CN206686152U - A kind of contactless electronic power switching circuit - Google Patents
A kind of contactless electronic power switching circuit Download PDFInfo
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- CN206686152U CN206686152U CN201720475746.7U CN201720475746U CN206686152U CN 206686152 U CN206686152 U CN 206686152U CN 201720475746 U CN201720475746 U CN 201720475746U CN 206686152 U CN206686152 U CN 206686152U
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- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims 1
- 230000010349 pulsation Effects 0.000 abstract description 4
- 238000002955 isolation Methods 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
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Abstract
The utility model discloses a kind of contactless electronic power switching circuit, including input control signal end and forceful electric power output end, input between control signal end and forceful electric power output end by photoelectric coupler isolation；Input control signal end includes constant-current circuit, and control voltage is loaded on the series circuit being made up of luminescent device and 3rd resistor by constant-current circuit；Forceful electric power output end includes output end power, diode and power tube, the anode of power tube is connected the both ends of output end power with negative electrode respectively, one end of the anode of output end power and power tube connection connects the control pole of power tube by diode, light-sensitive device and the 5th resistance, and the control pole of power tube connects one end of the negative electrode connection of output end power and power tube by the 6th resistance.Contactless electronic power switching circuit of the present utility model can be used not only for alternation and can control circuit, and the DC control circuit in pulsation can be used to be controlled as switch, and its anti surge voltage and current capacity greatly improve.
Description
Technical field
Circuit field is the utility model is related to, more particularly to a kind of electronic power switch.
Background technology
Contactless electronic power switch application function is single in the market, otherwise it only can be used in DC control electricity
Road, or or only can be used in ac circuit, existing exchange can not be realized and can have the control circuit of flip-flop.
Electronic switch in the market uses is very easy to damage in the circuit that existing exchange has direct current again.Particularly
Using in the pulsating direct current circuit with ripple, the electronic DC switch made using FET or IGBT pipes etc. is damaged
Rate is very high, and the even upper electricity of some damages.On the one hand the main reason for causing damage is due to that power output pipe does not apply to
On the other hand it is that can not withstand greater than the reverse surge voltage of rated voltage and damage in the DC circuit with ripple.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the utility model offer one kind is contactless, is suitable for
The complex working condition of surge voltage and electric current, life-span high contactless electronic power switching circuit be present.
Technical scheme：To achieve the above object, contactless electronic power switching circuit of the present utility model includes input control
Signal end and forceful electric power output end processed, it is described input control signal end and the forceful electric power output end between by photoelectrical coupler every
From the input control signal end connects the luminescent device of the photoelectrical coupler, and the forceful electric power output end connects the photoelectricity
The light-sensitive device of coupler；The input control signal end includes constant-current circuit, and control voltage is loaded by the constant-current circuit
Onto the series circuit being made up of the luminescent device and 3rd resistor；The forceful electric power output end includes output end power, two poles
Pipe and power tube, the anode of the power tube are connected the both ends of the output end power, output end power and work(with negative electrode respectively
One end of the anode connection of rate pipe connects the control pole of the power tube by diode, light-sensitive device and the 5th resistance, together
When power tube control pole pass through the 6th resistance and connect one end that the negative electrode of the output end power and power tube connects.
Further, the photoelectrical coupler has two, and two light emitting devices in series of two photoelectrical couplers are together；
The light-sensitive device of two photoelectrical couplers is cascaded.
Further, the input control signal end also includes LED, the LED and second resistance group
Into series circuit it is in parallel with the series circuit that 3rd resistor forms with by the luminescent device.
Further, the light-sensitive device includes two photodiodes parallel with one another, and two photosensitive two levels
The conducting direction of pipe is opposite.
Further, the output end power can be dc source or AC power or DC-AC AC-battery power source；
When the output end power has flip-flop, the anode of the anode of the power tube and the diode is all connected with output end
The positive pole of flip-flop in power supply.
Further, the constant-current circuit includes the first triode, the second triode, first resistor and the 4th resistance；
The colelctor electrode of second triode connects the base stage of first triode, and its colelctor electrode passes through the first resistor simultaneously
Connect the positive pole of control voltage；The 4th resistance, and the second triode are connected between the base stage and emitter stage of second triode
Base stage connect the emitter stage of the first triode, the emitter stage of the second triode connects the negative pole of control voltage simultaneously；By described
The one end for the series circuit that luminescent device forms with 3rd resistor is connected the positive pole of control voltage, other end connection the described 1st
The colelctor electrode of pole pipe.
Beneficial effect：Contactless electronic power switching circuit of the present utility model can be used not only for alternation and can control
Circuit, and the DC control circuit in pulsation can be used to be controlled as switch, its anti surge voltage and current capacity are significantly
Improve.Using scheme of the present utility model, no matter the much on-state voltage drops that can be effectively ensured of operating current are fixed, so as to have
Effect ensure that power tube is exported with current-carrying stability, substantially increase switch service life.
