CN110346705A - Ageing device and its ageing method for H-bridge circuit - Google Patents
Ageing device and its ageing method for H-bridge circuit Download PDFInfo
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- CN110346705A CN110346705A CN201910667497.5A CN201910667497A CN110346705A CN 110346705 A CN110346705 A CN 110346705A CN 201910667497 A CN201910667497 A CN 201910667497A CN 110346705 A CN110346705 A CN 110346705A
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- 230000032683 aging Effects 0.000 title claims abstract description 168
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000001914 filtration Methods 0.000 claims description 35
- 238000012805 post-processing Methods 0.000 claims description 26
- 230000005611 electricity Effects 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2832—Specific tests of electronic circuits not provided for elsewhere
- G01R31/2836—Fault-finding or characterising
- G01R31/2849—Environmental or reliability testing, e.g. burn-in or validation tests
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Abstract
The invention proposes a kind of ageing devices and its ageing method for H-bridge circuit, belong to electric elements the field of test technology, it specifically includes the ageing unit that N grades are successively arranged and is connected to the power circuit of first order ageing unit input terminal and is connected to the load resistance of N grades of ageing unit output ends, every level-one ageing unit includes part to be measured, and the output end of every level-one ageing unit is connect with the input terminal of the part to be measured of next stage ageing unit.It is an object of the invention to solve big for the ageing device power consumption of H-bridge circuit in the prior art problem more than consumptive material, the cost of product can be effectively reduced using ageing device of the invention.
Description
Technical field
The invention belongs to electric elements the field of test technology, and in particular to a kind of ageing device for H-bridge circuit and its
Ageing method.
Background technique
H bridge is a kind of electronic circuit, and the load or output end both end voltage reverse phase/electric current that it can be made to connect are reversed, is used for
The suitable Reverse Turning Control of dc motor and revolving speed control, step motor control, transformation of electrical energy in robot and other implementation occasions
In most of direct-current-alternating-current converter (such as inverter and frequency converter), Partial DC-DC converter (push-pull converter)
Deng, and other power electric devices.
According to the regulation of GJB2438A-2002, all circuit components will carry out old mine pit before delivery.Mesh
Before, it is all the corresponding aging circuit of a H-bridge circuit when H-bridge circuit carries out old mine pit, and on each aging circuit
It is connected with power supply and load resistance, although being also able to achieve the old mine pit to H-bridge circuit, this old mine pit in this way
Mode there is a problem:
1, a H-bridge circuit corresponds to an aging circuit, is connected with power supply on aging circuit, one-to-one independent in this way
More wasteful electricity is connected, there are problems that energy consumption is high；
2, load resistance is connected on each aging circuit, the consumable quantity of load resistance is big, leads to the production cost of product
It is high.
Summary of the invention
For the ageing device technical problem that energy consumption is high, at high cost for solving existing H-bridge circuit, the invention proposes one kind
For the ageing device and its ageing method of H-bridge circuit, ageing device of the invention not only power saving, but also it can be reduced load resistance
Dosage, the ageing cost of product can be effectively reduced.Its specific technical solution is as follows:
A kind of ageing device for H-bridge circuit, the ageing unit successively arranged including N grades and to be connected to the first order old
It refines the power circuit of unit input terminal and is connected to the load resistance of N grades of ageing unit output ends, every level-one ageing list
Member includes part to be measured, and the output end of every level-one ageing unit is connect with the input terminal of the part to be measured of next stage ageing unit.
It further limits, every level-one ageing unit further includes sequentially connected rectifier circuit and filter circuit, institute
The input terminal for stating rectifier circuit on every level-one ageing unit is connect with the output end of part to be measured, the N grades of ageing units
The output end of upper filter circuit is connect with load resistance, the input terminal and power circuit of part to be measured on the first order ageing unit
Connection.
It further limits, the part to be measured is H-bridge circuit.
It further limits, the ageing unit has 5 grades.
The ageing method of ageing device described above, comprising the following steps:
1) provide power supply to the level-one H-bridge circuit that connects on level-one ageing unit by power circuit, rear stage H bridge electricity
The output on road provides power supply after processing for second level H-bridge circuit；
2) output of second level H-bridge circuit provides power supply after processing for three-level H-bridge circuit；
3) output of three-level H-bridge circuit provides power supply after processing for level Four H-bridge circuit；
And so on, until the ageing of complete rear all H-bridge circuits, the output of last N grades of H-bridge circuits load after processing
On load resistance, ageing process is completed.
