CN204258622U - The aging burn-in device of power supply adaptor - Google Patents
The aging burn-in device of power supply adaptor Download PDFInfo
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- CN204258622U CN204258622U CN201420807332.6U CN201420807332U CN204258622U CN 204258622 U CN204258622 U CN 204258622U CN 201420807332 U CN201420807332 U CN 201420807332U CN 204258622 U CN204258622 U CN 204258622U
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- power supply
- aging
- supply adaptor
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Abstract
The utility model discloses the aging burn-in device of a kind of power supply adaptor, the converting electric energy that power supply to be aging exports is transported to storage capacitor by the DC-DC converter controlled by input current, the electric energy superposition carried by rectifier bridge rectification with electrical network, and then deliver to the input of power supply to be aging.The utility model exports electrical network to without the need to electric energy is carried out inversion, only need one-stage transfor-mation can realize electric energy to reclaim, enormously simplify circuit system, improve its reliability and reduce cost, electric energy organic efficiency is also improved preferably simultaneously, achieve recycling of electric energy, realize energy-saving and emission-reduction better.
Description
Technical field
The utility model relates to the aging burn-in device of a kind of power supply adaptor, belongs to technical field of electronic equipment.
Background technology
The rule in initial stage and latter stage is all occurred according to product bug major part, for improving product reliability, a large amount of electronic products all will carry out burn-in test before dispatching from the factory, so-called burn-in test is by electronic product continuous operation a period of time, and power supply adaptor is a kind of electronic equipment providing power supply, when carrying out aging to it its load be generally when simulating its work with resistance with load, therefore electric energy a large amount of in ageing process is dissipated on resistance, thus is directed at the loss of the energy.For this problem, market occurs the aging equipment of many electric energy feedback types is to replace traditional resistance-type aging equipment.Feed-back type electronic load is exactly the electronic load not producing remarkable hear rate.Because its electric energy is not converted into heat, but is converted into alternating current and send " returning " to arrive on electrical network, therefore it only produces little heat, thus has saved a large amount of electric energy.Direct current is become interchange send into electrical network again because completing by the feed-back type device of prior art, therefore system is very complicated, and cost is also higher, and adopts 2 stage converter to cause total conversion efficiency and not fully up to expectations, is very restricted on applying.
Utility model content
The purpose of this utility model is to provide a kind of power supply adaptor aging burn-in device, a kind of electric energy self-loopa without the need to reversals adds the aging burn-in device of external electrical network subsidy power supply, it is put by the controlled DC dc converter of input current and current signal sampling control circuit composition DC conversion shape, the output electric energy of power supply adaptor to be aging is directly delivered to after conversion the input of device to be aging, the part electric energy superposition that this electric energy and electrical network are brought by rectifier bridge, by delivering to the input of power supply adaptor to be aging after the balanced action of storage capacitor again, thus realize the recycle and reuse of electric energy.
The purpose of this utility model is achieved by the following technical programs:
The aging burn-in device of a kind of power supply adaptor, comprises input ac power Vac, rectifier bridge BD 1, storage capacitor C1 2, multiple power supply adaptor ADT1 to ADTn to be aging, multiple diode D1 to Dn, storage capacitor C2 5, current sampling resistor R1 6, input electric cur-rent measure compares amplifying circuit 7, DC dc converter 8, isolating diode D9, described input ac power Vac connects the input AC pin of rectifier bridge BD1, the output cathode V+ of rectifier bridge BD1 holds be connected with the positive pole of storage capacitor C1 2, the negative electrode of isolating diode D 9, the Vin-1 of power supply adaptor ADT1 to ADTn to be aging simultaneously, the anode of isolating diode D 9 and the output cathode Vo ' of DC dc converter 8+be connected, the output negative pole V-of rectifier bridge BD1 is connected with another input Vin-2 of the negative pole of storage capacitor C1 2 and power supply adaptor ADT1 to ADTn to be aging, the cathode output end Vo1+ of power supply adaptor ADT1 to be aging is connected with the input Va of the positive pole of storage capacitor C2 5 and DC dc converter 8, the cathode output end Vol-of power supply adaptor ADT1 to be aging is connected with ADT2 positive pole Vo2+, the positive pole Vo3+ of negative pole Vo2-and the ADT3 of ADT2 is connected, rule is until the negative pole Vo (n-1)-be connected with the positive pole Von+ of ADTn of ADTn-1 according to this, the cathode output end Von-of power supply adaptor ADTn to be aging is connected with one end of the negative pole of storage capacitor C2 5 and current sampling resistor R1 6, described multiple diode D1 to Dn is just being connected across corresponding power supply adaptor ADT1 to ADTn to be aging respectively, between cathode output end, diode cathode connects the cathode output end of power supply adaptor, diode cathode connects the cathode output end of power supply adaptor, the input that the other end of current sampling resistor R1 6 compares amplifying circuit 7 with the input Vb of DC dc converter DC/DC (8) and input electric cur-rent measure is connected, the control end Vc of output and DC dc converter 8 that described input electric cur-rent measure compares amplifying circuit 7 is connected, the output negative pole Vo ' of DC dc converter 8-, the negative pole of negative pole V-that rectifier bridge BD1 exports and storage capacitor C1 2 is connected with Gnd2.
