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Charging System
Parts Alternator
generator that uses
mechanical power to
produce electricity
Usually have a preset
output voltage of
13.5-1.!5 volts "C
#oltage regulator
controls the output
voltage of the alternator
Alternator drive $elt
lin%s the engine
cran%shaft pulley with the
alternator pulley
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engine cran%shaft pulley
drives the alternator $elt
Charge &ndicator
ammeter' voltmeter' or
warning light
informs driver of the
charging system condition
(arness
wiring connecting the
parts together into a system
)attery
provides current to startthe vehicle
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provides current to
initially energi*e the
alternator +eld
sta$ili*es the alternator
output
Charging System
,unctions
echarges the $attery after
cran%ing
Supplies the cars electricitywhen the engine is running
Provides an output voltage
slightly higher than the $attery
voltage
Changes the output to meet
varying loads
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Alternator /peration
0wo main parts' rotor and
stator
0he rotor is located in the
center
creates a rotating magnetic
+eld when turned $y the drive$elt
0he stator is a stationary set of
windings surrounding the rotor
output winding in the
alternator
hen the rotor spins' its
strong magnetic +eld cuts across
the stator windings
Current is induced in the statorwindings
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