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VOLTAGE AND
RESISTANCE
CHART
TUBE
PIN#
DC VOLTS
DC VOLTS
AC
VOLTS
(1
kc)
NO
SIGNAL
SOW OUT
SOW OUT
RESISTANCE
UNIT OFF
ECC83/12AX7
1
77
77
.6S
315
KO
2
-0.3
-0.3
.032
2.2MQ
VI
3
0.6
0.6
.017
2.2
KQ
4&5
filament
(-47VDC;
6.3VAC
to
pin 9)
40
KQ
6
66
64
.032
315
KQ
7
0
0
.009S
47
KQ
8
0.7
0.7
.0088
1.6KQ
EC90/6C4
9
1/5
filament
190
180
0
40
KQ
50
KQ
V2
2
3&4
filament
(-47VDC}
6.3VAC
between)
38
KQ
6
54
50
0.65
1.05MQ
7
98
92
0.61
50
KQ
ECC83/12AX7
1
98
92
4.4
365
KQ
2
00
.54
500
KQ
V3
3
0.75
0.7
.48
1.1
KQ
4&5
filament
(-47VDC;
6.3VAC
to
pin 9)
38
KQ
6
144
135
.54
150
KQ
7
0
0
.026
650
KQ
8
1.5
1.35
0
3.3
KQ
9
filament
40
KQ
6CG7
1
230
200
32
45
KQ
2
90
82
.0044
1.37MQ
V4
3&8
102
96
2.2
18
KQ
4&5
filament
(-47VDC;
6.3VAC
to
pin 9)
38
KQ
6
230
200
32.
45
KQ
7
98
90
4.4
365
KQ
9
fl
lament
-
-
40
KQ
EL34/6CA7
1
0,65
1.2
1.4
lOQ
2&7
filament
(-47VDC;
6.
3
VAC
between)
38
KQ
V5
3
470
435
240
44
Q
4
470
435
1
00
20Q
5
-37.5
-38.5
32
220
KQ
6
-38
-38
32
220
KQ
8
0.65
1.2
1.4
lOQ
EL34/6CA7
1
0.65
1.2
1.4
lOQ
2&7
filament
("47VDC;
6.
3
VAC
between)
38
KQ
V6
3
470
435
240
50
Q
4
470
435
1
00
18.
5Q
5
-37.5
-38.5
32
220
KQ
6
-38
-38
32
220
KQ
8
0.65
1.2
1.4
lOQ
GZ34
1
-
_
-
2
fil.470
(5.0VAC
to
pin
8;
remove
tube
to
measure)
above 200
KQ
V7
3
470
440
4
-
393
50
Q
5
-
-
-
6
-
393
50
Q
7
-
-
-
8
ffi.&cath.470
440
above 200
KQ
Al! resistance
measurements except
those from
pins
2
and 8
of the
GZ34
are
made
with
pin
8
of the
GZ34
grounded.
All
voltages
and
resistances are
measured
to chassis
with
the
LEVEL
& LOUDNESS
controls
set to
10 on
their dials
and
the
TREBLE
&
BASS
controls set
to 0.
For
voltage
measurements
at
SOW
output,
set
the Input selector
to
the R
I
AA
position
and
feed a
,
0095
volt (9.5
mv).
1
kc
signal
to
the
PHONO
LO
input |ackf
connect a
resistive
(preferably
non-inductive)
load of equal resistance
to
the tap selected
(±20%)
and capable
of
handling 100
watts.
Voltage measurements
are
made
with
a
VTVM.
Operating
line
voltage
at
which
voltage measurements
are
made
is
117V
AC,
60cps.
NOTE: ALL
VOLTAGE &
RESISTANCE
VALUES
MAY
VARY NORMALLY
BY
± 15%.
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