CN203643520U - Optoelectronic coupler fault detector - Google Patents
Optoelectronic coupler fault detector Download PDFInfo
- Publication number
- CN203643520U CN203643520U CN201320609250.6U CN201320609250U CN203643520U CN 203643520 U CN203643520 U CN 203643520U CN 201320609250 U CN201320609250 U CN 201320609250U CN 203643520 U CN203643520 U CN 203643520U
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- binding post
- circuit
- resistance
- voltage
- keyswitch
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Abstract
The utility model relates to an optoelectronic coupler fault detector comprising a housing, a front surface of which is provided with button switches S1, S2. A test circuit board is fixedly disposed in the housing, and is provided with a light emitting diode and an adjustable resistor adjusting rod. A binding post A, a binding post B, a binding post C, and a binding post D pass through reserved circular holes in the front surface of the housing. The test circuit board comprises a DC voltage stabilization power supply circuit, and 3V DC voltage output by the DC voltage stabilization power supply circuit is serially connected with one end of the button switch S1. One circuit of the button switch S1 is serially connected with the button switch S2, the adjustable resistor, and the resistor R1, and then is connected with the binding post A. The other circuit of the button switch S1 is serially connected with the resistor R2, and then is connected with the binding post B. The binding post C is grounded, and the binding post D is serially connected with the light emitting diode, and then is grounded. The DC voltage stabilization power supply circuit is formed by sequentially connecting a step-down circuit, a rectification circuit, a filter circuit, and a voltage stabilization circuit, and can be used to output the stable 3V DC voltage. The optoelectronic coupler fault detector has advantages of simple structure, convenient use, and accurate test.
Description
Technical field
The utility model relates to field tests, particularly a kind of photoelectrical coupler fault detector.
Background technology
Photoelectrical coupler is as circuit isolating device, plays signal isolation, coupled transfer effect is widely used in the each field of the commercial production such as household electrical appliance, frequency converter.When if the electronic equipment of having applied photoelectrical coupler above-mentioned breaks down, tester is in failure diagnostic process, usually need to judge the quality of photoelectrical coupler, common method is to utilize two multimeter tests, a multimeter is measured photoelectrical coupler input end with R*1, another multimeter is measured photoelectric coupler output end with R*100, in the time of input end conducting, the pointer of output terminal multimeter has swing, judge that photoelectrical coupler is normal, this test mode is inaccurate, and easily erroneous judgement, affects testing efficiency.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of a kind of photoelectrical coupler fault detector of simple in structure and accurate judgement.
The utility model adopts following technical scheme: comprise shell, outer casing frontispiece is provided with keyswitch S1, keyswitch S2, testing circuit board is fixedly housed in shell, LED on testing circuit board, adjustable resistance Rp adjuster bar, binding post A, binding post B, binding post C, post D pass from the reserved circular hole of outer casing frontispiece; Testing circuit board comprises, DC-stabilized circuit, the 3V DC voltage of DC-stabilized circuit output is connected with keyswitch S1 one end, keyswitch S1Yi road is connected with binding post A with after keyswitch S2, adjustable resistance Rp, resistance R 1 series connection, another road of keyswitch S1 is connected with binding post B with after resistance R 2 series connection, binding post C ground connection, post D connect with LED after ground connection; Described DC-stabilized circuit is connected to form successively by reduction voltage circuit, rectification circuit, filtering circuit, mu balanced circuit, stable output 3V DC voltage; Reduction voltage circuit utilizes transformer T1 by 220V alternating voltage step-down output 6V voltage, and rectification circuit is the rectifier bridge of four diode compositions, and filtering circuit is made up of capacitor C in parallel 1 and capacitor C 2; Mu balanced circuit is by resistance R 3, diode U1, and triode Q1, resistance R 4 and resistance R 5 form; When test, the anode of single channel photoelectrical coupler to be measured, collector, negative electrode, emitter are connected with binding post A, binding post B, binding post C, post D respectively.
Further, described adjustable resistance Rp is 220 Ω adjustable resistances, and the first resistance R 1 is 220 Ω resistance, and the second resistance R 2 is 330 Ω resistance.
Positive technique effect of the present utility model: the utility model is simple in structure, easy to use.After single channel photoelectrical coupler pin to be measured and binding post A, binding post B, binding post C, post D are connected, adjust adjustable resistance Rp resistance, according to LED, brightness changes to judge that whether photoelectrical coupler is normal, measures rapidly, accurately.
Brief description of the drawings
Accompanying drawing 2 is the circuit theory diagrams of testing circuit board in the utility model.
Accompanying drawing 3 is the circuit theory diagrams of DC-stabilized circuit in the utility model.
Embodiment
As shown in accompanying drawing 1 and Fig. 2, the utility model comprises: shell, outer casing frontispiece is provided with keyswitch S1, keyswitch S2, testing circuit board is fixedly housed in shell, LED on testing circuit board, adjustable resistance Rp adjuster bar, binding post A, binding post B, binding post C, post D pass from the reserved circular hole of outer casing frontispiece; Testing circuit board comprises, DC-stabilized circuit, the 3V DC voltage of DC-stabilized circuit output is connected with keyswitch S1 one end, keyswitch S1Yi road is connected with binding post A with after keyswitch S2, adjustable resistance Rp, resistance R 1 series connection, another road of keyswitch S1 is connected with binding post B with after resistance R 2 series connection, binding post C ground connection, post D connect with LED after ground connection.
