Method of measuring frequency of AC power
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United States of America Patent
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May 6, 2003
Grant Date -
Jan 23, 2003
app pub date -
Jul 6, 2001
filing date -
Jul 6, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of measuring frequency samples a waveform, calculates waveform voltages based on an initial time base and adjust the time base for a particular waveform to determine the actual frequency of the measured AC power. A microprocessor can be used to implement the method so a small quantity of electronic elements is required, and the manufacturing cost is low.
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