CN203606449U - Device used for short circuit measurement between pins of connector of electronic product - Google Patents
Device used for short circuit measurement between pins of connector of electronic product Download PDFInfo
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- CN203606449U CN203606449U CN201320657287.6U CN201320657287U CN203606449U CN 203606449 U CN203606449 U CN 203606449U CN 201320657287 U CN201320657287 U CN 201320657287U CN 203606449 U CN203606449 U CN 203606449U
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- 238000005259 measurement Methods 0.000 title abstract description 4
- 238000012360 testing method Methods 0.000 claims description 27
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
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Abstract
Disclosed is a device used for the short circuit measurement between pins of a connector of an electronic product. The device comprises a pin connecting terminal set, a detection circuit, an indication circuit, a pulse generator and a pulse signal processing circuit, the pin connecting terminal set comprises more than two pin connecting terminals, and each pin connecting terminal is respectively provided with a pin measuring circuit comprising a voltage comparator. The pulse generator is employed to add electric signals with low voltage and low current to a pin of the connector, the detection circuit is employed to detect the voltage of other pins, and no voltage can be detected at other pins in normal conditions; if short circuit occurs, the voltage of the other pins is detected, and the short circuit state is displayed via an indication element by the adoption of the pulse signal processing circuit and the indication circuit. The device can rapidly measure that whether short circuit happens to more than two pins of the connector of the electronic product.
Description
Technical field:
The utility model relates to electricity field, relates in particular to electronic circuit, particularly a kind of device of measuring for short circuit between electronic product connector pin.
Background technology:
In prior art, measure between each pin of electronic product each connector in the process of whether short circuit, need to use the survey instrument of multiple specialty, operation inconvenience, consuming time many, survey instrument is expensive, and volume is large.
Summary of the invention:
The purpose of this utility model is to provide a kind of device of measuring for short circuit between electronic product connector pin, and the described this device of measuring for short circuit between electronic product connector pin will solve prior art and measure between each pin of electronic product connector the operation of whether short circuit many, inconvenient, instrument is expensive and volume is larger technical matters consuming time.
This device of measuring for short circuit between electronic product connector pin of the present utility model, comprise a pin link subgroup, a testing circuit, an indicating circuit, a pulse producer and a pulse signal treatment circuit, in described pin link subgroup, include the pin splicing ear of more than two number, wherein, the output terminal of described pulse producer is connected with the input end of described testing circuit, the output terminal of testing circuit is connected with the input end of described pulse signal treatment circuit, testing circuit includes the pin metering circuit of more than two number, pin metering circuit described in any one is connected with the pin splicing ear described in separately, described indicating circuit is connected with the output terminal of pulse signal treatment circuit.
Further, pin metering circuit described in any one all includes a voltage comparator separately, first triode, second triode and the 3rd triode, voltage comparator described in any one all includes a normal phase input end separately, an inverting input and an output terminal, in any one pin metering circuit, the normal phase input end of voltage comparator is connected with the emitter of the first triode, the output terminal of voltage comparator is connected with the base stage of the second triode and the collector of the 3rd triode by first resistor, the emitter of the emitter of the second triode and the 3rd triode ground connection separately, the normal phase input end of the voltage comparator in any one pin metering circuit is all connected with the pin splicing ear described in separately, the collector of the second triode in all pin metering circuits is all connected on same common port, the collector of the first triode in all pin metering circuits is all connected on first power supply end, the inverting input of the voltage comparator in all pin metering circuits is all connected on second power supply end, described pulse signal treatment circuit comprises first code translator and an OR circuit, the first described code translator comprises that four enable input end and at least two decode results output terminals, decode results output terminal described in any one is all connected with the base stage of the first triode and the base stage of the 3rd triode in pin metering circuit described in one separately, described four enable input end and are connected one by one with four output terminals that comprise in a counter, described OR circuit comprises a first exclusive disjunction circuit and a second exclusive disjunction circuit, the first described exclusive disjunction circuit comprises two first input ends and first output terminal, the second described exclusive disjunction circuit comprises two the second input ends and second output terminal, the output terminal of described pulse producer is connected with second input end of the second exclusive disjunction circuit, another second input end of the second exclusive disjunction circuit is connected with the first output terminal of the first exclusive disjunction circuit, the second output terminal of the second exclusive disjunction circuit is connected with the input end of described counter, described indicating circuit comprises second code translator, the second described code translator comprises two input ends and three output terminals, an input end of the second code translator is connected with an output terminal in counter, another input end of the second code translator is connected with the common port in pin metering circuit, on three output terminals of the second code translator, be connected with separately an indicator elment, first input end in the first exclusive disjunction circuit is connected with the output terminal that is connected with indicator elment described in the second code translator one, another first input end in the first exclusive disjunction circuit is connected with the output terminal that is connected with indicator elment described in another in the second code translator.
