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List of the catalogue of this article:

• 1, What will happen if the carbon brush of the car generator is broken
• 2 、The role of the carbon brush in the generator in the car
• 3, What is a carbon brush and what is its function?

What will happen if the carbon brush of the automobile generator is broken

1. If the carbon brush is broken, it will lead to the rectifier to catch fire and burn. The following is a specific introduction to the carbon brush: Judgment method: The overheating noise is greatly damaged when the electric brush is running. The sparks are large when the electric brush is running. The contact surface between the carbon brush and the slip ring is less than 70%. The pressure of the carbon brush spring is not suitable, etc.

2. According to the fault phenomenon, there is no problem with your generator and battery. The main problem is in the circuit of the whole vehicle. The biggest possibility is a short circuit in the power supply circuit. This phenomenon is relatively dangerous. It is recommended to go to the repair shop to check the circuit of the whole car as soon as possible, and the fire will be completely over.

3. Excessive wear of carbon brushes will lead to a decrease in the operating efficiency of the whole generator. If the worn carbon brush is not replaced in time, the rotor copper sheet may be burned, resulting in damage to the internal parts of the generator.

The role of carbon brush in the generator in the car

Change the current direction (in the rectifier motor, the brush also plays a role in changing To the action).

The function of the carbon brush of automobile generator is to add external current (excitation current) to the rotating rotor (input current) through the carbon brush to generate a magnetic field. You can replace the carbon brush by yourself. The voltage of the generator will affect the power of the carbon brush.

It is used to connect the direct current in the excitation winding in the middle of the generator. To put it simply, the working principle is that at the moment the car starts, the current in the battery first flows through the electric brush to the excitation winding part (rotor) rotated in the middle, and this winding generates a magnetic field.

What is a carbon brush and what is its function?

1. The carbon brush is used in the rotating motor circuit, which is connected to the non-rotating circuit outside the motor. Its application: 1: The rotor winding of the three-phase winding motor, through the slip ring, the carbon brush to the external speed regulation circuit, or the start circuit.2: The rotor (armature) winding of the DC motor is brushed to the external armature power supply through the rectifier carbon.

2. The commuter is composed of an electric brush and a reverter ring, and the carbon brush is a kind of electric brush. Due to the rotation of the rotor, the brush always rubs against the reversing ring, and electric spark erosion will occur at the moment of reversing, so the brush is a consumable part in the DC motor.

3. Carbon brushes are used to transmit signals or energy in the fixed and rotating parts of some motors or generators.

4. The function of the carbon brush is to introduce the rotor coil into the rotor current required for motor operation through the connection sheet on the slip ring. The match and smoothness of the carbon brush and the connection sheet, and the size of the contact surface affect its life and reliability.

5. Simply put, the function of the carbon brush is to rotate the motor, input electrical energy into the coil through the converter, and change the direction of the current.Why is the carbon brush used less and less? Because there is friction in the motor, it will also produce sparks, and its function is to change the direction of the current.