Amplifiers – With plural diverse-type amplifying devices
Patent
1983-03-30
1985-05-07
Mullins, James B.
Amplifiers
With plural diverse-type amplifying devices
330151, H03F 2100
Patent
active
045160805
ABSTRACT:
A high-efficiency low-distortion parallel amplifier or regulator is driven by an input signal source V.sub.i. An input signal passes to a linear circuit LC, and the output current i.sub.1 from the linear circuit passes to the input of a switching circuit SC. Alternatively, the input to the switching circuit may be any other signal that is a function of the linear-circuit output current. The output of the switching circuit passes through a coupling network CN and is applied with the output current of the linear circuit to a load impedance ZL. The output of the switching circuit acts to reduce the output current of the linear circuit so that the power it supplies is low. A low linear-circuit output current is usually sufficient to drive the switching circuit and coupling network to the maximum current required by the load. The system automatically adjusts independently of the load impedence so that with high output current most of the current is supplied by the switching circuit.
REFERENCES:
patent: 2776382 (1957-01-01), Jensen
patent: 3399358 (1968-08-01), Rinehart
patent: 4378530 (1983-03-01), Garde
Camenzind, H. R., "Modulated Pulse Audio Power Amps for ICs", IEEE Trans. Audio Electacoust., vol. AU-14, pp. 136-140, 9/66.
Dutra, J. A., "Digital Amps for Analog Power", IEEE Trans. Consumer Elec., vol. CE-24, pp. 308-316, 8/78.
Mammano, R., "Simplifying Converter Design with New Integrated Regulating PWM", SG1524 Application Note, Silicon General, Inc.
Spijkerman, J. J., and Sturgeon, C. L., "The Stugeon Amp-a New Switching Technique", Proc. Powercon 4, pp. H3-1-H3-3, 5/77.
Rensink, L., et al., "Design of KW Off-Line Switch Using Cuk Converter", Proc. Powercon 6, pp. H3-1-H3-26, 5/79.
Cuk, S., "A New 0-Ripple Switching dc-dc Converter & Integrated Magnetics", IEEE Pwr. Elec. Conf., 1980, pp. 12-32.
Mottola Steven J.
Mullins James B.
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