CN201955774U - Computer switching power supply test protection circuit - Google Patents
Computer switching power supply test protection circuit Download PDFInfo
- Publication number
- CN201955774U CN201955774U CN201020634923XU CN201020634923U CN201955774U CN 201955774 U CN201955774 U CN 201955774U CN 201020634923X U CN201020634923X U CN 201020634923XU CN 201020634923 U CN201020634923 U CN 201020634923U CN 201955774 U CN201955774 U CN 201955774U
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- CN
- China
- Prior art keywords
- power supply
- switching power
- computer switching
- bulb
- pole switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a computer switching power supply test protection circuit, which solves the problem of burst that may occur in computer switching power supply test process. The circuit comprises a protective single blade switch, a short circuit single blade switch, a bulb and a computer switching power supply; the protective single blade switch is in serial connection with the bulb, then is in parallel connection with the short circuit single blade switch, finally is in serial connection in an AC (alternating current) input circuit together with the computer switching power supply. The utility model can protect the safeties of instruments, elements and personnel; saves cost and time, improves work efficiency; at the same time, has the advantages of simple installation and wiring, and convenient operation; and achieves a high practical using value.
Description
Technical field
The utility model relates to a kind of test holding circuit of computer switching power supply.
Background technology
During former test to computer switching power supply, all be directly 230V or 115V voltage to be directly inputted in the computer switching power supply, if there is short circuit the high pressure importation of power supply, element is bad, element is wrong, will explode instrument insurance immediately or blow up instrument, simultaneously also fried at sixes and sevens of the higher-pressure region circuit of computer switching power supply.
Summary of the invention
The problems referred to above that the purpose of this utility model exists when being at the test of present computer switching power supply provide a kind of instrument and element, easy to operate protected, and also strengthen the computer switching power supply test holding circuit of tester's safety simultaneously.
The purpose of this utility model is achieved in that the utility model comprises protection single-pole switch, short circuit single-pole switch, bulb and computer switching power supply; in parallel after described protection single-pole switch is connected with bulb with the short circuit single-pole switch, be connected in the ac input circuit with computer switching power supply again.
As preferred version, the rated power of described bulb is 60W, and operating voltage is 220V.
Technique effect of the present utility model is: the utility model is by the test mode before changing; before the input of computer switching power supply, increase so circuit; can improve test because of the people is bad for short circuit, element, element is with unnecessary blast and instrument damage, component loss etc. that mistake etc. causes, really play the effect of protecting instrument, element and personal security, saving cost, saving time, improve operating efficiency.In addition, it is simple, easy to operate that the utility model is installed wiring, has actual use value.
Description of drawings
Fig. 1 is the circuit theory diagrams of embodiment.
Embodiment
Referring to Fig. 1; present embodiment comprises that protection single-pole switch K1, short circuit single-pole switch K2, rated power are bulb W and the computer switching power supply PSU of 220V for the 60W operating voltage; the live wire of the termination alternating voltage of protection single-pole switch K1; it is in parallel after the other end is connected with bulb W with short circuit single-pole switch K2; be connected in the ac input circuit with computer switching power supply PSU again; the L end of computer switching power supply PSU is connected the zero line of the N termination alternating voltage of computer switching power supply PSU with bulb W with short circuit single-pole switch K2.N represents the zero line of alternating voltage among Fig. 1, and L represents the live wire of alternating voltage, and E represents the ground wire of alternating voltage.
The course of work of present embodiment is as follows: protect single-pole switch K1, short circuit single-pole switch K2 all to be in off-state before the test.During test, computer switching power supply PSU is in light condition, protection single-pole switch K1 closure, short circuit single-pole switch K2 disconnects, normal bulb W is bright when once extinguishing again immediately when test, disconnect protection single-pole switch K1, closed short circuit single-pole switch K2 this moment, computer switching power supply PSU continues to load test; PSU is in light condition when computer switching power supply; protection single-pole switch K1 is in closure state; short circuit single-pole switch K2 is in off-state; when test bulb W length is bright; should disconnect protection single-pole switch K1 this moment immediately, stop test, illustrate that computer switching power supply PSU has fault; test as stated above again after finding out failure cause, so just can reduce the element blast that computer switching power supply PSU causes because of test.
Claims (2)
1. a computer switching power supply is tested holding circuit; it is characterized in that: comprise protection single-pole switch, short circuit single-pole switch, bulb and computer switching power supply; in parallel after described protection single-pole switch is connected with bulb with the short circuit single-pole switch, be connected in the ac input circuit with computer switching power supply again.
2. computer switching power supply test holding circuit according to claim 1, it is characterized in that: the rated power of described bulb is 60W, operating voltage is 220V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020634923XU CN201955774U (en) | 2010-11-29 | 2010-11-29 | Computer switching power supply test protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020634923XU CN201955774U (en) | 2010-11-29 | 2010-11-29 | Computer switching power supply test protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201955774U true CN201955774U (en) | 2011-08-31 |
Family
ID=44499880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020634923XU Expired - Fee Related CN201955774U (en) | 2010-11-29 | 2010-11-29 | Computer switching power supply test protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201955774U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107783004A (en) * | 2016-08-30 | 2018-03-09 | 迈普通信技术股份有限公司 | Switching Power Supply product input short-circuit test device and method |
| CN110146829A (en) * | 2019-06-03 | 2019-08-20 | 山东华泰纸业股份有限公司 | A kind of direct-current switch power supply fault diagnosis easily-testing instrument and test method |
-
2010
- 2010-11-29 CN CN201020634923XU patent/CN201955774U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107783004A (en) * | 2016-08-30 | 2018-03-09 | 迈普通信技术股份有限公司 | Switching Power Supply product input short-circuit test device and method |
| CN110146829A (en) * | 2019-06-03 | 2019-08-20 | 山东华泰纸业股份有限公司 | A kind of direct-current switch power supply fault diagnosis easily-testing instrument and test method |
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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: 20110831 Termination date: 20121129 |