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Steve Spence wrote:
philkryder wrote: Steve - How many equal "steps" are necessary for the MSW inverter to be a sufficiently close approximation to a "rotary" sine wave? That depends on what you are driving. A laser printer requires closer representation than a computer. The manufacturer of a particular load could tell you that information. The old test of whether something was sine or some version of square was a lamp dimmer. On a square wave unit the light goes full bright. We have a touch lamp that will not change state on MSW, but will on generator. A lot of ac loads are quite happy on dc. Almost anything that rectifies the mains waveform will run fine on dc of V_mains x 1.414. NT |
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On Tue, 20 Dec 2005 23:35:15 -0800, meow2222 wrote:
Steve Spence wrote: philkryder wrote: Steve - How many equal "steps" are necessary for the MSW inverter to be a sufficiently close approximation to a "rotary" sine wave? That depends on what you are driving. A laser printer requires closer representation than a computer. The manufacturer of a particular load could tell you that information. The old test of whether something was sine or some version of square was a lamp dimmer. On a square wave unit the light goes full bright. We have a touch lamp that will not change state on MSW, but will on generator. A lot of ac loads are quite happy on dc. Almost anything that rectifies the mains waveform will run fine on dc of V_mains x 1.414. NT Well, don't plug a 120VAC wall wart into 170VDC! Or should we alert the Darwin committee? ;-) Thanks! Rich |
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wrote....
"A lot of ac loads are quite happy on dc. Almost anything that rectifies the mains waveform will run fine on dc of V_mains x 1.414. " ....unless there is a transformer at the input to the power supply. Only thing that'll happen then is the transformer might get hot. Randy |
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