Originally posted by dllabarre
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If you go on the web and price, you'll find that pure sine wave inverters cost more than twice maybe three times as much as modified sine wave inverters. And they are hard to find in small capacities. Some electronic equipment is not immune to noise produced by modified sine and need a pure sine. Modified sine inverters can very efficient though ... in the high 90's. As long as you are not trying to drive a highly inductive load then modified is fine.
Greg
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