CN207380159U - Single phase ac protects chip against work(fault pretest - Google Patents
Single phase ac protects chip against work(fault pretest Download PDFInfo
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- CN207380159U CN207380159U CN201721461336.3U CN201721461336U CN207380159U CN 207380159 U CN207380159 U CN 207380159U CN 201721461336 U CN201721461336 U CN 201721461336U CN 207380159 U CN207380159 U CN 207380159U
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Abstract
A kind of single phase ac protects chip against work(fault pretest; three full-wave rectifying circuits, a photoelectric coupling circuit and a control circuit are integrated in a chip; the input terminal of three full-wave rectifying circuits connect respectively chip the 1st, 2,3 feet; the input terminal of photoelectric coupling circuit is connected to after the output terminal parallel connection of three full-wave rectifying circuits; photoelectric coupling circuit output terminal connection control circuit, control circuit connection chip the 4th, 5,6,7,8 feet.The utility model can guarantee the progress electric fault preliminary examination in the case where load end firewire and zero curve are all without forceful electric power, securely and reliably, realize that electric fault preliminary examination protection is laid a solid foundation for intelligent protection equipment.
Description
Technical field
The utility model is related to power distribution protection technique fields, in particular to a kind of single phase ac to protect against work(fault pretest
Chip is protected, is specifically for use in the intelligent electric detection protection circuit of multifunctional ligand electric equipment.
Background technology
Electric fault preliminary examination protection is to ensure that Electrical Safety, the basic assurance of preventing electric fire, to realize electric fault
Preliminary examination it may first have to solve the problems, such as inverse work(preliminary examination, only load end firewire and zero curve all without forceful electric power in the case of, ability
Electric fault preliminary examination is carried out, therefore, research and development fault pretest chip is significant.
The content of the invention
Technical problem to be solved in the utility model is：The above-mentioned problems of the prior art is solved, and is provided a kind of
Single phase ac protects chip against work(fault pretest, can guarantee and electricity is carried out in the case where load end firewire and zero curve are all without forceful electric power
Gas fault pretest securely and reliably, realizes that its electric fault preliminary examination protection is laid a solid foundation for multifunctional intellectual controller switching equipment.
The technical solution adopted in the utility model is：
A kind of single phase ac protects chip against work(fault pretest, by three full-wave rectifying circuits, a photoelectric coupling circuit
It is integrated in a control circuit in a chip, the input terminal of three full-wave rectifying circuits connects the 1st, 2, the 3 of chip respectively
Foot, is connected to the input terminal of photoelectric coupling circuit after the output terminal parallel connection of three full-wave rectifying circuits, photoelectric coupling circuit it is defeated
Outlet connect control circuit, control circuit connection chip the 4th, 5,6,7,8 feet.
In above-mentioned technical proposal, three full-wave rectifying circuits are by diode D1To D6It forms, photoelectric coupling circuit is by sending out
Light pipe FD1With photistor V1It forms, control circuit is by resistance R3To R7, diode D7To D8, silicon-controlled T1With triode V2Structure
Into, three full-wave rectifying circuits three input terminals connect respectively chip the 1st, 2,3 feet, and the 1st of chip the, 2,3 feet difference
Firewire L ', the zero curve N ' of load end and power end zero curve N are connected, light is connected to after the output terminal parallel connection of three full-wave rectifying circuits
The input terminal photoelectric tube FD of electric coupling circuit1Positive and negative anodes, the photistor V of photoelectric coupling circuit1Output terminal is connected on control electricity
The silicon-controlled T on road1Cathode and diode D7Between anode, silicon-controlled T1Control pole is through resistance R5It is connected to the 7th foot of chip, silicon-controlled T1
Anode be connected to the 5th foot of chip and through resistance R7It is connected to triode V2Base stage, transistor collector is through diode D8With resistance R6It connects
To the 6th foot of chip, the anode V of DC supplyDDIt is connected to the 8th foot of chip, the negative terminal V of DC supplySSIt is connected to chip
4 feet.
Operation principle and advantageous effect：
When load end firewire L ' and zero curve N ' are without forceful electric power, FD1Will not electrified light emitting, photistor V1It is not turned on
In high-impedance state, no matter silicon-controlled T1Control pole and the 7th foot of chip that is connected whether have control control source, T1All will not
Conducting, the 5th foot of chip are exported as high level, triode V2Saturation conduction, the output of the 6th foot of chip are low level.
When firewire L ' or zero curve N ' any wire of load end carry forceful electric power, luminous tube FD1It will electrified light emitting, light
Quick transistor turns are in low resistive state, as long as the 7th foot of chip has 1 high level input, silicon-controlled T at this time1It will turn on, chip
5th foot can be become low level, triode V from high level2Cut-off.The 6th foot of chip can be become high level from low level, such as by chip
7th foot becomes low level, silicon-controlled T from high level1Shut-off cut-off, the output of the 5th foot of chip can be returned to high level by low level again,
6th output also can return to low level by high level.
