METHOD AND APPARATUS FOR MEASUREMENT OF A DC VOLTAGE
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United States of America Patent
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Issued Date -
Oct 9, 2014
app pub date -
Aug 17, 2012
filing date -
Aug 18, 2011
priority date (Note) -
Abandoned
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Abstract
Apparatus for measurement of a DC voltage of a DC voltage source. An electrode forms a capacitive connection with the DC voltage source. A non-linear capacitor has a first node connected to the electrode. An initial voltage source is arranged to generate an initial voltage. A switch is arranged to selectively apply the initial voltage to a second node of the non-linear capacitor. A voltage sensor is arranged to measure the voltage of the second node of the non-linear capacitor and a processor is programmed to deduce the DC voltage of the DC voltage source by analysing the rate of decay of the measured voltage.
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