CN213275853U - Relay control circuit - Google Patents
Relay control circuit Download PDFInfo
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- CN213275853U CN213275853U CN202021690311.2U CN202021690311U CN213275853U CN 213275853 U CN213275853 U CN 213275853U CN 202021690311 U CN202021690311 U CN 202021690311U CN 213275853 U CN213275853 U CN 213275853U
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- 230000003287 optical effect Effects 0.000 claims description 12
- 230000002457 bidirectional effect Effects 0.000 claims description 11
- 238000012360 testing method Methods 0.000 abstract description 26
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000523 sample Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
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- 230000006978 adaptation Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
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Abstract
The application provides a relay control circuit, which comprises a level trigger control module, a relay module and a load module; the relay module comprises a first high-voltage reed relay KM1 and a second high-voltage reed relay KM2, wherein coil voltages of the first high-voltage reed relay KM1 and the second high-voltage reed relay KM2 are both DC24V in parallel connection, the first high-voltage reed relay KM1 is set as a normally closed contact NC, the second high-voltage reed relay KM2 is set as a normally open contact NO, and the normally closed contact NC and the normally open contact NO are independently packaged; the level trigger control module is used for triggering the relay module by high and low levels, and the output end of the relay module is connected with the load module. The beneficial effect of this application is: a high-voltage dry reed tube type magnetic reed relay is selected, and a normally closed contact NC and a normally open contact NO are independently packaged, so that the voltage resistance of a test circuit is high, the high-voltage test requirement is met, the circuit switching response speed is increased, and the test efficiency is improved; and the resistances of the normally closed contact NC and the normally open contact NO are smaller, so that the influence on the test result is reduced.
Description
Technical Field
The disclosure relates to the technical field of test circuit relay control, in particular to a relay control circuit.
Background
Because of different chip types, the test requirements are different, some need low-voltage test, and some need high-voltage test. In the existing testing method, a testing cable is directly connected with a probe and a wafer bearing disc, one test is moved, sometimes two tests are moved at a time in order to improve efficiency, and a circuit switching testing circuit is needed.
The prior art is as follows: the low-voltage test adopts a common optical coupling isolation relay driving module to realize the switching between the probe 1 and the probe 2. The module is directly available on the market, but the voltage resistance is small, generally DC30V, and the high voltage test generally reaches 1000-3000V, so the high voltage test requirement cannot be met. Meanwhile, the switching response speed of the common module is low, generally 15-20 milliseconds, and the testing efficiency is influenced.
Disclosure of Invention
The present application is directed to the above problems and provides a relay control circuit.
In a first aspect, the present application provides a relay control circuit, including a level trigger control module, a relay module, and a load module; the relay module comprises a first high-voltage reed relay KM1 and a second high-voltage reed relay KM2, wherein coil voltages of the first high-voltage reed relay KM1 and the second high-voltage reed relay KM2 are both DC24V in parallel, the first high-voltage reed relay KM1 is set to be a normally closed contact NC, the second high-voltage reed relay KM2 is set to be a normally open contact NO, and the normally closed contact NC and the normally open contact NO are independently packaged; the level trigger control module is used for triggering the relay module by applying high and low levels, and the output end of the relay module is connected with the load module.
According to the technical scheme provided by the embodiment of the application, the first high-voltage reed relay KM1 and the second high-voltage reed relay KM2 are both provided with high-voltage reed pipe structures.
According to the technical scheme provided by the embodiment of the application, the load module comprises a common end COM, a first output end OUT-NC and a second output end OUT-NO; the common terminal COM is respectively connected with a pin 2 of the first high-voltage reed relay KM1 and a pin 2 of the second high-voltage reed relay KM2, the first output terminal OUT-NC is connected with a pin 1 of the first high-voltage reed relay KM1, and the second output terminal OUT-NO is connected with a pin 1 of the second high-voltage reed relay KM 2.
According to the technical scheme that this application embodiment provided, the level triggers control module includes two-way opto-coupler U1, the input of two-way opto-coupler U1 triggers level signal, be connected with the jumper ware K1 of control level trigger mode on the two-way opto-coupler U1, the output of two-way opto-coupler U1 is connected to the input of relay module.
According to the technical scheme provided by the embodiment of the application, the type of the bidirectional optical coupler U1 is PC 814.
The invention has the beneficial effects that: the application provides a relay control circuit, the withstand voltage capability of a test circuit is strong through independent packaging of a normally closed contact NC and a normally open contact NO, and the minimum withstand voltage DC4KV meets the requirement of high-voltage test; meanwhile, the response speed of circuit switching is improved to 1.1 milliseconds, and the test efficiency is improved; and the resistance of the normally closed contact NC and the normally open contact NO is smaller, generally 150 milliohms, and the influence on the test result is reduced.
Drawings
Fig. 1 is a circuit diagram of a first embodiment of the present application.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following detailed description of the present invention is provided in conjunction with the accompanying drawings, and the description of the present section is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention in any way.
As shown in fig. 1, the relay control circuit of the present application includes a level trigger control module, a relay module, and a load module; the relay module comprises a first high-voltage reed relay KM1 and a second high-voltage reed relay KM2, wherein coil voltages of the first high-voltage reed relay KM1 and the second high-voltage reed relay KM2 are both DC24V in parallel, the first high-voltage reed relay KM1 is set to be a normally closed contact NC, the second high-voltage reed relay KM2 is set to be a normally open contact NO, and the normally closed contact NC and the normally open contact NO are independently packaged; the level trigger control module is used for triggering the relay module by applying high and low levels, and the output end of the relay module is connected with the load module.
