What are the four lines of the car wiper ?
Scientific knowledge :
The wiper motor can be regarded as a gear motor with positive and negative rotation .
Because there is positive and negative rotation , the circuit is three-phase, and it also involves the reverse position .
Therefore, a set of positive and negative lines is added to make the switch , and most of them are electromagnetic . Three-phase power supply, two-phase switch .
According to the working principle of the automobile wiper motor, the motor wiper motor lines are :
1 . 12V power supply is positive .
2. 12V power supply negative (also called grounding) .
3. high-speed files .
4. Low speed gear .
5. intermittent file.
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