CN204882841U - Power automatic testing control circuit - Google Patents
Power automatic testing control circuit Download PDFInfo
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- CN204882841U CN204882841U CN201520588361.2U CN201520588361U CN204882841U CN 204882841 U CN204882841 U CN 204882841U CN 201520588361 U CN201520588361 U CN 201520588361U CN 204882841 U CN204882841 U CN 204882841U
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Abstract
The utility model discloses a power automatic testing control circuit, including the detection module who detects alternating -current measurement adapter output voltage, output control signal was effective when detection module was greater than 300Vac in settlement alternating -current measurement adapter output voltage scope, still include boost circuit and voltage switching circuit, boost circuit is less than the transformer T1 of the secondary winding number of turns for the primary coil number of turns, the primary coil both ends of inserting transformer T1 are respectively held with input voltage live wire end and input voltage zero line to the voltage switching circuit when detection module output control signal is effective, output voltage's zero line end and output voltage's live wire end insert transformer T1's secondary winding both ends respectively, the voltage switching circuit is held the input voltage live wire and is held with output voltage's zero line with output voltage's live wire end respectively with input voltage zero line end when detection module output control signal is invalid. The utility model discloses the circuit is simple, and control is convenient, and the reaction rate is fast, and the reliability is high.
Description
Technical field
The utility model relates to power supply automatic detecting control circuit
Background technology
In the power supply manufacturing enterprise of scale, in order to increase work efficiency, and reduce human error, for the detection of the power supply product produced, usually adopt Auto-Test System to test.
The automatic test approach that current domestic mainstream bulk power supply producer adopts has two kinds: one to be adopt by Taiwan or the domestic custom-designed power detecting system of instrument manufacturing producer usually, for the power detecting system that these are general, test event routinely, can complete by proper testing usually.But because communication power supply market is huge, product is various, different clients is different for the requirement of product, test emphasis is also different, and these general power detecting systems, because the function of instrument and equipment itself limits, technical limitation and the comprehensive consideration for cost, thus the key project that result in some products cannot be tested.Therefore the second way is exactly the Auto-Test System of producer's indoor design coupling, carries out the properties of product test customized for different product.
In communication power supply product, primary power source (AC turns DC) market at least accounting more than 80%, and present primary power source requires to be input as wide-voltage range input to require that primary power source normally can both carry out work in 90Vac to 290Vac scope usually.So for the communication power supply that this wide-voltage range inputs; usual input over-voltage protection point can reach 300Vac to 315Vac; and the AC power ATE (automatic test equipment) output voltage of main flow is generally the highest 300Vac at present, the Chroma6000 test macro comprising power supply industry universal also cannot test this project.And AC electric source testing apparatus expensive, if use other high voltage instead, powerful testing power supply, not only cost rolls up, and bulky heaviness, is not easy to mobile operation.
Utility model content
The Auto-Test System of main flow adopts maximum output voltage to be that the AC power of 300Vac is powered usually in the market; the Width funtion primary power source that can not meet required by communication power supply industry is tested about input overvoltage protection, and input overvoltage recovers the test request of the key sub-tests such as test.And the testing tool that can meet test request is generally the test macro of high-power grade, system unit price exceeds more than 50% than original system.The utility model provides a kind of power supply automatic detecting control circuit, when setting alternating-current measurement electric power output voltage scope and being greater than more than 300Vac, adopt a step-up transformer that more than 300Vac is brought up in output to test again, when setting alternating-current measurement electric power output voltage scope and being less than 300Vac, step-up transformer is inoperative.
The utility model is realize the technical scheme that above technical requirement adopts to be: a kind of power supply automatic detecting control circuit, comprise the detection module detecting alternating-current measurement electric power output voltage, it is effective that described detection module exports control signal when setting alternating-current measurement electric power output voltage scope and being greater than 300Vac; Also comprise booster circuit and voltage commutation circuit; Described booster circuit is the transformer T1 that the primary coil number of turn is less than the secondary coil number of turn; Described voltage commutation circuit is when described detection module output control signal is effective, input voltage live wire end and input voltage zero line side are accessed respectively the primary coil two ends of described transformer T1, the zero line side of output voltage and the live wire end of output voltage access the secondary coil two ends of described transformer T1 respectively; Input voltage live wire end, when described detection module output control signal is invalid, is directly connected with the zero line side of output voltage with the live wire end of output voltage with input voltage zero line side by described voltage commutation circuit respectively.
The utility model circuit is simple, and it is convenient to control, and reaction velocity is fast, and reliability is high.