Further limit, the test process of the N grades of H-bridge circuit the following steps are included:
1) level-one H-bridge circuit is tested:
After the connection power supply of level-one H-bridge circuit, bipolar voltage can be exported, the bipolar voltage is complete through level-one rectifier circuit
Wave rectification and the filtering post-processing of level-one filter circuit are level-one DC voltage；
2) second level H-bridge circuit is tested:
Level-one DC voltage in step 1) provides power supply for second level H-bridge circuit, and second level H-bridge circuit exports bipolarity electricity
Pressure, the bipolar voltage are second level direct current through the full-wave rectification of second level rectifier circuit and the post-processing of secondary filter circuit filtering
Pressure；
3) three-level H-bridge circuit is tested
Second level DC voltage in step 2) provides power supply for three-level H-bridge circuit, and three-level H-bridge circuit exports bipolarity electricity
Pressure, the bipolar voltage are three-level direct current through the full-wave rectification of three-level rectifier circuit and the post-processing of three-level filtering circuit filtering
Pressure；
And so on, until N grades of H-bridge circuits export bipolar voltage, the bipolar voltage is complete through N grades of rectifier circuits
Wave rectification and N grades of filter circuit filtering post-processings are N grades of DC voltage loads on load resistance, and ageing process is completed.
Further limit, the ageing unit has 5 grades, process the following steps are included:
1) level-one H-bridge circuit is tested:
Power supply, the connection of level-one H-bridge circuit are provided to the level-one H-bridge circuit connected on level-one ageing unit by power circuit
After power supply, bipolar voltage can be exported, bipolar voltage is filtered through the full-wave rectification of level-one rectifier circuit and level-one filter circuit
Post-processing is level-one DC voltage；
2) second level H-bridge circuit is tested:
Level-one DC voltage in step 1) provides power supply for second level H-bridge circuit, and second level H-bridge circuit exports bipolarity electricity
Pressure, the bipolar voltage are second level direct current through the full-wave rectification of second level rectifier circuit and the post-processing of secondary filter circuit filtering
Pressure；
3) three-level H-bridge circuit is tested:
Second level DC voltage in step 2) provides power supply for three-level H-bridge circuit, and three-level H-bridge circuit exports bipolarity electricity
Pressure, the bipolar voltage are three-level direct current through the full-wave rectification of three-level rectifier circuit and the post-processing of three-level filtering circuit filtering
Pressure；
4) level Four H-bridge circuit is tested:
Three-level DC voltage in step 3) provides power supply for level Four H-bridge circuit, and level Four H-bridge circuit exports bipolarity electricity
Pressure, the bipolar voltage are level Four direct current through the full-wave rectification of level Four rectifier circuit and the filtering post-processing of level Four filter circuit
Pressure；
5) Pyatyi H-bridge circuit is tested:
Level Four DC voltage in step 4) provides power supply for Pyatyi H-bridge circuit, and Pyatyi H-bridge circuit exports bipolarity electricity
Pressure, the bipolar voltage load on load resistance after the full-wave rectification of Pyatyi rectifier circuit and the filtering of Pyatyi filter circuit,
Ageing process is completed.
It further limits, the voltage value for providing power supply to level-one H-bridge circuit in the step 1) is 28V, corresponding later
0.9~1V of every level-one DC voltage decaying.
Compared with prior art, the invention has the following advantages that
1, the present invention is used for the ageing device of H-bridge circuit comprising the N grades of ageing units successively arranged and is connected to the
The power circuit of level-one ageing unit input terminal and the load resistance for being connected to N grades of ageing unit output ends, every level-one ageing
Unit includes part to be measured, and the input terminal of the part to be measured of the output end of every level-one ageing unit and next stage ageing unit connects
It connects, the output of every level-one ageing unit provides power supply for next stage part to be measured；Every level-one ageing unit include after go to according to
The rectifier circuit and filter circuit of secondary connection, the rectifier circuit input terminal on every level-one ageing unit are all connected with to ageing
Part to be measured, the load circuit are connected to the output end of filter circuit on the ageing unit of end.It only needs to connect on the ageing device
One load resistance and a power circuit, are arranged so not only power saving, and load resistance quantity is few, and product can be effectively reduced
Ageing cost.
