Current sense shunt resistor circuit

Details Current sense shunt resistor circuit Current sense shunt resistor circuit

2006-11-14

2006-11-14

Lam, Tuan T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S051000, C327S068000, C327S077000, C327S091000

Reexamination Certificate

active

07135891

ABSTRACT:
Current through a wire is sensed with a shunt resistor and a sense resistor in a current divider circuit. The values of the shunt resistor and sense resistor are related to provide a specified gain ratio to increase a dynamic range of current measurement. The sense resistor is a trimmable resistor, the configuration of which can be discerned from a look-up table based on a level of precision needed for current measurement. The two resistors can also be related by thermal coefficients to improve linearity of current measurements.

REFERENCES:
patent: 5231315 (1993-07-01), Thelen, Jr.
patent: 5526216 (1996-06-01), Konrad et al.
patent: 6268770 (2001-07-01), Barbetta
patent: 6316983 (2001-11-01), Kitamura
patent: 6414549 (2002-07-01), Barbetta
patent: 6469484 (2002-10-01), L'Hermite et al.
patent: 6970365 (2005-11-01), Turchi

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