Selective connection of power supplies

Details Selective connection of power supplies Selective connection of power supplies

1987-10-01

1989-03-14

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

307 43, 307 85, 307 87, 323271, H02J 906

Patent

active

048126721

ABSTRACT:
A circuit for selectively connecting or disconnecting one of two power supplies, connected in parallel, in the event of the failure of one of the power supplies. The mechanism used is a MOSFET inserted "backwards" in a control circuit such that when the MOSFET is turned "off" no current drain is permitted through the diode internal to the MOSFET. Such a method provides fast switching and may be employed in other circuits as a replacement for relays.

REFERENCES:
patent: 4492876 (1985-01-01), Colbert et al.
patent: 4617473 (1986-10-01), Bingham
patent: 4698578 (1987-10-01), Mullersman et al.

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