Western electric 57 a schematic
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Extracted text from western electric 57 a schematic (Ocr-read)
Page 1
3,
A C LINE
Westm Electric Company
No.57-A AMPLIFIER
POSITION Z-FIL. I AND ZAND PLATE
SAND ARE CLOSED
POSITION 3-OFF I AND 2-AND 3 AND
ARE OPEN
NUMBEPING ON TERMINALS DOES
NOT APPEAR ON SWITCH
F
r-Fqfl» 2 AMP FUSE :: SLATE WIRE
P 1 ,4 J 2/
2 AMP FUSE
1 _ 1LT
AMPLIFIER
Z-NO 252A
VACUUM TUBES
mmsrowen A
,C V gag) TR Nsrowzn 04
gm I fifi
. ..
NPUT 1 OUTPUT
RED
WIRE~ g
20 r g D 03
RETARDATION
coms 6ND
PLATE CURRENT / ,
MILLIAMMETER /
.. IL
H l'
/ cm GND
FLLAMENTPLATE swwcn + H
Posmou I-FIL I AND 2 ARE CLOSED PLATE C if RECTIFIEH
2-NO.253A
rVACUUM
TUBES
ll'
' TRAQSFOR'MER
1'2
ICFRONT COVEP SWITCH
T3
_41,