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Wind/Solar Electrics ???



 
 
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  #1  
Old December 22nd 05, 02:59 AM posted to rec.aviation.owning,sci.electronics.design,alt.solar.photovoltaic
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Default Wind/Solar Electrics ???


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  
Old December 22nd 05, 09:49 AM posted to rec.aviation.owning,sci.electronics.design,alt.solar.photovoltaic
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Posts: n/a
Default Wind/Solar Electrics ???

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  
Old December 22nd 05, 03:22 PM posted to rec.aviation.owning,sci.electronics.design,alt.solar.photovoltaic
external usenet poster
 
Posts: n/a
Default Wind/Solar Electrics ???

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  
Old December 22nd 05, 03:40 PM posted to rec.aviation.owning,sci.electronics.design,alt.solar.photovoltaic
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Posts: n/a
Default Wind/Solar Electrics ???

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  
Old December 23rd 05, 02:56 AM posted to rec.aviation.owning,sci.electronics.design,alt.solar.photovoltaic
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Posts: n/a
Default Wind/Solar Electrics ???

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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