The purpose of this utility model can also be realized further by following technical measures:
The aging burn-in device of a kind of power supply adaptor, described input electric cur-rent measure compares amplifying circuit 7 and comprises comparison amplifier M, resistance R2, resistance R3, resistance R4, described resistance R2 mono-termination current sampling resistor R1 6, the positive input of another termination comparison amplifier M of resistance R2, the one termination reference voltage Vref of described resistance R3, the reverse input end of another termination comparison amplifier M, the reverse input end of the one termination comparison amplifier M of described resistance R4, the output of another termination comparison amplifier M, the control end Vc of the output termination DC dc converter 8 of described comparison amplifier M.
The aging burn-in device of a kind of power supply adaptor, the quantity of described power supply adaptor to be aging is between 1 to 30.
The aging burn-in device of a kind of power supply adaptor, the model of described comparison amplifier M is LM324.
The aging burn-in device of a kind of power supply adaptor, described DC dc converter 8 is PWM type.
Compared with prior art, the beneficial effects of the utility model are: the converting electric energy that power supply to be aging exports is transported to storage capacitor by the DC-DC converter controlled by input current, the electric energy superposition carried by rectifier bridge rectification with electrical network, and then deliver to the input of power supply to be aging.The utility model exports electrical network to without the need to electric energy is carried out inversion, only need one-stage transfor-mation can realize electric energy to reclaim, enormously simplify circuit system, improve its reliability and reduce cost, electric energy organic efficiency is also improved preferably simultaneously, achieve recycling of electric energy, realize energy-saving and emission-reduction better.
Accompanying drawing explanation
Fig. 1 is circuit diagram of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, the aging burn-in device of power supply adaptor, comprises input ac power Vac, rectifier bridge BD1, storage capacitor C1 2, multiple power supply adaptor ADT1 to ADTn (quantity is between 1 to 30) to be aging, multiple diode D1 to Dn, storage capacitor C2 5, current sampling resistor R1 6, input electric cur-rent measure compares amplifying circuit 7, DC dc converter 8, isolating diode D9, described input ac power Vac connects the input AC pin of rectifier bridge BD1, the output cathode V+ of rectifier bridge BD1 holds be connected with the positive pole of storage capacitor C1 2, the negative electrode of isolating diode D9, the Vin-1 of power supply adaptor ADT1 to ADTn to be aging simultaneously, the anode of isolating diode D9 and the output cathode Vo ' of DC dc converter 8+be connected, the output negative pole V-of rectifier bridge BD1 is connected with another input Vin-2 of the negative pole of storage capacitor C1 2 and power supply adaptor ADT1 to ADTn to be aging, the cathode output end Vo1+ of power supply adaptor ADT1 to be aging is connected with the input Va of the positive pole of storage capacitor C2 5 and DC dc converter 8, the cathode output end Vol-of power supply adaptor ADT1 to be aging is connected with ADT2 positive pole Vo2+, the positive pole Vo3+ of negative pole Vo2-and the ADT3 of ADT2 is connected, rule is until the negative pole Vo (n-1)-be connected with the positive pole Von+ of ADTn of ADTn-1 according to this, the cathode output end Von-of power supply adaptor ADTn to be aging is connected with one end of the negative pole of storage capacitor C2 5 and current sampling resistor R1 6, described multiple diode D1 to Dn is just being connected across corresponding power supply adaptor ADT1 to ADTn to be aging respectively, between cathode output end, diode cathode connects the cathode output end of power supply adaptor, diode cathode connects the cathode output end of power supply adaptor, the input that the other end of current sampling resistor R1 6 compares amplifying circuit 7 with the input Vb of DC dc converter DC/DC (8) and input electric cur-rent measure is connected, the control end Vc of output and DC dc converter 8 that described input electric cur-rent measure compares amplifying circuit 7 is connected, the output negative pole Vo ' of DC dc converter 8-, the negative pole of negative pole V-that rectifier bridge BD1 exports and storage capacitor C1 2 is connected with Gnd2.Described input electric cur-rent measure compares amplifying circuit 7 and comprises comparison amplifier M, resistance R2, resistance R3, resistance R4, described resistance R2 mono-termination current sampling resistor R1 6, the positive input of another termination comparison amplifier M of resistance R2, the one termination reference voltage Vref of described resistance R3, the reverse input end of another termination comparison amplifier M, the reverse input end of the one termination comparison amplifier M of described resistance R4, the output of another termination comparison amplifier M, the control end Vc of the output termination DC dc converter 8 of described comparison amplifier M.
