H6Bm"
sr
Returnthe STBY-ON
Switch5 to the ON position
and
setthe
output
voltage
as
follows:
a. Set METER
RANGESwitch
to C-l0-
100Vwhen
adjusting
C-supply
output.
b. TurnC-
control 15 untildesired
voltage
is
reached.
Flg. 2. Typical VacuumTube Circuit Application.
lncrease
the strutdownpoint slightly with the
B+ CURRENT SET control 2 .lt the normal
load currentisunknown, thistechnique
maybe
used,but, if the current limit is already
set
for
the maximumsafe
loadcurrent,do not increase
thecurrentlimit further.
Check the bias setting to determine if it is
incorrectlyset.
(5) Refer
to NOTEunder
4d, Page
5.
NOTE
Some equipment has a highly capacitiveinput,
which resultsin a surgecurrent when power is
initially applied.Whenpoweringsuch
equipment,
the overl,oadcircuit may activiate when the
STBY-ONswitch
isplaced
in theON positionwith
full operatingvoltagepreviously
set.If this occurs,
reduce the voltage setting before resetting the
overload and then bring the output level up
gadually to allow thecapacitors
in theequipment
to charge;
thiseliminates
thesurgecurrent.
c. If the power supply continues
to shut dodn at the
correct current setting, check the load circuits to
determine
thereason
for the overload.
d. To remove
power from the load without disturbing
the voltage or current shutdown settings,set the
STBY-ON
switch 5 to theSTBYposition.
e. Refer
to NOTEunder
4-d,
page
5.
GTN
H
(3)
6.
c. Set the METER RANGE switch 11
whenadjustingB+ supply
output .
d. Turn LEVEL control 12 clockwise
reached. until voltage is
NOTE
Whena fixed biasis requiredfor a circuit under
test, always
perform Steps
a and b first. (C- bias
level.)
7. If the B+ load current exceeds
the current shutdown
point, the overload lamp 4 will light, and the B+
supply will shut down (cunent meter 1 and volt-
meter10 will drop to zero).Restore
thepowersupply
to normaloperation
as
follows:
a. To reset the power supply, pressand releasethe
set/reset
button 3 . If the overloadwas intermit-
tent, thiswill restore
normaloperation.
b. If the overloadlamp remainslit, use one of the
following techniques before resetting the power
supplyagain.
(l) Reduce
theloadcurrent.
(2) Reduce the voltage slightly with the LEVEL
control 12 .
to B+/G400V (4)
