Relay control circuit board

Abstract

The utility model discloses a relay control circuit board, the circuit board is provided with a relay 1, a relay 2, a recoverable fuse and two diodes, the normally closed pin of the relay 1 and the normally closed pin of the relay 2 are connected and are connected to a pin 1, and the normally open pin of the relay 1 and the normally open pin of the relay 2 are connected and are connected to a pin 2. A common pin of the first relay is connected with a resettable fuse in series and connected to a third pin, a common pin of the second relay is connected to a fourth pin, a pin at one end of a coil of the first relay and a pin at one end of a coil of the second relay are connected and connected to a sixth pin, pins at the other ends of the coils of the first relay and the second relay are connected with two ends of two diodes connected in series respectively, and a fifth pin is connected to a series connection point of the two diodes. According to the utility model, the problem that the actual power of the motor is limited by the voltage and current output by the circuit board is solved, the isolation of the control circuit and the output circuit can be realized, the normal and stable actual power of the motor is ensured, the application prospect is wide, and the popularization and application are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic circuits, in particular to a relay control circuit board. Background Art

[0002] At present, traditional relays rely on physical contact of contacts to conduct or disconnect a circuit, which can cause contact wear and contamination over time, thereby affecting the reliability of the circuit. And existing high-quality relay control circuit boards usually require the use of expensive components and materials. At the same time, compared with other types of switching elements (such as transistors or integrated circuits), relays are usually larger in size, which is a problem in applications with limited space and will also increase the overall cost. Therefore, there is an urgent need to develop a relay control circuit board to solve the above technical problems.

[0003] In view of this, the present utility model is specifically proposed. Summary of the Utility Model

[0004] The purpose of the present utility model is to provide a relay control circuit board, which solves the problem that the voltage and current output by the circuit board will limit the actual power of the motor. Through the cooperation of the present utility model, isolation between the control circuit and the output circuit can be achieved, ensuring that the actual power of the motor is normal and stable, having broad application prospects and being conducive to popularization and application.

[0005] To achieve the above purpose, a relay control circuit board provided by the present utility model includes a circuit board, on which there are a first relay, a second relay, a resettable fuse and two diodes. The normally closed pins of the first relay and the second relay are connected and connected to pin 1. The normally open pins of the first relay and the second relay are connected and connected to pin 2. The common pin of the first relay is connected in series with the resettable fuse and connected to pin 3. The common pin of the second relay is connected to pin 4. One end pins of the coils of the first relay and the second relay are connected and connected to pin 6, and the other end pins are respectively connected to both ends of two serially connected diodes, and pin 5 is connected to the series connection point of the two diodes.

[0006] Preferably, the first relay and the second relay are encapsulated relays.

[0007] Preferably, the size of the circuit board is 42mm * 27mm.

[0008] Preferably, the circuit board is a double-layer wiring circuit board with mirror wiring on both the front and back sides.

[0009] A relay control circuit board provided by the present utility model has the following beneficial effects.

[0010] 1. The utility model solves the problem that the voltage and current output by the circuit board will limit the actual power of the motor. Through the cooperation of the utility model, the control circuit and the output circuit can be isolated, ensuring that the actual power of the motor is normal and stable.

[0011] 2. The utility model uses a packaged relay, which will not have problems of contact wear and pollution, ensuring the reliability of the circuit.

[0012] 3. The utility model adopts inexpensive relays, diodes and resettable fuses, and integrates them on a small circuit board with a size of 42mm * 27mm. In some application scenarios, such as those requiring isolation, low power consumption or simple control logic, it is a very economical and practical choice with high usability.

[0013] 4. The utility model adopts a double-layer wiring circuit board with mirror wiring on both the front and back sides, which reduces the overall size required for the circuit board while improving circuit performance, reducing signal interference and electromagnetic compatibility problems, and being able to dissipate heat better. The double-layer wiring circuit board can utilize the space on both sides to disperse heat, helping to improve the heat dissipation efficiency of the entire circuit board, thereby improving the stability and lifespan of the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 FIG. is a schematic structural diagram of a relay control circuit board provided by the utility model;

[0015] Figure 2 FIG. is a circuit diagram of a relay control circuit board provided by the utility model.