The output current signal of ADT is compared amplification with the standard operation signal of setting by comparison amplifier M, its output voltage produced goes the DC dc converter operating state of control inputs controlled current flow, to ensure that the output current of product to be aging reaches the requirement of setting, output electric energy is delivered to the input port of power supply adaptor to be aging simultaneously.The output current Io of power supply adaptor to be aging is transferred to a corresponding voltage signal R1*Io by current sampling resistor R1, this voltage and reference voltage Vref are subtracted each other, and the difference of subtracting each other is amplified R4/R3 doubly, it exports Vo=(R1*Io-Vref) * R4/R3.
Inputting controlled DC dc converter is that an input direct-current exports DC converter, be characterized in controlling by external signal Vc end, it is operated in input constant current mode, to guarantee power supply adaptor stable output to be aging, the output services electric current of power supply adaptor to be aging can be controlled by external setting-up.Input signal and reference voltage Vref to be subtracted each other by operational amplifier M and produce after amplifying by the external control signal Vc of DC converter.
Operation principle of the present utility model and process as follows:
During the work of this device, external power source Vac produces direct-current working volts by rectifier bridge BD and storage capacitor C1, this voltage delivers to the input port of power supply adaptor ADT to be aging, the input port of all power supply adaptor ADT to be aging is in parallel, its output is connected according to need, to guarantee that the voltage produced on storage capacitor C2 after the output of n power supply adaptor to be aging is connected does not exceed the input voltage requirement of DC converter (DC/DC).The voltage produced on storage capacitor C2 at n power supply adaptor ADT to be aging is like this added to the input of DC converter DC/DC, the input current of regulable control DC converter is removed in the setting of DC converter DC/DC foundation Vref, suppose that the change in voltage on storage capacitor C2 is ignored, so the input current of DC converter just equals the output current of power supply adaptor to be aging.The one part of current of the output current Is of DC converter DC/DC is to input buffer capacitor C1 charging, and another part electric current flows into the input of power supply adaptor to be aging simultaneously, to realize circulating of electric energy.When adjustment Vref control Vc just can guarantee that the output current of power supply adaptor to be aging is Io.Output due to power supply adaptor to be aging is series connection, and therefore the output current of all power supplys to be aging is identical.When the output current of power supply adaptor ADT to be aging is greater than the Io of setting, the corresponding voltage signal Vs that this electric current produces on R1 will be greater than Vref, amplifier M output voltage Vo becomes large, the control voltage Vc that direct current becomes device DC/DC increases, because DC converter DC/DC is permanent input current code converter, now the input current reducing DC converter DC/DC is controlled DC converter DC/DC for constant current input service pattern to reach by the internal controller of DC converter DC/DC, when the output current of power supply adaptor ADT to be aging is less than Io electricity, the corresponding voltage signal Vs that this electric current produces on R1 will be less than Vref, amplifier M output voltage Vo diminishes, direct current becomes the control voltage Vc reduction that device changes DC/DC, because DC converter is permanent input current, now the input current increasing DC converter is controlled DC converter for input constant current operation to reach by the internal controller of DC converter DC/DC, input current due to DC converter DC/DC equals the output current of power supply adaptor ADT to be aging, therefore power supply adaptor ADT to be aging output current will constant operation in rated output voltage and output-current rating state.
Electric energy is entered from the input of power supply adaptor ADT to be aging in this course, by the conversion of power supply adaptor ADT to be aging, deliver to the input of DC converter DC/DC, this electric energy is delivered to the input of power supply adaptor ADT to be aging and achieves recycling of electric energy by the output of DC converter DC/DC.Electric network source Vac suitably replenishes the electric energy of loss in this above-mentioned cyclic process by rectifier BD, thus greatly reduce the external electric energy used in ageing process, simultaneity factor changes the process exchanged without the need to direct current, simplify system hardware composition, improve system effectiveness and reduce cost.
In addition to the implementation, the utility model can also have other execution modes, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection range of the utility model requirement.
