Introduction of Micro DC Motor

Micro DC motor refers to a mechatronic transmission mechanism with a voltage below 24v and a small size, such as 38mm, including a DC motor and a reducer, also known as a micro DC gear motor, usually referred to as a micro DC motor; micro DC motor The difference from gear reduction is that the output or input is a rotating motor with DC power, and the reducer (gearbox) is the same; the types of micro DC motors can be divided into special motors, electromagnetic motors and permanent magnet motors:

1. Special motors generally have no windings, and the transmission is more complicated. As a kind of motor, it has its own system.

2. Electromagnetic motors are different due to the excitation method.

3. The performance of the permanent magnet motor is similar to that of the electromagnetic shunt motor, the starting torque is large, the mechanical characteristics are hard, and the speed changes little when the load changes. It is suitable for low-power DC drives, such as electric toys, electric tools, audio equipment, Automotive electrical appliances, etc.

Micro DC motors can be divided into brushed DC geared motors and brushless DC geared motors according to their structure and performance characteristics. The two are different and applied to different products; in practical applications, the performance and life of brushless DC geared motors are the same. To be superior to brushed DC geared motors, this article will not describe them. The selection principle of micro DC motor: the faster the speed, the smaller the torque, and vice versa; the speed, voltage and transmission ratio of the reducer should be known in detail when selecting the type.

Micro DC motors are used in some small products and tools, such as toys, electronic products, personal care tools, smart home, instrumentation, office equipment, household appliances, digital products and other fields.