HP Lab Series - Transient Response and Preregulator Adjustments

tween supply and input power source.
c. Adjust line to 105Vac.
d. Connect decade resistance in place of .R46.
e. Turn on supply and adjust VOLTAGE con-
trol for maximum rated output voltage.
f. Adjust decade resistance so that voltage
indicated by. differential voltmeter does not change
more than l.26mVdc as input line voltage is varied
from 105 to 125Vac.
q. Replace decade resistance with appropri-
. ate value resistor in R46 position.
5-85 CONSTANT VOLTAGE TRANSIENT RESPONSE
5-86 To adjust the transient response, proceed as
follows:
a. Connect test setup shown in Figure 5-6.
b. Repeat Steps (a) through (e) as outlined in
Paragraph 5-31.
c~ Adjust R3 0 so that the transient response
is as shown in Figure 5-7.
5-87 PREREGULATOR TAACKING
5-88 To adjust the prereC]Ulator, proceed as fol-
lows:
a. Connect decade resistanceinplaceof R99.
b. Turn on supply and adjust VOLTAGE con-
trol for maximum rated output voltage (no load con-
nected). ·
c. Connect de voltmeter across series regu-
lator (TP23 to TP24).
d. Adjust decade resistance so that de volt-
. meter reads 15Vdc.
e. Replace decade resistance with appropri-
ate resistor in R99 position.
5-16
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