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Convention Paper

Transistor AC Amplifiers with High Input Impedance: A Survey

Authors: Ekiss, John A.

AES Convention 11 · Paper 92 · October 1959

Abstract

The inherently low input impedance of the transistor makes it necessary for special techniques to be used to raise this low impedance to values in the range of 1 to 30 megohms. This paper reviews a few of the techniques that allow high input impedance amplifiers to be realized. The main design criteria for these amplifiers are (1) high input impedance, (2) thermal stability, and (3) low noise figure. The various circuits that are presented will be discussed with respect to criteria (1) and (2) above. General comments will be made on the factors influencing noise figure.

Details

Published in
AES Convention 11
AES Convention
11
Paper number
92
Publication date
October 6, 1959
Affiliation
Lansdale Tube Co., Lansdale, PA (See document for exact affiliation information.)
Type
Convention Paper