With reference to Fig. 3, DC-stabilized circuit is connected to form successively by reduction voltage circuit, rectification circuit, filtering circuit, mu balanced circuit, stable output 3V DC voltage; Reduction voltage circuit utilizes transformer T1 by 220V alternating voltage step-down output 6V voltage, rectification circuit is that four diodes are the rectifier bridge of diode D1, D2, D3, D4 composition, utilize the unilateal conduction characteristic of diode to obtain pulsating direct current through overcommutation, filtering circuit is made up of capacitor C in parallel 1 and capacitor C 2, utilize logical friendship of electric capacity to hinder directly, the character of logical high frequency resistance low frequency, by the alternating component filtering of passing through in the steady direct current of rectifier bridge, thereby obtains smoother DC voltage.Mu balanced circuit is by resistance R 3, diode U1, and triode Q1, resistance R 4 and resistance R 5 form, and realize the 3V DC voltage stability of output, do not change with the variation of ac grid voltage and load; .
When test, the anode of single channel photoelectrical coupler to be measured, collector, negative electrode, emitter are connected with binding post A, binding post B, binding post C, post D respectively.In preferred embodiment, adjustable resistance Rp is 220 Ω adjustable resistances, and resistance R 1 is 220 Ω resistance, and resistance R 2 is 330 Ω resistance.
In the time that reality is tested, the anode of single channel photoelectrical coupler to be measured, collector, negative electrode, emitter are connected with binding post A, binding post B, binding post C, post D respectively, then the switch S 1 that pushes button, power connection, LED does not work, after the switch S that pushes button 2, if LED is lighted, and while adjusting adjustable resistance Rp resistance value, the luminous intensity of LED can change, illustrate that photoelectrical coupler is normal, vice versa.
Claims (2)
1. a photoelectrical coupler fault detector, comprise shell, it is characterized in that: outer casing frontispiece is provided with keyswitch S1, keyswitch S2, testing circuit board is fixedly housed in shell, light emitting diode (LED) on testing circuit board, adjustable resistance (Rp) adjuster bar, binding post A, binding post B, binding post C, post D pass from the reserved circular hole of outer casing frontispiece; Described testing circuit board comprises, DC-stabilized circuit, the 3V DC voltage of DC-stabilized circuit output is connected with keyswitch S1 one end, keyswitch S1Yi road is connected with binding post A with after keyswitch S2, adjustable resistance (Rp), resistance R 1 series connection, another road of keyswitch S1 is connected with binding post B with after resistance R 2 series connection, binding post C ground connection, post D connect with light emitting diode (LED) after ground connection; Described DC-stabilized circuit is connected to form successively by reduction voltage circuit, rectification circuit, filtering circuit, mu balanced circuit, stable output 3V DC voltage; Described reduction voltage circuit utilizes transformer (T1) by 220V alternating voltage step-down output 6V voltage, and described rectification circuit is the rectifier bridge of four diode compositions, and described filtering circuit is made up of capacitor C in parallel 1 and capacitor C 2; Described mu balanced circuit is by resistance R 3, diode (U1), and triode (Q1), resistance R 4 and resistance R 5 form; When test, the anode of single channel photoelectrical coupler to be measured, collector, negative electrode, emitter are connected with binding post A, binding post B, binding post C, post D respectively.
2. a kind of photoelectrical coupler fault detector according to claim 1, is characterized in that described adjustable resistance (Rp) is 220 Ω adjustable resistances, and resistance R 1 is 220 Ω resistance, and resistance R 2 is 330 Ω resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320609250.6U CN203643520U (en) | 2013-09-29 | 2013-09-29 | Optoelectronic coupler fault detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320609250.6U CN203643520U (en) | 2013-09-29 | 2013-09-29 | Optoelectronic coupler fault detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203643520U true CN203643520U (en) | 2014-06-11 |
Family
ID=50874755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320609250.6U Expired - Fee Related CN203643520U (en) | 2013-09-29 | 2013-09-29 | Optoelectronic coupler fault detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203643520U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108155782A (en) * | 2018-01-31 | 2018-06-12 | 常州斯坦博电子科技有限公司 | Flyback restores power circuit |
| CN113687224A (en) * | 2021-09-18 | 2021-11-23 | 杭州和利时自动化有限公司 | Switching signal acquisition system and switching signal acquisition equipment thereof |
-
2013
- 2013-09-29 CN CN201320609250.6U patent/CN203643520U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108155782A (en) * | 2018-01-31 | 2018-06-12 | 常州斯坦博电子科技有限公司 | Flyback restores power circuit |
| CN113687224A (en) * | 2021-09-18 | 2021-11-23 | 杭州和利时自动化有限公司 | Switching signal acquisition system and switching signal acquisition equipment thereof |
| CN113687224B (en) * | 2021-09-18 | 2024-02-02 | 杭州和利时自动化有限公司 | Switch signal acquisition system and switch signal acquisition equipment thereof |
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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: 20140611 Termination date: 20140929 |
|
| EXPY | Termination of patent right or utility model |