PSC 101 - Regulation and Ripple Check

SERIES OPERATION
#1
#2 #1
PARALLEL OPERATION
#2
REAR PATCH CONNECTIONS
$ #2
16(+ Sense) 15 to 16
17 to 18 17 to 18
40 to 50 40 to 50
42 to 52 42 to 52
44 to 54 44 to 54
49(-Sense) 48 to 49
Diodes are IN1191R or equivalent
SERIES AND PARALLEL OPERATION OF - MOD POWER SUPPLIES
SECTION 5
REGULATION AND RIPPLE CHECK
Connect the power supply AC input to metered
variac or variable auto-transformer.
Connect load resistor to the output terminals of the
power supply through a switch and DC ammeter.
The load resistor should be such that the rated load
current is obtained with rated output voltage.
Connect a differential voltmeter or digital voltmeter
DIRECTLY to the power supply output terminals.
The
differential
voltmeter
must
not
be
connected
to
6.
the load or to the wires going to the load.
Connect
an
AC
vacuum
tube
voltmeter
with
shield-
ed
leads
to
the
output
terminals
of
the
power
supply.
x
7.
LOAD REGULATION:
а. Adjust the variac for 115 volts as indicated by
the variac.
b. Close load switch and adjust load resistor for
rated output current as indicated by the DC
ammeter, with the power supply output set at
rated voltage.
с.
The
load
regulation
can
be
measured
by
alter-
nately
opening
and
closing
the
switch
and
ob-
serving
the
voltage
change
on
the
differential
voltmeter.
LINE REGULATION:
With
rated
output
current
SWI
closed,
vary
the
lin
voltage
as
indicated
by
the
variac
from
105
to
130
volts
AC.
The
line
regulation
can
be
observed
on
the differential voltmeter.
RIPPLE:
With
the
AC
input
voltage
set
at
115
volts,
rated
output
current
and
voltage,
the
ripple
may
Бе
ob-
served
on
the
AC
vacuum
voltmeter
or
other
low
bandwidth
HI
input
impedance
voltmeter.