CN215728491U

CN215728491U - Testing device for power filter

Info

Publication number: CN215728491U
Application number: CN202121552425.5U
Authority: CN
Inventors: 熊焰明
Original assignee: Jiangsu Eeest Advanced Technology Co ltd
Current assignee: Jiangsu Eeest Advanced Technology Co ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2022-02-01
Anticipated expiration: 2031-07-09

Abstract

The utility model provides a testing device of a power supply filter, which can facilitate the testing of the filter and improve the testing efficiency. The clamp comprises a clamp seat and a test seat, wherein the clamp seat comprises a clamp main body and a lead circuit board, the clamp main body is used for mounting the lead circuit board and one or more filters, one end of the lead circuit board is provided with a connecting electrode, the position of the connecting electrode corresponds to the position of a pin of the filter, the connecting electrode is used for contacting with the pin of the filter, the other end of the lead circuit board is provided with a test contact, and the test contact is electrically connected with the connecting electrode; the test seat comprises a test board, a test probe is arranged on the test board, the position of the test probe corresponds to the position of the test contact and is used for contacting with the test contact, a test joint is further arranged on the test board and is electrically connected with the test probe, and the test joint is used for connecting a test instrument.

Description

Testing device for power filter

Technical Field

The utility model relates to the technical field of filter testing, in particular to a testing device of a power supply filter.

Background

The filter at the direct current output end of the power supply is a low-pass filter formed by capacitance, resistance and inductance elements, and in the production test of high-end power supply filters with small batch and various varieties, the filter performance needs to be tested, such as high-frequency parameters of common-mode insertion loss, differential-mode insertion loss and the like, and internal element parameters of each port such as capacitance to ground, direct-current internal resistance and the like also need to be tested.

In the prior art, the high-frequency performance test and the direct-current performance test of the filter are generally carried out separately at different stations, and in the test of high-end filters in small batches and various types, one filter is generally tested at a time by a high-frequency instrument at a high-frequency test station and the internal resistance of the filter is tested by a resistance test instrument at a direct-current test station by manpower, so that the test efficiency of the method is low.

SUMMERY OF THE UTILITY MODEL

Aiming at the problem of low traditional testing efficiency, the utility model provides a testing device of a power filter, which can facilitate the testing of the filter and improve the testing efficiency.

The technical scheme is as follows: the utility model provides a power filter's testing arrangement, its includes anchor clamps seat and test seat, its characterized in that: the clamp seat comprises a metal clamp main body and a conductive circuit board, the clamp main body is used for mounting the conductive circuit board and one or more filters, one end of the conductive circuit board is provided with a connecting electrode, the position of the connecting electrode corresponds to the position of a pin of the filter, the connecting electrode is used for contacting with the pin of the filter, the other end of the conductive circuit board is provided with a test contact, and the test contact is electrically connected with the connecting electrode;

the test seat comprises a test board, a test probe is arranged on the test board, the position of the test probe corresponds to the position of the test contact and is used for contacting with the test contact, a test joint is further arranged on the test board and is electrically connected with the test probe, and the test joint is used for connecting a test instrument.

Further characterized in that:

each pin corresponds to two independent connecting electrodes;

a pin socket is arranged on the lead circuit board corresponding to each pin, and the pins of the filter penetrate through the clamp body and extend into the pin sockets;

two independent connecting electrodes are arranged in each pin socket;

the connecting electrode is an elastic electrode, and the test probe is an elastic probe;

the test seat also comprises a mounting seat body made of metal, and the mounting seat body is connected with the clamp main body and is used for mounting the test board;

the types of the fixture seats are more than one and are respectively used for installing filters with different specifications, and the positions of the test contacts on all the fixture seats are the same;

when the number of the test joints is more than one, the test seat further comprises a joint switching relay, and the test probe is electrically connected with the test joints of different types through the joint switching relay;

the test joint comprises a radio frequency coaxial joint, a capacitance test joint and a direct current internal resistance test joint, wherein the radio frequency coaxial joint is used for being connected with a high-frequency level parameter test instrument through a coaxial cable, the capacitance test joint is used for being connected with the capacitance parameter test instrument through a 4-wire high-frequency cable, and the direct current internal resistance test joint is used for being connected with the direct current internal resistance test instrument through a 4-wire direct current cable;

when the filter is more than one and the number of the same type of test connectors is less than that of the filters, the test socket further comprises a probe switching relay, and the test connectors are electrically connected with the test probes corresponding to different filters through the probe switching relay.

