What kinds of 12v permanent magnet dc motor are there generally?
DC motors can be divided into special Motors, electromagnetic motors and permanent magnetic Motors.
1, special motors are generally unwound, the drive is more complex, as a kind of motor has its own system.
2, electromagnetic Motors due to different excitation methods, their characteristics are also different.
3, permanent magnetic motor performance is similar to electromagnetic parallel motor, starting torque is large, mechanical characteristics are hard, the speed change when the load changes little, suitable for low-power DC drive, such as electric toys, power tools, audio equipment, automotive appliances, etc.. This paper mainly discusses the driving of this kind of micro DC motor with low power, low voltage and small size.
This type of motor has only two leads, which can adjust the power supply voltage or current to adjust the speed, replace the polarity of the two leads, and change the direction of the motor. The drive circuit is controlled by a single chip microcomputer, which generally requires positive and negative inversion and speed adjustment, and should not be too large.
