Dual battery recharger with backup power feature for use in syst

Details Dual battery recharger with backup power feature for use in syst Dual battery recharger with backup power feature for use in syst

1994-06-01

1996-11-26

Wysocki, Jonathan

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

307150, 455 89, 455127, H02J 700

Patent

active

055788750

ABSTRACT:
An alternative power supply apparatus for use in association with systems having a base unit connected to an external power supply and an associated battery-powered portable unit. The alternative power supply apparatus includes two rechargeable batteries one of which serves to provide electrical power to the portable unit. There are two ports associated with the base unit, each port operably and detachably accepts one of the two rechargeable batteries. The apparatus further includes a voltage regulator which provides regulated voltage to circuitry in the base unit. Two current sources each associated with a respective one of the two ports provides an electrical current to the batteries when they are operably accepted by the ports. The second rechargeable battery, which is interchangeable with the first rechargeable battery, provides a source voltage to the voltage regulator upon failure of the external power supply.

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