CN205301546U - Aging testing circuit of power - Google Patents
Aging testing circuit of power Download PDFInfo
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- CN205301546U CN205301546U CN201521079830.4U CN201521079830U CN205301546U CN 205301546 U CN205301546 U CN 205301546U CN 201521079830 U CN201521079830 U CN 201521079830U CN 205301546 U CN205301546 U CN 205301546U
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- power supply
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Abstract
The utility model provides an aging testing circuit of power, relates to power aging testing technical field, its structure side of including wave generator, square wave generator's input termination has RC oscillation circuit, square wave generator's output termination has control circuit, control circuit includes controllable silicon diode, controllable silicon diode switches on then voltage switch -on to the power that awaits measuring of input to the power that awaits measuring, controllable silicon diode by input to the voltage of the power that awaits measuring then with power supply disconnection awaits measuring, the input voltage's when realizing power aging testing through square wave generator and controllable silicon diode like this on -off control, then can avoid using ac contactor and the switching power supply that probably leads to that produces takes place in the condition that the rectification part of input burnt out, circuit structure is simple, can realize that the aging testing safety of power is gone on, and is little to the damage of power during the test.
Description
Technical field
This utility model relates to power source aging technical field of measurement and test, particularly relates to the burn in test circuit of a kind of power supply.
Background technology
In field of power supplies, power supply is required for doing burn-in test before dispatching from the factory, and burn-in test generally has three kinds of modes.
First kind of way is normal aging: by aging for the load energising of direct for power supply band. The uninterrupted continuous working period of power supply is more than one month, and failsafe, it does not have burning phenomenon, parameters is stable, then it is qualified to be considered as.
The second way is intermittent aging: by Power supply belt load intermittence energising burn-in test, power supply, in load-carrying situation, is ceaselessly energized and power-off, the shock resistance of test power supply. Ageing time more than one month, failsafe, it does not have burning phenomenon, parameters is stable, then it is qualified to be considered as.
Whether the third mode is accelerated ageing: be positioned in high-temperature test chamber by power supply bringing onto load long-term work, check its properties stable.
Output in Switching Power Supply is all with in loaded situation, conventional intermittent burn-in test, i.e. input voltage on off test, usually control an A.C. contactor with the time relay and reach the break-make control of input voltage, but, A.C. contactor is mechanical switch, in make and break process, all can there is the phenomenon of shake in contact, it is possible to causes that Switching Power Supply burns out in the rectifying part of input, and the impact of Switching Power Supply is bigger.
Utility model content
The purpose of this utility model is in that to avoid weak point of the prior art to provide the burn in test circuit of a kind of power supply, and the circuit structure of the burn in test circuit of this power supply is simple, it may be achieved the burn-in test of power supply carries out safely, during test, the damage of power supply is little.
The purpose of this utility model is achieved through the following technical solutions:
The burn in test circuit of a kind of power supply is provided, including square-wave generator, the input of described square-wave generator is connected to RC oscillating circuit, the outfan of described square-wave generator is connected to the control circuit whether being switched to power supply to be measured for the voltage controlling input extremely power supply to be measured according to the output of square wave acoustical generator, and described control circuit includes thyristor diode.
Described RC oscillating circuit is the RC oscillating circuit that could alter that frequency of oscillation.
Could alter that the RC oscillating circuit of frequency of oscillation is the RC oscillating circuit that could alter that the resistance participating in vibration.
The described RC oscillating circuit that could alter that the resistance participating in vibration includes toggle switch and electric resistance array, and described toggle switch accesses to the resistance value of RC oscillating circuit for controlling electric resistance array.
Described toggle switch includes the son switch that at least two is in parallel, a resistance of the same side of every height switch series resistor array respectively.
Described square-wave generator is model is the square-wave generator of LM555.
Described toggle switch includes the first son switch of parallel connection, second son switch and the 3rd son switch, described RC oscillating circuit includes the first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance and the first electric capacity, described first resistance is connected between the RESET pin of LM555 square-wave generator and DISCH pin, described second resistance is connected between the RESET pin of LM555 square-wave generator and DISCH pin by the first son switch, described 3rd resistance is connected between the RESET pin of LM555 square-wave generator and DISCH pin by the second son switch, described 4th resistance is connected between the RESET pin of LM555 square-wave generator and DISCH pin by the 3rd son switch, described 5th resistance is connected between the TRIG pin of LM555 square-wave generator and DISCH pin, the TRIG pin of LM555 square-wave generator and THRES pin connect, described first electric capacity is connected between TRIG pin and the ground of LM555 square-wave generator, DC source adds to described RC oscillating circuit through described toggle switch.
