CN220207794U - Online test circuit of three-terminal voltage stabilizing circuit - Google Patents
Online test circuit of three-terminal voltage stabilizing circuit Download PDFInfo
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- CN220207794U CN220207794U CN202321429390.5U CN202321429390U CN220207794U CN 220207794 U CN220207794 U CN 220207794U CN 202321429390 U CN202321429390 U CN 202321429390U CN 220207794 U CN220207794 U CN 220207794U
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- 238000012360 testing method Methods 0.000 title claims abstract description 127
- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 32
- 239000003990 capacitor Substances 0.000 claims abstract description 59
- 238000005520 cutting process Methods 0.000 claims abstract description 6
- 230000002159 abnormal effect Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000010355 oscillation Effects 0.000 description 5
- 230000005856 abnormality Effects 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The embodiment of the utility model discloses an on-line test circuit of a three-terminal voltage stabilizing circuit, which comprises the following components: the device comprises a relay control and current control module, an input capacitance control module, an output capacitance control module and a module to be tested; the number of the input capacitance control modules and the output capacitance control modules is at least one; the input capacitance control module comprises an input capacitance; the output capacitance control module comprises an output capacitance; the relay control and current control module is used for providing power supply for the input capacitance control module and the output capacitance control module and controlling a relay control port so as to form a control signal; the input capacitance control module is used for conducting or cutting off a connecting channel between the input capacitance and the module to be tested according to the control signal; and the output capacitor control module is used for conducting or cutting off a connecting channel between the output capacitor and the module to be tested according to the control signal. The test circuit of the embodiment of the utility model can simply and effectively detect whether the three-terminal voltage stabilizing circuit is abnormal or not.
Description
Technical Field
The utility model relates to the technical field of three-terminal voltage stabilizing circuits, in particular to an online test circuit of a three-terminal voltage stabilizing circuit.
Background
The three-terminal voltage stabilizing circuit is the most commonly used voltage converter in the DC conversion circuit, and has the advantages of simple and convenient application. In the actual production process, in order to improve production efficiency, many production enterprises adopt a testing machine to connect a plurality of testing towers of the sorting machine to carry out parallel test on the three-terminal voltage stabilizing circuit, and error connection possibly occurs in the connection process, so that the test result is abnormal, but the situation is difficult to distinguish whether the connection problem causes the abnormality or the three-terminal voltage stabilizing circuit causes the abnormality.
Therefore, it is necessary to design a new circuit to simply and effectively detect whether the three-terminal voltage stabilizing circuit is abnormal or not.
Disclosure of Invention
The utility model aims to provide an on-line test circuit for a three-terminal voltage stabilizing circuit.
In order to solve the technical problems, the aim of the utility model is realized by the following technical scheme: the utility model provides a three terminal voltage stabilizing circuit on-line test circuit, include: the device comprises a relay control and current control module, an input capacitance control module, an output capacitance control module and a module to be tested; the number of the input capacitance control modules and the number of the output capacitance control modules are at least one; the input capacitance control module comprises an input capacitance; the output capacitance control module comprises an output capacitance; the relay control and current control module is used for providing power supply for the input capacitance control module and the output capacitance control module and controlling a relay control port so as to form a control signal; the input capacitance control module is used for conducting or cutting off a connecting channel between the input capacitance and the module to be tested according to the control signal; the output capacitor control module is used for conducting or cutting off a connecting channel between the output capacitor and the module to be tested according to a control signal.
The further technical scheme is as follows: the relay control and current control module comprises a current-voltage control port and a relay control port.
The further technical scheme is as follows: the input capacitance control module comprises an input relay; the input relay is respectively connected with the relay control port, the current and voltage control port and the input capacitor.
The further technical scheme is as follows: the number of the input capacitors is at least one, and each input capacitor is respectively connected with one input relay.
The further technical scheme is as follows: the output capacitance control module comprises an output relay; the output relay is respectively connected with the relay control port, the current and voltage control port and the output capacitor.
The further technical scheme is as follows: the number of the output capacitors is at least one, and each output capacitor is respectively connected with one output relay.