In the embodiment, the normally closed contact NC and the normally open contact NO are independently packaged, so that the test circuit has strong voltage resistance, and the minimum voltage resistance DC4KV meets the requirement of high-voltage test; meanwhile, the response speed of circuit switching is improved to 1.1 milliseconds, the performance is stable, the service life is long, the test time is shortened, and the test efficiency is improved; and the contact resistance of the normally closed contact NC and the normally open contact NO is smaller, generally 150 milliohms, and the influence on the test result is reduced.
Preferably, the first high-voltage reed relay KM1 and the second high-voltage reed relay KM2 are both provided with a high-voltage reed pipe structure.
In this embodiment, the load module includes a common terminal COM, a first output terminal OUT-NC, and a second output terminal OUT-NO; the common terminal COM is respectively connected with a pin 2 of the first high-voltage reed relay KM1 and a pin 2 of the second high-voltage reed relay KM2, the first output terminal OUT-NC is connected with a pin 1 of the first high-voltage reed relay KM1, and the second output terminal OUT-NO is connected with a pin 1 of the second high-voltage reed relay KM 2. In the embodiment, when the level trigger exists, the common terminal COM is connected with the second output terminal OUT-NO, and when the level trigger does not exist, the common terminal COM is connected with the first output terminal OUT-NC.
In a preferred embodiment, the level trigger control module comprises a bidirectional optical coupler U1, the input end of the bidirectional optical coupler U1 inputs a trigger level signal, the bidirectional optical coupler U1 is connected with a jumper K1 for controlling a level trigger mode, and the output end of the bidirectional optical coupler U1 is connected to the input end of the relay module.
Preferably, the bidirectional optical coupler U1 is PC 814.
The principles and embodiments of the present application are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present application, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments, or may be learned by practice of the invention.
Claims (5)
1. A relay control circuit is characterized by comprising a level trigger control module, a relay module and a load module; the relay module comprises a first high-voltage reed relay KM1 and a second high-voltage reed relay KM2, wherein coil voltages of the first high-voltage reed relay KM1 and the second high-voltage reed relay KM2 are both DC24V in parallel, the first high-voltage reed relay KM1 is set to be a normally closed contact NC, the second high-voltage reed relay KM2 is set to be a normally open contact NO, and the normally closed contact NC and the normally open contact NO are independently packaged; the level trigger control module is used for triggering the relay module by applying high and low levels, and the output end of the relay module is connected with the load module.
2. The relay control circuit according to claim 1, wherein the first high-voltage reed relay KM1 and the second high-voltage reed relay KM2 are provided in a high-voltage reed pipe structure.
3. The relay control circuit according to claim 1, wherein the load module includes a common terminal COM, a first output terminal OUT-NC, and a second output terminal OUT-NO; the common terminal COM is respectively connected with a pin 2 of the first high-voltage reed relay KM1 and a pin 2 of the second high-voltage reed relay KM2, the first output terminal OUT-NC is connected with a pin 1 of the first high-voltage reed relay KM1, and the second output terminal OUT-NO is connected with a pin 1 of the second high-voltage reed relay KM 2.
4. The relay control circuit according to claim 1, wherein the level trigger control module comprises a bidirectional optical coupler U1, an input end of the bidirectional optical coupler U1 inputs a trigger level signal, a jumper K1 for controlling a level trigger mode is connected to the bidirectional optical coupler U1, and an output end of the bidirectional optical coupler U1 is connected to an input end of the relay module.
5. The relay control circuit according to claim 4, wherein the bidirectional optical coupler is a U1 model PC 814.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021690311.2U CN213275853U (en) | 2020-08-14 | 2020-08-14 | Relay control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021690311.2U CN213275853U (en) | 2020-08-14 | 2020-08-14 | Relay control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213275853U true CN213275853U (en) | 2021-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021690311.2U Active CN213275853U (en) | 2020-08-14 | 2020-08-14 | Relay control circuit |
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| Country | Link |
|---|---|
| CN (1) | CN213275853U (en) |
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2020
- 2020-08-14 CN CN202021690311.2U patent/CN213275853U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20220915 Address after: 101300 0146, floor 3, building 1, yard 1, Shuangyu South Street, Shunyi District, Beijing Patentee after: Beijing Ketai optical core semiconductor equipment Technology Co.,Ltd. Address before: 101125 room 1700, 75 Xinhua North Street, Tongzhou District, Beijing Patentee before: BEIJING GUIKE INTELLIGENT TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CP03 | Change of name, title or address |
Address after: 101399 North Wenhuaying Village, Shunyi District, Beijing (No. 1, Shunchuang 2nd Road) Patentee after: Beijing Ruihuayu Semiconductor Equipment Co.,Ltd. Country or region after: China Address before: 101300 0146, floor 3, building 1, yard 1, Shuangyu South Street, Shunyi District, Beijing Patentee before: Beijing Ketai optical core semiconductor equipment Technology Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240327 Address after: 528248, No. 16 Guangming Avenue, New Light Source Industrial Base, Shishan Town, Nanhai District, Foshan City, Guangdong Province (Residence application, multiple photos for one address) Patentee after: Foshan Xince Technology Co.,Ltd. Country or region after: China Address before: 101399 North Wenhuaying Village, Shunyi District, Beijing (No. 1, Shunchuang 2nd Road) Patentee before: Beijing Ruihuayu Semiconductor Equipment Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |