Mazda 2006 MX-5 - Power Metal Oxide Semiconductor Field Effect Transistor (Power Mos Fet) Function; Construction;Operation

CONTROL SYSTEM
07–40–4
POWER METAL OXIDE SEMICONDUCTOR FIELD EFFECT TRANSISTOR (POWER MOS FET) FUNCTION
E5U074000116N01
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).
Construction/Operation
• There are four electrodes: source, gate, drain and feedback electrodes.
• 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.
End Of Sie
B+
IG2
M
POWER MOS FET
CLIMATE
CONTROL
UNIT
FEED
BACK
GATE
VOLTAGE
BLOWER MOTOR
BLOWER
RELAY
E5U740ZS5007
C
D
A
B
C
D
A
B
DRAIN
FEEDBACK
GATE
SOURCE
E5U740ZS5008
C
B
D
A
C
B
D
A
LOW GATE VOLTAGE
HIGH GATE VOLTAGE
SMALL CURRENT
LARGE CURRENT
E5U740ZS5009