Brief description of the drawings
Accompanying drawing 1 is the circuit diagram of contactless electronic power switching circuit；
Accompanying drawing 2 is the application circuit of contactless electronic power switch.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.
Contactless electronic power switching circuit as shown in Figure 1, including input control signal end 1 and forceful electric power output end
2, isolated between the input control signal end 1 and the forceful electric power output end 2 by photoelectrical coupler 3, isolation voltage can reach
2500VAC.The input control signal end 1 connects the luminescent device 31 of the photoelectrical coupler 3, and the forceful electric power output end 2 connects
Connect the light-sensitive device 32 of the photoelectrical coupler 3；The input control signal end 1 includes constant-current circuit 11, and control voltage passes through
The constant-current circuit 11 is loaded on the series circuit being made up of the luminescent device 31 and 3rd resistor 12；The forceful electric power output
End 2 includes output end power, diode 21 and power tube 22, the anode of the power tube 22 and is connected the output respectively with negative electrode
Hold the both ends of power supply, output end power and one end that the anode of power tube 22 is connected by diode 21, light-sensitive device 32 and
5th resistance 23 connects the control pole of the power tube 22, at the same the control pole of power tube 22 connected by the 6th resistance 24 it is described
One end that output end power is connected with the negative electrode of power tube 22.
Power tube 22 is the final output element of this circuit, and diode 21, light-sensitive device 32, the 5th resistance the 23, the 6th are electric
The circuit of the composition of resistance 24 forms the drive circuit of triggering power tube 22.Preferably, power tube 22 is IGCT.
Above-mentioned photoelectrical coupler 3 not only acts as input low-voltage weak signal and made with the high-tension isolation processing of output end
With, and be the controlling switch as conducting power pipe 22, in order to ensure reliability, the photoelectrical coupler 3 has two, two
Two luminescent devices 31 of photoelectrical coupler 3 are cascaded；The light-sensitive device 32 of two photoelectrical couplers 3 is cascaded.
The light-sensitive device 32 includes two photodiodes parallel with one another, and the conducting direction phase of two photodiodes
Instead, two-way admittance so can be achieved.
As a kind of embodiment of constant-current circuit, the constant-current circuit 11 includes the first triode 111, the second triode
112nd, the resistance 114 of first resistor 113 and the 4th；The colelctor electrode of second triode 112 connects first triode 111
Base stage, and its colelctor electrode simultaneously pass through the first resistor 113 connect control voltage positive pole；The base of second triode 112
The 4th resistance 114 is connected between pole and emitter stage, and the base stage of the second triode 112 connects the hair of the first triode 111
Emitter-base bandgap grading, the emitter stage of the second triode 112 connect the negative pole of control voltage simultaneously；By the luminescent device 31 and 3rd resistor 12
The positive pole of one end connection control voltage of the series circuit of composition, the other end connect the colelctor electrode of first triode 111.
In actual use, control voltage scope caused by control signal source is 4-32VDC, and constant-current circuit 11 is powered to photoelectrical coupler 3,
Even if realizing that control voltage is up to 32VDC, it is forever constant in allowed limits to input the electric current of control, avoids because voltage is high
And power consumption control signal source caused greatly is damaged because of overload.
The operation principle of this circuit is：When control voltage input obtains any one control voltage value signals of 4-32VDC,
The luminescent device 31 of photoelectrical coupler 3 obtains voltage, and the light-sensitive device 32 of photoelectrical coupler 3 completes two-way admittance work, power
The control pole of pipe 22 obtains unidirectional trigger current power tube 22 by diode 21, light-sensitive device 32, the 5th resistance 23
ON operation.
The input control signal end 1 also includes LED 13, and the LED 13 forms with second resistance 14
Series circuit it is in parallel with the series circuit that 3rd resistor 12 forms with by the luminescent device 31.LED 13 plays letter
The effect of number open instruction lamp, when there is control voltage generation, prompting that LED 13 lights to operator intuitively.
The output end power can be dc source or AC power or DC-AC AC-battery power source；When described defeated
When going out to hold power supply has flip-flop, the anode of the anode of the power tube and the diode is all connected with output end power directly
Flow the positive pole of composition.
As an application example of contactless electronic power switching circuit of the present utility model, electricity as shown in Figure 2
Road is to obtaining pulsating dc voltage after three phase half wave rectification, then returns phase line by this switch control load.If this
Circuit uses generally conventional electronic DC switch, due on the particularity electronic switch of circuit existing direct current have again it is very high
Alternating voltage, therefore damage electronic switch is very easy at work, some is even damaged once the i.e. electronic switch that works on power,
Very big puzzlement is brought in the reliability application of circuit to circuit designers, and new departure of this exploitation effectively solves this
Technical problem, work that can be continual and steady using embodiment newly developed.
