Power Transistor

COMPONENT PARTS

A/C UNIT ASSEMBLY : Power Transistor






- Power transistor, that uses MOS field effect transistor, is adopted for blower fan motor speed control.
NOTE:
A MOS field effect transistor is a transistor in which the gate is composed of a metal-oxide-semiconductor (MOS). Field effect transistor is controlled by voltage, while ordinary transistor is controlled by current. Electrode of field effect transistor is called source, drain, or gate, while electrode of ordinary transistor is called emitter, collector, or base.
- Power transistor continuously controls voltage to blower fan motor (approximately 0 to 16 V), according to gate voltage from A/C auto amp.
- This power transistor does not require HI relay even when the maximum voltage is applied to blower fan motor at HI status, because voltage drop is nominal.