After the structure is adopted, when the parameters of the filter are required to be tested, the filter is only required to be arranged on the clamp main body in advance, the pins of the filter are in contact with the connecting electrodes on the conducting circuit board, the connecting electrodes are electrically connected with the test contacts, and after the clamp seat and the test seat are connected, the test probes can be connected with the filter, so that the filter is connected onto the test connector, the parameters of the filter can be measured by connecting the test instrument with the test connector, the use is convenient, and the test efficiency is improved.

Drawings

FIG. 1 is a schematic view of a fixture mount;

FIG. 2 is a schematic view of the test contacts on the fixture mount;

FIG. 3 is a schematic view of a test socket;

FIG. 4 is a schematic view of the present invention.

Detailed Description

As shown in fig. 4, the testing apparatus for power filter includes a fixture base 1 and a testing base 2, and referring to fig. 1, the fixture base 1 includes a metal fixture body 11 and a conductive circuit board 12, the fixture body 11 is used to mount the conductive circuit board 12 and one or more filters 3, one end of the conductive circuit board 12 is provided with a connection electrode (which may be an elastic metal sheet, and the contact is more stable), and a pin socket 121 may be provided on the conductive circuit board 12 corresponding to each connection electrode, the pins of the filter penetrate through the fixture body and extend into the pin socket 121, the positions of the connection electrode and the pin socket 121 correspond to the positions of the pins of the filters 3, the connection electrode is used to contact the pins of the filters 3, and in addition, according to different testing requirements, if a 4-wire test is required, at this time, the connection electrode in each pin socket is 2 independent and disconnected electrodes, the pin is used for being in contact connection with the pin, so that the pin can be simultaneously pressed on the two electrodes to be connected out when being inserted into the socket; referring to fig. 2, the other end of the conductive circuit board 12 is provided with a test contact 122, the test contact 122 is electrically connected to the connection electrode (e.g., via a conductive via), the periphery of the socket is shielded by a metal material at a certain distance, the elastic electrodes are independently soldered on a high-frequency circuit board, and each electrode is connected to a corresponding test contact 122 disposed on the opposite side of the circuit board via the circuit board.

And in combination with fig. 3, the test socket 2 includes a test board 21 (circuit board), an elastic test probe 212 is welded on the test board 21 to make the contact more stable, the position of the test probe 212 corresponds to the position of the test contact 122 and is used for contacting with the test contact 122, a test connector is further provided on the test board 21, the test connector is connected with the test probe 212 through a circuit on the test board, the test connector is used for connecting a test instrument, the test socket 2 further includes a metal mounting socket body 22, and the mounting socket body 22 is connected with the clamp body 11 and is used for mounting the test board 21.

Because the pin distribution positions of the filters with different specifications are different, the types of the clamp seats 1 are more than one and are respectively used for installing the filters with different specifications, the positions of the test contacts on all the clamp seats are the same, so that the positions and the intervals of the bottom test contacts are uniform, the test seats can be compatible with the clamp seats in the different specifications, and the test seats are convenient to use without being replaced when different filters are tested.

