CN204652329U - A kind of anti-parallel thyristor trigger equipment - Google Patents
A kind of anti-parallel thyristor trigger equipment Download PDFInfo
- Publication number
- CN204652329U CN204652329U CN201520506962.4U CN201520506962U CN204652329U CN 204652329 U CN204652329 U CN 204652329U CN 201520506962 U CN201520506962 U CN 201520506962U CN 204652329 U CN204652329 U CN 204652329U
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- China
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- thyristor
- resistance
- parallel
- control pole
- trigger equipment
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- Expired - Fee Related
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Abstract
A kind of anti-parallel thyristor trigger equipment, be made up of the resistance, electric capacity, piezo-resistance and the thermistor be connected between two loops, thyristor control pole that are connected in parallel between unidirectional thyristor control pole and negative electrode, the switch controlling the high-power thyristor being used as AC contact-less switch is also connected between two loops, thyristor control pole.The advantage of this interface circuit is that circuit is simple and reliable, when interface circuit socket or line loose contact, can not damage components and parts.
Description
Technical field
The utility model belongs to the unidirectional thyristor circuits for triggering in AC contactless electronic switching device, belongs to technical field of electronic control.
Background technology
The high-power thyristor and the corresponding circuits for triggering that are used as high power AC noncontacting switch are not at present generally closely integrated, but be connected by wire, in some circuit design, in order to the convenience of scheduling and planning and maintenance, connector between high-power thyristor with control board, is used to be connected.Circuits for triggering have two kinds usually: a kind of is the circuit using Trigger transformers, and major defect is that circuit is complicated, and needs additional supply; Another kind uses a resistance at the thyristor control interpolar of two reverse parallel connections; automatic triggering turn on thyristors; also to have and use additional resistance and piezo-resistance protection thyristor on this basis; its advantage is that circuit is simple; shortcoming is poor anti jamming capability, and easily causes the component damage of being correlated with when the control wire contacts of interface circuit is bad.
Summary of the invention
The purpose of this utility model be to provide a kind of be simple and easy to, have self-shield, self-recoverage, antijamming capability by force, a kind of anti-parallel thyristor trigger equipment of not fragile relevant components and parts.
The utility model is achieved in that a kind of anti-parallel thyristor trigger equipment, be made up of the resistance, electric capacity, piezo-resistance and the thermistor be connected between two loops, thyristor control pole that are connected in parallel between unidirectional thyristor control pole and negative electrode, the switch controlling the high-power thyristor being used as AC contact-less switch is also connected between two loops, thyristor control pole.It is characterized in that:
The resistance be connected between two loops, thyristor control pole is PTC self-recoverage type thermistor;
The piezo-resistance be connected in parallel between thyristor control pole and negative electrode is the piezo-resistance that puncture voltage is lower.
Advantage of the present utility model and effect:
(1) circuit is simple and reliable;
(2), when interface circuit socket or line loose contact, components and parts can not be damaged;
(3) RC anti-jamming circuit improves the proof voltage climbing speed (dV/dt) of thyristor, thus avoids thyristor false triggering conducting.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Accompanying drawing is circuit theory diagrams of the present utility model.
Embodiment
Referring to accompanying drawing 1; the control switch of A1, B1 point-to-point transmission incoming transport high-power contactless switch; R1 is PTC self-recoverage type thermistor; there is the double action of protective circuit element and restriction trigger current; when circuits for triggering and the loose contact of thyristor control pole; R1 is high-impedance state, can avoid component damage.
C1, R2, C2, R5 are the anti-interference elements of RC, unidirectional V1, V2 thyristor can be made to bear higher dV/dt, avoid unidirectional thyristor false triggering conducting.R3, R6 are the protection component that unidirectional thyristor V1, V2 control pole respectively, also protect resistance R2, R5 and electric capacity C1, C2 simultaneously.
Inverse parallel unidirectional thyristor V1, V2 between C and D form AC contact-less switch, and J1 ~ J4 is the interface card of trigger equipment and noncontacting switch.The circuit of this device is simple and reliable, when interface circuit socket or line loose contact, can not damage components and parts.
Claims (3)
1. an anti-parallel thyristor trigger equipment, is made up of resistance, electric capacity, piezo-resistance and the thermistor be connected between two loops, thyristor control pole be connected in parallel between unidirectional thyristor control pole and negative electrode.
2. a kind of anti-parallel thyristor trigger equipment according to claim 1, is characterized in that, the resistance be connected between two loops, thyristor control pole is PTC self-recoverage type thermistor.
3. a kind of anti-parallel thyristor trigger equipment according to claim 1, is characterized in that, the piezo-resistance be connected in parallel between thyristor control pole and negative electrode is the piezo-resistance that puncture voltage is lower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520506962.4U CN204652329U (en) | 2015-07-14 | 2015-07-14 | A kind of anti-parallel thyristor trigger equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520506962.4U CN204652329U (en) | 2015-07-14 | 2015-07-14 | A kind of anti-parallel thyristor trigger equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204652329U true CN204652329U (en) | 2015-09-16 |
Family
ID=54105036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520506962.4U Expired - Fee Related CN204652329U (en) | 2015-07-14 | 2015-07-14 | A kind of anti-parallel thyristor trigger equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204652329U (en) |
-
2015
- 2015-07-14 CN CN201520506962.4U patent/CN204652329U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20150916 Termination date: 20160714 |