Amplifiers – With semiconductor amplifying device – Including push-pull amplifier
Patent
1983-04-19
1985-07-23
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including push-pull amplifier
330295, 330297, H03F 330
Patent
active
045310998
ABSTRACT:
An amplifier includes a differential amplifier which is supplied with a small amplitude signal in a normal condition and a large amplitude signal in an abnormal condition. Resistors and diodes jointly act to judge whether the differential amplifier issues a small or large amplitude signal. A small amplitude signal is amplified by a small amplitude signal-amplifying section and a large amplitude signal is amplified by a large amplitude signal-amplifying section. The large amplitude signal-amplifying section is supplied with a first source voltage B.sub.2. The small amplitude signal-amplifying section is impressed with a second source voltage B.sub.1. An output signal of the amplifier is supplied to a load A through an output terminal common to the small amplitude signal-amplifying section and large amplitude signal-amplifying section. The first and second source voltages B.sub.2, B.sub.1 are chosen to have the following relationship:
REFERENCES:
patent: 3577092 (1968-07-01), Kubicz
patent: 4117418 (1978-09-01), Hoglund
patent: 4158179 (1979-06-01), Sakai et al.
patent: 4236120 (1980-11-01), White
patent: 4401954 (1983-08-01), Suzuki
P. R. Gray & R. G. Meyer, "Analysis and Design of Analog Integrated Circuits", 1977 John Wiley & Sons, N.Y., p. 160.
Jacob Millmen, "Microelectronics Digital & Analog Circuits & Systems", 1979, McGraw-Hill, N.Y., p. 669.
Herbert Taub & D. Schilling, "Digital Integrated Electronics", 1977, McGraw-Hill, N.Y., p. 517.
Mullins James B.
Tokyo Shibaura Denki Kabushiki Kaisha
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