Figure 4-25.--A. Power supply. B. Mk 19 voltage regulator.
components connected to the ship's 400-Hz power
the control cabinet also includes an isolation
mains, thus eliminating line-to-ground ptentials in the
transformer, a ventilating fan, and a spare am-
gyro circuits from the ship's 400-Hz system.
The ventilating fan is located above the isolation
The isolation transformer is located immediately
transformer and provides ventilation for the interior of
below the top of the rear portion of the control cabinet
and isolates the compass system from the rest of the