CN202261234U - Constant-current and constant-power burn-in circuit for photoelectric coupler - Google Patents
Constant-current and constant-power burn-in circuit for photoelectric coupler Download PDFInfo
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- CN202261234U CN202261234U CN2011203550363U CN201120355036U CN202261234U CN 202261234 U CN202261234 U CN 202261234U CN 2011203550363 U CN2011203550363 U CN 2011203550363U CN 201120355036 U CN201120355036 U CN 201120355036U CN 202261234 U CN202261234 U CN 202261234U
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Abstract
The utility model relates to a constant-current and constant-power burn-in circuit for a photoelectric coupler. The constant-current and constant-power burn-in circuit comprises a master control central processing unit (CPU), a current detection circuit, a current feedback circuit, a power feedback circuit and a data selector, wherein the input end of the power feedback circuit is connected with the output end of the photoelectric coupler; the data selector is connected between the input end of the current detection circuit and the output end of the current feedback circuit; two input ends of the data selector are connected with the output end of the current feedback circuit and the output end of the power feedback circuit; and the control end of the data selector is connected with the master control CPU. The constant-current and constant-power burn-in circuit can perform constant-current burn-in on the photoelectric coupler and constant-power burn-in on the photoelectric coupler, so that quick switching between the constant-current burn-in and the constant-power burn-in is realized; therefore, the complexity of the burn-in of the photoelectric coupler is reduced, and the burn-in effect of the photoelectric coupler is enhanced.
Description
Technical field
The utility model relates to photoelectrical coupler ageing technical field, relates in particular to a kind of photoelectrical coupler constant current and constant power ageing circuit.
Background technology
At present, the ageing of photoelectrical coupler is the constant current ageing, promptly controls the electric current of photoelectrical coupler diode.Photoelectrical coupler constant current ageing circuit comprises master cpu, is used to detect the current detection circuit and the current feedback circuit of photoelectrical coupler diode current; The current detection circuit input links to each other with master cpu; The current detection circuit output links to each other with the photoelectrical coupler diode cathode, is parallel with current feedback circuit between current detection circuit input and the output.Though photoelectrical coupler constant current ageing circuit can detect the failure rate of photoelectrical coupler,, optocoupler has discreteness, and the electric current of photoelectrical coupler triode can produce difference in the ageing process, and this ageing effect to photoelectrical coupler can exert an influence.
Summary of the invention
The utility model technical problem to be solved is the problems referred to above that exist to existing photoelectrical coupler ageing technology, and providing a kind of can carry out the photoelectrical coupler constant current and constant power ageing circuit that constant current ageing or output carry out permanent power ageing to the photoelectrical coupler input.
For addressing the above problem, the technical scheme of the utility model is:
A kind of photoelectrical coupler constant current and constant power ageing circuit; Have a master cpu, a current detection circuit and a current feedback circuit; Said current detection circuit input links to each other with master cpu; The current detection circuit output links to each other with the photoelectrical coupler diode cathode; Be parallel with current feedback circuit between current detection circuit input and the output, said ageing circuit also comprises Feedback of Power circuit and data selector, and the Feedback of Power circuit input end links to each other with the output of photoelectrical coupler; Be connected with data selector between current detection circuit input and the current feedback circuit output; Data selector two inputs link to each other with the Feedback of Power circuit output end with the current feedback circuit output respectively, and the control end of data selector links to each other with master cpu, and said master cpu, current detection circuit, current feedback circuit, photoelectrical coupler, Feedback of Power circuit and data selector are supplied power by power supply respectively.
Preferably; Said current detection circuit comprises first operational amplifier, FET, diode, electric capacity and a plurality of resistance; The first operational amplifier normal phase input end links to each other with master cpu through resistance; Inverting input links to each other with the data selector output through resistance, and first operational amplifier output terminal links to each other with fet gate through resistance, is parallel with electric capacity between the first operational amplifier inverting input and the output; Be parallel with diode between said fet gate and the source electrode; Source electrode links to each other with Power Groud through first resistance, and the FET drain electrode links to each other with the photoelectrical coupler diode cathode through fuse, and the said first resistance two ends are parallel with current feedback circuit.
