SECTION III. POWER SUPPLY PP-4765/GRC-1 59(V)

TM 11-5820-554-12

Section III.

POWER SUPPLY PP-4765/GRC-1 59(V)

Low voltage

265 volts , 210 ma.

7-13. Description

High voltage

750 volts,185 ma.

Power Supply PP - 4765/GRC-159(V) (Collins 516E2)

Output regulation:

converts d.c. energy from the automobile storage

Low voltage

290 volts maximum at 170 ma.

battery (negative terminal ground) to B+ and bias

High voltage

860 volts maximum at 55 ma.

voltages necessary for operation of mobile amateur

690 volts minimum at 250 ma.

equipment such as the Collins KWM-2/ 2A. The PP

Ripple present on outputs:

765/GRC-159(V) may be used in a car, boat, or plane

Filament

Less than 2.5 volts peak to

having a 28-volt power system.

peak.

7-14. Tabulated Data

Bias

Less than 0.5 volt peak to

peak.

Input requirements:

Low voltage

Less than 0.2 volt peak to

Voltage.................. 24 to 30 volts, 28 volts nominal.

peak.

Current.................. Up to 15 amp

High voltage

Less than 10 volts peak to

Outputs (nominal):

peak.

Heater voltage ....... 24 volts, 2 1/2 amp.

Efficiency

Approximately 80%.

Bias voltage........... -50 to -80 volts (adjustable).

Operating temperature

-30C. to +60C

Low voltage .......... 265 volts, 210 ma.

Humidity

0 to 90% at 50C. for

High voltage ......... 750 volts, 185 ma.

48 hours.

Output regulation:

Heater voltage

24 volts, 2 amp.

Bias voltage

-50 to -80 volts (adjustable).

EL0D0018

Figure 7-7. Interconnections to Collins KWM-2/2A.

7-7