2, the present invention, can root when carrying out ageing test for having multiple ageing units in the ageing device of H-bridge circuit
It needs to test, use process is flexible, adjustable the quantity unrestricted choice of ageing unit according to the quantity of product.
3, using the ageing method of the ageing device for H-bridge circuit of the invention, in ageing, by upper level ageing list
Member is transferred to next stage ageing unit as H-bridge circuit on next stage ageing unit through over commutation, filtered DC voltage
Power supply completes ageing process until the N grade DC voltage of end loads on load resistance.Its ageing process is easy to operate, holds
Easily filter out rejected product.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of ageing device of the present invention；
Fig. 2 is the circuit structure diagram of H-bridge circuit；
Fig. 3 is the connected mode schematic diagram of rectifier circuit and filter circuit；
Specific embodiment
Explanation, but this hair are further explained to a specific embodiment of the invention with reference to the accompanying drawings and embodiments
It is bright to be not limited to embodiments described below.
It is the structural schematic diagram of ageing device of the present invention, (N is big to the ageing unit successively arranged by N grades referring to Fig. 1
In the natural number for being equal to 1), the power circuit that is connected on first order ageing unit and be connected to N grade ageing units and export
One load at end hinders composition, and referring to Fig. 3, ageing unit by going to rear sequentially connected rectifier circuit and filter circuit group certainly
At the input terminal of rectifier circuit connects H-bridge circuit on every level-one ageing unit, on power circuit and first order aging circuit
The input terminal of H-bridge circuit connects, and the output end of filter circuit is connected with a load resistance on N grades of ageing units.
It referring to fig. 2, is the circuit structure diagram of H-bridge circuit 2, the triode which connects into H-type by 4 is constituted, wherein 4
A triode is connected to the upper end two sides and lower end two sides of H, respectively has an output end in the waist two sides of H, respectively A is defeated
Outlet and B output end；The upper end of H is connected with the input terminal of DC voltage, lower end ground connection；Meanwhile it being also connected in H-bridge circuit 2
Power input and signal input part.
Embodiment 1
The ageing device of the present embodiment includes 3 ageing units, respectively first order ageing unit, second level ageing list
Member and third level ageing unit；The input terminal of H-bridge circuit is connected with power circuit, first order ageing list on first order ageing unit
The output end of filter circuit is connect with the input terminal of H-bridge circuit on the ageing unit of the second level in member；It is filtered on the ageing unit of the second level
The output end of wave circuit is connect with the input terminal of H-bridge circuit on third level ageing unit；Filter circuit on third level ageing unit
Output end connect load resistance.
The ageing method of the ageing device of the present embodiment the following steps are included:
1) level-one H-bridge circuit is tested:
The power supply for being 28V to the level-one H-bridge circuit offer voltage value connected on level-one ageing unit by power circuit, one
Grade H-bridge circuit exports bipolar voltage, which filters through the full-wave rectification of level-one rectifier circuit and level-one filter circuit
Wave post-processing is the level-one DC voltage that voltage value is 27V；
2) ageing second level H-bridge circuit:
Voltage value in step 1) provides power supply, second level H-bridge circuit for the level-one DC voltage of 27V for second level H-bridge circuit
Bipolar voltage is exported, which is through the full-wave rectification of second level rectifier circuit and the post-processing of secondary filter circuit filtering
Voltage value is the second level DC voltage of 26V；
3) ageing three-level H-bridge circuit:
Voltage value in step 2) provides power supply, three-level H-bridge circuit for the second level DC voltage of 26V for three-level H-bridge circuit
Bipolar voltage is exported, which is through the full-wave rectification of three-level rectifier circuit and the post-processing of three-level filtering circuit filtering
Voltage value is the three-level DC voltage of 25V, and the three-level DC voltage that voltage value is 25V loads the ageing process on load resistance
It completes.
