Bidirectional silicon controlled rectifier testing device

Abstract

The utility model relates to the technical field of bidirectional silicon controlled rectifier testing, in particular to a bidirectional silicon controlled rectifier testing device, which comprises a storage battery electrically connected with a switch; the anode of the first diode is electrically connected with the anode of the storage battery through a switch, and the cathode of the first diode is connected in parallel with a fixed voltage-stabilizing regulator, an ampere meter and a first capacitor; the output end of the fixed voltage stabilization regulator is connected in parallel with a first resistor, a second resistor, a third resistor, a voltmeter, a second capacitor, a third capacitor and the positive electrode of a second diode; the test end, the trigger end, the voltmeter, the negative electrode of the third diode, the second capacitor, the regulator potentiometer, the third capacitor and the first capacitor are electrically connected with the positive electrode of a fifth diode, and the negative electrode of the fifth diode is electrically connected with the negative electrode of the storage battery through a switch. According to the utility model, the testing flexibility of the device is improved, so that the overall testing efficiency of the device is improved, and meanwhile, the maintenance complexity and cost of the device are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bidirectional thyristor testing, in particular to a bidirectional thyristor testing device. Background Art

[0002] A bidirectional thyristor (SCR) is a semiconductor device that belongs to the rectifier family. It is widely used in the fields of power electronics and power control. SCR is often used for power control and regulation in AC circuits. It can control the direction of current and achieve precise control of power.

[0003] When a problem or fault is found in a circuit, performing a triac test can help determine if the device itself is causing the problem, making it easier to locate and repair the fault.

[0004] The existing thyristor testing methods mainly test a single or a group of thyristors, which cannot cover thyristors with multiple uses or different application scenarios, limiting the flexibility and versatility of the test device. At the same time, different detection methods may be required for different types of devices, which increases the complexity of management and maintenance, resulting in low test efficiency and increased costs and resource investment. Utility Model Content

[0005] In view of this, the utility model proposes a bidirectional thyristor testing device, aiming to solve the problem of how to test a variety of bidirectional thyristors to improve the testing efficiency and reduce the investment cost.

[0006] In one aspect, the utility model provides a bidirectional thyristor testing device, comprising:

[0007] a battery electrically connected to the switch;

[0008] A first diode, whose anode is electrically connected to the positive electrode of the battery through the switch, and whose cathode is connected in parallel with a fixed voltage regulator, an ammeter and a first capacitor;

[0009] The output end of the fixed voltage regulator is connected in parallel with a first resistor, a second resistor, a third resistor, a voltmeter, a second capacitor, a third capacitor and a positive electrode of a second diode;

[0010] Wherein, the third resistor is also electrically connected to a trigger terminal, the second resistor is also electrically connected to a positive electrode of a third diode, and the first resistor is also electrically connected to an adjustment potentiometer;

[0011] The cathode of the second diode is also electrically connected to an ammeter, a fourth resistor and a test terminal in sequence;

[0012] The test end, trigger end, voltmeter, cathode of the third diode, second capacitor, adjustment potentiometer, third capacitor and first capacitor are electrically connected to the anode of the fifth diode respectively, and the cathode of the fifth diode is electrically connected to the cathode of the battery through a switch.

[0013] In some embodiments of the present application, it also includes:

[0014] a fourth diode connected in parallel with the fifth diode;

[0015] A sixth diode, whose anode is electrically connected to the cathode of the fourth diode, and whose cathode is connected in parallel to the fixed voltage regulator, the ammeter and the first capacitor.

[0016] In some embodiments of the present application, a seventh diode is further included, whose anode is electrically connected to the output end of the fixed voltage regulator, and whose cathode is connected in parallel with the second diode, the second capacitor, the second resistor, the voltmeter and the third resistor.

[0017] In some embodiments of the present application, the output end of the fixed voltage regulator is also electrically connected to the adjustment potentiometer.

[0018] Compared with the prior art, the utility model has the beneficial effect that the utility model can test electronic components such as diodes, triodes, MOS tubes, unidirectional thyristors, bidirectional thyristors, IGBTs, LEDs, etc., and the quality of the electronic components can be judged by observing the deflection of the ammeter pointer. Furthermore, the utility model can adapt to thyristors of different models and manufacturers, improve the flexibility of device testing, thereby improving the overall efficiency of device testing, making it suitable for a variety of power electronic applications, while reducing the complexity and cost of device maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0020] Figure 1 A circuit diagram of a bidirectional thyristor testing device provided in an embodiment of the utility model.