Described control circuit also includes switching tube, transformator, primary rectifier and secondary rectifier, square-wave generator output high level, then switching tube conducting, DC pulse power supply passes through transformator, primary rectifier, thyristor diode forms loop with ground, and then transformator produces electromotive force, its secondary output is by after secondary rectifier rectification, the control applying voltages to thyristor diode is extremely gone up, thyristor diode turns on, make the Voltage On state extremely power supply to be measured of input extremely power supply to be measured, square-wave generator output low level, then switching tube is not turned on, DC pulse power supply passes through transformator, commutator, thyristor diode cannot with formation loop, ground, thyristor diode is not turned on, input is not turned on to power supply to be measured to the voltage of power supply to be measured.
Described control circuit also includes the 3rd electric capacity, 4th electric capacity, 5th electric capacity, 7th resistance, 8th resistance, the first commutation diode as primary rectifier and the second commutation diode as secondary rectifier, described switching tube is field effect transistor, the grid of described field effect transistor connects the OUT pin of described LM555 square-wave generator, the source ground of field effect transistor, DC pulse power supply is followed by the drain electrode to field effect transistor through primary and second rectifies of transformator successively, the secondary of transformator is followed by the 4th electric capacity through the first rectifies successively, the pole that controls of thyristor diode is connected to the contact between the first commutation diode and the 4th electric capacity, 7th resistance is connected between control pole and the negative electrode of thyristor diode, 5th electric capacity and the 8th resistant series are followed by between the anode and negative electrode of thyristor diode, the anode of thyristor diode connects the input voltage to power supply to be measured, the negative electrode of thyristor diode is used for receiving survey power supply.
Described control circuit also includes the 3rd electric capacity and the 6th resistance, and described 3rd electric capacity is connected between grid and the source electrode of described field effect transistor, and described 6th resistance is connected between grid and the source electrode of described field effect transistor.
The Vcc pin of described LM555 square-wave generator connects described DC source.
The beneficial effects of the utility model:
The burn in test circuit of a kind of power supply of the present utility model, including square-wave generator, the outfan of described square-wave generator is connected to the control circuit whether being switched to power supply to be measured for the voltage controlling input extremely power supply to be measured according to the output of square wave acoustical generator, described control circuit includes thyristor diode, square-wave generator is for producing to control the low and high level whether thyristor diode turns on, whether thyristor diode turns on determines input is to whether the voltage of power supply to be measured is switched to power supply to be measured, this utility model breaches the custom circuit (namely utilizing the time relay and A.C. contactor) of power source aging test, square-wave generator is applied to dexterously the burn-in test field of power supply, the break-make of input voltage when realizing power source aging test by the combination of square-wave generator and thyristor diode controls, thyristor diode belongs to electrical switch, the Switching Power Supply that may result in that then can avoid using the mechanical switch such as the time relay and A.C. contactor and produce occurs in the rectifying part situation about burning out of input, circuit structure is simple, the burn-in test that can realize power supply carries out safely, during test the damage of power supply is little.
RC oscillating circuit of the present utility model is the RC oscillating circuit that could alter that frequency of oscillation, thus can select flip-flop transition of the output level of square wave generator according to actual needs, and the scope of application is wider.
The RC oscillating circuit that could alter that frequency of oscillation of the present utility model is the RC oscillating circuit that could alter that the resistance participating in vibration, it includes toggle switch and electric resistance array, described toggle switch accesses to the resistance value of RC oscillating circuit for controlling electric resistance array, circuit structure is simple, convenient operation.
Accompanying drawing explanation
Utilize accompanying drawing that utility model is described further, but the embodiment in accompanying drawing does not constitute any restriction of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to the following drawings.
Fig. 1 is the circuit diagram of the burn in test circuit of a kind of power supply of the present utility model.
Detailed description of the invention
With the following Examples this utility model is further described.
