Section IX. RECOVERY DRIVE AND POWER TRANSFORMERS

TM 11-6130-385-34

Figure

Power

switch.

Section

IX.

RECOVERY

DRIVE

AND

POWER

TRANSFORMERS

3-38. Recovery Drive Circuit

C617, C618, and C619 are selected tuning com-

ponents and are not used unless required. Capacitors

C601 through C610 act as a storage cell for the dc

The recovery drive transformers are located on

input to the unit and provide an additional source of

Module A9. Input from the recovery drive circuit on

c u r r e n t to supply the circuits when instantaneous

the oscillator board (A1) is applied and transferred

d e m a n d s exceed the 28-vdc source.

as 2V signals to the recovery drive circuit on module

A7 chassis.

3-40. Output Filter

(fig. 3-30)

3-39. Power Transformer Circuit

(fig. 3-29)

The output filter is an encapsulated unit and is

i l l u s t r a t e d for circuit continuity purposes only. Do

T h e power transformer (T1) and capacitors (C611

n o t make any repairs to this unit.

through C619) provide a step-up of 30 vac to 115 vac

at 400 Hz, 3 phase, to the output filter. Capacitors