Forum Discussion
Gdetrailer
Sep 15, 2021Explorer III
2oldman wrote:CA Traveler wrote:Never heard of an MSW gen.
BTW Do not expect the Kill A Watt to function correctly with a MSW gen
OK, well, all "inverters" use PMW (Pulse Width Modulation) to simulate a "sinewave".
The give awy to this is when you read the label on the gen..
Kindly notice that the label says "DIGITAL".
Digital is 100% the opposite of a sinewave..
Digital anything is 100% ON, 100% OFF.
100% pure sinewaves do not have that characteristics.
To make a sinewave using digital methods they use PWM and depending on how many steps or samples they use creates a very coarse looking sinewave for low sample rates or if they use very high sample rates you ending up with a reasonable looking facsimile of a sine wave.
Another way to look at this is the difference in sound quality of a audio CD recorded using 44Khz sampling frequency and say a lower rate of a MP3..
Fair chance some of the lower cost of a Ryobi gen is the use of a much lower PWM rate saving costs in quality of the inverter parts..
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