Embodiment 2
The ageing device of the present embodiment includes 5 ageing units, respectively first order ageing unit, second level ageing list
Member, third level ageing unit, fourth stage ageing unit and level V ageing unit；H-bridge circuit is defeated on first order ageing unit
Enter end and is connected with power circuit, the output end of filter circuit and H-bridge circuit on second level ageing unit on first order ageing unit
Input terminal connection；The input of the output end of filter circuit and H-bridge circuit on third level ageing unit on the ageing unit of the second level
End connection；The output end of filter circuit is connect with the input terminal of H-bridge circuit on fourth stage ageing unit on third level ageing unit；
The output end of filter circuit is connect with the input terminal of H-bridge circuit on level V ageing unit on fourth stage ageing unit, level V
The output end of filter circuit connects load resistance on ageing unit.
The ageing method of the ageing device of the present embodiment the following steps are included:
1) level-one H-bridge circuit is tested:
The power supply for being 28V to the level-one H-bridge circuit offer voltage value connected on level-one ageing unit by power circuit, one
Grade H-bridge circuit exports bipolar voltage, which filters through the full-wave rectification of level-one rectifier circuit and level-one filter circuit
Wave post-processing is the level-one DC voltage that voltage value is 27V；
2) second level H-bridge circuit is tested:
Voltage value in step 1) provides power supply, second level H-bridge circuit for the level-one DC voltage of 27V for second level H-bridge circuit
Bipolar voltage is exported, which is through the full-wave rectification of second level rectifier circuit and the post-processing of secondary filter circuit filtering
Voltage value is the second level DC voltage of 26V；
3) three-level H-bridge circuit is tested:
Voltage value in step 2) provides power supply, three-level H-bridge circuit for the second level DC voltage of 26V for three-level H-bridge circuit
Bipolar voltage is exported, which is through the full-wave rectification of three-level rectifier circuit and the post-processing of three-level filtering circuit filtering
Voltage value is the three-level DC voltage of 25V；
4) level Four H-bridge circuit is tested:
Voltage value in step 3) provides power supply, level Four H-bridge circuit for the three-level DC voltage of 25V for level Four H-bridge circuit
Bipolar voltage is exported, which is through the full-wave rectification of level Four rectifier circuit and the filtering post-processing of level Four filter circuit
Voltage value is the level Four DC voltage of 24V,
5) Pyatyi H-bridge circuit is tested:
Voltage value in step 4) provides power supply, Pyatyi H-bridge circuit for the level Four DC voltage of 24V for Pyatyi H-bridge circuit
Bipolar voltage is exported, which is through the full-wave rectification of Pyatyi rectifier circuit and the filtering post-processing of Pyatyi filter circuit
Voltage value is the Pyatyi DC voltage of 23V, and the Pyatyi DC voltage that voltage value is 23V loads the ageing process on load resistance
It completes.
Embodiment 3
The ageing device of the present embodiment includes 6 ageing units, respectively first order ageing unit, second level ageing list
Member, third level ageing unit, fourth stage ageing unit, level V ageing unit and the 6th grade of ageing unit；First order ageing list
The input terminal of H-bridge circuit is connected with power circuit in member, and the output end of filter circuit and the second level are old on first order ageing unit
Refine the input terminal connection of H-bridge circuit on unit；The output end of filter circuit and third level ageing unit on the ageing unit of the second level
The input terminal of upper H-bridge circuit connects；The output end of filter circuit and H bridge electricity on fourth stage ageing unit on third level ageing unit
The input terminal on road connects；On the fourth stage ageing unit output end of filter circuit on level V ageing unit H-bridge circuit it is defeated
Enter end connection；The input terminal of H-bridge circuit connects on the output end of filter circuit and the 6th grade of ageing unit on level V ageing unit
It connects；The output end of filter circuit connects load resistance on 6th grade of ageing unit.
