12 volt DC motors with different excitation modes have different characteristics. Generally, the main excitation mode of DC motor is separate and series. And other excitation mode will gradually be eliminated when the electronics industry keeps developing. The main excitation way of DC generators are separated excitation, parallel excitation and compound excitation. At the same time, what we need to know is, domestic 12 volt DC motor model is generally indicated by the capital English Pinyin letters’Arabia digital.

The first part indicate the product code with a capital phonetic letters. The second part is represented by Arabia digital to indicate design serial number. The third part use the Arabic numbers to indicate base code. The fourth part use the digital Arabic numbers to indicate the length code of armature core.

12 volt DC motor is a rotary motor which can convert the direct current into mechanical energy or convert mechanical energy into DC power. It means that the 12 volt DC motor can interconvert electric energy and mechanical energy. When it is operated as a DC motor, electric energy is converted into mechanical energy.

When as a DC generator, it converts the mechanical energy into electrical energy. 12 volt DC motor is composed of stator and rotor. Stator is still when the motor is working. Its main function is to generate magnetic field. It is composed of a base, a main magnetic pole, a reversing polarity, end cover, a bearing, a brush device and etc.

Rotor is running when the motor is working. Its main function is to generate electromagnetic torque and the induced electromotive force. It is a conversion hub of 12 volt DC motor coverting energy, so it is usually called the armature which is composed of a rotating shaft, an armature core, an armature winding, commutator, fan and etc.