HP 6296A - Page 42

Table 5-7. Selected Semiconductor Characteristics (Continued)
CR100-CR102,
•
CR200, CR300, CR301. Si diode, 200 mA. 200 prv
1901-0033
1N48SB Sylvania
CRSOO, CR700, CR701
CR402. CR602,
Si Stabistor.
200 mA. 15 prv
1901-0461
1N4828
G. E.
CR803-CR806
VR300
Zener diode, 4. 22V, :!:5%
1902-3070
400 mw
1N749 Motorola
Table 5-B.
Checks and Adjustments After Replacement of Semiconductor Devices
Reference
Function
Check
Adjust
0100
Constant voltage differential amplifier
Constant voltage (CV)
line and load ~egu lation.
0200
Constant current differential amplifier
Constant ct:trrent (CC)
line and load regulation.
0300
Constant Current gating amplifier CC load regulation.
Q301
Constant Voltage gating amplifier CV load regulation.
0302. 0303
Error amplifiers
CV/CC load regulation
Transient response R307
•
0400 (0401)
Series Regulator
CV/CC load regulation
0600, Q601.
Reference
regulator
Reference ~oltages.
0602, Q603
Overvoltage trip point.
R604
0700, Q701
Voltage across
R711
0702
SCR control
series regulator
0851, 0852.
Meter zero. Voltmeter/
R870,RB65,
QBS3
Meter amplifiers
Ammeter tracking
RBSS
Short output, ensure
QBOl, QB02
Overcurrent detectors
that output goes to
zero without damage
to series regulator.
CRlOO, CRlOl Limiting
diodes
CV load regulation
CR403, CR404 Forward bias regulator
Voltage across each
diode O. 6 to O. 9 volts.
CR700-CR703
Rectifier bridge
Waveform between 52
and 90
CR704-CR707
Rectifier bridge
Waveform b~tween 54
and 90
•
5-11