CN219609183U - Test power supply switching circuit and device - Google Patents
Test power supply switching circuit and device Download PDFInfo
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- CN219609183U CN219609183U CN202223213537.5U CN202223213537U CN219609183U CN 219609183 U CN219609183 U CN 219609183U CN 202223213537 U CN202223213537 U CN 202223213537U CN 219609183 U CN219609183 U CN 219609183U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The utility model provides a test power supply switching circuit and a device, and relates to the technical field of test power supply switching, wherein the test power supply switching circuit comprises a main control module, a switching control module and a switching module which are sequentially connected, and the switching module is also connected with a power supply, a first product to be tested and a second product to be tested; the main control module is used for generating a switching signal; the switching control module is used for outputting a switching control signal according to the switching signal; the switching module is used for switching the power supply into the first product to be tested, disconnecting the power supply from the first product to be tested according to the switching control signal, and switching the power supply into the second product to be tested. The utility model can connect the first product to be tested and the second product to be tested, automatically controls the power supply to be switched from the first product to be tested to the second product to be tested, does not need to wait until the current product to be tested is tested, and then switches the products to be tested, thereby reducing the time for switching the products to be tested and improving the test efficiency.
Description
Technical Field
The present utility model relates to the field of test power switching technologies, and in particular, to a test power switching circuit and device.
Background
In the current factory production line, for products needing to be tested by an external power supply, a scheme of placing a product to be tested into a test rack, manually powering up to start testing, manually powering off after the testing is completed, taking out the product, and then placing the next product to be tested for testing is generally adopted; in the scheme, the current product needs to be tested, and after the current product is taken out, a new product to be tested is put into the current product to start the power-on test, and the time for manually switching different products to be tested is long, so that the product testing efficiency is low.
Disclosure of Invention
The main purpose of the utility model is that: the utility model provides a test power supply switching circuit and device, aims at solving the current time that is longer, the lower technical problem of efficiency of switching the product that awaits measuring when testing the product that needs external power supply test.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
in a first aspect, the utility model provides a test power supply switching circuit, which comprises a main control module, a switching control module and a switching module which are sequentially connected, wherein the switching module is also connected with a power supply, a first product to be tested and a second product to be tested;
the main control module is used for generating a switching signal;
the switching control module is used for outputting a switching control signal according to the switching signal;
the switching module is used for switching the power supply into the first product to be tested, disconnecting the power supply from the first product to be tested according to the switching control signal, and switching the power supply into the second product to be tested.
Optionally, the test power supply switching circuit further includes a first interface module connected with the switching module and the first product to be tested respectively, and a second interface module connected with the switching module and the second product to be tested respectively;
the switching module is also used for connecting the power supply to the first interface module, disconnecting the power supply from the first interface module according to the switching control signal and connecting the power supply to the second interface module;
the first interface module is used for forwarding the output voltage of the power supply to a first product to be tested;
and the second interface module is used for forwarding the output voltage of the power supply to a second product to be tested.
Optionally, the switching module includes a first switching unit connected with the switching control module, and a second switching unit connected with the first switching unit, the power supply, the first interface module and the second interface module respectively;
the first switch unit is used for switching on or off according to the switching control signal and outputting a switch signal;
and the second switch unit is used for disconnecting the power supply from the first interface module according to the switch signal and connecting the power supply to the second interface module, or connecting the power supply to the first interface module according to the switch signal.
Optionally, the switching control module includes a trigger U1;
the first pin of the trigger U1 is connected with the switching module, the second pin of the trigger U1 is connected with the fifth pin, the third pin of the trigger U1 is connected with the main control module, the fourth pin, the sixth pin and the seventh pin of the trigger U1 are all grounded, and the fourteenth pin of the trigger U1 is connected with the power supply.
Optionally, the first switching unit includes a field effect transistor Q5;
the grid electrode of the field effect tube Q5 is respectively connected with one end of a resistor R6 and one end of a resistor R7, the other end of the resistor R6 is connected with a first pin of a trigger U1, the other end of the resistor R7 and the source electrode of the field effect tube Q5 are grounded, and the drain electrode of the field effect tube Q5 is connected with a second switch unit.
Optionally, the second switching unit includes a relay K1;
the second pin of the relay K1 is connected with the drain electrode of the field effect transistor Q5 through a resistor R8, the first pin and the third pin of the relay K1 are both connected with a power supply, the fourth pin of the relay K1 is connected with the first interface module, and the fifth pin of the relay K1 is connected with the second interface module.
Optionally, the first interface module includes an interface DC1;
the first pin of the interface DC1 is connected with the fourth pin of the relay K1, and the second pin of the interface DC1 is grounded.