A kind of burn in test circuit of the power supply of the present embodiment, including square-wave generator, the input of described square-wave generator is connected to the RC oscillating circuit that could alter that frequency of oscillation, and the outfan of described square-wave generator is connected to the control circuit whether being switched to power supply to be measured for the voltage controlling input extremely power supply to be measured according to the output of square wave acoustical generator.
The described RC oscillating circuit that could alter that frequency of oscillation is the RC oscillating circuit that could alter that the resistance participating in vibration, and including toggle switch and electric resistance array, described toggle switch accesses to the resistance value of RC oscillating circuit for controlling electric resistance array.
Described square-wave generator is model is the square-wave generator of LM555, certainly, it is possible to use the square-wave generator of other models.
Concrete, as shown in Figure 1, described toggle switch K1 includes the first son switch of parallel connection, second son switch and the 3rd son switch, described RC oscillating circuit includes the first resistance R8, second resistance R3, 3rd resistance R4, 4th resistance R1, 5th resistance R4 and the first electric capacity C1, described first resistance R8 is connected between RESET pin and the DISCH pin of LM555 square-wave generator U1, described second resistance R3 is connected between RESET pin and the DISCH pin of LM555 square-wave generator U1 by the first son switch, described 3rd resistance R2 is connected between RESET pin and the DISCH pin of LM555 square-wave generator U1 by the second son switch, described 4th resistance R1 is connected between RESET pin and the DISCH pin of LM555 square-wave generator U1 by the 3rd son switch, described 5th resistance R4 is connected between TRIG pin and the DISCH pin of LM555 square-wave generator U1, the TRIG pin of LM555 square-wave generator U1 and THRES pin connect, described first electric capacity C1 is connected between TRIG pin and the ground of LM555 square-wave generator U1, the DC source VCC of 15V adds to described RC oscillating circuit through described toggle switch K1.
Described control circuit includes field effect transistor Q1, transformator T1, thyristor diode SCR1, 3rd electric capacity C3, 4th electric capacity C4, 5th electric capacity C5, 7th resistance R6, 8th resistance R7, first commutation diode D1 and the second commutation diode D2, the grid of described field effect transistor Q1 connects the OUT pin of described LM555 square-wave generator U1, the source ground of field effect transistor Q1, DC pulse power vd D is followed by the drain electrode to field effect transistor Q1 through primary and the second commutation diode D2 rectification of transformator T1 successively, the secondary of transformator T1 is followed by the 4th electric capacity C4 through the first commutation diode D1 rectification successively, the pole that controls of thyristor diode SCR1 is connected to the contact between the first commutation diode D1 and the 4th electric capacity C4, 7th resistance R6 is connected between control pole and the negative electrode of thyristor diode SCR1, 5th electric capacity C5 and the 8th resistance R7 series connection is followed by between the anode and negative electrode of thyristor diode SCR1, the anode of thyristor diode SCR1 connects the input voltage (voltage that namely INPUT is used for will inputting to power supply to be measured inputs the anode to thyristor diode SCR1) to power supply to be measured, the negative electrode of thyristor diode SCR1 is used for receiving survey power supply (namely OUTPUT is used for being connected to power supply to be measured).
Described control circuit also includes the 3rd electric capacity C3 and the six resistance R5, described 3rd electric capacity C3 is connected between grid and the source electrode of described field effect transistor Q1, described 6th resistance R5 is connected between grid and the source electrode of described field effect transistor Q1, can prevent thyristor diode SCR1 misoperation.
The DC source VCC of described 15V is through the second electric capacity C2 ground connection, and DC source VCC is filtered by the second electric capacity C2.
The operation principle of the present embodiment is as follows:
Resistance R1, R2, R3, R4, R8 and electric capacity C1 are the peripheral oscillating devices of LM555 square-wave generator U1, by the above annexation with toggle switch K1, can be used for adjusting the time constant of the peripheral oscillating device RC of LM555 square-wave generator U1, change the frequency of oscillation of LM555 square-wave generator U1, it is achieved the height-low level upset of output different time.
