Active autoranging current sensing circuit

Details Active autoranging current sensing circuit Active autoranging current sensing circuit

2011-04-12

2011-04-12

Hollington, Jermele M (Department: 2858)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Plural ranges, scales or registration rates

Reexamination Certificate

active

07923985

ABSTRACT:
A range-changing circuit for a measurement device having a desirable range includes an array of graduated impedances. And amplifier supplies an electrical voltage to at least one of the impedances of the array. A voltage sensing and limiting switch is provided in a feedback path of the amplifier. The switch limits said electrical voltage supplied to said at least one of the impedances in response to a sensed voltage that is sensed by the switch. An electrical voltage in the desirable range is developed across a different one of the impedances of the array based on an operation of the switch.

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patent: 7276893 (2007-10-01), Banaska et al.
patent: 2006/0192547 (2006-08-01), Banaska et al.
patent: 2006/0192571 (2006-08-01), Banaska et al.

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