Optionally, the second interface module comprises an interface DC2;
the first pin of the interface DC2 is connected with the fifth pin of the relay K1, and the second pin of the interface DC2 is grounded.
Optionally, the test power supply switching circuit further comprises a filtering module respectively connected with the power supply and the switching module;
and the filtering module is used for filtering the output voltage of the power supply.
In a second aspect, the present utility model provides a test power switching apparatus, comprising:
a circuit board;
the test power supply switching circuit is arranged on the circuit board.
The utility model provides a test power supply switching circuit and a device, which are used for testing a product needing to be tested by an external power supply. Therefore, on the basis of connecting the first product to be tested and the second product to be tested, the utility model automatically controls the power supply to be switched from the first product to be tested to the second product to be tested, does not need to wait until the first product to be tested is tested, then manually switches the second product to be tested, reasonably utilizes the time of testing the products to be tested to replace the products to be tested, automatically switches the power supply to be connected, reduces the time of switching the products to be tested, and improves the testing efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a first embodiment of a test power switching circuit according to the present utility model;
FIG. 2 is a schematic circuit diagram of an embodiment of a test power switching circuit according to the present utility model.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, in the present utility model, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a device or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such device or system. Without further limitation, an element defined by the phrase "comprising … …" does not exclude that an additional identical element is present in a device or system comprising the element.
In addition, in the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "connected" may be either a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.
In the present utility model, suffixes such as "module", "part" or "unit" used for representing elements are used only for facilitating the description of the present utility model, and have no specific meaning per se. Thus, "module," "component," or "unit" may be used in combination. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
In view of the technical problems that when products requiring external power supply testing are tested, the time for switching different products to be tested is longer and the efficiency is lower, the utility model provides a test power supply switching circuit, and the general thought is as follows:
the test power supply switching circuit comprises a main control module, a switching control module and a switching module which are sequentially connected, wherein the switching module is also connected with a power supply, a first product to be tested and a second product to be tested; the main control module is used for generating a switching signal; the switching control module is used for outputting a switching control signal according to the switching signal; the switching module is used for switching the power supply into the first product to be tested, disconnecting the power supply from the first product to be tested according to the switching control signal, and switching the power supply into the second product to be tested.
The utility model provides a test power supply switching circuit, which is used for testing a product needing to be tested by an external power supply, wherein a first product to be tested is connected with a power supply through a switching module, a switching signal is generated through a main control module, a switching control signal is generated through a switching control module according to the switching signal, the switching module is controlled to disconnect the power supply from the first product to be tested, and the power supply is connected with a second product to be tested. Therefore, on the basis of connecting the first product to be tested and the second product to be tested, the utility model automatically controls the power supply to be switched from the first product to be tested to the second product to be tested, does not need to wait until the first product to be tested is tested, then manually switches the second product to be tested, reasonably utilizes the time of testing the products to be tested to replace the products to be tested, automatically switches the power supply to be connected, reduces the time of switching the products to be tested, and improves the testing efficiency.
The test power switching circuit and the test power switching device according to the present utility model will be described in detail with reference to the accompanying drawings and detailed description.
Example 1
Referring to fig. 1, fig. 1 is a schematic connection diagram of a first embodiment of a test power switching circuit according to the present utility model; the embodiment provides a test power supply switching circuit, which comprises a main control module, a switching control module and a switching module which are sequentially connected, wherein the switching module is also connected with a power supply, a first product to be tested and a second product to be tested;
the main control module is used for generating a switching signal;
the switching control module is used for outputting a switching control signal according to the switching signal;
the switching module is used for switching the power supply into the first product to be tested, disconnecting the power supply from the first product to be tested according to the switching control signal, and switching the power supply into the second product to be tested.
In this embodiment, the main control module may be a rack board card of the test rack, and the main control module may generate a switching signal according to a product testing program stored in the main control module, after the current product to be tested is tested, and control the switching module to disconnect the current product to be tested from the power supply and connect the power supply to the next product to be tested according to the switching signal by controlling the switching module, where the first product to be tested is the current product to be tested, and the second product to be tested is the next product to be tested; it can be understood that in the testing process, the first product to be tested can be put into the testing rack for testing, when the first product to be tested is tested, the second product to be tested can be put into the testing rack, when the first product to be tested is tested, the power supply is automatically switched to the second product to be tested for testing, when the second product to be tested is tested, the first product to be tested can be taken out from the testing rack, and then the next product to be tested is put into the testing rack for switching testing, so that the switching of the products to be tested after the current product to be tested is avoided, and the time for switching the products to be tested is saved.
