Please do a post (not thread) search for SINE WAVE
. Here is a previous posting I made: Make sure you get a pure sine wave inverter
as it more effectively processes the frequencies [from The Inverter Store
: "Devices that require a pure sine power
inverter include: variable speed motors or power tools, televisions, laser printers, computers and telecommunications equipment, and many medical devices such as most CPAP machines. Without a clean power sources, these types of devices simply will not run, or you may risk shortening their lifespan and causing them to fail prematurely."].