Title: Transistor amplifier

Abstract: First and second transistors have their emitter electrodes connected to receive operating current from the same supply. A current amplifier has its input circuit connected to sense the base current of the second transistor and its output circuit connected to supply base current to the first transistor responsive to the sensed current. This current amplifier connection stabilizes the quiescent collector currents of the first and second transistors to predictable values. Balanced output currents responsive to an input signal coupled to the first transistor base electrode are available from the collector electrodes of the first and second transistors.

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Inventors: Leidich, Arthur John (Flemington, NJ, US)

Application Number: 541518
Filing Date: 1975-01-16
Publication_date: 1976-02-10
Assignee: RCA Corporation (New York, NY)
Primary Class(es): 330/256 330/261
Other Classes:
US Patent Ref:

3717821

Feb, 1973

Amemiya et al.

330/30.

Other Refs:
Primary Examiner: Mullins, James B.
Assistant Examiner:
Attorney: Christoffersen; H., Cohen; S., Limberg; A. L.