HP 712B Operating And Servicing Manual page 5

TABLE OF SPECIFICATIONS
OUTPUT VOLT AGES
I,
DC REGULATED HIGH VOLT AGE:
DC REGULATED FIXED BIAS:
DC VARIABLE BIAS:
AC UNREGULATED:
o
to +500 volts (without switching), 200 ma maximum load.
-300 volts, 50 ma maximum load.
o
to -150 volts, 5 ma maximum load.
6.3 volts CT, 10 amps maximum load.
OUTPUT VOLTAGE REGULATION (for constant line voltage)
DC REGULATED HIGH VOLT AGE:
DC REGULATED FIXED BIAS:
DC VARIABLE BIAS:
LINE VOLTAGE REGULATION
RIPPLE
INTERNAL IMPEDANCE
DC REGULATED HIGH VOLTAGE:
RECOVERY TIME
METERING
CURRENT METER:
VOLTMETER:
TERMINALS
OVERLOAD PROTECTION
POWER SUPPLY
DIMENSIONS
WEIGHT
Less than 50 millivolts change no-load to full-load at any output
voltage.
Less than 50 millivolts change no-load to full-load.
Is tied to fixed bias, hence source regulation is same as for fixed
bias. Internal impedance 0 to 10, 000 ohms, depending on bias
control setting.
Regulated DC output voltages vary less than ±l00 millivolts for
line voltage variations 115 volts ±1O%.
Less than 500 microvolts.
(For frequencies above 20 cps.) Full-load: 0.1 ohm in series
with 25 microhenries maximum. No-load: 1 ohm in series with
50 microhenries maximum.
Upon application of full-load: 0.1 millisecond maximum. Upon
decrease from full-load to:
(a) 0 ma, 0.5 millisecond maximum.
(b) 25 ma, O. 1 millisecond maximum.
Maximum transient voltage, 1 volt.
o
to 200 ma. (high voltage only.)
Three ranges, 0 to +500 volts, 0 to +150 volts and 0 to -150 volts.
Panel switch connects meter to DC regulated high voltage or DC
variable bias and selects range.
Either positive or negative DC regulated high voltage terminal may
be grounded. Positive terminals of both bias supplies and nega-
tive terminals of DC regulated high voltage are common.
AC line, DC regulated high voltage, DC regulated fixed bias and
filament supply are separately fused. DC regulated high voltage
drops to a safe value if bias fuse blows.
115 volts ±10%, 50 to 60 cps. Approximately 120 to 450 watts
depending on load and line voltage.
Cabinet Mount: 12-1/2" high, 20-1/2" wide, l4-l/4"_deep.
Rack Mount: Panel 10-1/2" high, 19" wide, 14-1/4" deep.
Cabinet Mount: 6!1lbs. shipping weight approx. 104 lbs.
Rack Mount: 62 lbs. shipping weight approx. 98 lbs.