[0016] In the figure:

[0017] 1. Relay 1 2. Relay 2 3. Resettable fuse 4. Diode 5. Circuit board DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following further describes the present utility model in conjunction with specific embodiments and the accompanying drawings to facilitate understanding of the content of the present utility model.

[0019] Such as Figure 1 - Figure 2As shown in the figure, they are respectively the structural schematic diagram and circuit diagram of a relay control circuit board provided by the present utility model. The relay control circuit board includes a circuit board 5, on which a first relay 1, a second relay 2, a resettable fuse 3 and two diodes 4 are provided. The normally closed pins of the first relay 1 and the second relay 2 are connected and connected to pin 1. The normally open pins of the first relay 1 and the second relay 2 are connected and connected to pin 2. The common pin of the first relay 1 is connected in series with the resettable fuse 3 and connected to pin 3. The common pin of the second relay 2 is connected to pin 4. One end pins of the coils of the first relay 1 and the second relay 2 are connected and connected to pin 6, and the other end pins are respectively connected to both ends of the two serially connected diodes 4. Pin 5 is connected to the series connection point of the two diodes 4. The first relay 1 and the second relay 2 are encapsulated relays. The size of the circuit board 5 is 42mm * 27mm. The circuit board 5 is a double-layer wiring circuit board with mirror wiring on both the front and back sides.

[0020] The working principle of the present utility model is as follows:

[0021] The original low voltage output by the circuit board is used as the control voltage for controlling the operation of the relay coil, and another voltage supply is used as the output voltage for the operation of the motor. By reversing the control voltage and the unidirectional conduction property of the double diodes 4, the attraction of the contacts of one of the relays is controlled. Through the cooperation of the circuit, finally, the direction of the output voltage is the same as the direction of the control voltage, completing the regulated output and commutation control of the motor.

[0022] The present utility model solves the problem that the voltage and current output by the circuit board will limit the actual power of the motor. Through the cooperation of the present utility model, the isolation between the control circuit and the output circuit can be realized, ensuring that the actual power of the motor is normal and stable. The encapsulated relays used in the present utility model will not have problems of contact wear and pollution, ensuring the reliability of the circuit. The present utility model uses inexpensive relays, diodes 4 and resettable fuses 3, and integrates them on a small circuit board of 42mm * 27mm. In some application scenarios, such as those requiring isolation, low power consumption or simple control logic, it is a very economical and practical choice with high usability. The present utility model adopts a double-layer wiring circuit board with mirror wiring on both the front and back sides, which reduces the overall size required for the circuit board while improving the circuit performance, reducing signal interference and electromagnetic compatibility problems, and being able to dissipate heat better. The double-layer wiring circuit board can utilize the space on both sides to disperse heat, which helps to improve the heat dissipation efficiency of the entire circuit board, thereby improving the stability and lifespan of the circuit.

[0023] In this article, specific examples are used to elaborate on the utility model concept in detail. The description of the above embodiments is only used to help understand the core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art, any obvious modifications, equivalent replacements or other improvements made without departing from the concept of the utility model shall be included within the protection scope of the present utility model.

Claims

1. A relay control circuit board, characterized in that, It includes a circuit board, on which there are Relay 1, Relay 2, a resettable fuse and two diodes. The normally closed pins of Relay 1 and Relay 2 are connected and connected to Pin 1. The normally open pins of Relay 1 and Relay 2 are connected and connected to Pin 2. The common pin of Relay 1 is connected in series with the resettable fuse and connected to Pin 3. The common pin of Relay 2 is connected to Pin 4. One end pins of the coils of Relay 1 and Relay 2 are connected and connected to Pin 6, and the other end pins are respectively connected to both ends of the two series-connected diodes. Pin 5 is connected to the series connection point of the two diodes.

2. The relay control circuit board according to claim 1, characterized in that, Relay 1 and Relay 2 are encapsulated relays.

3. A relay control circuit board according to claim 2, characterized in that, The size of the circuit board is 42mm * 27mm.

4. A relay control circuit board according to claim 3, characterized in that, The circuit board is a double-layer wiring circuit board with mirror wiring on both the front and back sides.

Images