Further, in described counter, separately there are two output terminals to be connected with two other input end of the second code translator respectively.
Further, testing circuit includes 2～64 number object pin metering circuits.
Further, described consists NE555 chip forms, the number one pin ground connection of NE555 chip, No. second pin is connected with No. six pin, No. six pin is connected with the positive pole of the 3rd diode, No. seven pin is connected with the positive pole of second diode, the negative pole of the second diode is connected with No. six pin, between the negative pole of anodal and the 3rd diode of the second diode, be provided with the first adjustable resistor, No. four pin of NE555 chip is connected with No. eight pin, this link is connected with power supply, between the negative pole of the first adjustable resistor and the 3rd diode, connect and be provided with second adjustable resistor, the 3rd pin of NE555 chip is connected with its first pin by resistor, between the first pin and the 5th pin, be provided with capacitor, between the first pin and the 6th pin, be also provided with capacitor.
Further, between the second output terminal of the second exclusive disjunction circuit and the input end of counter, be provided with a pulse indication light diode.
Further, between two output terminals in two first input ends and the second code translator in the first exclusive disjunction circuit, be provided with separately a transistor amplifier, output terminal in the second code translator is connected with the base stage of the triode in described transistor amplifier, first input end in the first exclusive disjunction circuit is connected with the collector of the triode in transistor amplifier and is connected to positive source, the grounded emitter of the triode in transistor amplifier.
Further, testing circuit includes 3～64 number object pin metering circuits, and described pin metering circuit is distributed at least two expansion testing circuit plates.
Principle of work of the present utility model is: the pin of electronic product connector to be measured is connected to pin link subgroup, pulse producer adds the electric signal of low-voltage and little electric current on a pin of connector, utilize testing circuit to detect the voltage of all the other pins simultaneously, other pin no-voltage under normal circumstances, occur if any short circuit, measure after voltage, utilized pulse signal treatment circuit and indicating circuit by indicator elment, short-circuit condition to be showed.
The utility model and prior art are compared, and its effect is actively with obvious.The utility model utilizes pin link subgroup to connect the pin of electronic product connector to be measured, on each pin splicing ear, be provided with separately a pin metering circuit that comprises voltage comparator, utilize pulse producer on a pin of connector, to add the electric signal of low-voltage and little electric current, utilize testing circuit to detect the voltage of all the other pins simultaneously, other pin no-voltage under normal circumstances, occur if any short circuit, measure after voltage, utilized pulse signal treatment circuit and indicating circuit by indicator elment, short-circuit condition to be showed.The utility model can Quick Measuring measures between the pin of more than 2 number of electronic product connector whether have short circuit.
Accompanying drawing explanation:
Fig. 1 is the circuit diagram of the device of measuring for short circuit between electronic product connector pin of the present utility model.
Fig. 2 is the schematic diagram of an embodiment of the device of measuring for short circuit between electronic product connector pin of the present utility model.
Fig. 3 is the schematic diagram of measuring for short circuit between electronic product connector pin of the present utility model.
Fig. 4 is the circuit diagram of an embodiment who measures for short circuit between electronic product connector pin of the present utility model.
Embodiment:
Embodiment 1:
As shown in Figure 1, the device of measuring for short circuit between electronic product connector pin of the present utility model, comprise a pin link subgroup 1, a testing circuit 2, an indicating circuit 3, a pulse producer 4 and a pulse signal treatment circuit 5, in described pin link subgroup 1, include the pin splicing ear of more than two number, wherein, the output terminal of described pulse producer 4 is connected with the input end of described testing circuit 2, the output terminal of testing circuit 2 is connected with the input end of described pulse signal treatment circuit 5, testing circuit 2 includes the pin metering circuit of more than two number, pin metering circuit described in any one is connected with the pin splicing ear described in separately, described indicating circuit 3 is connected with the output terminal of pulse signal treatment circuit 5.