Preferably; Said Feedback of Power circuit comprises the 3rd operational amplifier and a plurality of resistance; Be parallel with resistance between the 3rd operational amplifier inverting input and the 3rd operational amplifier output terminal; The 3rd operational amplifier output terminal links to each other with the data selector input, is parallel with second resistance, the 3rd resistance and the 4th resistance between the 3rd operational amplifier normal phase input end and the inverting input successively, and second resistance links to each other with photoelectric coupler output end with the junction of the 3rd resistance; The junction of the 3rd resistance and the 4th resistance links to each other with Power Groud, and the 3rd operational amplifier normal phase input end links to each other with simulation ground through resistance.
Preferably; Said current feedback circuit comprises second operational amplifier and a plurality of resistance; The second operational amplifier normal phase input end links to each other with the FET source electrode through resistance, and normal phase input end links to each other with simulation ground through resistance, is parallel with resistance between the second operational amplifier inverting input and second operational amplifier output terminal; Inverting input links to each other with Power Groud through resistance, and second operational amplifier output terminal links to each other with the data selector input.
Preferably, be connected with triode on the said FET source electrode, the FET source electrode links to each other with transistor collector, is parallel with electric capacity between transistor base and the emitter, and transistor emitter links to each other with ground, and transistor base links to each other with master cpu.
Preferably, said fuse is a resettable fuse.
The photoelectrical coupler constant current and constant power ageing circuit of the utility model; Both can carry out the constant current ageing to photoelectrical coupler; Can carry out permanent power ageing to photoelectrical coupler again; Can realize the quick switching of constant current ageing and permanent power ageing, reduce the complexity of photoelectrical coupler ageing, improve the ageing effect of photoelectrical coupler.
Description of drawings
Fig. 1 is that the circuit of the utility model photoelectrical coupler constant current and constant power ageing circuit connects block diagram.
Fig. 2 is the circuit theory diagrams of the utility model photoelectrical coupler constant current and constant power ageing circuit.
Embodiment
Below in conjunction with accompanying drawing and embodiment further explain the utility model, but the protection range of the utility model is not limited to this.
With reference to Fig. 1-2, a kind of photoelectrical coupler constant current and constant power ageing circuit of the utility model has a master cpu, a current detection circuit, a current feedback circuit, a Feedback of Power circuit and a data selector.Said current detection circuit is used to detect the electric current of photoelectrical coupler input; Make the electric current that produces photoelectric coupler output end; Current detection circuit has two inputs and two outputs respectively, and one of them input links to each other with master cpu, and another input links to each other with the output of data selector; The output of current detection circuit links to each other with the photoelectrical coupler diode cathode, and another output links to each other with the input of current feedback circuit.The output of said current feedback circuit links to each other with the input of data selector, and another input of data selector links to each other with the output of Feedback of Power circuit, and the control end of data selector links to each other with master cpu.The input of said Feedback of Power circuit links to each other with the output of photoelectrical coupler.Said master cpu, current detection circuit, current feedback circuit, photoelectrical coupler, Feedback of Power circuit and data selector are supplied power by power supply respectively.
Said current detection circuit comprises the first operational amplifier N1, FET V1, diode V2, triode V3, resistance R 1, resistance R 2, resistance R 3, first resistance R 4, capacitor C 1, capacitor C 2 and resettable fuse, and the model of operational amplifier N1 is OP07, and the model of FET V1 is IRF540; The model of triode V3 is s9013, and diode V2 is unidirectional conducting diode, and forward voltage drop is 18 volts; The resistance of resistance R 1 and resistance R 2 is 10k ohm; The resistance of resistance R 3 is 5.1k ohm, and first resistance R 4 is a precision resister, and resistance is 50 ohm; The model of capacitor C 1 is 103; The model of capacitor C 2 is 104, and resettable fuse is a WH60 series, and the model of data selector D1 is CD4053BC.The normal phase input end of the first operational amplifier N1 links to each other with master cpu through resistance R 2; Inverting input links to each other with the output Y end of data selector D1 through resistance R 1; The output of the first operational amplifier N1 links to each other with the grid of FET V1 through resistance R 3; Be parallel with capacitor C 1 between the inverting input of the first operational amplifier N1 and the output; Be parallel with diode V2 between the grid of said FET V1 and the source electrode, the anode of diode V2 links to each other with source electrode, and the source electrode of FET V1 links to each other with Power Groud PGND through first resistance R 4; FET V1 drain electrode links to each other with the photoelectrical coupler diode cathode through fuse, and said first resistance R 4 two ends are parallel with current feedback circuit.Be connected with triode V3 on the source electrode of said FET V1; FET V1 source electrode links to each other with triode V3 collector electrode; Be parallel with capacitor C 2 between the base stage of triode V3 and the emitter, the emitter of triode V3 links to each other with ground, and the base stage of triode V3 links to each other with master cpu.