Voltage commutation circuit application of the present utility model is a lot, is below the voltage commutation circuit mode of priority in the utility model:
Described voltage commutation circuit comprises triode Q1, relay K 1, relay K 2, divider resistance R1, divider resistance R2, current-limiting resistance R3; Described triode Q1 is NPN type triode, its base stage connects the output of described detection module by divider resistance R1, between the base stage that divider resistance R2 is connected to triode Q1 and emitter, the collector of triode Q1 connects high level respectively by the coil of relay K 1 and relay K 2; Described current-limiting resistance R3 is arranged between the collector of triode Q1 and the coil of relay K 1 and relay K 2.Normally closed contact one end of described relay K 1 is connected with the zero line side Nin of input voltage, and the other end is connected with the zero line side Nout of output voltage, and the normally opened contact of relay K 1 is connected to the primary coil of transformer T1; Normally closed contact one end of relay K 2 is connected with the live wire end Lin of input voltage, and the other end is connected with the live wire end Lout of output voltage, and the normally opened contact of described relay K 2 is connected to the secondary coil of transformer T1.
Compared with market mainstream Auto-Test System, the utility model has the following advantages:
1, function strengthens.
Switch because the utility model have employed relay, the mode of operation of transformer boost, solve the primary power source that common test system can not test wide-voltage range input, about the key parameter test problem of input overvoltage protection with input overvoltage restoration project.
2, economical, cost is low.
Due to application of the present utility model, Auto-Test System can be achieved on the basis of low cost high-power, the test function that high voltage test system could realize, common test system often overlaps price about 200,000, and realize the high-power of said function, it is at least high over half that high voltage test system often overlaps price, saves production test cost in a large number.
3, simple, practical and reliable.
The utility model is simple and convenient, and device is few, and product is reliable, practical.
Below with reference to drawings and Examples, the utility model is described in detail.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment schematic diagram.
Embodiment
As shown in Figure 1, the present embodiment is a communication power supply power module ATS, and whole Auto-Test System comprises hardware configuration and software control.The Chroma6530 that this Auto-Test System adopts power supply industry the most frequently used as alternating-current measurement power supply, this power supply maximum output voltage 300Vac, maximum output current 30A, peak power 3000VA.Because communication power supply product is mainly the communication power supply product requiring wide range input voltage, therefore in this test macro, adopt a kind of power supply automatic detecting control circuit of utility model circuit, as shown in Figure 1, to meet test request.
As shown in Figure 1, the present embodiment comprises the detection module and voltage commutation circuit two parts that detect alternating-current measurement electric power output voltage, it is effective that detection module (not drawing in FIG) exports control signal Scon when setting alternating-current measurement electric power output voltage scope and being greater than 300Vac, namely high level.Such detection module, a lot of on the market at present, be mostly intelligent object, when detecting that setting alternating-current measurement electric power output voltage scope exports a high level when being greater than 300Vac.
In the present embodiment, the control signal control voltage commutation circuit produced by detection module is a high level when what produce, namely during useful signal, voltage commutation circuit will be outputted to booster circuit, make the highest output be that the voltage of 300Vac rises to satisfactory voltage.Commutation circuit is a lot of in the market, the commutation circuit that what the present embodiment adopted is as shown in Figure 1.
Voltage commutation circuit comprises control triode Q1, divider resistance R1, divider resistance R2, current-limiting resistance R3.Control the base stage of triode Q1 i.e. B pole to connect detection module by current-limiting resistance R1 and export the base stage of control signal Scon, triode Q1 i.e. B pole simultaneously by divider resistance R2 ground connection; The collector i.e. the C pole that control triode are connected with coil pin 4 pin of relay by current-limiting resistance R3; Control emitter i.e. the E pole ground connection of triode Q1.Normally closed contact one end of relay K 1 is connected with the zero line side Nin of input voltage, and the other end is connected with the zero line side Nout of output voltage, and the normally opened contact of relay K 1 is connected to the primary coil of transformer T1; Normally closed contact one end of relay K 2 is connected with the live wire end Lin of input voltage, and the other end is connected with the live wire end Lout of output voltage, and the normally opened contact of relay K 2 is connected to the secondary coil of transformer T1.
A kind of power supply automatic detecting control circuit in embodiment, its control principle is described below:
In the test procedure of Auto-Test System, when setting alternating-current measurement electric power output voltage scope and being less than 300Vac, the control signal Scon output low level that detection module exports, through divider resistance R1, after divider resistance R2, base stage i.e. the B pole of triode Q1 are low-voltages, and therefore the triode Q1 of NPN type ends, thus relay K 1 and relay K 2 all not conductings.Alternating voltage one end Lin that so testing power supply exports directly is connected with ac output voltage Lout with 5 pin through normally closed contact 1 pin of relay K 2, and other end Nin is directly connected with ac output voltage Nout with 5 pin through normally closed contact 1 pin of relay K 1.Thus the test voltage of communication power supply product is directly exported by alternating-current measurement power supply, and step-up transformer T1 does not work.
