"cnctut" wrote in
oups.com:

Any reliability issues concerning a new Sharp R-1540 microwave to power
it off a square wave inverter when camping? Is there any real
difference between "square wave" and "modified square wave" inverters?

Thanks

Tut


Iron-core transformers do not like square waves-the harmonics just generate
excess heat in the core.You would need a hefty inverter to power the
average MW oven;they run about a kilowatt output(~15A@120VAC input),and
with an iron-core transformer,the startup surge would require more inverter
power.

"modified squarewave" inverters generate a stepped version of a sine
wave,reducing the harmonic output.

--
Jim Yanik
jyanik
at
kua.net