The ageing method of the ageing device of the present embodiment the following steps are included:
1) level-one H-bridge circuit is tested:
The power supply for being 28V to the level-one H-bridge circuit offer voltage value connected on level-one ageing unit by power circuit, one
Grade H-bridge circuit exports bipolar voltage, which filters through the full-wave rectification of level-one rectifier circuit and level-one filter circuit
Wave post-processing is the level-one DC voltage that voltage value is 27.1V；
2) second level H-bridge circuit is tested:
Voltage value in step 1) provides power supply, second level H bridge electricity for the level-one DC voltage of 27.1V for second level H-bridge circuit
Road exports bipolar voltage, which post-processes through the full-wave rectification of second level rectifier circuit and secondary filter circuit filtering
The second level DC voltage for being 26.2V for voltage value；
3) three-level H-bridge circuit is tested:
Voltage value in step 2) provides power supply, three-level H bridge electricity for the second level DC voltage of 26.2V for three-level H-bridge circuit
Road exports bipolar voltage, which post-processes through the full-wave rectification of three-level rectifier circuit and three-level filtering circuit filtering
The three-level DC voltage for being 25.3V for voltage value；
4) level Four H-bridge circuit is tested:
Voltage value in step 3) provides power supply, level Four H bridge electricity for the three-level DC voltage of 25.3V for level Four H-bridge circuit
Road exports bipolar voltage, and the bipolar voltage is after level Four rectifier bridge pressure value circuit full-wave rectification and the filtering of level Four filter circuit
Processing is the level Four DC voltage that voltage value is 24.4V；
5) Pyatyi H-bridge circuit is tested:
Voltage value in step 4) provides power supply, Pyatyi H bridge electricity for the level Four DC voltage of 24.4V for Pyatyi H-bridge circuit
Road exports bipolar voltage, and the bipolar voltage is through the full-wave rectification of Pyatyi rectifier circuit and the filtering post-processing of Pyatyi filter circuit
The Pyatyi DC voltage for being 23.5V for voltage value；
6) six grades of H-bridge circuits are tested:
Voltage value in step 5) provides power supply, six grades of H bridge electricity for the Pyatyi DC voltage of 23.5V for six grades of H-bridge circuits
Road exports bipolar voltage, and the bipolar voltage is through six grades of rectifier circuit full-wave rectifications and six grades of filter circuit filtering post-processings
For six grades of DC voltages that voltage value is 22.6V, six grades of DC voltages that voltage value is 22.6V are loaded on load resistance, always
Refining process is completed.
Claims (8)
1. a kind of ageing device for H-bridge circuit, which is characterized in that the ageing unit successively arranged including N grades and connection
First order ageing unit input terminal power circuit and be connected to the load resistances of N grade ageing unit output ends, it is described often
Level-one ageing unit includes part to be measured, and the output end of every level-one ageing unit and the part to be measured of next stage ageing unit is defeated
Enter end connection.
2. being used for the ageing device of H-bridge circuit as described in claim 1, which is characterized in that every level-one ageing unit is also
Including sequentially connected rectifier circuit and filter circuit, on every level-one ageing unit the input terminal of rectifier circuit with
The output end of part to be measured connects, and the output end of filter circuit is connect with load resistance on the N grades of ageing units, and described first
The input terminal of part to be measured is connect with power circuit on grade ageing unit.
3. being used for the ageing device of H-bridge circuit as claimed in claim 1 or 2, which is characterized in that the part to be measured is H bridge electricity
Road.
4. being used for the ageing device of H-bridge circuit as claimed in claim 2, which is characterized in that the ageing unit has 5 grades.
5. the ageing method of ageing device as described in claim 1, which comprises the following steps:
1) provide power supply to the level-one H-bridge circuit that connects on level-one ageing unit by power circuit, rear stage H-bridge circuit
Output provides power supply after processing for second level H-bridge circuit；
2) output of second level H-bridge circuit provides power supply after processing for three-level H-bridge circuit；
3) output of three-level H-bridge circuit provides power supply after processing for level Four H-bridge circuit；
And so on, until the ageing of complete rear all H-bridge circuits, the output of last N grades of H-bridge circuits are loaded after processing negative
It carries on resistance, ageing process is completed.