Claims (5)
1. the aging burn-in device of power supply adaptor, it is characterized in that, comprise input ac power Vac, rectifier bridge BD (1), storage capacitor C1 (2), multiple power supply adaptor ADT1 to ADTn to be aging, multiple diode D1 to Dn, storage capacitor C2 (5), current sampling resistor R1 (6), input electric cur-rent measure compare amplifying circuit (7), DC dc converter (8), isolating diode D (9), described input ac power Vac connects the input AC pin of rectifier bridge BD (1), the output cathode V+ of rectifier bridge BD (1) holds be connected with the positive pole of storage capacitor C1 (2), the negative electrode of isolating diode D (9), the Vin-1 of power supply adaptor ADT1 to ADTn to be aging simultaneously, the anode of isolating diode D (9) and the output cathode Vo ' of DC dc converter (8)+be connected, the output negative pole V-of rectifier bridge BD (1) is connected with another input Vin-2 of the negative pole of storage capacitor C1 (2) and power supply adaptor ADT1 to ADTn to be aging, the cathode output end Vo1+ of power supply adaptor ADT1 to be aging is connected with the input Va of the positive pole of storage capacitor C2 (5) and DC dc converter (8), the cathode output end Vo1-of power supply adaptor ADT1 to be aging is connected with ADT2 positive pole Vo2+, the positive pole Vo3+ of negative pole Vo2-and the ADT3 of ADT2 is connected, rule is until the negative pole Vo (n-1)-be connected with the positive pole Von+ of ADTn of ADTn-1 according to this, the cathode output end Von-of power supply adaptor ADTn to be aging is connected with one end of the negative pole of storage capacitor C2 (5) and current sampling resistor R1 (6), described multiple diode D1 to Dn is just being connected across corresponding power supply adaptor ADT1 to ADTn to be aging respectively, between cathode output end, diode cathode connects the cathode output end of power supply adaptor, diode cathode connects the cathode output end of power supply adaptor, the input that the other end of current sampling resistor R1 (6) compares amplifying circuit (7) with the input Vb of DC dc converter DC/DC (8) and input electric cur-rent measure is connected, the output that described input electric cur-rent measure compares amplifying circuit (7) is connected with the control end Vc of DC dc converter (8), the output negative pole Vo ' of DC dc converter (8)-, the negative pole of negative pole V-that rectifier bridge BD (1) exports and storage capacitor C1 (2) is connected with Gnd2.
2. the aging burn-in device of power supply adaptor as claimed in claim 1, it is characterized in that, described input electric cur-rent measure compares amplifying circuit (7) and comprises comparison amplifier M, resistance R2, resistance R3, resistance R4, described resistance R2 mono-termination current sampling resistor R1 (6), the positive input of another termination comparison amplifier M of resistance R2, the one termination reference voltage Vref of described resistance R3, the reverse input end of another termination comparison amplifier M, the reverse input end of the one termination comparison amplifier M of described resistance R4, the output of another termination comparison amplifier M, the control end Vc of the output termination DC dc converter (8) of described comparison amplifier M.
3. the aging burn-in device of power supply adaptor as claimed in claim 1, it is characterized in that, the quantity of described power supply adaptor to be aging is between 1 to 30.
4. the aging burn-in device of power supply adaptor as claimed in claim 1, it is characterized in that, described DC dc converter (8) is PWM type.
5. the aging burn-in device of power supply adaptor as claimed in claim 2, it is characterized in that, the model of described comparison amplifier M is LM324.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420807332.6U CN204258622U (en) | 2014-12-17 | 2014-12-17 | The aging burn-in device of power supply adaptor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420807332.6U CN204258622U (en) | 2014-12-17 | 2014-12-17 | The aging burn-in device of power supply adaptor |
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| CN204258622U true CN204258622U (en) | 2015-04-08 |
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| CN201420807332.6U Expired - Fee Related CN204258622U (en) | 2014-12-17 | 2014-12-17 | The aging burn-in device of power supply adaptor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485812A (en) * | 2014-12-17 | 2015-04-01 | 镇江市高等专科学校 | Burn-in device for ageing power supply adapter |
| CN111193424A (en) * | 2020-01-09 | 2020-05-22 | 中国电子科技集团公司第二十四研究所 | Circuit for aging direct-current passive EMI filter |
| CN111431255A (en) * | 2020-03-23 | 2020-07-17 | 广西玉林浩杰新能源科技有限公司 | Energy-saving charger aging system |
-
2014
- 2014-12-17 CN CN201420807332.6U patent/CN204258622U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485812A (en) * | 2014-12-17 | 2015-04-01 | 镇江市高等专科学校 | Burn-in device for ageing power supply adapter |
| CN111193424A (en) * | 2020-01-09 | 2020-05-22 | 中国电子科技集团公司第二十四研究所 | Circuit for aging direct-current passive EMI filter |
| CN111193424B (en) * | 2020-01-09 | 2020-12-22 | 中国电子科技集团公司第二十四研究所 | Circuit for aging direct-current passive EMI filter |
| CN111431255A (en) * | 2020-03-23 | 2020-07-17 | 广西玉林浩杰新能源科技有限公司 | Energy-saving charger aging system |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20201217 |
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| CF01 | Termination of patent right due to non-payment of annual fee |