[0021] In the figure: 1, battery; 2, test end; 3, trigger end. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0025] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] Combination Figure 1 As shown, a bidirectional thyristor testing device provided in this embodiment includes:

[0027] A battery 1, which is electrically connected to the switch;

[0028] A first diode D1, whose anode is electrically connected to the anode of the battery 1 through the switch, and whose cathode is connected in parallel with a fixed voltage regulator, an ammeter A and a first capacitor C1;

[0029] The output end of the fixed voltage regulator is connected in parallel with a first resistor R1, a second resistor R2, a third resistor R3, a voltmeter V, a second capacitor C2, a third capacitor C3 and a positive electrode of a second diode D2;

[0030] The third resistor R3 is also electrically connected to the trigger terminal 3, the second resistor R2 is also electrically connected to the anode of the third diode D3, and the first resistor R1 is also electrically connected to the adjusting potentiometer RP;

[0031] The cathode of the second diode D2 is also electrically connected to the ammeter A, the fourth resistor R4 and the test terminal 2 in sequence;

[0032] The test terminal 2, the trigger terminal 3, the voltmeter V, the cathode of the third diode D3, the second capacitor C2, the adjustment potentiometer RP, the third capacitor C3 and the first capacitor C1 are electrically connected to the anode of the fifth diode D5 respectively, and the cathode of the fifth diode D5 is electrically connected to the cathode of the battery 1 through a switch.

[0033] Specifically, the diode model in this embodiment is preferably IN4007, and the fixed voltage regulator model is preferably LM317.

[0034] In some embodiments of the present application, it also includes:

[0035] a fourth diode D4 connected in parallel with the fifth diode D5;

[0036] The sixth diode D6 has an anode electrically connected to the cathode of the fourth diode D4, and a cathode connected in parallel to the fixed voltage regulator, the ammeter A and the first capacitor C1.

[0037] In some embodiments of the present application, a seventh diode D7 is further included, whose anode is electrically connected to the output end of the fixed voltage regulator, and whose cathode is connected in parallel with the second diode D2, the second capacitor C2, the second resistor R2, the voltmeter V and the third resistor R3.

[0038] In some embodiments of the present application, the output end of the fixed voltage regulator is also electrically connected to the adjusting potentiometer RP.

[0039] Specifically, the working principle of the bidirectional thyristor test device provided in this embodiment is as follows: after the switch is turned on, the battery 1 provides a 12V DC voltage to the fixed voltage regulator LM317, and the 12V power supply passes through the ammeter A and the fourth resistor R4, and is connected to the test terminal 2 after the fourth resistor R4 limits the current. The output terminal of the fixed voltage regulator LM317 is connected to the third resistor R3, and is contacted with the trigger terminal 3 after the third resistor R3 limits the current. The voltage of the trigger terminal 3 can be changed by adjusting the potentiometer RP to meet the test needs. During the test, the test device can judge the performance of each component by observing the deflection of the pointer of the ammeter A.

[0040] Specifically, the anode 1 pin and cathode 2 pin of the thyristor can be connected to the test terminal 2 for testing. If the pointer of ammeter A deflects when connected to the test terminal 2 for testing, it means that the thyristor has been broken down and damaged. If the pointer does not deflect, use the trigger terminal 3 to trigger it. Generally, high-power thyristors use the negative pole for triggering. When the trigger terminal 3 touches the control electrode 4 pin, the pointer of ammeter A deflects and the thyristor is triggered to turn on, indicating that the thyristor is triggered and turned on well and the thyristor is normal.

[0041] Those skilled in the art can understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bidirectional thyristor testing device, characterized in that: include: a battery electrically connected to the switch; A first diode, whose anode is electrically connected to the positive electrode of the battery through the switch, and whose cathode is connected in parallel with a fixed voltage regulator, an ammeter and a first capacitor; The output end of the fixed voltage regulator is connected in parallel with a first resistor, a second resistor, a third resistor, a voltmeter, a second capacitor, a third capacitor and a positive electrode of a second diode; Wherein, the third resistor is also electrically connected to a trigger terminal, the second resistor is also electrically connected to a positive electrode of a third diode, and the first resistor is also electrically connected to an adjustment potentiometer; The cathode of the second diode is also electrically connected to an ammeter, a fourth resistor and a test terminal in sequence; The test end, trigger end, voltmeter, cathode of the third diode, second capacitor, adjustment potentiometer, third capacitor and first capacitor are electrically connected to the anode of the fifth diode respectively, and the cathode of the fifth diode is electrically connected to the cathode of the battery through a switch.

2. The bidirectional thyristor testing device according to claim 1, characterized in that: Also includes: a fourth diode connected in parallel with the fifth diode; A sixth diode, whose anode is electrically connected to the cathode of the fourth diode, and whose cathode is connected in parallel to the fixed voltage regulator, the ammeter and the first capacitor.

3. The bidirectional thyristor testing device according to claim 2, characterized in that: It also includes a seventh diode, whose anode is electrically connected to the output end of the fixed voltage regulator, and whose cathode is connected in parallel with the second diode, the second capacitor, the second resistor, the voltmeter and the third resistor.

4. The bidirectional thyristor testing device according to claim 3, characterized in that: The output end of the fixed voltage regulator is also electrically connected to the regulating potentiometer.

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