Section IV
Paragraph 4-46
at the base of Ql will increase the effective resistance
of series regulator.
4-46. The rectifier output is continually changing, as
it is a pulsating current.
Thus the amplifier chain
feeding the series regulator is continually compen-
sating for this pulsation, effectively smoothing the
rectifiers output. Capacitor C2 (mounted on chassis)
sets ac output impedance. Zenor diode CR5 provides
constant basevoltage toQ2. Diode CR6 protects tran-
sistor Q3 against transients. Diodes CR7, CR8, and
CR9 provide current limiting in the event of a grounded
output. As stated earlier the operation for the nega-
tive supply is identical to the positive supply, except
that only one differential amplifier is used in the
circuit.
Model 4342A
4-4
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