In the specific implementation, firstly, a first product to be tested is tested, a power supply is connected to the first product to be tested through a switching module, and at the moment, a main control module does not output a switching signal; and placing the second product to be tested into the test rack, generating a switching signal through the main control module after the first product to be tested is tested, outputting the switching control signal through the switching control module according to the switching signal, controlling the switching module to disconnect the power supply from the first product to be tested, connecting the power supply into the second product to be tested, and starting to test the second product to be tested.
The embodiment provides a test power supply switching circuit, when testing a product needing external power supply test, a first product to be tested is connected with a power supply through a switching module, then a switching signal is generated after the first product to be tested is tested through a main control module, a switching control signal is generated through a switching control module according to the switching signal, the switching module is controlled to disconnect the power supply from the first product to be tested, and the power supply is connected with a second product to be tested. Therefore, according to the embodiment, on the basis of connecting the first product to be tested and the second product to be tested, the automatic control power supply is switched from the first product to be tested to the second product to be tested, the switching of the second product to be tested is not needed to be performed manually after the first product to be tested is tested, the product to be tested is replaced by reasonably utilizing the time of testing the product to be tested, the power supply is switched in automatically, the time of switching the product to be tested is reduced, and the testing efficiency is improved.
Example two
Further, referring to fig. 2, fig. 2 is a schematic circuit diagram of an embodiment of a test power supply switching circuit according to the present utility model, and based on the first embodiment, the present utility model provides a test power supply switching circuit, where the test power supply switching circuit further includes a first interface module connected to the switching module and a first product to be tested, and a second interface module connected to the switching module and a second product to be tested, respectively;
the switching module is also used for connecting the power supply to the first interface module, disconnecting the power supply from the first interface module according to the switching control signal and connecting the power supply to the second interface module;
the first interface module is used for forwarding the output voltage of the power supply to a first product to be tested;
and the second interface module is used for forwarding the output voltage of the power supply to a second product to be tested.
In this embodiment, the first interface module and the second interface module are the same interface module, and are used for connecting similar products to be tested, and connecting the output voltage of the power supply to the products to be tested.
In the specific implementation, a power supply is connected to a first interface module through a switching module, the output voltage of the power supply is forwarded to a first product to be tested through the first interface module, and the first product to be tested is tested; and after the first product to be tested is tested, generating a switching signal through the main control module, outputting the switching control signal through the switching control module according to the switching signal, controlling the switching module to disconnect the power supply from the first interface module, connecting the power supply to the second interface module, connecting the output voltage of the power supply to the second product to be tested through the second interface module, and starting to test the second product to be tested.
Specifically, as shown in fig. 2, the switching control module includes a trigger U1;
the first pin 1 of the trigger U1 is connected with the switching module, the second pin 2 of the trigger U1 is connected with the fifth pin 5, the third pin 3 of the trigger U1 is connected with the main control module, the fourth pin 4, the sixth pin 6 and the seventh pin 7 of the trigger U1 are all grounded GND, and the fourteenth pin 14 of the trigger U1 is connected with the power supply VDD.
In this embodiment, as shown in fig. 2, the power supply VDD is a dc power supply, and the output voltage of the power supply VDD is 12V; the switching signal clock_input includes a high level and a low level, and is low when the first product to be tested is being tested, and is converted to high level after the first product to be tested is completed; the trigger U1 may be an edge D trigger, and the type of the trigger U1 may be selected according to actual usage requirements, for example, an edge trigger with a type of CD4013 may be selected, when the 1CP of CD4013 detects a rising edge of an input signal for the first time and the 1D of CD4013 is low, the 1Q output of CD4013 is low, the 1Q/output of CD4013 is high and the 1D of CD4013 connected thereto is high; when the rising edge of the next input signal is detected by the 1CP of the CD4013, at this time, the 1D of the CD4013 is at a high level, the 1Q of the CD4013 outputs a high level, the 1Q/output of the CD4013 is at a low level, and the 1D of the CD4013 changes to a low level, so that the CD4013 can switch between the high level and the low level and output the switching control signal when the rising edge of the input signal is detected by the 1CP each time.
Specifically, as shown in fig. 2, the switching module includes a first switching unit connected to the switching control module, and a second switching unit connected to the first switching unit, the power supply, the first interface module, and the second interface module, respectively;
the first switch unit is used for switching on or off according to the switching control signal and outputting a switch signal;
and the second switch unit is used for disconnecting the power supply from the first interface module according to the switch signal and connecting the power supply to the second interface module, or connecting the power supply to the first interface module according to the switch signal.