As shown in Figure 4, pin metering circuit described in any one all includes a voltage comparator separately, first triode, second triode and the 3rd triode, voltage comparator described in any one all includes a normal phase input end separately, an inverting input and an output terminal, in any one pin metering circuit, the normal phase input end of voltage comparator is connected with the emitter of the first triode, the output terminal of voltage comparator is connected with the base stage of the second triode and the collector of the 3rd triode by first resistor, the emitter of the emitter of the second triode and the 3rd triode ground connection separately, the normal phase input end of the voltage comparator in any one pin metering circuit is all connected with the pin splicing ear described in separately, the collector of the second triode in all pin metering circuits is all connected on same common port, the collector of the first triode in all pin metering circuits is all connected on first power supply end, the inverting input of the voltage comparator in all pin metering circuits is all connected on second power supply end, described pulse signal treatment circuit 5 comprises first code translator and an OR circuit, the first described code translator comprises that four enable input end and at least two decode results output terminals, decode results output terminal described in any one is all connected with the base stage of the first triode and the base stage of the 3rd triode in pin metering circuit described in one separately, described four enable input end and are connected one by one with four output terminals that comprise in a counter, described OR circuit comprises a first exclusive disjunction circuit and a second exclusive disjunction circuit, the first described exclusive disjunction circuit comprises two first input ends and first output terminal, the second described exclusive disjunction circuit comprises two the second input ends and second output terminal, the output terminal of described pulse producer 4 is connected with second input end of the second exclusive disjunction circuit, another second input end of the second exclusive disjunction circuit is connected with the first output terminal of the first exclusive disjunction circuit, the second output terminal of the second exclusive disjunction circuit is connected with the input end of described counter, described indicating circuit 3 comprises second code translator, the second described code translator comprises two input ends and three output terminals, an input end of the second code translator is connected with an output terminal in counter, another input end of the second code translator is connected with the common port in pin metering circuit, on three output terminals of the second code translator, be connected with separately an indicator elment, first input end in the first exclusive disjunction circuit is connected with the output terminal that is connected with indicator elment described in the second code translator one, another first input end in the first exclusive disjunction circuit is connected with the output terminal that is connected with indicator elment described in another in the second code translator.
Further, in described counter, separately there are two output terminals to be connected with two other input end of the second code translator respectively.
Further, testing circuit 2 includes 2～64 number object pin metering circuits.
Further, described pulse producer 4 is made up of NE555 chip, the number one pin ground connection of NE555 chip, No. second pin is connected with No. six pin, No. six pin is connected with the positive pole of the 3rd diode, No. seven pin is connected with the positive pole of second diode, the negative pole of the second diode is connected with No. six pin, between the negative pole of anodal and the 3rd diode of the second diode, be provided with the first adjustable resistor, No. four pin of NE555 chip is connected with No. eight pin, this link is connected with power supply, between the negative pole of the first adjustable resistor and the 3rd diode, connect and be provided with second adjustable resistor, the 3rd pin of NE555 chip is connected with its first pin by resistor, between the first pin and the 5th pin, be provided with capacitor, between the first pin and the 6th pin, be also provided with capacitor.
Further, between the second output terminal of the second exclusive disjunction circuit and the input end of counter, be provided with a pulse indication light diode.
Further, between two output terminals in two first input ends and the second code translator in the first exclusive disjunction circuit, be provided with separately a transistor amplifier, output terminal in the second code translator is connected with the base stage of the triode in described transistor amplifier, first input end in the first exclusive disjunction circuit is connected with the collector of the triode in transistor amplifier and is connected to positive source, the grounded emitter of the triode in transistor amplifier.
As shown in Figure 2, testing circuit 2 includes 3～64 number object pin metering circuits, and described pin metering circuit is distributed at least two expansion testing circuit plates.
As shown in Figure 3, principle of work of the present utility model is: the pin of electronic product connector to be measured is connected to pin link subgroup 1, pulse producer 4 adds the electric signal of low-voltage and little electric current on a pin of connector, utilize testing circuit 2 to detect the voltage of all the other pins simultaneously, other pin no-voltage under normal circumstances, occur if any short circuit, measured after voltage, utilize pulse signal treatment circuit 5 and indicating circuit 3 by indicator elment, short-circuit condition to be showed.
As shown in Figure 1, Figure 2 and Figure 4, in pulse signal treatment circuit, also include pin number option interface 7.Concrete, an output terminal of the first code translator is connected with an input end of counter, the pin number of measurement can be set.For example: only need to measure 8 pins time, will in Fig. 4, be connected with the Q10 as the CD4060 chip of counter as the S9 of the CD4515 chip of the first code translator.
