The Cathamplifier

This paper discusses an amplifier circuit with high input impedance which permits push-pull operation from an unbalanced source. A voltage, proportional to the total circulating current of the push-pull system, is obtained from a transformer connected in the cathode circuits of the output valves. Ov...

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Bibliographic Details
Published in:Proceedings of the IRE 1952-04, Vol.40 (4), p.460-465
Main Author: Parry, C. A.
Format: Article
Language:English
Subjects:
Australia
Cathodes
Circuits
Impedance
Inductors
Operational amplifiers
Oscillators
Transconductance
Valves
Voltage
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Description
Summary:This paper discusses an amplifier circuit with high input impedance which permits push-pull operation from an unbalanced source. A voltage, proportional to the total circulating current of the push-pull system, is obtained from a transformer connected in the cathode circuits of the output valves. Over-all performance similar to usual push-pull operation may be obtained. The possibility of a single- or two-mode oscillator is also discussed. Because of the simplicity, and general application of this circuit, some of the more useful formulas are developed in detail.
ISSN:0096-8390
2162-6634
DOI:10.1109/JRPROC.1952.274042