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The simplicity of zero-crossing measurements is attractive. Regarding "Full period" zero crossing (i.e. time between rising-zero-crossings, or between falling-zero-crossings), compared to "half pe...
Answer
#3: Post edited
by
Pete W
·
2024-05-15T15:02:07Z (7 months ago)
- The simplicity of zero-crossing measurements is attractive.
- Regarding "Full period" zero crossing (i.e. time between rising-zero-crossings, or between falling-zero-crossings), compared to "half period" zero crossing measurement:
Full-period has the benefit of being less sensitive to DC offset. I.e. if there were a DC offset, or a low frequency were superimposed, then every other half-period would appear a little shorter/longer than the one just before it. Of course any potential issues arising from that could be ironed out digitally too.
- The simplicity of zero-crossing measurements is attractive.
- Regarding "Full period" zero crossing (i.e. time between rising-zero-crossings, or between falling-zero-crossings), compared to "half period" zero crossing measurement:
- Full-period has the benefit of being less sensitive to DC offset. I.e. if there were a DC offset, or a low frequency were superimposed, then every other half-period would appear a little shorter/longer than the one just before it. Of course any potential issues arising from that could be ironed out digitally too, in the code.
#2: Post edited
by
Pete W
·
2024-05-15T15:01:46Z (7 months ago)
- The simplicity of zero-crossing measurements is attractive.
- Regarding "Full period" zero crossing (i.e. time between rising-zero-crossings, or between falling-zero-crossings), compared to "half period" zero crossing measurement:
Full-period has the benefit of being less sensitive to DC offset. I.e. if there were a DC offset, or a low frequency were superimposed, then every other half-period would be a little shorter than the one just before it. Of course any potential issues arising from that could be ironed out digitally too.
- The simplicity of zero-crossing measurements is attractive.
- Regarding "Full period" zero crossing (i.e. time between rising-zero-crossings, or between falling-zero-crossings), compared to "half period" zero crossing measurement:
- Full-period has the benefit of being less sensitive to DC offset. I.e. if there were a DC offset, or a low frequency were superimposed, then every other half-period would appear a little shorter/longer than the one just before it. Of course any potential issues arising from that could be ironed out digitally too.
#1: Initial revision
by
Pete W
·
2024-05-15T15:00:39Z (7 months ago)
The simplicity of zero-crossing measurements is attractive. Regarding "Full period" zero crossing (i.e. time between rising-zero-crossings, or between falling-zero-crossings), compared to "half period" zero crossing measurement: Full-period has the benefit of being less sensitive to DC offset. I.e. if there were a DC offset, or a low frequency were superimposed, then every other half-period would be a little shorter than the one just before it. Of course any potential issues arising from that could be ironed out digitally too.