CN201533297U - Thyristor trigger circuit - Google Patents
Thyristor trigger circuit Download PDFInfo
- Publication number
- CN201533297U CN201533297U CN2009201968230U CN200920196823U CN201533297U CN 201533297 U CN201533297 U CN 201533297U CN 2009201968230 U CN2009201968230 U CN 2009201968230U CN 200920196823 U CN200920196823 U CN 200920196823U CN 201533297 U CN201533297 U CN 201533297U
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- China
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- amplifier
- analog switch
- capacitor
- photo resistance
- gating circuit
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Abstract
Disclosed is a thyristor trigger circuit which comprises a constant current source, a first analogue switch, an amplifier, a storage capacitor, a second analogue switch, a light-emitting diode and a photosensitive resistor. The constant current source is connected to the first analogue switch which is connected to an anode input end of the amplifier, an output end of the amplifier is connected to a cathode input end of the amplifier, one end of the capacitor is connected to the anode input end of the amplifier, while the other end of the capacitor is connected to a cathode of a power supply, the second analogue switch is connected in parallel with the capacitor, the output end of the amplifier is connected to the light-emitting diode which is engaged with the photosensitive resistor, and the photosensitive resistor is connected to an output end of an alternating current circuit. The thyristor trigger circuit has the advantages of simple structure, convenient debugging and lowered cost.
Description
Technical field
The utility model belongs to a kind of thyristor gating circuit.
Background technology
Existing thyristor gating circuit, the use potentiometer pressure regulation that has produces loose contact, and the circuit noise is big, poor reliability, the use single-chip microcomputer that has waits to synthesize regulation voltage or pulse, pulse transformer output, circuit structure complexity, debug difficulties, cost height.
Summary of the invention
For the high deficiency of complex structure, debug difficulties, cost that overcomes existing thyristor gating circuit, the utility model provide a kind of simple in structure, debugging is convenient, the thyristor gating circuit that reduces cost.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of thyristor gating circuit, comprise constant-current source, first analog switch, amplifier, storage capacitor, second analog switch, light-emitting diode and photo resistance, described constant-current source is connected with described first analog switch, described first analog switch connects the electrode input end of described amplifier, the output of described amplifier is connected with the negative input of described amplifier, one end of described capacitor is connected with the electrode input end of described amplifier, the other end of described capacitor is connected with the negative pole of power supply, described second analog switch is in parallel with described capacitor, the output of described amplifier connects described light-emitting diode, described light-emitting diode cooperates with described photo resistance, and described photo resistance is connected with the alternating current circuit of output.
Further, described first analog switch and boost button switch gearing, described second analog switch and the interlock of step-down push-button switch.
Further again, the power input of described amplifier is connected with rectifier power source.
Described photo resistance forms series arm with the triggering capacitances in series, two anodes of bidirectional triode thyristor are in parallel with described series arm respectively, described photo resistance is connected an end of bidirectional trigger diode with the intermediate node between the triggering electric capacity, the other end of described bidirectional trigger diode connects the control utmost point of described bidirectional triode thyristor.
The beneficial effects of the utility model mainly show: simple in structure, debugging makes things convenient for, reduces cost.
Description of drawings
Fig. 1 is the circuit diagram of the thyristor gating circuit of output parallel way.
Fig. 2 is the circuit diagram of the thyristor gating circuit of output series system.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
With reference to Fig. 1, Fig. 2, a kind of thyristor gating circuit, comprise constant-current source, first analog switch, amplifier, storage capacitor, second analog switch, light-emitting diode and photo resistance, described constant-current source is connected with described first analog switch, described first analog switch connects the electrode input end of described amplifier, the output of described amplifier is connected with the negative input of described amplifier, one end of described capacitor is connected with the electrode input end of described amplifier, the other end of described capacitor connects with the negative pole of power supply, described second analog switch is in parallel with described capacitor, the output of described amplifier connects described light-emitting diode, described light-emitting diode cooperates with described photo resistance, and described photo resistance is connected with the alternating current circuit of output.
Described first analog switch and boost button the switch circuit of switch (or be similar to) interlock, described second analog switch and step-down the push-button switch circuit of switch (or be similar to) link.The power input of described amplifier is connected with rectifier power source.
Described photo resistance forms series arm with the triggering capacitances in series, two anodes of bidirectional triode thyristor are in parallel with described series arm respectively, described photo resistance is connected an end of bidirectional trigger diode with the intermediate node between the triggering electric capacity, the other end of described bidirectional trigger diode connects the control utmost point of described bidirectional triode thyristor.
