Title: Hybrid feedback amplifier of a push-pull type

Abstract: A feedback amplifier including a first and a second amplifier section comprises an autotransformer winding connected between common terminals of the respective amplifier sections and across a feedback circuit. A terminating impedance is connected between the output terminal of one of the amplifier sections and the autotransformer winding at a point nearer to its point of connection to the other amplifier section common terminal. Another terminating impedance is connected between the other amplifier section output terminal and the autotransformer winding at another point nearer to its point of connection to the common terminal of the above-mentioned one amplifier section. The terminating impedances may be used on the input side. They may be connected to the autotransformer winding at its points of connection to the respective common terminals, when the autotransformer may be dispensed with.

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Inventors: Akiyama, Susumu (Tokyo, JA)

Application Number: 598470
Filing Date: 1975-07-23
Publication_date: 1977-01-18
Assignee: Nippon Electric Company, Ltd. (Tokyo, JA)
Primary Class(es): 330/271 330/82, 330/84
Other Classes:
US Patent Ref:

2763732	Sep, 1956	Rockwell	330/81.
3566236	Feb, 1971	Johnson	330/118.

Other Refs: 1,285,012

Dec, 1968	DT

Primary Examiner: Mullins, James B.
Assistant Examiner:
Attorney: Sughrue, Rothwell, Mion, Zinn & Macpeak