CN205566256U - Alternating load isolation control circuit - Google Patents
Alternating load isolation control circuit Download PDFInfo
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- CN205566256U CN205566256U CN201620329003.4U CN201620329003U CN205566256U CN 205566256 U CN205566256 U CN 205566256U CN 201620329003 U CN201620329003 U CN 201620329003U CN 205566256 U CN205566256 U CN 205566256U
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Abstract
The utility model discloses an alternating load isolation control circuit, restrain diode D9, bidirectional thyristor Q1 and triode V1 including chip IC1, transient voltage, signal input part IN is connected to chip IC1's pin 1, chip IC1's 2 ground connection of pin, and triode V1's collecting electrode, triode V3's collecting electrode, diode D6's positive pole, diode D8's negative pole and resistance R4 are connected to chip IC1's pin 3. The utility model discloses alternating load isolation control circuit simple structure, components and parts are few, adopt optical coupler to carry out the electric isolation between control signal and the alternating load to realize the purpose of relay, and effectively avoided the load to be punctured the probability that damages by high back pressure, consequently have long service life, safe and reliable's advantage.
Description
Technical field
This utility model relates to a kind of control circuit, specifically a kind of AC load isolation control circuit.
Background technology
Relay is a kind of electric control device, is when the change of input quantity (energizing quantity) reaches regulation requirement, makes controlled volume that a kind of electrical equipment of predetermined Spline smoothing occurs in electric output circuit.It has control system (also known as input circuit) and by the interactive relationship between control system (also known as output loop).Being commonly used in the control circuit of automatization, it actually goes to control the one " switch automatically " of big electric current running with small area analysis.Therefore play in circuit be automatically adjusted, safeguard protection, the effect such as change-over circuit.But relay plays coil in use and easily produces reverse induction voltage, thus burns circuit, therefore needs to be improved.
Utility model content
The purpose of this utility model is to provide a kind of AC load isolation control circuit, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the following technical scheme of this utility model offer:
nullA kind of AC load isolation control circuit，Including chip IC 1、Transient voltage suppressor diode D9、Bidirectional thyristor Q1 and audion V1，The pin 1 of described chip IC 1 connects signal input part IN，Pin 2 ground connection of chip IC 1，The colelctor electrode of the pin 3 connecting triode V1 of chip IC 1、The colelctor electrode of audion V3、The anode of diode D6、The negative electrode of diode D8 and resistance R4，The base stage of audion V1 connects the pin 4 of chip IC 1，The colelctor electrode of the emitter stage connecting triode V2 of audion V1、The anode of diode D5、The anode of diode D7 and resistance R4，The negative electrode of diode D5 connects negative electrode and the resistance R2 of diode D6，The other end of resistance R2 connects the anode of diode D1、The negative electrode of diode D2 and resistance R3，The other end of resistance R3 connects a main electrode of load A and bidirectional thyristor Q1，The negative electrode of diode D1 connects resistance R1、The negative electrode of diode D3 and transient voltage suppressor diode D9，The other end of transient voltage suppressor diode D9 connects the anode of diode D2、The other end of resistance R1 and the anode of diode D4，The base stage of the anode connecting triode V2 of diode D3，The base stage of the negative electrode connecting triode V3 of diode D4，The emitter stage of the emitter stage connecting triode V3 of audion V2、The other end of resistance R5、Another main electrode of bidirectional thyristor Q1 and 220V alternating current，The negative electrode of diode D7 connects the anode of diode D8、The other end of resistance R5 and the control pole of bidirectional thyristor Q1，The other end of load A connects the other end of 220V alternating current.
As preferred version of the present utility model: described chip IC 1 is 4N25 photo-coupler.
Compared with prior art, the beneficial effects of the utility model are: this utility model AC load isolation control circuit simple in construction, components and parts are few, use the electrical isolation that photo-coupler is controlled between signal and AC load, thus realize the purpose of relay, and effectively prevent and load by the probability of high back-pressure punch through damage, therefore there is length in service life, safe and reliable advantage.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of AC load isolation control circuit.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
nullRefer to Fig. 1，A kind of AC load isolation control circuit，Including chip IC 1、Transient voltage suppressor diode D9、Bidirectional thyristor Q1 and audion V1，The pin 1 of described chip IC 1 connects signal input part IN，Pin 2 ground connection of chip IC 1，The colelctor electrode of the pin 3 connecting triode V1 of chip IC 1、The colelctor electrode of audion V3、The anode of diode D6、The negative electrode of diode D8 and resistance R4，The base stage of audion V1 connects the pin 4 of chip IC 1，The colelctor electrode of the emitter stage connecting triode V2 of audion V1、The anode of diode D5、The anode of diode D7 and resistance R4，The negative electrode of diode D5 connects negative electrode and the resistance R2 of diode D6，The other end of resistance R2 connects the anode of diode D1、The negative electrode of diode D2 and resistance R3，The other end of resistance R3 connects a main electrode of load A and bidirectional thyristor Q1，The negative electrode of diode D1 connects resistance R1、The negative electrode of diode D3 and transient voltage suppressor diode D9，The other end of transient voltage suppressor diode D9 connects the anode of diode D2、The other end of resistance R1 and the anode of diode D4，The base stage of the anode connecting triode V2 of diode D3，The base stage of the negative electrode connecting triode V3 of diode D4，The emitter stage of the emitter stage connecting triode V3 of audion V2、The other end of resistance R5、Another main electrode of bidirectional thyristor Q1 and 220V alternating current，The negative electrode of diode D7 connects the anode of diode D8、The other end of resistance R5 and the control pole of bidirectional thyristor Q1，The other end of load A connects the other end of 220V alternating current.