When setting alternating-current measurement electric power output voltage scope and being greater than more than 300Vac, the control signal Scon that detection module produces exports high level, after divider resistance R1 and divider resistance R2, the triode Q1 conducting of NPN type, thus relay K 1 and relay K 2 all conductings.After alternating voltage one end Lin that so testing power supply exports passes through transformer T1 former limit winding 1 pin and 2 pin, the alternating voltage other end Nin that testing power supply exports is connected to again through normally opened contact 2 pin of relay K 1 and 1 pin, transformer T1 carries out work due to conducting, transformer T1 secondary 3 pin and 4 pin export the voltage after boosting, 3 pin of transformer T1 are directly connected with ac output voltage one end Nout, and 4 pin of transformer T1 are connected with the other end Lout of ac output voltage with 1 pin by normally opened contact 2 pin of relay K 2.Thus the test voltage of communication power supply product have passed after step-up transformer T1 converts and exports, and improves power supply test output voltage, meet the input overvoltage protection of test communications power supply product and the test request of input overvoltage restorability index.
The former secondary coil ratio of step-up transformer adopted is 1:1.2, namely maximumly ac output voltage can be raised 1.2 times, can meet like this and exchange maximum supply voltage requirement, under any circumstance, can not damage test products because supply voltage is too high simultaneously.
When testing more than 300Vac AC power output voltage, according to ratio, actual output voltage is removed 1.2 times in a program and (export 315Vac as arranged, be 262.5Vac after so removing 1.2 by program), namely during test request output voltage 315Vac, it is 262.5Vac that test procedure only need arrange alternating-current measurement electric power output voltage, test procedure control signal (Scon) exports high level simultaneously, so by after step-up transformer (T1) boosting, thus the actual test voltage obtained reaches the 315Vac of requirement.
In sum, a kind of power supply automatic detecting control circuit of the utility model, by above embodiment, achieves the test request of power module ATS input overvoltage performance index parameter, reaches the control object of the utility model circuit.
Claims (4)
1. a power supply automatic detecting control circuit, comprises the detection module detecting alternating-current measurement electric power output voltage, and it is effective that described detection module exports control signal when setting alternating-current measurement electric power output voltage scope and being greater than 300Vac; It is characterized in that: also comprise booster circuit and voltage commutation circuit; Described booster circuit is the transformer T1 that the primary coil number of turn is less than the secondary coil number of turn; Described voltage commutation circuit is when described detection module output control signal is effective, input voltage live wire end (Lin) and input voltage zero line side (Nin) are accessed respectively the primary coil two ends of described transformer T1, the zero line side (Nout) of output voltage and the live wire end (Lout) of output voltage access the secondary coil two ends of described transformer T1 respectively; Input voltage live wire end (Lin), when described detection module output control signal is invalid, is directly connected with the zero line side (Nout) of output voltage with the live wire end (Lout) of output voltage with input voltage zero line side (Nin) by described voltage commutation circuit respectively.
2. power supply automatic detecting control circuit according to claim 1, is characterized in that: described voltage commutation circuit comprises triode Q1, relay K 1, relay K 2, divider resistance R1, divider resistance R2;
Described triode Q1 is NPN type triode, its base stage connects the output of described detection module by divider resistance R1, between the base stage that divider resistance R2 is connected to triode Q1 and emitter, the collector of triode Q1 connects high level respectively by the coil of relay K 1 and relay K 2;
Normally closed contact one end of described relay K 1 is connected with the zero line side (Nin) of input voltage, and the other end is connected with the zero line side (Nout) of output voltage, and the normally opened contact of described relay K 1 is connected to the primary coil of transformer T1; Normally closed contact one end of described relay K 2 is connected with the live wire end (Lin) of input voltage, and the other end is connected with the live wire end (Lout) of output voltage, and the normally opened contact of described relay K 2 is connected to the secondary coil of transformer T1.
3. power supply automatic detecting control circuit according to claim 2, is characterized in that: also comprise current-limiting resistance R3, described current-limiting resistance R3 is arranged between the collector of triode Q1 and the coil of relay K 1 and relay K 2.
4. the power supply automatic detecting control circuit according to claim 1 or 2 or 3, is characterized in that: the former secondary coil ratio of described transformer T1 is 1:1.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520588361.2U CN204882841U (en) | 2015-08-07 | 2015-08-07 | Power automatic testing control circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520588361.2U CN204882841U (en) | 2015-08-07 | 2015-08-07 | Power automatic testing control circuit |
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| CN204882841U true CN204882841U (en) | 2015-12-16 |
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| CN201520588361.2U Active CN204882841U (en) | 2015-08-07 | 2015-08-07 | Power automatic testing control circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112054678A (en) * | 2020-08-28 | 2020-12-08 | 苏州浪潮智能科技有限公司 | System and method for optimizing server power supply based on input voltage |
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2015
- 2015-08-07 CN CN201520588361.2U patent/CN204882841U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112054678A (en) * | 2020-08-28 | 2020-12-08 | 苏州浪潮智能科技有限公司 | System and method for optimizing server power supply based on input voltage |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 518000 Floors 1-3 and 1-5 of Block A, Block B2, Jinweiyuan Industrial Plant, Longshan District, Pingshan New District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Gold Power Technology Co., Ltd. Address before: 518000 Shenzhen, Guangdong, Pingshan new industrial zone, poly dragon hill area Jinwei Industrial Zone A 1 floor. Patentee before: Shenzhen Gold Power Technology Co., Ltd. |
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| CP02 | Change in the address of a patent holder |