Robin LG072 Service Manual page 23

5 - 2 - 3 BRUSHES
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~.
An exciting current is supplied from the AVR to the rotor.
The brushes are made of carbon and the brush-holders of
'
plastic. It is necessary to keep the contact pressure between
the brushes and slip rings within specific limits. Therefore,
care must be taken about brush length. (See 9-3 BRUSHES.)
5-2-4 AVR (AUTOMATIC VOLTAGE REGULATOR)
The automatic voltage regulator employs an electronic cir-
cuit to automatically reglate voltage.
Fig.
5-6
5-2-5 VOLTMETER
The voltmeter comes in two types, a 150 V maximum type
and a 300 V maximum type. The voltmeter indicates gen-
erator output voltages. The generators with a generated volt-
age -of 110 V or 120 V use the 150 V maximum type volt-
meter; and those
6f
220 V, 230 V, and 240 V specifications
and dual voltage type generators use the 300 V maximum
type voltmeter.
300 V M A X . 150 V MAX.
(220 V. 230 V. 240 V)
I 1 1 0
v,
120 V )
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~
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Fig.
5-7
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21
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