Said current feedback circuit comprises the second operational amplifier N2 and resistance R 5, R6, R7, R8; The model of the second operational amplifier N2 is OP07; Resistance R 5, R6, R7 and R8 are the precision resister of resistance 100k ohm, photoelectrical coupler with positive 12 volts of power voltage supplies.The normal phase input end of the second operational amplifier N2 links to each other with the source electrode of FET V1 through resistance R 5; Normal phase input end links to each other with simulation ground AGND through resistance R 8; Be parallel with resistance R 7 between the output of the inverting input of the second operational amplifier N2 and the second operational amplifier N2; Inverting input links to each other with Power Groud PGND through resistance R 6, and the second operational amplifier N2 output links to each other with the input Y0 end of data selector D1.
Said Feedback of Power circuit comprises the 3rd operational amplifier N3 and the 3rd resistance R 9, the 4th resistance R 10, second resistance R 11, resistance R 12, resistance R 13; The model of the 3rd operational amplifier N3 is OP07; The 4th resistance R 10, second resistance R 11, resistance R 12, resistance R 13 are the precision resister of resistance 100k ohm, and the 3rd resistance R 9 is the precision resister of 50 ohm of resistances.Be parallel with resistance R 12 between the output of the inverting input of the 3rd operational amplifier N3 and the 3rd operational amplifier N3; The 3rd operational amplifier N3 output links to each other with the input Y1 end of data selector D1; Be parallel with second resistance R 11, the 3rd resistance R 9 and the 4th resistance R 10 between the normal phase input end of the 3rd operational amplifier N3 and the inverting input successively; Second resistance R 11 links to each other with the emitter of photoelectrical coupler triode with the junction of the 3rd resistance R 9; The junction of the 3rd resistance R 9 and the 4th resistance R 10 links to each other with Power Groud PGND, and the normal phase input end of the 3rd operational amplifier N3 links to each other with simulation ground AGND through resistance R 13.
The power supply of master cpu, current detection circuit, current feedback circuit, photoelectrical coupler, Feedback of Power circuit and data selector is prior art in the utility model, repeats no more at this.
Claims (6)
1. photoelectrical coupler constant current and constant power ageing circuit; Have a master cpu, a current detection circuit and a current feedback circuit; Said current detection circuit input links to each other with master cpu; The current detection circuit output links to each other with the photoelectrical coupler diode cathode, is parallel with current feedback circuit between current detection circuit input and the output, it is characterized in that; Said ageing circuit also comprises Feedback of Power circuit and data selector; The Feedback of Power circuit input end links to each other with the output of photoelectrical coupler, is connected with data selector between current detection circuit input and the current feedback circuit output, and data selector two inputs link to each other with the Feedback of Power circuit output end with the current feedback circuit output respectively; The control end of data selector links to each other with master cpu, and said master cpu, current detection circuit, current feedback circuit, photoelectrical coupler, Feedback of Power circuit and data selector are supplied power by power supply respectively.
2. photoelectrical coupler constant current and constant power ageing circuit according to claim 1; It is characterized in that; Said current detection circuit comprises first operational amplifier, FET, diode, electric capacity and a plurality of resistance, and the first operational amplifier normal phase input end links to each other with master cpu through resistance, and inverting input links to each other with the data selector output through resistance; First operational amplifier output terminal links to each other with fet gate through resistance; Be parallel with electric capacity between the first operational amplifier inverting input and the output, be parallel with diode between said fet gate and the source electrode, source electrode links to each other with Power Groud through first resistance; The FET drain electrode links to each other with the photoelectrical coupler diode cathode through fuse, and the said first resistance two ends are parallel with current feedback circuit.
3. photoelectrical coupler constant current and constant power ageing circuit according to claim 1 and 2; It is characterized in that; Said Feedback of Power circuit comprises the 3rd operational amplifier and a plurality of resistance; Be parallel with resistance between the 3rd operational amplifier inverting input and the 3rd operational amplifier output terminal; The 3rd operational amplifier output terminal links to each other with the data selector input, is parallel with second resistance, the 3rd resistance and the 4th resistance between the 3rd operational amplifier normal phase input end and the inverting input successively, and second resistance links to each other with photoelectric coupler output end with the junction of the 3rd resistance; The junction of the 3rd resistance and the 4th resistance links to each other with Power Groud, and the 3rd operational amplifier normal phase input end links to each other with simulation ground through resistance.
