HP AC-4A - AC-4 A Remote Readout with DC Bucking Voltage

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•
1.
•
2.
3.
4.
5.
6.
•
50
4AMP
METER
+
Rl7
500K
+
♦
+135
APPROX
.
.---++300V
(PIN 4
OF
AC
-
4A)
47K
4
3
AC-4A
Rl6
20K
2
47K
0
PIN 6 PIN 8
680K
-
Fig.
7.
Remote
Readout
of
AC-4A
Decade
Counter
Unit
Usin
g a
Circuit
that
Supplies
a
DC
"Bucking"
Voltage
to
Permit
Use
of
a
Standard
Meter
Reset
AC-4A
to
ZERO.
Adjust
Rl6
for
O
reading
on
meter
.
Stop
AC-4A
on
9.
Adjust
Rl
7
for
full
scale
reading
on
meter.
Reset
AC-4A
to
ZERO.
Step
AC-4A
one
di
g
it
at
a
time
and
mark
meter
scale
.
-9-