Chip IC 1 is 4N25 photo-coupler.
Operation principle of the present utility model is: 220V power supply, through load A, R3, D1～D4, D9, provides biasing for V2, V3 in positive-negative half-cycle in turn；There is provided power supply through R3, D5～D8 for photoelectrical coupler IC1 simultaneously.When there being triggering signal IN to enter circuit, the LEDs ON within photoelectrical coupler IC1 so that the phototriode within chip IC 1 turns in the positive half cycle of civil power, then produce pressure drop at R5 two ends, trigger Q1 conducting, load A obtains electric work.The most same relay of the function of whole circuit, but reverse induction voltage will not be produced, in circuit, the power supply of photoelectrical coupler is taken from one end of Q1 and is the most directly taken from mains supply, thus effectively prevent and load by the possibility of high back-pressure punch through damage.C1, R6 are pulse absorbing element, and R3 plays metering function.During for avoiding A to be inductive load, 90 ° of phase contrasts that the voltage of bidirectional thyristor Q1 produces with photoelectrical coupler power supply, increase the stability of circuit.
Claims (2)
- null1. an AC load isolation control circuit，Including chip IC 1、Transient voltage suppressor diode D9、Bidirectional thyristor Q1 and audion V1，It is characterized in that，The pin 1 of described chip IC 1 connects signal input part IN，Pin 2 ground connection of chip IC 1，The colelctor electrode of the pin 3 connecting triode V1 of chip IC 1、The colelctor electrode of audion V3、The anode of diode D6、The negative electrode of diode D8 and resistance R4，The base stage of audion V1 connects the pin 4 of chip IC 1，The colelctor electrode of the emitter stage connecting triode V2 of audion V1、The anode of diode D5、The anode of diode D7 and resistance R4，The negative electrode of diode D5 connects negative electrode and the resistance R2 of diode D6，The other end of resistance R2 connects the anode of diode D1、The negative electrode of diode D2 and resistance R3，The other end of resistance R3 connects a main electrode of load A and bidirectional thyristor Q1，The negative electrode of diode D1 connects resistance R1、The negative electrode of diode D3 and transient voltage suppressor diode D9，The other end of transient voltage suppressor diode D9 connects the anode of diode D2、The other end of resistance R1 and the anode of diode D4，The base stage of the anode connecting triode V2 of diode D3，The base stage of the negative electrode connecting triode V3 of diode D4，The emitter stage of the emitter stage connecting triode V3 of audion V2、The other end of resistance R5、Another main electrode of bidirectional thyristor Q1 and 220V alternating current，The negative electrode of diode D7 connects the anode of diode D8、The other end of resistance R5 and the control pole of bidirectional thyristor Q1，The other end of load A connects the other end of 220V alternating current.
- A kind of AC load isolation control circuit the most according to claim 1, it is characterised in that described chip IC 1 is 4N25 photo-coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620329003.4U CN205566256U (en) | 2016-04-18 | 2016-04-18 | Alternating load isolation control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620329003.4U CN205566256U (en) | 2016-04-18 | 2016-04-18 | Alternating load isolation control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205566256U true CN205566256U (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620329003.4U Expired - Fee Related CN205566256U (en) | 2016-04-18 | 2016-04-18 | Alternating load isolation control circuit |
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| CN (1) | CN205566256U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672431A (en) * | 2018-11-29 | 2019-04-23 | 杭州电子科技大学 | One kind having earth leakage protective 3 phase AC solid relay circuit |
-
2016
- 2016-04-18 CN CN201620329003.4U patent/CN205566256U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672431A (en) * | 2018-11-29 | 2019-04-23 | 杭州电子科技大学 | One kind having earth leakage protective 3 phase AC solid relay circuit |
| CN109672431B (en) * | 2018-11-29 | 2022-11-15 | 杭州电子科技大学 | Three-phase alternating current solid-state relay circuit with leakage protection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yang Yigen Inventor before: Li Jun |
|
| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170116 Address after: 528308 Guangdong Province, Foshan city Shunde District Lunjiao nepheline new Xi four northbound No. 2 B block four Patentee after: Foshan City Han Chi Electronics Co. Ltd. Address before: 315700 Ningbo, Xiangshan Province Economic Development Zone, Park Road, No. 98 Patentee before: Xiangshan Al Wouter Intelligent Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 Termination date: 20190418 |