Figure 1-1. Power supply PP-3940/G and running spares.
1-4. Specifications
a. General Characteristics. Power Supply PP-3940/G is transistorized with a continuous-
ly variable, wide range output.
Range 105 to 125 vac.
Input power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50-400 cy.
Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . .
60 cycles
Nominal . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 amp.
Current . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0-36 vdc.
Output voltage . . . . . . . . . . . . . . . . . . . . . . . . . .
0-4 amp.
Dc current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
% Regulation
(.02% + 1 mv).
Line ampersand & load combined . . . . . .
0.5 mv rms.
Ripple 60 cy . . . . . . . . . . . . . . . . . . . . . . . .
50 microsec.
Response time . . . . . . . . . . . . . . . . . . . . . . . .
0C (32F) to 40C (104F)2.
Ambient temperature . . . . . . . . . . . . . . . .
Width 17 in., depth 14 in., height 5 in.
Cabinet size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-1/4 in.
Rach height . . . . . . . . . . . . . . . . . . . . . . . . . .
45 lb.
Weight (net) . . . . . . . . . . . . . . . . . . . . . . . .
Binding post (front) and terminal board
Output terminals . . . . . . . . . . . . . . . . . . . . . . . .
(rear).
Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
racy).
Input and output fuse.
Protective devices . . . . . . . . . . . . . . . . . . . . . . . .
Regulation accuracy guaranteed at the output terminals only, not at load input connections. (Refer to
1
method of sensing (para 2-9 and 2-10).)
2
Regulation not guaranteed with ambient changes (15 C to 35 C output change for fixed line and load
0.03% C typical).
1-2
