Power supply for an AF sound output stage

Details Power supply for an AF sound output stage Power supply for an AF sound output stage

1995-05-17

1996-01-16

Wong, Peter S.

Electric power conversion systems

Current conversion

With voltage multiplication means

363 61, 330297, H02M 719

Patent

active

054853648

ABSTRACT:
A power supply for an AF sound stage includes a transformer and a charging capacitor for storing an operating voltage. A rectifier connects the secondary winding of the transformer to the charging capacitor. A voltage doubler circuit, which includes a series connection of a second capacitor and a first switching means, is in parallel with the secondary winding. A second switching means connects the junction of the second capacitor and the first switching means to the charging capacitor.

REFERENCES:
patent: 3828239 (1974-08-01), Nagai et al.
patent: 4387333 (1983-06-01), St. Ledger
patent: 4398120 (1983-08-01), Guillon
patent: 4797633 (1989-01-01), Humphrey
patent: 5142171 (1992-08-01), Nunogawa et al.
Patent Abstract of Japan, E-907 Mar. 23, 1990 vol. 14 No. 154 App. No. 63-161568.
Data sheets for 20W Hi-Fi Audio Power Amplifier TDA 2040 pp. 373-379, SGS Jun. 1982.
High Fidelity Technique, John A. Newitt, Rinehart & Co. Inc. pp. 12-20, 250 and 251 May 1959.

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