CN202854288U - Diode polarity detection circuit - Google Patents
Diode polarity detection circuit Download PDFInfo
- Publication number
- CN202854288U CN202854288U CN 201220504726 CN201220504726U CN202854288U CN 202854288 U CN202854288 U CN 202854288U CN 201220504726 CN201220504726 CN 201220504726 CN 201220504726 U CN201220504726 U CN 201220504726U CN 202854288 U CN202854288 U CN 202854288U
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- diode
- test pieces
- electromagnetic relay
- detection circuit
- test sheet
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model relates to a diode polarity detection circuit. The diode polarity detection circuit comprises an electromagnetic relay, a first test sheet used for connecting one end of a tested diode, and a second test sheet used for connecting the other end of the tested diode. One end of the electromagnetic relay is connected with the first test sheet; the other ends of the second test sheet and the electromagnetic relay are connecting ends of a power source; the diode polarity detection circuit further comprises an indication circuit which comprises a light-emitting diode and a first resistor; a positive pole end of the light-emitting diode is connected with the first test sheet; a negative pole end of the light-emitting diode is connected with one end of the first resistor; and the other end of the first resistor is connected with the second test sheet. With the diode polarity detection circuit of the utility model, the situations of crossing and the bending of diodes can be greatly reduced when an R-6 package material is produced, and therefore, scrapped diodes can be decreased, and production efficiency can be improved.
Description
Technical field
The utility model relates to a kind of diode polarity testing circuit.
Background technology
At present, for preventing diodes inside terminal box polarity welding mistake, whether all need to adopt the mode of visual inspection to detect its polarity before welding places correctly, not only labor intensive, detection time are slow, and accuracy of detection is not high, often or detection undetected because of human factor makes mistakes easily, causes diode polarity welding mistake.So be revised as: during owing to conventional cohoront machine, single machine production R-6 encapsulating material, material body is larger, the situation such as in cohoront machine, single machine production process, cross pipe occurs easily, bend, so change on the basis of existing equipment and to establish circuit, this test pattern is changed, thus the situation that reduces cross pipe in the production run, bends.This design has also reduced scrappage greatly, has improved employee's work efficiency.
Summary of the invention
The situations such as for above-mentioned technical matters, the utility model provides a kind of diode polarity testing circuit, and the utility model significantly reduces cross pipe, bend reduce useless pipe, have improved production efficiency.
The technical scheme that realizes goal of the invention of the present utility model is as follows:
A kind of diode polarity testing circuit, comprise electromagnetic relay, be used for connecting the first test pieces of measured diode one end, and the second test pieces that is used for connecting the measured diode other end, one end of electromagnetic relay is connected with the first test pieces, the other end of the second test pieces and the first electromagnetic relay is the link of power supply, also comprise an indicating circuit, this indicating circuit comprises light emitting diode and the first resistance, the anode tap of light emitting diode connects the first test pieces, the cathode terminal of light emitting diode connects an end of the first resistance, and the other end of the first resistance connects the second test pieces.
Adopted such scheme, when diode is tested, with the anode tap of the first test pieces and light emitting diode and a pin overlap joint of measured diode, another pin of the second test pieces and the first resistance and measured diode overlaps, if the connection of diode is correct, then the light emitting diode of indicating circuit is lit, if diode is the Opposite direction connection pipe, then light emitting diode is not lit.The situation such as can significantly reduce cross pipe like this, bend reduces useless pipe, has improved production efficiency.
Further, also comprise first diode, this first diodes in parallel is at the two ends of electromagnetic relay.By the first diode, can form discharge loop to the voltage that is present in the electromagnetic relay, reduce the voltage that has in the electromagnetic relay all the other devices are formed harm.