According to above-mentioned operation principle, by controlling the 7th foot input control voltage of chip, the firewire L ' of load end just can know that
Whether with zero curve N ' with forceful electric power, while the 5th, the 6th two output pin of chip can also control protection act electric current and inverse work(event
Hinder indicating circuit, achieve the purpose that realize inverse work(fault pretest, securely and reliably, realize that its electric fault is pre- for intelligent protection equipment
Protection is laid a solid foundation.
Description of the drawings：
Fig. 1 is the utility model structure line map.
Specific embodiment：
Referring to Fig. 1, the single phase ac of the utility model protects chip against work(fault pretest, by three full-wave rectifying circuits,
One photoelectric coupling circuit and a control circuit are integrated in a chip, and the input terminal of three full-wave rectifying circuits connects respectively
Connect chip the 1st, 2,3 feet, the input terminal of photoelectric coupling circuit, light are connected to after the output terminal parallel connection of three full-wave rectifying circuits
Electric coupling circuit output terminal connection control circuit, control circuit connection chip the 4th, 5,6,7,8 feet.
Three full-wave rectifying circuits are by diode D1To D6It forms, photoelectric coupling circuit is by luminous tube FD1With photosensitive crystalline substance
Body pipe V1It forms, control circuit is by resistance R3To R7, diode D7To D8, silicon-controlled T1With triode V2It forms, three all-waves are whole
Three input terminals of current circuit connect respectively chip the 1st, 2,3 feet, and the 1st of chip the, 2,3 feet connect the fire of load end respectively
Line L ', zero curve N ' and power end zero curve N, the defeated of photoelectric coupling circuit is connected to after the output terminal parallel connection of three full-wave rectifying circuits
Enter to hold luminous tube FD1Positive and negative anodes, the photistor V of photoelectric coupling circuit1Output terminal is connected on the silicon-controlled T of control circuit1It is cloudy
Pole and diode D7Between anode, silicon-controlled T1Control pole is through resistance R5It is connected to the 7th foot of chip, silicon-controlled T1Anode be connected to core
The 5th foot of piece and through resistance R7It is connected to triode V2Base stage, triode V2Collector is through diode D8With resistance R6It is connected to chip the 6th
Foot, the anode V of DC supplyDDIt is connected to the 8th foot of chip, the negative terminal V of DC supplySSIt is connected to the 4th foot of chip.
Claims (2)
1. a kind of single phase ac protects chip against work(fault pretest, it is characterised in that：By three full-wave rectifying circuits, a photoelectricity
Termination power and a control circuit are integrated in a chip, and the input terminal of three full-wave rectifying circuits connects chip respectively
1st, 2,3 feet, the input terminal of photoelectric coupling circuit, photoelectric coupling electricity are connected to after the output terminal parallel connection of three full-wave rectifying circuits
Road output terminal connection control circuit, control circuit connection chip the 4th, 5,6,7,8 feet.
2. single phase ac according to claim 1 protects chip against work(fault pretest, it is characterised in that：Three all-waves
Rectification circuit is by diode D1To D6It forms, photoelectric coupling circuit is by luminous tube FD1With photistor V1It forms, control circuit
By resistance R3To R7, diode D7To D8, silicon-controlled T1With triode V2It forms, three input terminals point of three full-wave rectifying circuits
Not Lian Jie chip the 1st, 2,3 feet, and the 1st of chip the, 2,3 feet connect firewire L ', zero curve N ' and the power end of load end respectively
Zero curve N is connected to the input terminal luminous tube FD of photoelectric coupling circuit after the output terminal parallel connection of three full-wave rectifying circuits1It is positive and negative
Pole, the photistor V of photoelectric coupling circuit1Output terminal is connected on the silicon-controlled T of control circuit1Cathode and diode D7Anode
Between, silicon-controlled T1Control pole is through resistance R5It is connected to the 7th foot of chip, silicon-controlled T1Anode be connected to the 5th foot of chip and through resistance R7
It is connected to triode V2Base stage, triode V2Collector is through diode D8With resistance R6The 6th foot of chip is connected to, DC supply
Anode VDDIt is connected to the 8th foot of chip, the negative terminal V of DC supplySSIt is connected to the 4th foot of chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721461336.3U CN207380159U (en) | 2017-11-06 | 2017-11-06 | Single phase ac protects chip against work(fault pretest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721461336.3U CN207380159U (en) | 2017-11-06 | 2017-11-06 | Single phase ac protects chip against work(fault pretest |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207380159U true CN207380159U (en) | 2018-05-18 |
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ID=62335041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721461336.3U Active CN207380159U (en) | 2017-11-06 | 2017-11-06 | Single phase ac protects chip against work(fault pretest |
Country Status (1)
| Country | Link |
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| CN (1) | CN207380159U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108540112A (en) * | 2018-04-04 | 2018-09-14 | 沈机（上海）智能系统研发设计有限公司 | Control circuit, circuit control method and circuit system |
-
2017
- 2017-11-06 CN CN201721461336.3U patent/CN207380159U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108540112A (en) * | 2018-04-04 | 2018-09-14 | 沈机（上海）智能系统研发设计有限公司 | Control circuit, circuit control method and circuit system |
| CN108540112B (en) * | 2018-04-04 | 2021-10-22 | 沈机（上海）智能系统研发设计有限公司 | Control circuit, circuit control method and circuit system |
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