CN220290058U - Control circuit for preventing light controlled silicon from being triggered by mistake - Google Patents
Control circuit for preventing light controlled silicon from being triggered by mistake Download PDFInfo
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- CN220290058U CN220290058U CN202320466199.1U CN202320466199U CN220290058U CN 220290058 U CN220290058 U CN 220290058U CN 202320466199 U CN202320466199 U CN 202320466199U CN 220290058 U CN220290058 U CN 220290058U
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- silicon
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- control circuit
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- controlled silicon
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- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 52
- 239000010703 silicon Substances 0.000 title claims abstract description 52
- 230000001960 triggered effect Effects 0.000 title description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 51
- 230000003287 optical effect Effects 0.000 claims description 13
- 239000003990 capacitor Substances 0.000 claims description 7
- 230000000630 rising effect Effects 0.000 abstract description 6
- 230000002265 prevention Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
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Abstract
The utility model discloses a control circuit for preventing false triggering of a light controlled silicon, which comprises a false triggering prevention circuit, a light controlled silicon U1 and a controlled silicon triode QR1, wherein the light controlled silicon U1 is used for connecting a working circuit and a control circuit, the controlled silicon triode QR1 and the false triggering prevention circuit are arranged in the working circuit, and the light controlled silicon U1 triggers the controlled silicon triode QR1 to control the working circuit. The design purpose of preventing the voltage rising from rapidly causing overlarge voltage resistance at the two ends of the light-controlled silicon is realized through the false triggering prevention circuit.
Description
Technical Field
The utility model relates to the field of circuit control, in particular to a control circuit for preventing false triggering of an optical silicon controlled rectifier.
Background
In an alternating current load control circuit of the existing singlechip control system, an isolation control switch is often adopted between a control circuit and a working circuit to serve as a control transmission element between the control circuit and the working circuit, wherein the most used control transmission element is a light silicon controlled rectifier, and in actual use, the light silicon controlled rectifier is often matched with a silicon controlled rectifier triode, and the silicon controlled rectifier triode is triggered by the light silicon controlled rectifier to control the working circuit.
However, in the existing control circuit in which the silicon controlled rectifier and the silicon controlled rectifier triode are used in a matching way, the voltage rising rates of different silicon controlled rectifiers, namely, the rising slopes dv/dt of the voltages in the off state are different, when the actual voltage rising rates exceed the limit, the phenomenon that the silicon controlled rectifier is triggered by mistake can occur, so that for the control circuit using the silicon controlled rectifier with lower voltage rising slopes, an additional anti-misoperation trigger circuit is needed to improve the use reliability of the control circuit.
Disclosure of Invention
The utility model mainly aims to provide the control circuit for preventing the false triggering of the photo-controlled silicon, which is used for preventing the voltage rise from rapidly causing the excessively large voltage rise at the two ends of the photo-controlled silicon by adding the false triggering preventing circuit.
The utility model provides a control circuit for preventing false triggering of a photothyristor, which comprises a photothyristor U1 and a photothyristor triode QR1, wherein the input end of the photothyristor U1 is connected with a control circuit, the photothyristor triode QR1 is connected with a working circuit, and the photothyristor U1 triggers the photothyristor triode QR1 to control the working circuit;
the anti-false trigger circuit comprises divider resistors R1 and R2 and an anti-interference capacitor CX1; the divider resistors R1 and R2 are arranged in parallel at one end of the output loop of the light-controlled silicon U1, the R2 is connected with the anti-interference capacitor CX1 and then connected with the alternating current live wire ACL, and the R1 is connected with the load and then connected with the alternating current zero line ACN; the situation that the voltage resistance at two ends of the silicon controlled rectifier U1 rises too much can be relieved when the voltage rises rapidly through the anti-false triggering circuit.
Preferably, the model of the light controllable silicon U1 is MOC3022.
Preferably, the circuit further comprises protection resistors R3, R4 and R5, wherein one end of the output circuit of the silicon controlled rectifier U1 is connected with the protection resistor R3 and then connected with the voltage dividing resistors R1 and R2, and the other end of the output circuit of the silicon controlled rectifier U1 is connected with the protection resistor R4 and then connected with the silicon controlled rectifier triode QR1 and the protection resistor R5 respectively.
Preferably, the model of the triode thyristor QR1 is BTB16-800.
The control circuit for preventing the false triggering of the light controlled silicon has the beneficial effects that:
1. the situation that the voltage of the two ends of the optical controllable silicon U1 is excessively high can be relieved when the voltage is rapidly increased by arranging the anti-false trigger circuit, so that the design purpose of preventing the voltage from being increased to rapidly cause the excessively high voltage of the two ends of the optical controllable silicon is realized.
