Single string resistive divider network for a digital multimeter
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United States of America Patent
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Dec 13, 1994
Grant Date -
N/A
app pub date -
Mar 27, 1992
filing date -
Mar 27, 1992
priority date (Note) -
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Abstract
A relatively large protection resistor is connected between the measurement in-out terminal and the internal circuitry of a digital multimeter. A clamping circuit at the input to the internal circuitry insures that any voltage applied to the input terminal will be dropped across the protection resistor, thereby avoiding an over-voltage condition which could damage the internal circuitry. A resistive divider network used to make measurements is connected between the protection resistor and the clamping circuit and is designed to take the protection resistor into account during measurements.
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