Square-wave generator U1 exports high level, then field effect transistor Q1 conducting, DC pulse power vd D forms loop by transformator T1, the second commutation diode D2, thyristor diode SCR1 with ground, and then transformator T1 produces electromotive force, its secondary output is by after the first commutation diode D1 rectification, the control applying voltages to thyristor diode SCR1 is extremely gone up, and thyristor diode SCR1 turns on so that the Voltage On state extremely power supply to be measured of input extremely power supply to be measured.
Square-wave generator U1 output low level, then field effect transistor Q1 is not turned on, DC pulse power vd D passes through transformator T1, the second commutation diode D2, thyristor diode SCR1 cannot with formation loops, ground, thyristor diode SCR1 is not turned on so that input is not turned on to power supply to be measured to the voltage of power supply to be measured.
A kind of burn in test circuit of the power supply of the present embodiment, breach the custom circuit (namely utilizing the time relay and A.C. contactor) of power source aging test, square-wave generator is applied to dexterously the burn-in test field of power supply, the break-make of input voltage when realizing power source aging test by the combination of square-wave generator and thyristor diode controls, thyristor diode belongs to electrical switch, the Switching Power Supply that may result in that then can avoid using the mechanical switch such as the time relay and A.C. contactor and produce occurs in the rectifying part situation about burning out of input, circuit structure is simple, the burn-in test that can realize power supply carries out safely, during test the damage of power supply is little.
The RC oscillating circuit of the present embodiment is the RC oscillating circuit that could alter that frequency of oscillation, thus can select flip-flop transition of the output level of square wave generator according to actual needs, and the scope of application is wider.
The RC oscillating circuit that could alter that frequency of oscillation of the present embodiment is the RC oscillating circuit that could alter that the resistance participating in vibration, it includes toggle switch and electric resistance array, described toggle switch accesses to the resistance value of RC oscillating circuit for controlling electric resistance array, circuit structure is simple, convenient operation.
Finally should be noted that; above example is only in order to illustrate the technical solution of the utility model; but not the restriction to this utility model protection domain; although having made to explain to this utility model with reference to preferred embodiment; it will be understood by those within the art that; the technical solution of the utility model can be modified or equivalent replacement, without deviating from the spirit and scope of technical solutions of the utility model.
Claims (10)
1. the burn in test circuit of a power supply, it is characterized in that: include square-wave generator, the input of described square-wave generator is connected to RC oscillating circuit, the outfan of described square-wave generator is connected to control circuit, described control circuit includes thyristor diode, described thyristor diode conducting then input is to the Voltage On state of power supply to be measured to power supply to be measured, and described thyristor diode cut-off then input disconnects to the voltage of power supply to be measured with power supply to be measured.
2. the burn in test circuit of a kind of power supply as claimed in claim 1, it is characterised in that: described RC oscillating circuit is the RC oscillating circuit that could alter that frequency of oscillation.
3. the burn in test circuit of a kind of power supply as claimed in claim 2, it is characterised in that: could alter that the RC oscillating circuit of frequency of oscillation is the RC oscillating circuit that could alter that the resistance participating in vibration.
4. the burn in test circuit of a kind of power supply as claimed in claim 3, it is characterized in that: described in could alter that the RC oscillating circuit of resistance participating in vibration includes toggle switch and electric resistance array, described toggle switch accesses to the resistance value of RC oscillating circuit for controlling electric resistance array.
5. the burn in test circuit of a kind of power supply as claimed in claim 4, it is characterised in that: described toggle switch includes the son switch that at least two is in parallel, a resistance of the same side of every height switch series resistor array respectively.
6. the burn in test circuit of a kind of power supply as claimed in claim 4, it is characterised in that: described square-wave generator is model is the square-wave generator of LM555.
7. the burn in test circuit of a kind of power supply as claimed in claim 6, it is characterized in that: described toggle switch includes the first son switch of parallel connection, second son switch and the 3rd son switch, described RC oscillating circuit includes the first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance and the first electric capacity, described first resistance is connected between the RESET pin of LM555 square-wave generator and DISCH pin, described second resistance is connected between the RESET pin of LM555 square-wave generator and DISCH pin by the first son switch, described 3rd resistance is connected between the RESET pin of LM555 square-wave generator and DISCH pin by the second son switch, described 4th resistance is connected between the RESET pin of LM555 square-wave generator and DISCH pin by the 3rd son switch, described 5th resistance is connected between the TRIG pin of LM555 square-wave generator and DISCH pin, the TRIG pin of LM555 square-wave generator and THRES pin connect, described first electric capacity is connected between TRIG pin and the ground of LM555 square-wave generator, DC source adds to described RC oscillating circuit through described toggle switch.