Concrete, in embodiment as shown in Figure 4 of the present utility model, pulse producer 4 is made up of NE555 chip, the number one pin ground connection of NE555, No. second pin is connected with No. six pin, No. six pin is connected with the positive pole of the 3rd diode D3, No. seven pin is connected with the positive pole of the second diode D2, the negative pole of the second diode D2 is connected with No. six pin, between the negative pole of anodal and the 3rd diode D3 of the second diode D2, be provided with the first adjustable resistance RB1, No. four pin of NE555 chip is connected with No. eight pin, this link is connected with+5V voltage, between the negative pole of+5V voltage and the 3rd diode, connect and be provided with the second adjustable resistance RA1 and the first adjustable resistance RB1, the 3rd pin of NE555 is pulse signal output end, this pin is connected with its first pin by the first resistance R L1, between this first pin and the 5th pin, be provided with 0.01 μ f electric capacity, between the first pin and the 6th pin, be provided with 0.1 μ f electric capacity, described pulse signal processing unit comprises 74LS32P or door chip and CD4060 counter chip, described pulse signal output end is connected with No. five pin of described 74LS32P, No. six pin of described 74LS32P is connected with the ride on Bus No. 11 pin of CD4060, the the 4th to No. seven pin of CD4060 forms respectively four square wave output terminal Q1, Q2, Q3 and Q4, described test section comprises that 16 select a decoder chip CD4515, 25 needle connectors, a plurality of triodes and a plurality of voltage comparator LF347N, described Q1, Q2, Q3 and Q4 respectively with No. second of CD4515, No. three, the second ride on Bus No. 11 is connected with the 20 No. two pin, No. four pin to the ride on Bus No. 11 pin and two No. ten pins of the ten No. three pin to the of described CD4515 chip form respectively IO1 to IO16, IO1 is connected with the base stage of the first triode T1 by 4.7K resistance, the collector of the first triode T1 is connected with power end, the number one pin of 25 needle connectors is connected with the emitter of the first triode T1, be connected with the positive input (No. five pin of voltage comparator) of first voltage comparator simultaneously, the negative input (its No. six pin) of first voltage comparator is connected with reference voltage end, the output terminal (its No. seven pin) of voltage comparator is connected with the base stage of the second triode T2 by 4.7K resistance, the grounded emitter of the second triode T2, IO1 is also connected with the base stage of the 3rd triode T3 by 4.7K resistance, the collector of the 3rd triode T3 is connected with the base stage of the second triode T3, the grounded emitter of the 3rd triode T3, the collector of the second triode T2 is connected with common port, the method of attachment of IO2-IO16 is identical with IO1, each IO pin is in requisition for three triodes and a voltage comparator, as shown in Figure 3, described indicating section comprises that two four select a decoder chip CD4556 and a plurality of pilot lamp, pilot lamp comprises red LED lamp DS2, yellow LED lamp DS3 and green LED lamp DS4, three described pilot lamp DS2, the positive pole of DS3 and DS4 is connected with+5V power supply, the negative pole of described red LED is connected with the ten No. two pin of CD4556 by 4.7K resistance, the negative pole of yellow led is connected with the ride on Bus No. 11 pin of CD4556 by 4.7K resistance, the negative pole of green LED is connected with No. ten pin of CD4556 by 4.7K resistance, the ten No. five pin of described CD4556 is connected with its number one pin, the number one pin of described CD4556 is connected with switch, the number one pin of described CD4556 is switched and is connected with+5V and ground by change-over switch and resistance.
The ten No. four pin of described CD4060 chip is connected with No. second pin of CD4556, the ten No. three pin of CD4060 is connected with No. three pin of CD4556, the the 4th, the 5th, the 6th of described CD4556 is connected with described expansion structure with the 7th pin, and the Enable Pin of expansion interface plate is connected described expansion interface plate is selected with the 4th to No. seven pin of described CD4556.
Further, the ride on Bus No. 11 pin of CD4060 by 4.7K resistance and+be provided with pulse indication LED lamp DS1 between 5V voltage.