6. ageing method as claimed in claim 5, which is characterized in that the test process of the N grades of H-bridge circuit includes following step
It is rapid:
1) level-one H-bridge circuit is tested:
After the connection power supply of level-one H-bridge circuit, bipolar voltage can be exported, the bipolar voltage is whole through level-one rectifier circuit all-wave
Stream and the filtering post-processing of level-one filter circuit are level-one DC voltage；
2) second level H-bridge circuit is tested:
Level-one DC voltage in step 1) provides power supply for second level H-bridge circuit, and second level H-bridge circuit exports bipolar voltage, should
Bipolar voltage is second level DC voltage through the full-wave rectification of second level rectifier circuit and the post-processing of secondary filter circuit filtering；
3) three-level H-bridge circuit is tested
Second level DC voltage in step 2) provides power supply for three-level H-bridge circuit, and three-level H-bridge circuit exports bipolar voltage, should
Bipolar voltage is three-level DC voltage through the full-wave rectification of three-level rectifier circuit and the post-processing of three-level filtering circuit filtering；
And so on, until N grades of H-bridge circuits export bipolar voltage, the bipolar voltage is whole through N grades of rectifier circuit all-waves
Stream and N grades of filter circuit filtering post-processings are N grades of DC voltage loads on load resistance, and ageing process is completed.
7. ageing method as claimed in claim 6, which is characterized in that the ageing unit has 5 grades, and process includes following step
It is rapid:
1) level-one H-bridge circuit is tested:
Power supply, the connection power supply of level-one H-bridge circuit are provided to the level-one H-bridge circuit connected on level-one ageing unit by power circuit
Afterwards, bipolar voltage can be exported, bipolar voltage is after the full-wave rectification of level-one rectifier circuit and the filtering of level-one filter circuit
Reason is level-one DC voltage；
2) second level H-bridge circuit is tested:
Level-one DC voltage in step 1) provides power supply for second level H-bridge circuit, and second level H-bridge circuit exports bipolar voltage, should
Bipolar voltage is second level DC voltage through the full-wave rectification of second level rectifier circuit and the post-processing of secondary filter circuit filtering；
3) three-level H-bridge circuit is tested:
Second level DC voltage in step 2) provides power supply for three-level H-bridge circuit, and three-level H-bridge circuit exports bipolar voltage, should
Bipolar voltage is three-level DC voltage through the full-wave rectification of three-level rectifier circuit and the post-processing of three-level filtering circuit filtering；
4) level Four H-bridge circuit is tested:
Three-level DC voltage in step 3) provides power supply for level Four H-bridge circuit, and level Four H-bridge circuit exports bipolar voltage, should
Bipolar voltage is level Four DC voltage through the full-wave rectification of level Four rectifier circuit and the filtering post-processing of level Four filter circuit；
5) Pyatyi H-bridge circuit is tested:
Level Four DC voltage in step 4) provides power supply for Pyatyi H-bridge circuit, and Pyatyi H-bridge circuit exports bipolar voltage, should
Load is on load resistance after the full-wave rectification of Pyatyi rectifier circuit and the filtering of Pyatyi filter circuit for bipolar voltage, ageing mistake
Journey is completed.
8. the ageing method as described in claim 5~7 is any, which is characterized in that mentioned in the step 1) to level-one H-bridge circuit
Voltage value for power supply is 28V, 0.9~1V of every level-one DC voltage decaying corresponding later.
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| CN201910667497.5A CN110346705A (en) | 2019-07-23 | 2019-07-23 | Ageing device and its ageing method for H-bridge circuit |
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| CN201910667497.5A CN110346705A (en) | 2019-07-23 | 2019-07-23 | Ageing device and its ageing method for H-bridge circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113533898A (en) * | 2021-07-23 | 2021-10-22 | 中国振华集团永光电子有限公司（国营第八七三厂） | Batch photoelectric coupler aging circuit |
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| CN203759199U (en) * | 2014-02-19 | 2014-08-06 | 西安伟京电子制造有限公司 | Aging device used for aging of three-phase bridge circuit |
| CN205786910U (en) * | 2016-05-31 | 2016-12-07 | 航天科工防御技术研究试验中心 | 2KBB rectifier bridge power aging board |
| CN108257895A (en) * | 2018-01-18 | 2018-07-06 | 深圳市振华微电子有限公司 | The power ageing method and ageing device of semi-conductor power module |
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| CN210427734U (en) * | 2019-07-23 | 2020-04-28 | 西安伟京电子制造有限公司 | Burn-in device for H-bridge circuit |
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