8. the burn in test circuit of a kind of power supply as claimed in claim 7, it is characterized in that: described control circuit also includes switching tube, transformator, primary rectifier and secondary rectifier, square-wave generator output high level, then switching tube conducting, DC pulse power supply passes through transformator, primary rectifier, thyristor diode forms loop with ground, and then transformator produces electromotive force, its secondary output is by after secondary rectifier rectification, the control applying voltages to thyristor diode is extremely gone up, thyristor diode turns on, make the Voltage On state extremely power supply to be measured of input extremely power supply to be measured, square-wave generator output low level, then switching tube is not turned on, DC pulse power supply passes through transformator, commutator, thyristor diode cannot with formation loop, ground, thyristor diode is not turned on, input is not turned on to power supply to be measured to the voltage of power supply to be measured.
9. the burn in test circuit of a kind of power supply as claimed in claim 8, it is characterized in that: described control circuit also includes the 3rd electric capacity, 4th electric capacity, 5th electric capacity, 7th resistance, 8th resistance, the first commutation diode as primary rectifier and the second commutation diode as secondary rectifier, described switching tube is field effect transistor, the grid of described field effect transistor connects the OUT pin of described LM555 square-wave generator, the source ground of field effect transistor, DC pulse power supply is followed by the drain electrode to field effect transistor through primary and second rectifies of transformator successively, the secondary of transformator is followed by the 4th electric capacity through the first rectifies successively, the pole that controls of thyristor diode is connected to the contact between the first commutation diode and the 4th electric capacity, 7th resistance is connected between control pole and the negative electrode of thyristor diode, 5th electric capacity and the 8th resistant series are followed by between the anode and negative electrode of thyristor diode, the anode of thyristor diode connects the input voltage to power supply to be measured, the negative electrode of thyristor diode is used for receiving survey power supply.
10. the burn in test circuit of a kind of power supply as claimed in claim 9, it is characterized in that: described control circuit also includes the 3rd electric capacity and the 6th resistance, described 3rd electric capacity is connected between grid and the source electrode of described field effect transistor, and described 6th resistance is connected between grid and the source electrode of described field effect transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521079830.4U CN205301546U (en) | 2015-12-22 | 2015-12-22 | Aging testing circuit of power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521079830.4U CN205301546U (en) | 2015-12-22 | 2015-12-22 | Aging testing circuit of power |
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| Publication Number | Publication Date |
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| CN205301546U true CN205301546U (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521079830.4U Active CN205301546U (en) | 2015-12-22 | 2015-12-22 | Aging testing circuit of power |
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| CN (1) | CN205301546U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105589047A (en) * | 2015-12-22 | 2016-05-18 | 易事特集团股份有限公司 | Power supply aging test circuit |
| EP3327929A3 (en) * | 2016-11-04 | 2018-08-15 | Johnson Electric S.A. | Rc oscillator, motor-driven integrated circuit, and motor device |
| CN116224012A (en) * | 2023-04-26 | 2023-06-06 | 杭州高裕电子科技股份有限公司 | Full-dynamic aging method for diode |
-
2015
- 2015-12-22 CN CN201521079830.4U patent/CN205301546U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105589047A (en) * | 2015-12-22 | 2016-05-18 | 易事特集团股份有限公司 | Power supply aging test circuit |
| EP3327929A3 (en) * | 2016-11-04 | 2018-08-15 | Johnson Electric S.A. | Rc oscillator, motor-driven integrated circuit, and motor device |
| US10483948B2 (en) | 2016-11-04 | 2019-11-19 | Johnson Electric International AG | RC oscillator, motor-driven integrated circuit, and motor device |
| CN116224012A (en) * | 2023-04-26 | 2023-06-06 | 杭州高裕电子科技股份有限公司 | Full-dynamic aging method for diode |
| CN116224012B (en) * | 2023-04-26 | 2024-03-29 | 杭州高裕电子科技股份有限公司 | Full-dynamic aging method for diode |
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