Contactless electronic power switching circuit of the present utility model can be used not only for alternation and can control circuit, and
The DC control circuit in pulsation can be used to be controlled as switch, its anti surge voltage and current capacity greatly improve.Pulsation
DC circuit typically be easy to damage using FET or IGBT pipes etc. as power output pipe, the even upper electricity of some circuits
Damage.D.C. high-current is all to be managed using IGBT pipes as power output pipe, IGBT at work with electric current at present
Increasing on-state voltage drop also can and then increase, and the heating power consumption that pressure drop increase is brought, which becomes big, causes power output pipe output effectively band to carry
Electric current reduces.And using this programme, no matter the much on-state voltage drops that can be effectively ensured of operating current are fixed, so as to effective
It ensure that power tube output with current-carrying stability, substantially increases switch service life.
Described above is only preferred embodiment of the present utility model, it should be pointed out that：For the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (6)
- A kind of 1. contactless electronic power switching circuit, it is characterised in that：Including input control signal end (1) and forceful electric power output Hold (2), isolated between the input control signal end (1) and the forceful electric power output end (2) by photoelectrical coupler (3), it is described The luminescent device (31) that control signal end (1) connects the photoelectrical coupler (3) is inputted, the forceful electric power output end (2) connects institute State the light-sensitive device (32) of photoelectrical coupler (3)；The input control signal end (1) includes constant-current circuit (11), control voltage It is loaded into by the constant-current circuit (11) on the series circuit being made up of the luminescent device (31) and 3rd resistor (12)；Institute Stating forceful electric power output end (2) includes output end power, diode (21) and power tube (22), anode and the moon of the power tube (22) Pole connects the both ends of the output end power respectively, and one end that output end power is connected with the anode of power tube (22) passes through two poles Manage the control pole of (21), light-sensitive device (32) and the 5th resistance (23) the connection power tube (22), while power tube (22) Control pole one end that the output end power is connected with the negative electrode of power tube (22) is connected by the 6th resistance (24).
- A kind of 2. contactless electronic power switching circuit according to claim 1, it is characterised in that：The photoelectrical coupler (3) there are two, two luminescent devices (31) of two photoelectrical couplers (3) are cascaded；The light of two photoelectrical couplers (3) Sensing device (32) is cascaded.
- A kind of 3. contactless electronic power switching circuit according to claim 1, it is characterised in that：The input control letter Number end (1) also includes LED (13), the series circuit of the LED (13) and second resistance (14) composition and by The luminescent device (31) is in parallel with the series circuit that 3rd resistor (12) forms.
- A kind of 4. contactless electronic power switching circuit according to claim 1, it is characterised in that：The light-sensitive device (32) two photodiodes parallel with one another are included, and the conducting direction of two photodiodes is opposite.
- A kind of 5. contactless electronic power switching circuit according to claim 4, it is characterised in that：The output end power Can be dc source or AC power or DC-AC AC-battery power source；When the output end power has flip-flop, The anode of the power tube (22) is all connected with the positive pole of flip-flop in output end power with the anode of the diode (21).
- A kind of 6. contactless electronic power switching circuit according to claim 1, it is characterised in that：The constant-current circuit (11) the first triode (111), the second triode (112), first resistor (113) and the 4th resistance (114) are included；Described The colelctor electrode of two triodes (112) connects the base stage of first triode (111), and its colelctor electrode passes through described first simultaneously Resistance (113) connects the positive pole of control voltage；The 4th resistance is connected between the base stage and emitter stage of second triode (112) (114), and the second triode (112) base stage connect the first triode (111) emitter stage, the hair of the second triode (112) Emitter-base bandgap grading connects the negative pole of control voltage simultaneously；The one of the series circuit being made up of the luminescent device (31) and 3rd resistor (12) The positive pole of end connection control voltage, the other end connect the colelctor electrode of first triode (111).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720475746.7U CN206686152U (en) | 2017-05-02 | 2017-05-02 | A kind of contactless electronic power switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720475746.7U CN206686152U (en) | 2017-05-02 | 2017-05-02 | A kind of contactless electronic power switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206686152U true CN206686152U (en) | 2017-11-28 |
Family
ID=60407230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720475746.7U Active CN206686152U (en) | 2017-05-02 | 2017-05-02 | A kind of contactless electronic power switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206686152U (en) |
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2017
- 2017-05-02 CN CN201720475746.7U patent/CN206686152U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180905 Address after: 523000 four floor, G building, Lian Xing Zhi Zhi Industrial Park, Chuangxing Road, Gao Yong Town, Dongguan, Guangdong. Patentee after: Guangdong Motomori Energy Technology Co Ltd Address before: 214000 Jingli Dongyuan 33-501, Binhu District, Wuxi City, Wuxi, Jiangsu Patentee before: Yang Qingrong |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210127 Address after: 523000 Room 201, building 2, 21 Xianghe 1st Road, Dalang Town, Dongguan City, Guangdong Province Patentee after: Guangdong Guosong Energy Technology Co.,Ltd. Address before: 523000 four floor, G building, Lian Xing Zhi Zhi Industrial Park, Chuangxing Road, Gao Yong Town, Dongguan, Guangdong. Patentee before: GUANGDONG YUANSEN ENERGY TECHNOLOGY Co.,Ltd. |