The course of work of present embodiment is: make its conducting when the control end of the first analog switch U1B obtains useful signal, constant-current source charges to storage capacitor C, amplifier U2A amplifies the voltage on the storage capacitor C, and expansion output current ability, LED 1 is brightened gradually, the resistance of photo resistance RL1 diminishes gradually, when output is inserted the alternating current circuit of being made up of bidirectional triode thyristor etc., will produce the phase shift triggering signal, and the angle of flow becomes greatly gradually, thereby the voltage in the alternating current circuit load is risen;
When obtaining useful signal, the control end of the second analog switch U1C makes its conducting, storage capacitor C discharge, and amplifier U2A output voltage descends, LED 1 deepening gradually, the resistance of photo resistance RL1 becomes greatly gradually, and the voltage in the alternating current circuit load descends.
This circuit main feature is not use potentiometer in the pressure regulation process, does not produce the circuit noise, does not use pulse transformer not have DC component output; With constant-current source electric capacity is charged, good linearity can not make the controllable silicon of output be in when conducting for a long time under the higher pole tension and burns out; Circuit structure is simple, the reliability height, and the photoelectricity coupling is isolated, and fail safe is good, and cost is low;
Output is organized flexible and changeable, but one or more, but the multichannel serial or parallel connection, as depicted in figs. 1 and 2; Series connection can be protected the phase-deficient operation that causes because of the luminous tube damage when being used for the threephase motor circuit; When being used for other multiphase loads, the current-limiting resistance that state in parallel can change luminous tube makes output voltage reach balance.
Claims (4)
1. thyristor gating circuit, it is characterized in that: described thyristor gating circuit comprises constant-current source, first analog switch, amplifier, storage capacitor, second analog switch, light-emitting diode and photo resistance, described constant-current source is connected with described first analog switch, described first analog switch connects the electrode input end of described amplifier, the output of described amplifier is connected with the negative input of described amplifier, one end of described capacitor is connected with the electrode input end of described amplifier, the other end of described capacitor is connected with the negative pole of power supply, described second analog switch is in parallel with described capacitor, the output of described amplifier connects described light-emitting diode, described light-emitting diode cooperates with described photo resistance, and described photo resistance is connected with the alternating current circuit of output.
2. thyristor gating circuit as claimed in claim 1 is characterized in that: described first analog switch and boost button switch gearing, described second analog switch and the interlock of step-down push-button switch.
3. thyristor gating circuit as claimed in claim 1 or 2 is characterized in that: the power input of described amplifier is connected with rectifier power source.
4. thyristor gating circuit as claimed in claim 3, it is characterized in that: described photo resistance forms series arm with the triggering capacitances in series, two anodes of bidirectional triode thyristor are in parallel with described series arm respectively, described photo resistance is connected an end of bidirectional trigger diode with the intermediate node between the triggering electric capacity, the other end of described bidirectional trigger diode connects the control utmost point of described bidirectional triode thyristor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201968230U CN201533297U (en) | 2009-09-20 | 2009-09-20 | Thyristor trigger circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201968230U CN201533297U (en) | 2009-09-20 | 2009-09-20 | Thyristor trigger circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201533297U true CN201533297U (en) | 2010-07-21 |
Family
ID=42528696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201968230U Expired - Fee Related CN201533297U (en) | 2009-09-20 | 2009-09-20 | Thyristor trigger circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201533297U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436277A (en) * | 2011-11-24 | 2012-05-02 | 清华大学 | Automatic anti-spill power-saving control method and device and electric cooker with device |
| CN108990219A (en) * | 2018-09-05 | 2018-12-11 | 宁波科尔维特照明有限公司 | Thyristor regulating optical module based on adjustable photo resistance |
-
2009
- 2009-09-20 CN CN2009201968230U patent/CN201533297U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436277A (en) * | 2011-11-24 | 2012-05-02 | 清华大学 | Automatic anti-spill power-saving control method and device and electric cooker with device |
| CN108990219A (en) * | 2018-09-05 | 2018-12-11 | 宁波科尔维特照明有限公司 | Thyristor regulating optical module based on adjustable photo resistance |
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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 |
Granted publication date: 20100721 Termination date: 20140920 |
|
| EXPY | Termination of patent right or utility model |