Comments on Standardized way of measuring AC line frequency
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Standardized way of measuring AC line frequency
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In a general sinewave as below, is there a "right" way/"standardized" way to measure line frequency - and how do energy meters calculate that?
- measuring pulse width of half-period, ie. time elapsed and then doing f=2/T
- measuring pulse width of full-period, then f=1/T
Is there a need to average and filter assuming the reading is being taken with a microcontroller?
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If you're talking oscilloscopes, I used to do peak-to-peak measurements for the time period. And then, as you note, invert for the frequency.
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