Further; also comprise a holding circuit; this holding circuit comprises the second diode, the 3rd diode and electric capacity; be connected with electromagnetic relay after the anode tap parallel connection of the cathode terminal of the second diode and the 3rd diode; the anode tap of the second diode and the cathode terminal parallel connection of the 3rd diode are connected an end of electric capacity afterwards, and the other end of electric capacity is connected with the second test pieces.When measured diode was reversing tube, the electric current that flows out from power supply can not pass through measured diode, and at this moment, electric current flows through by holding circuit its electric capacity is charged, and avoids current load on test pieces, damaged test pieces.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Embodiment
With reference to Fig. 1, diode polarity testing circuit of the present utility model, comprise electromagnetic relay L, be used for to connect the first test pieces Y1 of measured diode one end, and the second test pieces Y2 that is used for connecting the measured diode other end, the end of electromagnetic relay L is connected with the first test pieces Y1, and the other end of the second test pieces Y2 and the first electromagnetic relay is the link of power supply.Also comprise an indicating circuit, this indicating circuit comprises light emitting diode D4 and the first resistance R 1, the anode tap of light emitting diode connects the first test pieces, and the cathode terminal of light emitting diode D4 connects an end of the first resistance R 1, and the other end of the first resistance R 1 connects the second test pieces Y2.Also comprise first a diode D1, this first diode D1 is connected in parallel on the two ends of electromagnetic relay L.Also comprise a holding circuit; this holding circuit comprises the second diode D2, the 3rd diode D3 and capacitor C 1; be connected with electromagnetic relay after the anode tap parallel connection of the cathode terminal of the second diode D2 and the 3rd diode D3; the anode tap of the second diode D2 and the cathode terminal parallel connection of the 3rd diode D3 are connected an end of electric capacity afterwards, and the other end of capacitor C 1 is connected with the second test pieces.
Claims (3)
1. diode polarity testing circuit, it is characterized in that: comprise electromagnetic relay, be used for connecting the first test pieces of measured diode one end, and the second test pieces that is used for connecting the measured diode other end, one end of electromagnetic relay is connected with the first test pieces, the other end of the second test pieces and the first electromagnetic relay is the link of power supply, also comprise an indicating circuit, this indicating circuit comprises light emitting diode and the first resistance, the anode tap of light emitting diode connects the first test pieces, the cathode terminal of light emitting diode connects an end of the first resistance, and the other end of the first resistance connects the second test pieces.
2. diode polarity testing circuit according to claim 1, it is characterized in that: also comprise first diode, this first diodes in parallel is at the two ends of electromagnetic relay.
3. diode polarity testing circuit according to claim 1; it is characterized in that: also comprise a holding circuit; this holding circuit comprises the second diode, the 3rd diode and electric capacity; be connected with electromagnetic relay after the anode tap parallel connection of the cathode terminal of the second diode and the 3rd diode; the anode tap of the second diode and the cathode terminal parallel connection of the 3rd diode are connected an end of electric capacity afterwards, and the other end of electric capacity is connected with the second test pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220504726 CN202854288U (en) | 2012-09-28 | 2012-09-28 | Diode polarity detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220504726 CN202854288U (en) | 2012-09-28 | 2012-09-28 | Diode polarity detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202854288U true CN202854288U (en) | 2013-04-03 |
Family
ID=47985471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220504726 Expired - Fee Related CN202854288U (en) | 2012-09-28 | 2012-09-28 | Diode polarity detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202854288U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459421A (en) * | 2014-12-30 | 2015-03-25 | 广州视源电子科技股份有限公司 | Diode polarity detecting method and system |
| CN112782565A (en) * | 2021-01-29 | 2021-05-11 | 福州派利德电子科技有限公司 | Polarity test method and system for chip with asymmetric structure |
-
2012
- 2012-09-28 CN CN 201220504726 patent/CN202854288U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459421A (en) * | 2014-12-30 | 2015-03-25 | 广州视源电子科技股份有限公司 | Diode polarity detecting method and system |
| CN104459421B (en) * | 2014-12-30 | 2017-07-11 | 广州视源电子科技股份有限公司 | A kind of diode polarity detection method and system |
| CN112782565A (en) * | 2021-01-29 | 2021-05-11 | 福州派利德电子科技有限公司 | Polarity test method and system for chip with asymmetric structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20130928 |