OM 2012
power supply is turned ON and OFF by a toggle switch (21, Fig. 11) mounted on
the engine control panel.
The toggle switch is equipped with o hinged guard which
insures that the power supply is OFF when the guard is closed, covering the switch.
The guard may be safety-wired In the closed position to prevent inadvertent operation
of the switch.
Refer to Figure 16.
When the toggle switch (7) is in the UP position, 24 volts DC
is present on terminal E of the generator’s output terminal panel (14, Fig. 3) through
the following circuitry.
Refer to diagrans in Chapter 6 as required.
115 volts AC
power into‘the power supply is topped off the generator output line, on the input
side of the load contactor. The per supply is protected by the fuse (6) in the
input line. This 115 volts input is reduced by the transformer (3), rectified by the
diode bridge (2), and filtered by the capacitor (4) and resistor (5), so that an un-
regulated 24 volts DC is provided to terminal E on the output terminal panel.
In
addition, the plug interlock relay (1, Fig. 10) is energized to penit power delivery
to the aircraft.
l-l
Page 36
Aug 25, ‘85
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