Power supply circuit

Details Power supply circuit Power supply circuit

1986-12-03

1988-05-31

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

307 64, 307 87, 363126, 363127, H02J 906

Patent

active

047483423

ABSTRACT:
A power supply circuit in which the mains voltage which is applied across the primary winding (2) of a transformer (1) to generate a first direct voltage across a first capacitor (C.sub.1) by means of a secondary winding (3) and a first rectifier (D.sub.1) and a second direct voltage is generated across a second capacitor (C.sub.2) by means of a tertiary winding (4) and a second rectifier (D.sub.2). If the mains voltage is not connected, a first direct voltage is supplied by a battery (15) connected in parallel with the first capacitor (C.sub.1). The second direct voltage then is generated from the battery voltage of the battery (15) by means of an inverter circuit (20), a transistor (T.sub.1), the secondary winding (3) and the the tertiary winding (4).

REFERENCES:
patent: 3769571 (1973-10-01), Wilkson
patent: 4010381 (1977-03-01), Fichenscher et al.
patent: 4038559 (1977-07-01), Chun et al.
patent: 4238691 (1980-12-01), Ebert
patent: 4241261 (1980-12-01), Ebert
patent: 4313060 (1982-01-01), Fickenscher et al.
patent: 4475047 (1984-10-01), Ebert
patent: 4510401 (1985-04-01), Legoult
patent: 4556802 (1985-12-01), Harada et al.
patent: 4564767 (1986-01-01), Charych
patent: 4673825 (1987-06-01), Raddi et al.

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