Amplifiers – Modulator-demodulator-type amplifier
Patent
1982-01-28
1984-12-11
Mullins, James B.
Amplifiers
Modulator-demodulator-type amplifier
330124R, H03F 338
Patent
active
044881215
ABSTRACT:
A method of amplifying an analog low-frequency signal, and a switching amplifier implementing the method, wherein the maximum amplifiable voltage of the analog input signal is divided up into as many voltage bands as there are switching stages provided in the switching amplifier, and one switching stage is associated with each voltage band. Thereby the number of switching stages actuated and their switched-on period may be modulated in dependence upon the amplitude. In this way it is possible to reduce considerably the total number of switching processes during one period of the low-frequency input signal and the losses connected with each switching process.
REFERENCES:
patent: 4068228 (1978-01-01), Vallas
patent: 4399558 (1983-08-01), Smollin
patent: 4403197 (1983-09-01), Swanson
Furrer Andreas
Mertl Vaclau
Milavec Johann
Stemmler Herbert
BBC Brown Boveri & Company Limited
Mullins James B.
Wan G.
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