Switching circuit and individual voltmeter apparatus

Details Switching circuit and individual voltmeter apparatus Switching circuit and individual voltmeter apparatus

2007-03-20

2007-03-20

Nghiem, Michael (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Electrical signal parameter measurement system

C702S064000, C323S282000

Reexamination Certificate

active

11085196

ABSTRACT:
It is an object to provide an individual voltmeter apparatus utilizing a switching circuit which suppresses the variation of the consumption power of the unit cell of a set of batteries. The power supply of a first current path2m1and a second current path2m2of a level shift circuit2mis between the unit cell Vm+1 and V1, and between the unit cell Vm+1 and one lower rank cell Vm, respectively. The same current, which responds to all semiconductor switches, flows in the first current path2m1. In the second current path2m2, a larger current is provided to the second current path in which the semiconductor switch is connected to the higher rank unit cell.

REFERENCES:
patent: 2005/0088158 (2005-04-01), Horiguchi et al.
patent: H11-248755 (1999-09-01), None
patent: H11-248757 (1999-09-01), None
patent: 2002-156392 (2002-05-01), None

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