Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent
1979-03-23
1981-09-01
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including differential amplifier
H03F 345, H03G 332
Patent
active
042874769
ABSTRACT:
In a control circuit having an emitter-coupled pair of transistors, to the base whereof a control voltage is supplied and whose emitter circuit is controlled by a signal source, the control voltage is also supplied to the emitter circuit to obtain a lower direct current through the transistor pair for a larger gain so that unwanted variations in the output d.c. voltage level are reduced.
REFERENCES:
patent: 3750042 (1973-07-01), Deil et al.
patent: 3921091 (1975-11-01), Van Kessel et al.
Franzblau Bernard
Mullins James B.
Streeter William J.
U.S. Philips Corporation
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