CN204666737U - A kind of current testing device of high-frequency direct-current - Google Patents
A kind of current testing device of high-frequency direct-current Download PDFInfo
- Publication number
- CN204666737U CN204666737U CN201520208548.5U CN201520208548U CN204666737U CN 204666737 U CN204666737 U CN 204666737U CN 201520208548 U CN201520208548 U CN 201520208548U CN 204666737 U CN204666737 U CN 204666737U
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- mount pad
- current
- testing device
- described mount
- circuit board
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- Testing Of Individual Semiconductor Devices (AREA)
Abstract
The utility model is applicable to field, provide a kind of current testing device of high-frequency direct-current, this current testing device comprises mount pad, testing circuit board, test bench, mount pad base plate, and multiple connector, described testing circuit board is located in described mount pad, described test bench is located at the end face of described mount pad, described test bench connects described testing circuit board by wire, described mount pad is located on described mount pad base plate, multiple described connector is located on the side plate of described mount pad respectively, multiple described connector is connected on described testing circuit board respectively by connection wire.
Description
Technical field
The utility model belongs to electron device testing field, particularly relates to a kind of current testing device of high-frequency direct-current.
Background technology
Inductor product on current components and parts market normally needs test.These products are applied in the Switching Power Supply of consumer electronics mostly.And these power supplys are the necessary parts of household equipment and commercial unit substantially, from charger for mobile phone, computer power has use to large-scale aircraft and boats and ships.In order to check design and the performance of these inductance, by DC bias current by these inductance, must see that can these inductance meet specification. be all will carry out this test in the design phase or in the production phase.
Inductance manufacturer usually makees magnetic core with iron oxide material and goes to increase inductance value.When the electric current by inductance is close to when designing the upper limit, high magnetic permeability inductance starts occur saturated and reduce inductance value.Also the resistance of coil magnet ring can be made to generate heat hot, this is because can heat magnetic core simultaneously.Therefore, reduce magnetic permeability, also reduce individual pen inductance value simultaneously, if must increase the number of turns when will reach identical sensibility reciprocal, it is excessive that this will cause inductance to generate heat, and may cause thermal runaway, even can burn out product.
In order to weight reduction, reduce space and cost, the manufacturer of power supply has more and more turned to high-frequency inductor.Such benefit is that little inductance value just may be used for certain power flow.New semiconductor has switch speed faster, and new core material in high frequency loss reduces, and so just can meet new demand.
Testing apparatus needs to assess these magnetic core performances, and equipment is made up of electric impedance analyzer and bias current sources usually, and bias current sources can the maximum operating currenbt of sampling test, and electric impedance analyzer at least needs the frequency covering sample work.Electric impedance analyzer is wanted to operate bias current sources collaborative work together simultaneously.
Now, current source is on the market all substantially all by frequency limitation, and common frequency range is 3MHz.This is because the electric impedance analyzer of high bias direct current source coupling high frequency is very difficult, the problem causing the reason of difficulty to be not only DC bias current source also will consider fixture and the connecting line of test component.
Utility model content
The purpose of this utility model is the current testing device providing a kind of high-frequency direct-current, is intended to the problem solving above-mentioned technology.
The utility model realizes like this, a kind of current testing device of high-frequency direct-current, this current testing device comprises mount pad, testing circuit board, test bench, mount pad base plate, and multiple connector, described testing circuit board is located in described mount pad, described test bench is located at the end face of described mount pad, described test bench connects described testing circuit board by wire, described mount pad is located on described mount pad base plate, multiple described connector is located on the side plate of described mount pad respectively, multiple described connector is connected on described testing circuit board respectively by connection wire.
Further technical scheme of the present utility model is: this current testing device also comprises protective cover, and described protective cover is located on described mount pad by turning axle.
Further technical scheme of the present utility model is: described connector is fixed on the side plate of described mount pad by screw thread.
Further technical scheme of the present utility model is: described mount pad base plate is bolted described mount pad.
Further technical scheme of the present utility model is: described testing circuit board is fixed by screws in described mount pad.
Further technical scheme of the present utility model is: the front panel of described mount pad is provided with two connectors.
Further technical scheme of the present utility model is: the left and right sides plate of described mount pad is respectively provided with two connectors respectively.
The beneficial effects of the utility model are: can ensure operator safe, test accuracy rate high, simple to operation.
Accompanying drawing explanation
Fig. 1 is the exploded view of the current testing device of the high-frequency direct-current that the utility model embodiment provides.
Embodiment
Reference numeral: 1-test bench 2-protective cover 3-mount pad 4-connector 5-testing circuit board 6-mount pad base plate.