The further technical scheme is as follows: the test circuit also comprises a plurality of paths of parallel test distinguishing circuit modules; the multi-path parallel test distinguishing circuit module comprises a resistor R3 with one end grounded, and the resistor R3 is connected with the current-voltage control port.
The further technical scheme is as follows: the intelligent testing device comprises a relay control module, a current control module and an input pin Kelvin testing module, wherein the input pin Kelvin testing module comprises an input pin Kelvin testing relay, the input pin Kelvin testing relay is connected with the relay control and current control module, and one end of the input pin Kelvin testing relay is connected with the module to be tested.
The further technical scheme is as follows: the test device comprises a relay control module, an output pin Kelvin test module and a test module, wherein the output pin Kelvin test module comprises an output pin Kelvin test relay, the output pin Kelvin test relay is connected with the relay control and current control module, and one end of the output pin Kelvin test relay is connected with the test module to be tested.
The further technical scheme is as follows: the device also comprises a Kelvin test module of the grounding pin; the grounding pin Kelvin test module comprises a grounding pin Kelvin test relay, the grounding pin Kelvin test relay is connected with the relay control and current control module, and one end of the grounding pin Kelvin test relay is connected with the module to be tested.
Compared with the prior art, the utility model has the beneficial effects that: the utility model uses the relay control and current control module to control the conduction or cutoff of the corresponding capacitance and the connecting channel of the module to be tested, and the capacitance values are different, so as to simply and effectively detect whether the three-terminal voltage stabilizing circuit is abnormal or not.
The utility model is further described below with reference to the drawings and specific embodiments.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic block diagram of a three-terminal voltage regulator circuit on-line test circuit provided by an embodiment of the utility model;
fig. 2 is a schematic circuit diagram of an on-line testing circuit of a three-terminal voltage stabilizing circuit according to an embodiment of the present utility model;
fig. 3 is a schematic circuit diagram of an online test circuit of a three-terminal voltage stabilizing circuit according to a second embodiment of the present utility model;
fig. 4 is a schematic circuit diagram of a three-terminal voltage stabilizing circuit on-line testing circuit according to a third embodiment of the present utility model;
the figure identifies the description:
10. a relay control and current control module; 20. an input capacitance control module; 30. an output capacitance control module; 40. a module to be tested; 50. an input pin Kelvin test module; 60. an output pin Kelvin test module; 70. the ground pin Kelvin test module; 80. the multi-path parallel test distinguishes circuit modules.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the 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 understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
Referring to fig. 1, fig. 1 is a schematic block diagram of an on-line test circuit for a three-terminal voltage regulator circuit according to an embodiment of the present utility model; the circuit can be applied to the test process of testing the three-terminal voltage stabilizing circuit, and can simply and effectively detect whether the three-terminal voltage stabilizing circuit is abnormal or not.
Referring to fig. 1, the above-mentioned on-line test circuit for three-terminal voltage stabilizing circuit includes: a relay control and current control module 10, an input capacitance control module 20, an output capacitance control module 30, and a module to be tested 40; the number of the input capacitance control modules 20 and the output capacitance control modules 30 is at least one; the input capacitance control module 20 includes an input capacitance; the output capacitance control module 30 includes an output capacitance; the relay control and current control module 10 is used for providing power supply for the input capacitance control module 20 and the output capacitance control module 30 and controlling a relay control port so as to form a control signal; an input capacitance control module 20 for switching on or off a connection channel between the input capacitance and the module 40 to be tested according to the control signal; the output capacitor control module 30 is configured to turn on or off a connection channel between the output capacitor and the module under test 40 according to the control signal.
In this embodiment, the relay control and current control module 10 is used to provide power to the input capacitance control module 20 and the output capacitance control module 30 and control the relay, and the state of the relay in the input capacitance control module 20 and the output capacitance control module 30 is controlled to further conduct or cut off the connection between the corresponding capacitor and the module 40 to be tested so as to perform online test of the three-terminal voltage stabilizing circuit, and the relay control mode is simple, and the connection between the corresponding capacitor and the module 40 to be tested is conducted or cut off so as to more effectively detect whether the three-terminal voltage stabilizing circuit is abnormal; there is no need to connect multiple test towers for testing.
