POWER METAL OXIDE SEMICONDUCTOR FIELD EFFECT TRANSISTOR (POWER MOS FET) FUNCTION [MANUAL AIR CONDITIONER]

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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).

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Construction/Operation

• There are four electrodes: source, gate, drain and feedback electrodes.

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• The resistance between terminals C and D (between drain and source) changes according to the voltage (gate voltage) applied to terminal A (gate).
• When the gate voltage increases, the resistance between terminals C and D decreases, allowing the current to flow easily.

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