Amplifiers – With semiconductor amplifying device – Including particular power supply circuitry
Patent
1983-08-19
1984-11-20
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including particular power supply circuitry
330268, H03F 330
Patent
active
044841515
ABSTRACT:
An amplifier circuit for supplying output voltages which are much higher than the breakdown voltage of the individual components forming the amplifier comprises a control circuit (1) and an amplifier stage (2). The amplifier stage (2) comprises 2n transistors (7-12) where n is an integer greater than one, having their main current paths serially connected between two supply terminals (3, 4). The bases of the transistors (7-12) are connected to tapping points on a series chain of diodes (34-41) in the control circuit (1). Further supply sources (13-16) apply an incrementally decreasing sequence of voltages to transistors (8, 9) and (10, 11) so that the voltage across any of the transistors (7-12) is limited to one increment of the sequence of voltages.
REFERENCES:
patent: 3622899 (1971-11-01), Eisenberg
patent: 4100501 (1978-07-01), Nakagaki et al.
Nijman Aloysius J.
Schoofs Franciscus A. C. M.
Van Mil Job F. P.
Briody Thomas A.
Mullins James B.
Streeter William J.
U.S. Philips Corporation
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