In one embodiment, referring to fig. 2 to 4, the relay control and current control module 10 includes a current-voltage control port and a relay control port.
The number of the current-voltage control ports can be determined according to the numbers of the input capacitance control module 20, the output capacitance control module 30 and the module to be tested 40, for example, in the second embodiment, a plurality of groups of parallel test boards are provided, each test board is integrated with the input capacitance control module 20, the output capacitance control module 30 and the module to be tested 40, and the number of the current-voltage control ports is determined according to the number of the test boards.
In one embodiment, referring to fig. 2 to 4, the input capacitance control module 20 includes an input relay; the input relay is respectively connected with the relay control port, the current and voltage control port and the input capacitor.
In the first embodiment, the first embodiment is a single-path test mode, the input relay is a relay K2, the relay K2 is connected to an input capacitor C2 with one end grounded, in addition, one terminal pin of the relay K2 is connected to a resistor R2 with one end grounded, and at this time, the relay K2 is controlled to be closed or opened by a relay control port.
In an embodiment, referring to fig. 2 and 4, the number of input capacitors is at least one, and each input capacitor is connected to one input relay respectively.
Referring to fig. 2, in the first embodiment, the number of input capacitors is only one.
Referring to fig. 4, in the third embodiment, the number of input capacitors is greater than one, and in this embodiment, the input capacitors include capacitors C2 and C3 connected in parallel, and the capacitor C2 is connected to the relay K6; the capacitor C3 is connected with the relay K2; in the third embodiment, on the basis of the first embodiment, one terminal pin of the relay K6 is connected to the resistor R4 with one terminal grounded, and at this time, the relay K6 is controlled to be closed or opened by the relay control port.
Specifically, the capacitance values of the three states are respectively tested on the module to be tested 40 by the independent control and parallel combination of the two capacitors C2 and C3, so as to screen out the products which generate oscillation in the range.
In one embodiment, referring to fig. 2 to 4, the output capacitance control module 30 includes an output relay; the output relay is respectively connected with the relay control port, the current and voltage control port and the output capacitor.
In the first embodiment, the first embodiment is a single-path test mode, the output relay is a relay K1, the relay K1 is connected to an input capacitor C1 with one end grounded, in addition, one of the terminal pins of the relay K1 is connected to a resistor R1 with one end grounded, and at this time, the relay K1 is controlled to be closed or opened by a relay control port.
In an embodiment, referring to fig. 2 and fig. 4, the number of output capacitors is at least one, and each output capacitor is connected to one output relay respectively.
Referring to fig. 2, in the first embodiment, the number of output capacitors is only one.
Referring to fig. 4, in the third embodiment, the number of output capacitors is greater than one, and in the third embodiment, the input capacitor includes two capacitors C1 connected in parallel, wherein one capacitor C1 is connected to the relay K7; the other capacitor C1 is connected with the relay K1; in the third embodiment, on the basis of the first embodiment, one terminal pin of the relay K7 is connected to the resistor R4 with one terminal grounded, and at this time, the relay K7 is controlled to be closed or opened by the relay control port.
Specifically, the capacitance values of the three states are respectively tested on the module to be tested 40 by the independent control and parallel combination of the two capacitors C1, so as to screen out the products which generate oscillation in the range.
Of course, in actual use, the number of capacitors in the input capacitor control module 20 can be increased according to actual situations, the capacitors are respectively connected with independently controlled relays, and the capacitors are in parallel connection; similarly, the number of capacitors in the output capacitor control module 30 can be increased according to actual situations, and the capacitors are respectively connected with the relays which are independently controlled and belong to a parallel connection relationship; the number of capacitances in the output capacitance control module 30 may not be consistent with the number of capacitances in the input capacitance control module 20.
