On 22-Nov-05, at 5:47 PM, Peter Martin wrote: > Sorry, I didn't catch all the previous thread! > > Any of you have experience with just having a modified sine wave > powering computer equipment?
Anything that uses a switching power supply should be OK, because the first thing it does with the incoming AC is to convert it to DC. CRT monitors and laser printers might have problems. Amplified speakers or other audio equipment will probably not work well. "Modified sine wave" is a marketing term. It's actually a modified square wave; the unit steps the battery up to a higher DC voltage "V" and then switches the output between 3 states: +V, 0, -V. This is easier and cheaper than generating something that actually looks like a sine wave. The "RMS" (= "average" for a non-EE) value of the voltage is the same as the sine wave it is simulating, but the peak value is different and there will be strong harmonic frequencies present (as others have mentioned). _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
