How Ac Voltage Is Produced - MULTIQUIP GA-Series Service Manual

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1) Engine (see engine manual)
The engine running at 3600 rpm (60Hz) creates excitation voltage.
2) Excitation (see page 12)
AC Voltage is produced from
engine. As the magnets pass a set of windings (charge coils) beneath the
flywheel they produce alternating current, (AC).
3) Diode Rectifier AC/DC (see page 13)
A full wave diode rectifier converts the AC voltage to DC voltage.
4) Stator (see page 14)
The DC voltage is sent from the full wave diode rectifier via wires J & K to
excitation winding, which are located in the stator. This produces a magnetic field
in the stator.
5) Rotor creates AC and is converted to DC (see page 15)
Excitation windings on the rotor pass through the magnetic field of the stator
creating AC voltage.
AC voltage in the rotor is then converted to DC voltage by use of full wave diode
rectifiers mounted on the rotor, producing a rotating magnet.
6) AC is produced
The rotating magnetic field passes through the main windings located in the
stator (U1, V1, U2, and V2). These windings provide AC voltage to the
receptacles through a circuit breaker.
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magnets which are located on the flywheel of the
Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM
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