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#1
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![]() When a scope is put on the waveform the shape is a "modified sine wave" This is not a hard concept. "Steve Spence" wrote in message ... That's my point. There are modified square wave inverters (marketed as Modified Sine Wave), and there are "Sine Wave" inverters, which are really MSW's with such fine steps that finicky equipment can't tell the difference. There are a few folks on this group trying to justify the "Modified Sine Wave" sales moniker but there is no logic to it. Folks who should know better, but can't find it easy to "agree" with george even for a moment. It even kills me to do it, but hey, he has a point for once. -- Steve Spence Dir., Green Trust, http://www.green-trust.org Contributing Editor, http://www.off-grid.net http://www.rebelwolf.com/essn.html |
#2
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No, it's not, it's a modified square wave
SolarFlare wrote: When a scope is put on the waveform the shape is a "modified sine wave" This is not a hard concept. "Steve Spence" wrote in message ... That's my point. There are modified square wave inverters (marketed as Modified Sine Wave), and there are "Sine Wave" inverters, which are really MSW's with such fine steps that finicky equipment can't tell the difference. There are a few folks on this group trying to justify the "Modified Sine Wave" sales moniker but there is no logic to it. Folks who should know better, but can't find it easy to "agree" with george even for a moment. It even kills me to do it, but hey, he has a point for once. -- Steve Spence Dir., Green Trust, http://www.green-trust.org Contributing Editor, http://www.off-grid.net http://www.rebelwolf.com/essn.html |
#3
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SolarFlare wrote:
When a scope is put on the waveform the shape is a "modified sine wave" This is not a hard concept. Actually it's not a modified sine wave, it's still a square wave with many fine steps. Again, it's a marketing term, not a technical one. You don't "modify" the sine wave, you modify the square wave to approximate a sine wave. -- Steve Spence Dir., Green Trust, http://www.green-trust.org Contributing Editor, http://www.off-grid.net http://www.rebelwolf.com/essn.html |
#4
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On Thu, 22 Dec 2005 10:22:48 -0500, Steve Spence wrote:
SolarFlare wrote: When a scope is put on the waveform the shape is a "modified sine wave" This is not a hard concept. Actually it's not a modified sine wave, it's still a square wave with many fine steps. Again, it's a marketing term, not a technical one. You don't "modify" the sine wave, you modify the square wave to approximate a sine wave. I like that one, but "approximated sine wave" just doesn't have the same marketing ring to it. :-) Cheers! Rich |
#5
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Well, it ain't a perfect sinewave..it's a modified one.
"Rich Grise" wrote in message news ![]() On Thu, 22 Dec 2005 10:22:48 -0500, Steve Spence wrote: SolarFlare wrote: When a scope is put on the waveform the shape is a "modified sine wave" This is not a hard concept. Actually it's not a modified sine wave, it's still a square wave with many fine steps. Again, it's a marketing term, not a technical one. You don't "modify" the sine wave, you modify the square wave to approximate a sine wave. I like that one, but "approximated sine wave" just doesn't have the same marketing ring to it. :-) Cheers! Rich |
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