4. photoelectrical coupler constant current and constant power ageing circuit according to claim 3; It is characterized in that; Said current feedback circuit comprises second operational amplifier and a plurality of resistance; The second operational amplifier normal phase input end links to each other with the FET source electrode through resistance, and normal phase input end links to each other with simulation ground through resistance, is parallel with resistance between the second operational amplifier inverting input and second operational amplifier output terminal; Inverting input links to each other with Power Groud through resistance, and second operational amplifier output terminal links to each other with the data selector input.
5. photoelectrical coupler constant current and constant power ageing circuit according to claim 2; It is characterized in that; Be connected with triode on the said FET source electrode, the FET source electrode links to each other with transistor collector, is parallel with electric capacity between transistor base and the emitter; Transistor emitter links to each other with ground, and transistor base links to each other with master cpu.
6. photoelectrical coupler constant current and constant power ageing circuit according to claim 2 is characterized in that said fuse is a resettable fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203550363U CN202261234U (en) | 2011-09-21 | 2011-09-21 | Constant-current and constant-power burn-in circuit for photoelectric coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203550363U CN202261234U (en) | 2011-09-21 | 2011-09-21 | Constant-current and constant-power burn-in circuit for photoelectric coupler |
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| CN202261234U true CN202261234U (en) | 2012-05-30 |
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| CN2011203550363U Expired - Fee Related CN202261234U (en) | 2011-09-21 | 2011-09-21 | Constant-current and constant-power burn-in circuit for photoelectric coupler |
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| CN (1) | CN202261234U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124897A (en) * | 2016-07-11 | 2016-11-16 | 中国电子科技集团公司第四十四研究所 | Photoelectrical coupler can be carried out electricity aging test and the test system of parameter testing |
| CN106291398A (en) * | 2016-08-31 | 2017-01-04 | 北京航天科颐技术有限公司 | A kind of for providing the ageing rack of Heng Yuan for secondary power supply aging test |
| CN113406427A (en) * | 2021-07-23 | 2021-09-17 | 中国振华集团永光电子有限公司（国营第八七三厂） | Constant-power aging circuit for output end of photoelectric coupler |
| CN113533898A (en) * | 2021-07-23 | 2021-10-22 | 中国振华集团永光电子有限公司（国营第八七三厂） | Batch photoelectric coupler aging circuit |
| CN115309224A (en) * | 2022-10-10 | 2022-11-08 | 杭州三海电子有限公司 | Circuit and method for simultaneously aging constant-current and constant-power photoelectric coupler |
-
2011
- 2011-09-21 CN CN2011203550363U patent/CN202261234U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124897A (en) * | 2016-07-11 | 2016-11-16 | 中国电子科技集团公司第四十四研究所 | Photoelectrical coupler can be carried out electricity aging test and the test system of parameter testing |
| CN106291398A (en) * | 2016-08-31 | 2017-01-04 | 北京航天科颐技术有限公司 | A kind of for providing the ageing rack of Heng Yuan for secondary power supply aging test |
| CN106291398B (en) * | 2016-08-31 | 2018-08-31 | 北京航天科颐技术有限公司 | A kind of ageing rack for providing Heng Yuan for secondary power supply aging test |
| CN113406427A (en) * | 2021-07-23 | 2021-09-17 | 中国振华集团永光电子有限公司（国营第八七三厂） | Constant-power aging circuit for output end of photoelectric coupler |
| CN113533898A (en) * | 2021-07-23 | 2021-10-22 | 中国振华集团永光电子有限公司（国营第八七三厂） | Batch photoelectric coupler aging circuit |
| CN113533898B (en) * | 2021-07-23 | 2023-07-14 | 中国振华集团永光电子有限公司（国营第八七三厂） | Aging circuit of batch photoelectric coupler |
| CN113406427B (en) * | 2021-07-23 | 2024-04-26 | 中国振华集团永光电子有限公司（国营第八七三厂） | Constant-power aging circuit for output end of photoelectric coupler |
| CN115309224A (en) * | 2022-10-10 | 2022-11-08 | 杭州三海电子有限公司 | Circuit and method for simultaneously aging constant-current and constant-power photoelectric coupler |
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| Date | Code | Title | Description |
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| 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: 20120530 Termination date: 20140921 |
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| EXPY | Termination of patent right or utility model |