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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 elap...
#2: Post edited
- 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?- ![sinewave period](https://electrical.codidact.com/uploads/dhj3n3xy3wkvlfmkw5nl36aj5sna)
- 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?
- ![sinewave period](https://electrical.codidact.com/uploads/dhj3n3xy3wkvlfmkw5nl36aj5sna)
#1: Initial revision
Standardized way of measuring AC line frequency
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? ![sinewave period](https://electrical.codidact.com/uploads/dhj3n3xy3wkvlfmkw5nl36aj5sna)