Western electric 69 a schematic
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Page 1
Weary-n Electric Company
No.69-A AMPLIFIER
NO. 262A NO. 252A
VACUUM TUBE VACUUM TUBE
V' 72 v2 13
7C 6 | 4 5 l 0
R7
R4 mo
INPUT ourpur
fl RB 1-1
c3 cs
so 5 : - I 2 : J. 5 4 m
c1 c4 c5 c7
RI R3 g R5 R6 as; an
c2 J' 42
R2
0 6 o2 9
s
5 FILAMENT; $01105
m vows
Fig. 2-Schematic Diagram of No. 69A Amplifier
TERMINAL NUMBERS AND CONNECTIONS FOR NO. 69A AMPLIFIER
Terminal Numbers External Connection
1 and 2 10 volts AC (filament supply transformer)
3 and 4 Output
5 Not used
6 and 7 Input
[Negative, 350 volts DC;
8 Center tap, secondary of 10-Volt
l Transformer; and Gruund
9 Positive, 350 volts DC
755*