Claims (8)
1. a device of measuring for short circuit between electronic product connector pin, comprise a pin link subgroup, a testing circuit, an indicating circuit, a pulse producer and a pulse signal treatment circuit, in described pin link subgroup, include the pin splicing ear of more than two number, it is characterized in that: the output terminal of described pulse producer is connected with the input end of described testing circuit, the output terminal of testing circuit is connected with the input end of described pulse signal treatment circuit, testing circuit includes the pin metering circuit of more than two number, pin metering circuit described in any one is connected with the pin splicing ear described in separately, described indicating circuit is connected with the output terminal of pulse signal treatment circuit.
2. the device of measuring for short circuit between electronic product connector pin as claimed in claim 1, it is characterized in that: the pin metering circuit described in any one all includes a voltage comparator separately, first triode, second triode and the 3rd triode, voltage comparator described in any one all includes a normal phase input end separately, an inverting input and an output terminal, in any one pin metering circuit, the normal phase input end of voltage comparator is connected with the emitter of the first triode, the output terminal of voltage comparator is connected with the base stage of the second triode and the collector of the 3rd triode by first resistor, the emitter of the emitter of the second triode and the 3rd triode ground connection separately, the normal phase input end of the voltage comparator in any one pin metering circuit is all connected with the pin splicing ear described in separately, the collector of the second triode in all pin metering circuits is all connected on same common port, the collector of the first triode in all pin metering circuits is all connected on first power supply end, the inverting input of the voltage comparator in all pin metering circuits is all connected on second power supply end, described pulse signal treatment circuit comprises first code translator and an OR circuit, the first described code translator comprises that four enable input end and at least two decode results output terminals, decode results output terminal described in any one is all connected with the base stage of the first triode and the base stage of the 3rd triode in pin metering circuit described in one separately, described four enable input end and are connected one by one with four output terminals that comprise in a counter, described OR circuit comprises a first exclusive disjunction circuit and a second exclusive disjunction circuit, the first described exclusive disjunction circuit comprises two first input ends and first output terminal, the second described exclusive disjunction circuit comprises two the second input ends and second output terminal, the output terminal of described pulse producer is connected with second input end of the second exclusive disjunction circuit, another second input end of the second exclusive disjunction circuit is connected with the first output terminal of the first exclusive disjunction circuit, the second output terminal of the second exclusive disjunction circuit is connected with the input end of described counter, described indicating circuit comprises second code translator, the second described code translator comprises two input ends and three output terminals, an input end of the second code translator is connected with an output terminal in counter, another input end of the second code translator is connected with the common port in pin metering circuit, on three output terminals of the second code translator, be connected with separately an indicator elment, first input end in the first exclusive disjunction circuit is connected with the output terminal that is connected with indicator elment described in the second code translator one, another first input end in the first exclusive disjunction circuit is connected with the output terminal that is connected with indicator elment described in another in the second code translator.
3. the device of measuring for short circuit between electronic product connector pin as claimed in claim 2, is characterized in that: in described counter, separately have two output terminals to be connected with two other input end of the second code translator respectively.
4. the device of measuring for short circuit between electronic product connector pin as claimed in claim 1, is characterized in that: testing circuit includes 2～64 number object pin metering circuits.
5. the device of measuring for short circuit between electronic product connector pin as claimed in claim 2, it is characterized in that: described consists NE555 chip forms, the number one pin ground connection of NE555 chip, No. second pin is connected with No. six pin, No. six pin is connected with the positive pole of the 3rd diode, No. seven pin is connected with the positive pole of second diode, the negative pole of the second diode is connected with No. six pin, between the negative pole of anodal and the 3rd diode of the second diode, be provided with the first adjustable resistor, No. four pin of NE555 chip is connected with No. eight pin, this link is connected with power supply, between the negative pole of the first adjustable resistor and the 3rd diode, connect and be provided with second adjustable resistor, the 3rd pin of NE555 chip is connected with its first pin by resistor, between the first pin and the 5th pin, be provided with capacitor, between the first pin and the 6th pin, be also provided with capacitor.
6. the device of measuring for short circuit between electronic product connector pin as claimed in claim 2, is characterized in that: between the second output terminal of the second exclusive disjunction circuit and the input end of counter, be provided with a pulse indication light diode.
7. the device of measuring for short circuit between electronic product connector pin as claimed in claim 2, it is characterized in that: between two output terminals in two first input ends and the second code translator in the first exclusive disjunction circuit, be provided with separately a transistor amplifier, output terminal in the second code translator is connected with the base stage of the triode in described transistor amplifier, first input end in the first exclusive disjunction circuit is connected with the collector of the triode in transistor amplifier and is connected to positive source, the grounded emitter of the triode in transistor amplifier.
