This report describes the noise figure of a transistor amplifier in the grounded emitter configuration. The effects of biasing, and emitter resistances are included in the noise figure. When the signal source is an inductance such as the reproduce head of a magnetic recorder, the signal-to-noise ratio (S/N) is better measurement of amplifier performance. It is shown that the S/N ratio can be maximized by a suitable choice of inductance, depending upon the operating conditions of the transistor.
Author:
Jepsen, David B.
Affiliation:
Ampex Consumer & Educational Products Division, Elk Grove Village, IL
AES Convention:
16 (October 1964)
Paper Number:
339
Publication Date:
October 1, 1964
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