, the resistance R9 of other end ground connection, be serially connected in Resistance R7, P pole between triode VT2 base stage and fixed amplitude circuit is connected with triode VT4 colelctor electrode, N poles and when base The diode D3 that chip U2 RE pins are connected, the electricity being serially connected between diode D3 N poles and triode VT3 colelctor electrode Hinder R6, the diode D2 that N poles are connected with triode VT3 emitter stage, P poles are connected with electric capacity C2 negative pole, with diode The relay K that D2 is in parallel, the resistance R4 being serially connected between triode VT1 base stage and triode VT2 colelctor electrode, is serially connected in Resistance R5 between triode VT2 colelctor electrode and diode D2 P poles, it is serially connected in triode VT1 emitter stage and triode Resistance R3 between VT2 base stage, the resistance R2 being serially connected between triode VT1 emitter stage and triode VT2 emitter stage, Resistance R1, the N pole and diode being serially connected between diode rectifier U1 cathode output end and triode VT2 emitter stage are whole Stream device U1 cathode output end is connected, the voltage-regulator diode D1 that P poles are connected with diode D2 P poles, and positive pole with surely The electric capacity C1 compositions that pressure diode D1 N poles are connected, negative pole is connected with voltage-regulator diode D1 P poles；The diode is whole A stream device U1 input pole is collectively forming power input after fuse FU with its another input pole；The diode is whole Stream device U1 cathode output end is connected with electric capacity C1 negative pole；The base stage of the triode VT3 and triode VT4 emitter stage It is connected；The colelctor electrode of the triode VT1 is connected with diode D3 N poles；The fixed amplitude circuit also with when base chip U2 OUT pins be connected；The fixed amplitude circuit is connected including amplifier P101, P pole with amplifier P101 positive pole, N poles are with amplifier P101's Voltage-regulator diode D102, the N pole that output end is connected with when base chip U2 OUT pins be connected, the pole of voltage stabilizing two of P poles ground connection Pipe D101, the resistance R101 being serially connected between voltage-regulator diode D101 N poles and amplifier P101 positive pole, positive pole and amplifier P101 negative pole is connected, the electric capacity C101 of negative pole ground connection, and the resistance R102 being in parallel with electric capacity C101, positive pole is through resistance R103 It is connected afterwards with amplifier P101 negative pole, the electric capacity C102 that negative pole is connected after resistance R7 with triode VT4 base stage, goes here and there The resistance R104 being connected between electric capacity C102 negative pole and amplifier P101 output end.
- A kind of 2. low interference soft-touch control of constant current according to claim 1, it is characterised in that first amplifying circuit by Amplifier P1, the resistance R13 being serially connected between amplifier P1 negative pole and output end, positive pole are connected with amplifier P1 negative pole Connect, the electric capacity C3 of negative pole ground connection, and one end is connected with amplifier P1 positive pole, the other end is connected with electric capacity C3 negative pole Resistance R14 composition；The output end of the amplifier P1 after resistance R11 with when base chip U2 TRI pins be connected, its just Pole is then connected with touch sheet M1.
- A kind of 3. low interference soft-touch control of constant current according to claim 2, it is characterised in that second amplifying circuit by Amplifier P2, the resistance R15 being serially connected between amplifier P2 negative pole and output end, positive pole are connected with amplifier P2 negative pole Connect, the electric capacity C4 of negative pole ground connection, and one end is connected with amplifier P2 positive pole, the other end is connected with electric capacity C4 negative pole Resistance R16 composition；The output end of the amplifier P2 after resistance R12 with when base chip U2 THRE pins be connected, its Positive pole is then connected with touch sheet M2.
- 4. the low interference soft-touch control of a kind of constant current according to claim 3, it is characterised in that base chip U2 is when described NE555 integrated chips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711058026.1A CN107733417A (en) | 2017-11-01 | 2017-11-01 | A kind of low interference soft-touch control of constant current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711058026.1A CN107733417A (en) | 2017-11-01 | 2017-11-01 | A kind of low interference soft-touch control of constant current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107733417A true CN107733417A (en) | 2018-02-23 |
Family
ID=61221328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711058026.1A Pending CN107733417A (en) | 2017-11-01 | 2017-11-01 | A kind of low interference soft-touch control of constant current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107733417A (en) |
-
2017
- 2017-11-01 CN CN201711058026.1A patent/CN107733417A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209329672U (en) | A kind of current protecting circuit for high-pressure system | |
| CN107733406A (en) | A kind of signal fixed ampllitude bistable state triggering soft-touch control based on constant-current source | |
| CN107733417A (en) | A kind of low interference soft-touch control of constant current | |
| CN107659298A (en) | A kind of soft-touch control based on fixed amplitude circuit | |
| CN107707240A (en) | A kind of soft-touch control for preventing malfunction | |
| CN107733419A (en) | Constant current soft-touch control based on the processing of signal fixed ampllitude | |
| CN107707241A (en) | A kind of low interference soft-touch control | |
| CN104953866A (en) | Combined protective multiplexed output voltage-stabilized power source based on logic protection amplifying circuit | |
| CN107703783A (en) | A kind of signal fixed ampllitude one-touch piece soft-touch control of constant current-supplying | |
| CN206712767U (en) | A kind of electric automatic control switch | |
| CN103812480B (en) | A kind of IGBT drive devices | |
| CN106452414A (en) | Bistable state touch switch | |
| CN206349807U (en) | A kind of new A C/DC automatic switching control circuits | |
| CN107659299A (en) | One-touch piece soft-touch control based on the processing of signal fixed ampllitude | |
| CN107707239A (en) | A kind of low interference bistable state triggering soft-touch control based on fixed amplitude circuit | |
| CN201846052U (en) | Device for eliminating silicon controlled effect of integrated circuit | |
| CN204925231U (en) | Zero cross detection circuit | |
| CN206506453U (en) | A kind of active rectification control circuit and power-supply device | |
| CN107733418A (en) | A kind of bistable state triggering soft-touch control based on fixed amplitude circuit | |
| CN205049917U (en) | Five tunnel automatic controllers that sweep | |
| CN204597833U (en) | A kind of motor speed control circuit | |
| CN203949962U (en) | The low-cost inverter type welder detecting device for output current of a kind of isolated form | |
| CN206195334U (en) | Protection circuit suitable for electron parking system motor | |
| CN206096209U (en) | Transformer directly hinders measures automatic rapid discharging circuit | |
| CN107655580A (en) | A kind of buffer protection monitoring-temperature alarm system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180223 |