Micro DC motor is a miniaturized design of DC motor, which usually consists of a rotating motor and a reduction gear. It is characterized by versatility, high efficiency, and smooth operation, and is widely used in a variety of small mechanical devices.
Connecting the power supply
1. Selection of suitable power supply
Micro DC motor needs DC power supply. Generally, we use 2 dry batteries or a lithium battery as the power supply. It should be noted that the voltage of the battery should be compatible with the rated voltage of the motor to avoid burning the motor.
2. Connect the power cord
Connect the positive pole of the power cord to the positive pole of the motor, and the negative pole of the power cord to the negative pole of the motor. For small motors, we can use Dupont wire to connect with the motor.
Controlling motor speed and direction
1. Control motor speed
The speed of the micro DC motor can be controlled by changing the voltage of the power supply. Generally, the higher the speed, the higher the voltage. If you need to control the speed of the motor, you can use a varistor or controller to reduce the voltage and thus reduce the speed of the motor.
2. Controlling motor direction
To control the direction of the motor, an H-bridge circuit is used. By changing the way the circuit is energized, it is possible to control the motor forward and reverse. Also, the polarity of the motor can be changed to control the motor forward and reverse.
Cautions
1. The motor cannot run for a long time
Due to the high rotational speed of the motor, prolonged operation will produce a high temperature, which is prone to motor burnout. Therefore, when using the motor, you need to pay attention to the running time of the motor to avoid overuse.
2. Need for protective measures
When working, you need to pay attention to the wiring of the motor to avoid short circuits and excessive current, and you also need to pay attention to the protection of the motor with a protective cover to prevent the motor parts from being damaged.
Through the above narrative, I believe we have a deeper understanding of the basic concepts and use of micro DC motor. When using it, you must pay attention to the voltage of the power supply used, the correct connection line, the running time of the motor, the protection and control of the motor's speed and direction to ensure safety and stability.