Referring to fig. 3 and fig. 4, for the second embodiment and the third embodiment, the above-mentioned three-terminal voltage stabilizing circuit on-line testing circuit 80 is characterized by further comprising a multi-path parallel testing distinguishing circuit module 80; the multi-path parallel test distinguishing circuit module comprises a resistor R3 with one end grounded, and the resistor R3 is connected with the current-voltage control port.
In the second embodiment and the third embodiment, the current voltage control port provides current for V1, a certain voltage is generated through a resistor with a certain resistance value, different parallel plates are welded with resistors with different resistance values to obtain different voltages, and the different parallel plates are used for distinguishing different test plates, namely the module 40 to be tested, in order to prevent self-oscillation of the three-terminal voltage stabilizer caused by different input capacitors and output capacitors, different capacitors are required to be connected during testing, and the corresponding capacitors are connected and disconnected through controlling the relays K1 and K2.
Referring to fig. 2 to 4, when testing a small current such as a quiescent current, it is necessary to disconnect the capacitor C1 and the capacitor C2 to prevent the discharge of the electric energy stored in the capacitor from affecting the parameter test. When judging whether the Kelvin connection between the test clamp and the tested object is normal, V2 provides a certain voltage value, V3 is measured, and the measured value is close to the value added by V2 to indicate good contact and large difference indicates bad contact.
In an embodiment, referring to fig. 1 to 4, the above-mentioned three-terminal voltage stabilizing circuit on-line test circuit further includes an input pin kelvin test module 50, the input pin kelvin test module 50 includes an input pin kelvin test relay, the input pin kelvin test relay is connected with the relay control and current control module 10, and one end of the input pin kelvin test relay is connected with the module to be tested.
The input pin Kelvin test relay described above includes relay K5.
In an embodiment, referring to fig. 1 to 4, the above-mentioned three-terminal voltage stabilizing circuit on-line test circuit further includes an output pin kelvin test module 60, the output pin kelvin test module 60 includes an output pin kelvin test relay, the output pin kelvin test relay is connected with the relay control and current control module 10, and one end of the output pin kelvin test relay is connected with the module to be tested.
The output pin Kelvin test relay comprises a relay K3.
In an embodiment, referring to fig. 1 to 4, the above-mentioned three-terminal voltage regulator circuit on-line test circuit further includes a ground pin kelvin test module 70; the ground pin kelvin test module 70 includes a ground pin kelvin test relay connected with the relay control and current control module 10, and one end of the ground pin kelvin test relay is connected with the module to be tested.
The output pin Kelvin test relay described above includes relay K4.
Referring to fig. 2 and fig. 4, in the first embodiment, the test is performed on a single module to be tested 40, in the second embodiment, the test is performed on a plurality of modules to be tested 40, and in the third embodiment, the input and output tests are performed on a single module to be tested 40 by adopting different capacitance values. In these embodiments, the Kelvin function detection of each pin is performed on the module to be tested 40, so as to ensure that the test fixture is well contacted with Kelvin of the product, and ensure that the parameters are Kelvin test mode. In the process of testing multiple paths or testing different capacitors, current is required to be provided for V1 through a current-voltage control port so as to generate certain voltage through resistors with certain resistance values, and different parallel plates are welded with resistors with different resistance values to obtain different voltages for distinguishing different test plates.
The three-terminal voltage stabilizer of the circuit of the first to third embodiments can generate self-excitation oscillation under the influence of different input capacitance, different output capacitance and different specific application conditions in the practical application process, the traditional test is only to connect the typical value capacitance for testing, some test conditions for generating oscillation are easy to be missed, the tester is connected with the capacitance in a certain range for testing, some oscillation products in the three-terminal voltage stabilizer can be screened, and the use of customers is met. In actual production, in order to improve production efficiency, many production enterprises adopt a testing machine to connect a plurality of testing towers of a sorting machine for parallel testing, and in the connection process, abnormal testing results can be generated and are difficult to distinguish, and the circuit from one to three in the embodiment can judge whether the connection is wrong by only checking whether the values of the two are different by welding different resistors, namely the resistor R3, on a group of different testing boards which are connected in parallel and loading the same current on the resistor during testing.