Fig. 1 shows the current testing device of the high-frequency direct-current that the utility model provides, this current testing device comprises mount pad 3, testing circuit board 5, test bench 1, mount pad base plate 6, and multiple connector 4, described testing circuit board 5 is located in described mount pad 3, described test bench 1 is located at the end face of described mount pad 3, described test bench 1 connects described testing circuit board 5 by wire, described mount pad 3 is located on described mount pad base plate 6, multiple described connector 4 is located on the side plate of described mount pad 3 respectively, multiple described connector 4 is connected on described testing circuit board 5 respectively by connection wire.
This current testing device also comprises protective cover 2, and described protective cover 2 is located on described mount pad 3 by turning axle.
Described connector 4 is fixed on the side plate of described mount pad 3 by screw thread.
Described mount pad base plate 6 is bolted described mount pad 3.
Described testing circuit board 5 is fixed by screws in described mount pad 3.
The front panel of described mount pad 3 is provided with two connectors 4.
The left and right sides plate of described mount pad 3 is respectively provided with two connectors 4 respectively.
The design of this current testing device is for clamping testee for 6500 and 6565 test macros.6500 series can measure Passive components, and frequency range covers 20Hz ~ 120MHz, and 6565 (4) can add that DC current reaches 40A, and 1027 can meet test frequency to 120MHz, are added in the DC current 40A at measured object two ends.
Electric impedance analyzer 6500 can output AC signal 20Hz ~ 120MHz, be connected on high-frequency direct-current fixture 1027 by 4 test connecting lines, high-frequency direct-current electric current source 6565 is connected on 1207 by 2 electric current connecting lines, when measured object is arranged on 1027 by user, press the Bias button on 6500, high-frequency direct-current electric current source starts the DC current exporting user's setting, just can test.Electric impedance analyzer 6500 has been tested, and presses Bias button, and high-frequency direct-current electric current source is closed direct current and exported, and user just can take off measured object.
Usually in low frequency (20Hz ~ 3MHz) section, direct supply is connected employing copper coin with fixture or copper bar connects, in high frequency (20Hz ~ 120MHz) situation, the stray capacitance formed between two copper coins or copper bar is too large, cause parasitic capacitance in parallel at testee two ends, significant errors is caused to the result of test, new design adopts the copper bar with shield external layer, cannot stray capacitance be formed, can not affect to some extent measuring accuracy.
There is the joint connecting shielding copper bar all to have employed aviation plug connected mode in the both sides of high-frequency direct-current fixture, and with one public one maternal formula exist, can not cause like this connecting line connect positive and negative terminal is connected with the positive and negative terminal in high-frequency direct-current electric current source mistake and worry has evaded connecting line mistake completely.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (7)
1. the current testing device of high-frequency direct-current, it is characterized in that: this current testing device comprises mount pad, testing circuit board, test bench, mount pad base plate and multiple connector, described testing circuit board is located in described mount pad, described test bench is located at the end face of described mount pad, described test bench connects described testing circuit board by wire, described mount pad is located on described mount pad base plate, multiple described connector is located on the side plate of described mount pad respectively, and multiple described connector is connected on described testing circuit board respectively by connection wire.
2. current testing device according to claim 1, is characterized in that, this current testing device also comprises protective cover, and described protective cover is located on described mount pad by turning axle.
3. current testing device according to claim 1 and 2, is characterized in that, described connector is fixed on the side plate of described mount pad by screw thread.
4. current testing device according to claim 3, is characterized in that, described mount pad base plate is bolted described mount pad.
5. current testing device according to claim 4, is characterized in that, described testing circuit board is fixed by screws in described mount pad.
6. current testing device according to claim 5, is characterized in that, the front panel of described mount pad is provided with two connectors.
7. current testing device according to claim 6, is characterized in that, the left and right sides plate of described mount pad is respectively provided with two connectors respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520208548.5U CN204666737U (en) | 2015-04-09 | 2015-04-09 | A kind of current testing device of high-frequency direct-current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520208548.5U CN204666737U (en) | 2015-04-09 | 2015-04-09 | A kind of current testing device of high-frequency direct-current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204666737U true CN204666737U (en) | 2015-09-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520208548.5U Expired - Fee Related CN204666737U (en) | 2015-04-09 | 2015-04-09 | A kind of current testing device of high-frequency direct-current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204666737U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109326905A (en) * | 2017-11-28 | 2019-02-12 | 苏州欧肯葵电子有限公司 | A kind of adapting system of automotive test |
-
2015
- 2015-04-09 CN CN201520208548.5U patent/CN204666737U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109326905A (en) * | 2017-11-28 | 2019-02-12 | 苏州欧肯葵电子有限公司 | A kind of adapting system of automotive test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20160409 |