This device is convenient for the use when same wave filter need test multiple test parameter, test connector this moment is greater than one, the test parameter can be including high frequency insertion loss parameter, each pin capacitance to ground parameter, direct current internal resistance parameter between the input/output end etc. wherein high frequency insertion loss parameter uses 2 line test modes, electric capacity and direct current internal resistance can use 4 line test modes, the selection of test item is switched by the inside various relays of test seat and is realized, specifically, still weld relay 26 on the survey test panel 21, relay 26 also can connect to the test seat 2 outsides outward certainly, test probe 212 passes through relay 26 and different kinds of test connector electricity and connects, joint switching relay is used for switching different joints. Specifically, the test connector comprises a radio frequency coaxial connector 23, a capacitance test connector 24 and a direct current internal resistance test connector 25, the radio frequency coaxial connector 23 is used for being connected with a high-frequency level parameter test instrument through a coaxial cable, the capacitance test connector 24 is used for being connected with the capacitance parameter test instrument through a 4-wire high-frequency cable, the direct current internal resistance test connector 25 is used for being connected with the direct current internal resistance test instrument through a 4-wire direct current cable, after the filter is connected with a test probe, the filter is connected onto different test connectors through a control relay, and therefore the same filter can be installed at one time after being installed on the device to achieve testing of different parameters.

This device also is convenient for large batch wave filter test, be greater than one and when the quantity of the test connection of same kind is less than the quantity of wave filter when the wave filter, every joint can not correspond a wave filter respectively this moment, through welded probe switching relay on the test seat, probe switching relay is used for switching over the probe of connection on the test connection, the test probe is connected through relay and test connection electricity respectively, switch over through control relay (for example through computer control) and make different wave filters receive same test connection in proper order, high durability and convenient use, on this basis, this device combines the test that the above-mentioned relay that is used for the switch joint can be convenient for the multiple parameter of big batch wave filter, high durability and convenient use, high efficiency of software testing.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a power filter's testing arrangement, its includes anchor clamps seat and test seat, its characterized in that: the clamp seat comprises a metal clamp main body and a conductive circuit board, the clamp main body is used for mounting the conductive circuit board and one or more filters, one end of the conductive circuit board is provided with a connecting electrode, the position of the connecting electrode corresponds to the position of a pin of the filter, the connecting electrode is used for contacting with the pin of the filter, the other end of the conductive circuit board is provided with a test contact, and the test contact is electrically connected with the connecting electrode;

2. A testing apparatus of a power filter according to claim 1, wherein: each pin corresponds to two independent connecting electrodes and is used for realizing 4-wire testing.

3. A testing apparatus of a power filter according to claim 1, wherein: and the lead connection circuit board is provided with pin sockets corresponding to the pins, and the pins of the filter penetrate through the clamp body and extend into the pin sockets.

4. A test apparatus of a power filter according to claim 3, wherein: and two independent connecting electrodes are arranged in each pin socket and are used for realizing 4-wire testing.

5. A testing apparatus of a power filter according to claim 1, wherein: the connecting electrode is an elastic electrode, and the testing probe is an elastic probe.

6. A testing apparatus of a power filter according to claim 1, wherein: the test seat further comprises a mounting seat body made of metal, and the mounting seat body is connected with the clamp main body and is used for mounting the test board.

7. A test apparatus for a power filter according to any one of claims 1 to 6, wherein: the types of the fixture seats are more than one and are respectively used for installing filters with different specifications, and the positions of the test contacts on all the fixture seats are the same.

8. A test apparatus for a power filter according to any one of claims 1 to 4, wherein: when the test connector is more than one type, the test seat further comprises a connector switching relay, and the test probe is electrically connected with the different types of test connectors through the connector switching relay.

9. The testing device of claim 8, wherein: the test joint comprises a radio frequency coaxial joint, a capacitance test joint and a direct current internal resistance test joint, the radio frequency coaxial joint is used for being connected with the high-frequency level parameter test instrument through a coaxial cable, the capacitance test joint is used for being connected with the capacitance parameter test instrument through a 4-line high-frequency cable, and the direct current internal resistance test joint is used for being connected with the direct current internal resistance test instrument through a 4-line direct current cable.

10. A test apparatus of a power filter according to claim 1 or 9, wherein: when the filter is more than one and the number of the same type of test connectors is less than that of the filters, the test socket further comprises a probe switching relay, and the test connectors are electrically connected with the test probes corresponding to different filters through the probe switching relay.