Power supply for energizing DC load from AC or DC source

Details Power supply for energizing DC load from AC or DC source Power supply for energizing DC load from AC or DC source

1993-08-19

1997-01-07

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Selective or optional sources

307128, 307150, H02B 124

Patent

active

055920306

ABSTRACT:
A power supply for energizing a load device such as an electrical motor of a small suction/compressor pump with DC, includes an AC socket for connection to an AC supply, a rectifier, a charging circuit for charging a storage battery, a manual switch for connecting the load device either to the rectified AC from the AC source or to the battery, and a control circuit for connecting the battery to the load device when the manual switch is closed and the AC is not connected to an AC source, and for disconnecting the battery from the load device and connecting it to the charging circuit when the AC socket is connected to an AC source and the manual switch is open.

REFERENCES:
patent: 4672228 (1987-06-01), Swoboda
patent: 4835409 (1989-05-01), Bhagwat et al.
patent: 4939623 (1990-07-01), Equi et al.
patent: 4957831 (1990-09-01), Meredith et al.
patent: 5184025 (1993-02-01), McCurry et al.
patent: 5220269 (1993-06-01), Chen et al.
patent: 5245220 (1993-09-01), Lee
patent: 5250767 (1993-10-01), Sammon

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