In this embodiment, the switching signal is an on signal or an off signal of the first switching unit, and when the first switching unit is turned on, the second switching unit disconnects the power supply from the first interface module and connects the power supply to the second interface module; when the first switch unit is turned off, the second switch unit accesses the power supply to the first interface module.
Specifically, as shown in fig. 2, the first switching unit includes a field effect transistor Q5;
the grid electrode of the field effect tube Q5 is respectively connected with one end of a resistor R6 and one end of a resistor R7, the other end of the resistor R6 is connected with the first pin 1 of the trigger U1, the other end of the resistor R7 and the source electrode of the field effect tube Q5 are both grounded GND, and the drain electrode of the field effect tube Q5 is connected with the second switch unit.
In this embodiment, the field effect transistor Q5 is an N-channel MOS (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET, metal Oxide semiconductor field effect transistor).
Specifically, as shown in fig. 2, the second switching unit includes a relay K1;
the second pin 2 of the relay K1 is connected with the drain electrode of the field effect transistor Q5 through a resistor R8, the first pin 1 and the third pin 3 of the relay K1 are both connected with the power supply VDD, the fourth pin 4 of the relay K1 is connected with the first interface module, and the fifth pin 5 of the relay K1 is connected with the second interface module.
In the embodiment, when the field effect transistor Q5 is turned off, the normally closed contact of the relay K1 is closed, and a power supply is connected to the first interface module; when the field effect transistor Q5 is conducted, the normally-closed contact of the relay K1 is disconnected, the normally-open contact is closed, the power supply is disconnected from the first interface module, and the power supply is connected to the second interface module.
Specifically, as shown in fig. 2, the first interface module includes an interface DC1;
the first pin 1 of the interface DC1 is connected to the fourth pin 4 of the relay K1, and the second pin 2 of the interface DC1 is grounded GND.
Specifically, as shown in fig. 2, the second interface module includes an interface DC2;
the first pin 1 of the interface DC2 is connected to the fifth pin 5 of the relay K1, and the second pin 2 of the interface DC2 is grounded GND.
In this embodiment, the interface DC1 and the interface DC2 are the same connector, and can be quickly plugged into the same product to be tested.
In the specific implementation, the power supply is connected with a first product to be tested through an interface DC1, the output voltage of a power supply output by a normally closed contact of a relay K1 is received, the output voltage of the power supply is connected into the first product to be tested, and the first product to be tested is tested; the second product to be tested is connected through the interface DC2, after the first product to be tested is tested, the output switching signal of the main control module is converted from low level to high level, the switching control signal is output through the trigger U1 according to the rising edge of the switching signal, the normally closed contact of the control relay K1 is opened through the switching control signal conduction of the field effect transistor Q5, the normally open contact is closed, the power supply is disconnected with the interface DC1, the power supply is connected to the interface DC2, the output voltage of the power supply is connected to the second product to be tested through the interface DC2, and the second product to be tested is tested.
Specifically, the test power supply switching circuit further comprises a filtering module respectively connected with the power supply and the switching module;
and the filtering module is used for filtering the output voltage of the power supply.
In this embodiment, as shown in fig. 2, the filtering module includes a filtering capacitor CE1, where the positive electrode of the filtering capacitor CE1 is respectively connected with the power supply, the first pin 1 of the relay K1, and the third pin 3 of the relay K1.
The embodiment provides a test power supply switching circuit, when testing a product needing external power supply test, a first product to be tested is connected with a power supply through a relay, then a switching signal is generated after the first product to be tested is tested through a main control module, a switching control signal is generated through a trigger according to the switching signal, the working state of the relay is controlled to control a field effect transistor, the power supply is disconnected from the first product to be tested, and the power supply is connected with a second product to be tested. Therefore, according to the embodiment, on the basis of connecting the first product to be tested and the second product to be tested, the automatic control power supply is switched from the first product to be tested to the second product to be tested, the switching of the second product to be tested is not needed to be performed manually after the first product to be tested is tested, the product to be tested is replaced by reasonably utilizing the time of testing the product to be tested, the power supply is switched in automatically, the time of switching the product to be tested is reduced, and the testing efficiency is improved.
Example III
On the basis of the first or second embodiment, the present embodiment provides a test power supply switching device, including:
a circuit board;
the test power supply switching circuit is arranged on the circuit board.
The embodiment provides a test power supply switching device, when testing a product requiring external power supply testing, a first product to be tested is connected with a power supply through a switching module, then a switching signal is generated after the first product to be tested is tested through a main control module, a switching control signal is generated through a switching control module according to the switching signal, the switching module is controlled to disconnect the power supply from the first product to be tested, and the power supply is connected with a second product to be tested. Therefore, according to the embodiment, on the basis of connecting the first product to be tested and the second product to be tested, the automatic control power supply is switched from the first product to be tested to the second product to be tested, the switching of the second product to be tested is not needed to be performed manually after the first product to be tested is tested, the product to be tested is replaced by reasonably utilizing the time of testing the product to be tested, the power supply is switched in automatically, the time of switching the product to be tested is reduced, and the testing efficiency is improved.
