Post History
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
by
2kind
·
2024-05-03T19:14:42Z (8 months ago)
- 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?- 
- 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?
- 
#1: Initial revision
by
2kind
·
2024-05-03T12:18:24Z (8 months ago)
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? 