2. The setting of the anti-false trigger circuit is equivalent to reducing the requirement on the voltage rising slope of the light controllable silicon, so that a larger selection surface of the light controllable silicon can be provided, and the cost reduction and the efficiency enhancement can be effectively realized.
Drawings
FIG. 1 is a circuit diagram of a control circuit for preventing false triggering of an optical thyristor according to the present utility model;
the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1, an embodiment of the present utility model for preventing the false triggering of the scr is presented:
a control circuit for preventing the false triggering of an optical silicon controlled rectifier comprises a control circuit and a working circuit, wherein the control circuit is connected with the working circuit through an optical silicon controlled rectifier U1.
The positive pole and the negative pole of the light controlled silicon U1 are respectively a first pin and a second pin which are connected with a control circuit, and an output loop of the light controlled silicon U1 comprises a fourth pin and a sixth pin which are respectively connected with a working circuit.
The coupling circuit comprises a load, an anti-false trigger circuit, a triode thyristor QR1 and protection resistors R3, R4 and R5. The false triggering prevention circuit comprises voltage dividing resistors R1 and R2 and an anti-interference capacitor CX1.
One end of the output loop of the light-controlled silicon U1 is connected with the protection resistor R3 and then connected with the voltage dividing resistors R1 and R2, the other end of the R1 is connected with the load input end MT1, and the other end of the R2 is connected with the anti-interference capacitor CX1 and then connected with the alternating current live wire ACL. The other end of the output loop of the light controlled silicon U1 is connected with a protection resistor R4 and then is respectively connected with a third pin of the controlled silicon triode QR1 and a protection resistor R5. A first pin of the triode thyristor QR1 is connected with an ac live wire ACL, and a second pin of the triode thyristor QR1 is connected with the load input terminal MT 1. The load output terminal MT2 is connected to an ac neutral line ACN.
The model of the light-controllable silicon U1 is MOC3022.
The model of the triode thyristor QR1 is BTB16-800.
The situation that the voltage resistance at two ends of the light-controlled silicon U1 rises excessively can be relieved when the voltage rises rapidly by arranging the voltage dividing resistors R1 and R2 and the anti-interference capacitor CX1.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the present utility model and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the present utility model.
Claims (4)
1. A control circuit for preventing the false triggering of an optical thyristor,
the light-controlled silicon comprises a light-controlled silicon U1 and a silicon-controlled transistor QR1, wherein the input end of the light-controlled silicon U1 is connected with a control circuit, the silicon-controlled transistor QR1 is connected with a working circuit, and the light-controlled silicon U1 triggers the silicon-controlled transistor QR1 to control the working circuit;
it is characterized in that the method comprises the steps of,
the anti-false trigger circuit comprises divider resistors R1 and R2 and an anti-interference capacitor CX1; the divider resistors R1 and R2 are arranged in parallel at one end of the output loop of the light-controlled silicon U1, the R2 is connected with the anti-interference capacitor CX1 and then connected with the alternating current live wire ACL, and the R1 is connected with the load and then connected with the alternating current zero line ACN; the situation that the voltage resistance at two ends of the silicon controlled rectifier U1 rises too much can be relieved when the voltage rises rapidly through the anti-false triggering circuit.
2. The control circuit for preventing false triggering of an optical thyristor as recited in claim 1, wherein the optical thyristor U1 is model MOC3022.
3. The control circuit for preventing false triggering of an optical thyristor according to claim 1, further comprising protection resistors R3, R4 and R5, wherein one end of the output circuit of the optical thyristor U1 is connected with the voltage dividing resistors R1 and R2 after being connected with the protection resistor R3, and the other end of the output circuit of the optical thyristor U1 is connected with the protection resistor R4 and then is connected with the thyristor QR1 and the protection resistor R5 respectively.
4. The control circuit for preventing false triggering of an optical thyristor according to claim 1, wherein the model number of the triode thyristor QR1 is BTB16-800.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320466199.1U CN220290058U (en) | 2023-03-13 | 2023-03-13 | Control circuit for preventing light controlled silicon from being triggered by mistake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320466199.1U CN220290058U (en) | 2023-03-13 | 2023-03-13 | Control circuit for preventing light controlled silicon from being triggered by mistake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220290058U true CN220290058U (en) | 2024-01-02 |
Family
ID=89328652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320466199.1U Active CN220290058U (en) | 2023-03-13 | 2023-03-13 | Control circuit for preventing light controlled silicon from being triggered by mistake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220290058U (en) |
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2023
- 2023-03-13 CN CN202320466199.1U patent/CN220290058U/en active Active
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