According to the three-terminal voltage stabilizing circuit on-line test circuit, the relay control and current control module 10, the input capacitance control module 20, the output capacitance control module 30 and the module to be tested 40 are arranged, and the relay control and current control module 10 is utilized to control the conduction or cutoff of the corresponding capacitance and the connecting channel of the module to be tested 40, so that the difference of capacitance values is realized, and the abnormality of the three-terminal voltage stabilizing circuit is simply and effectively detected.
While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a three terminal voltage stabilizing circuit on-line test circuit which characterized in that includes: the device comprises a relay control and current control module, an input capacitance control module, an output capacitance control module and a module to be tested; the number of the input capacitance control modules and the number of the output capacitance control modules are at least one; the input capacitance control module comprises an input capacitance; the output capacitance control module comprises an output capacitance; the relay control and current control module is used for providing power supply for the input capacitance control module and the output capacitance control module and controlling a relay control port so as to form a control signal; the input capacitance control module is used for conducting or cutting off a connecting channel between the input capacitance and the module to be tested according to the control signal; the output capacitor control module is used for conducting or cutting off a connecting channel between the output capacitor and the module to be tested according to a control signal.
2. The three terminal voltage regulator circuit of claim 1, wherein the relay control and current control module comprises a current voltage control port and a relay control port.
3. The three-terminal voltage regulator circuit on-line test circuit of claim 2, wherein the input capacitance control module comprises an input relay; the input relay is respectively connected with the relay control port, the current and voltage control port and the input capacitor.
4. The on-line test circuit of three-terminal voltage stabilizing circuit according to claim 3, wherein the number of the input capacitors is at least one, and each input capacitor is respectively connected with one input relay.
5. The on-line test circuit of a three-terminal voltage regulator circuit of any one of claims 2 to 4, wherein the output capacitance control module comprises an output relay; the output relay is respectively connected with the relay control port, the current and voltage control port and the output capacitor.
6. The on-line test circuit of three-terminal voltage stabilizing circuit according to claim 5, wherein the number of the output capacitors is at least one, and each output capacitor is respectively connected with one output relay.
7. The on-line test circuit of a three-terminal voltage stabilizing circuit according to claim 2, further comprising a multi-path parallel test distinguishing circuit module; the multi-path parallel test distinguishing circuit module comprises a resistor R3 with one end grounded, and the resistor R3 is connected with the current-voltage control port.
8. The three-terminal voltage regulator circuit on-line test circuit of claim 1, further comprising an input pin kelvin test module, the input pin kelvin test module comprising an input pin kelvin test relay, the input pin kelvin test relay being connected to the relay control and current control module, one end of the input pin kelvin test relay being connected to the module to be tested.
9. The three-terminal voltage stabilizing circuit on-line testing circuit according to claim 1, further comprising an output pin kelvin testing module, wherein the output pin kelvin testing module comprises an output pin kelvin testing relay, the output pin kelvin testing relay is connected with the relay control and current control module, and one end of the output pin kelvin testing relay is connected with the module to be tested.
10. The three-terminal voltage stabilizing circuit on-line testing circuit according to claim 1, further comprising a ground pin kelvin testing module; the grounding pin Kelvin test module comprises a grounding pin Kelvin test relay, the grounding pin Kelvin test relay is connected with the relay control and current control module, and one end of the grounding pin Kelvin test relay is connected with the module to be tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321429390.5U CN220207794U (en) | 2023-06-06 | 2023-06-06 | Online test circuit of three-terminal voltage stabilizing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321429390.5U CN220207794U (en) | 2023-06-06 | 2023-06-06 | Online test circuit of three-terminal voltage stabilizing circuit |
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| Publication Number | Publication Date |
|---|---|
| CN220207794U true CN220207794U (en) | 2023-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321429390.5U Active CN220207794U (en) | 2023-06-06 | 2023-06-06 | Online test circuit of three-terminal voltage stabilizing circuit |
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| Country | Link |
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| CN (1) | CN220207794U (en) |
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- 2023-06-06 CN CN202321429390.5U patent/CN220207794U/en active Active
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