It should be noted that, in the embodiment, the specific structure of the test power supply switching circuit refers to the first embodiment or the second embodiment, and since the embodiment adopts all the technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are provided, and will not be described in detail herein.
The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all equivalent structural modifications made by the present description and accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present utility model.
Claims (9)
1. The test power supply switching circuit is characterized by comprising a main control module, a switching control module and a switching module which are sequentially connected, wherein the switching module is also connected with a power supply, a first product to be tested and a second product to be tested;
the main control module is used for generating a switching signal;
the switching control module is used for outputting a switching control signal according to the switching signal;
the switching module is used for switching the power supply into the first product to be tested, disconnecting the power supply from the first product to be tested according to the switching control signal, and switching the power supply into the second product to be tested;
the test power supply switching circuit further comprises a filtering module respectively connected with the power supply and the switching module;
and the filtering module is used for filtering the output voltage of the power supply.
2. The test power switching circuit of claim 1 further comprising a first interface module coupled to the switching module and the first product under test, respectively, and a second interface module coupled to the switching module and the second product under test, respectively;
the switching module is further configured to connect the power supply to the first interface module, disconnect the power supply from the first interface module according to the switching control signal, and connect the power supply to the second interface module;
the first interface module is used for forwarding the output voltage of the power supply to the first product to be tested;
and the second interface module is used for forwarding the output voltage of the power supply to the second product to be tested.
3. The test power switching circuit of claim 2 wherein the switching module includes a first switching unit connected to the switching control module, a second switching unit connected to the first switching unit, the power supply, the first interface module, and the second interface module, respectively;
the first switch unit is used for switching on or off according to the switching control signal and outputting a switch signal;
the second switch unit is configured to disconnect the power supply from the first interface module according to the switch signal, and connect the power supply to the second interface module, or connect the power supply to the first interface module according to the switch signal.
4. A test power supply switching circuit according to claim 3 wherein the switching control module comprises a flip-flop U1;
the first pin of the trigger U1 is connected with the switching module, the second pin of the trigger U1 is connected with the fifth pin, the third pin of the trigger U1 is connected with the main control module, the fourth pin, the sixth pin and the seventh pin of the trigger U1 are all grounded, and the fourteenth pin of the trigger U1 is connected with the power supply.
5. The test power switching circuit of claim 4 wherein the first switching element comprises a field effect transistor Q5;
the grid electrode of the field effect tube Q5 is respectively connected with one end of a resistor R6 and one end of a resistor R7, the other end of the resistor R6 is connected with the first pin of the trigger U1, the other end of the resistor R7 and the source electrode of the field effect tube Q5 are grounded, and the drain electrode of the field effect tube Q5 is connected with the second switch unit.
6. The test power switching circuit according to claim 5, wherein the second switching unit includes a relay K1;
the second pin of the relay K1 is connected with the drain electrode of the field effect tube Q5 through a resistor R8, the first pin and the third pin of the relay K1 are connected with the power supply, the fourth pin of the relay K1 is connected with the first interface module, and the fifth pin of the relay K1 is connected with the second interface module.
7. The test power switching circuit of claim 6 wherein the first interface module includes an interface DC1;
the first pin of the interface DC1 is connected with the fourth pin of the relay K1, and the second pin of the interface DC1 is grounded.
8. The test power switching circuit of claim 6 wherein the second interface module includes an interface DC2;
the first pin of the interface DC2 is connected with the fifth pin of the relay K1, and the second pin of the interface DC2 is grounded.
9. A test power switching apparatus, characterized in that the test power switching apparatus comprises:
a circuit board;
the test power supply switching circuit according to any one of claims 1 to 8 provided on the circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223213537.5U CN219609183U (en) | 2022-11-30 | 2022-11-30 | Test power supply switching circuit and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223213537.5U CN219609183U (en) | 2022-11-30 | 2022-11-30 | Test power supply switching circuit and device |
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| Publication Number | Publication Date |
|---|---|
| CN219609183U true CN219609183U (en) | 2023-08-29 |
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|---|---|---|---|
| CN202223213537.5U Active CN219609183U (en) | 2022-11-30 | 2022-11-30 | Test power supply switching circuit and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219609183U (en) |
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2022
- 2022-11-30 CN CN202223213537.5U patent/CN219609183U/en active Active
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