Method and apparatus of voltage measurement using flying...

Details Method and apparatus of voltage measurement using flying... Method and apparatus of voltage measurement using flying...

2008-04-29

2008-04-29

Tieu, Benny Q. (Department: 4177)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Suppressed zero

C324S142000, C324S09900D

Reexamination Certificate

active

07365528

ABSTRACT:
The present invention is to provide a method and apparatus of voltage measurement with a high resolution. An apparatus of voltage measurement includes: a buffer circuit for separating a voltage between terminals of a capacitor or an equivalent voltage into a first voltage region corresponding to a full scale of an analog/digital (A/D) converter and a second voltage region corresponding to a voltage exceeding the full scale of the A/D converter when the voltage between the terminals of the capacitor charged or the equivalent voltage is higher than the full scale of the A/D converter; the A/D converters corresponding to the first and second voltage regions for converting the voltages of the respective regions from analog to digital values; and a voltage measurement device for evaluating a measured voltage value from the digital values and calculating the voltage of the voltage supply.

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patent: 6362627 (2002-03-01), Shimamoto et al.
patent: 6639409 (2003-10-01), Morimoto et al.

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