Power supply apparatus and electronic appliance equipped with th

Details Power supply apparatus and electronic appliance equipped with th Power supply apparatus and electronic appliance equipped with th

1995-06-05

1998-02-10

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

307 43, 307 64, 320 2, 320 13, 320 48, 324426, 324427, 324433, 324435, H02J 704

Patent

active

057172560

ABSTRACT:
A power supply apparatus includes a battery, a voltage converter for converting the output of the battery to a different D.C. voltage by ON/OFF action of a main voltage converter control switch circuit, and a device for estimating a remaining capacity of the battery. The remaining battery capacity estimation device detects a non-load voltage of the battery when the main voltage converter control switch circuit is OFF, and estimates the remaining capacity of the battery.

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patent: 3784892 (1974-01-01), Zelina
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patent: 4961043 (1990-10-01), Koenck
patent: 5119011 (1992-06-01), Lambert
patent: 5148053 (1992-09-01), Hirata et la.
patent: 5177371 (1993-01-01), Faulk
patent: 5311441 (1994-05-01), Tayama et al.
patent: 5321627 (1994-06-01), Reher
patent: 5455499 (1995-10-01), Uskali et al.
patent: 5477129 (1995-12-01), Myslinski

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