POWER MOS FET

B3E074000116T01

Function

• Controls the supply voltage to the blower motor according to the gate voltage sent from the climate control unit and adjusts the rotation speed (airflow volume).


1	Power MOS FET
2	Blower relay
3	Blower motor
4	Gate voltage
5	Climate control unit

Construction/Operation

• There are three electrodes: source, gate, and drain electrodes.


1	Gate
2	Drain
3	Source

• The resistance between terminals B and A (between drain and source) changes according to the voltage (gate voltage) applied to terminal E (gate).

• When the gate voltage increases, the resistance between terminals B and A decreases, allowing the current to flow easily.


1	Small current
2	Low gate voltage
3	Large current
4	High gate voltage