8. the device of measuring for short circuit between electronic product connector pin as claimed in claim 1, it is characterized in that: testing circuit includes 3～64 number object pin metering circuits, described pin metering circuit is distributed at least two expansion testing circuit plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320657287.6U CN203606449U (en) | 2013-10-23 | 2013-10-23 | Device used for short circuit measurement between pins of connector of electronic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320657287.6U CN203606449U (en) | 2013-10-23 | 2013-10-23 | Device used for short circuit measurement between pins of connector of electronic product |
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| Publication Number | Publication Date |
|---|---|
| CN203606449U true CN203606449U (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320657287.6U Expired - Lifetime CN203606449U (en) | 2013-10-23 | 2013-10-23 | Device used for short circuit measurement between pins of connector of electronic product |
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| CN (1) | CN203606449U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108717161A (en) * | 2018-05-31 | 2018-10-30 | 昌辉汽车电器（黄山）股份公司 | A kind of vehicle switch test device and test method |
| WO2018201763A1 (en) * | 2017-05-05 | 2018-11-08 | 中兴通讯股份有限公司 | Test method for connector, device and storage medium |
| CN109164373A (en) * | 2018-09-12 | 2019-01-08 | 常州同惠电子股份有限公司 | A method of for testing wire rod on-off |
| CN109490699A (en) * | 2017-09-11 | 2019-03-19 | 三星电子株式会社 | For detecting the electronic device and method of the foreign object on connector |
| CN109633362A (en) * | 2019-01-30 | 2019-04-16 | 努比亚技术有限公司 | Intelligent terminal designs circuit, intelligent terminal and intelligent terminal method for detecting short circuit |
| CN109901002A (en) * | 2017-12-08 | 2019-06-18 | 英业达科技有限公司 | The pin connecting test system and method for connector |
| CN110031742A (en) * | 2018-01-12 | 2019-07-19 | 神讯电脑(昆山)有限公司 | Wiring board connects tin detection circuit |
| CN110108973A (en) * | 2019-05-07 | 2019-08-09 | 武汉辉天同康科技有限公司 | A kind of bonder terminal test macro |
| CN111679222A (en) * | 2020-05-15 | 2020-09-18 | 深圳市崧盛电子股份有限公司 | Detection circuit for short circuit between metal packaging tube and metal radiating fin and short circuit detection device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018201763A1 (en) * | 2017-05-05 | 2018-11-08 | 中兴通讯股份有限公司 | Test method for connector, device and storage medium |
| CN109490699A (en) * | 2017-09-11 | 2019-03-19 | 三星电子株式会社 | For detecting the electronic device and method of the foreign object on connector |
| CN109490699B (en) * | 2017-09-11 | 2022-08-23 | 三星电子株式会社 | Electronic device and method for detecting foreign object on connector |
| CN109901002A (en) * | 2017-12-08 | 2019-06-18 | 英业达科技有限公司 | The pin connecting test system and method for connector |
| CN110031742A (en) * | 2018-01-12 | 2019-07-19 | 神讯电脑(昆山)有限公司 | Wiring board connects tin detection circuit |
| CN110031742B (en) * | 2018-01-12 | 2022-07-15 | 神讯电脑(昆山)有限公司 | Circuit board tin connection detection circuit |
| CN108717161A (en) * | 2018-05-31 | 2018-10-30 | 昌辉汽车电器（黄山）股份公司 | A kind of vehicle switch test device and test method |
| CN109164373A (en) * | 2018-09-12 | 2019-01-08 | 常州同惠电子股份有限公司 | A method of for testing wire rod on-off |
| CN109164373B (en) * | 2018-09-12 | 2020-12-25 | 常州同惠电子股份有限公司 | Method for testing on-off of wire |
| CN109633362A (en) * | 2019-01-30 | 2019-04-16 | 努比亚技术有限公司 | Intelligent terminal designs circuit, intelligent terminal and intelligent terminal method for detecting short circuit |
| CN110108973A (en) * | 2019-05-07 | 2019-08-09 | 武汉辉天同康科技有限公司 | A kind of bonder terminal test macro |
| CN111679222A (en) * | 2020-05-15 | 2020-09-18 | 深圳市崧盛电子股份有限公司 | Detection circuit for short circuit between metal packaging tube and metal radiating fin and short circuit detection device |
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