Do laptops and cell phone chargers require pure sine wave or is the Magnum MM612 AE inverter/charger good for my application?

Comments

I think it would work.

The User's Manual (pdf) says:

Appliances that will run from a Modified Sine Inverter
Today’s inverters come in two basic output waveforms: modifi ed sine (actually a modifi ed square wave) and pure sine wave. Modified sine wave inverters approximate a pure sine waveform. The output of a modifi ed sine wave inverter will run most electronic and household items including but not limited to TV, VCR, satellite dish receiver, computers, and printers. Some devices such as rechargeable power supplies for phones, drills, and other like devices may not run or be damaged by modifi ed sine wave inverters. 

Also at Magnum's website:

How do I know if I need a sine wave, or if I can live with a modified sine wave?

The following gadgets work well with a modified sine wave: computers, motor-driven appliances, toasters, coffee makers, most stereos, ink jet printers, refrigerators, TV's, VCR's, many microwave ovens, etc.

Appliances that are known to have problems with the modified sine wave are some digital clocks, some battery chargers, light dimmers, some battery operated gadgets that recharge in an AC receptacle, some chargers for hand tools (Makita is known to have this problem). In the case of hand tools, the problem chargers usually have a warning label stating that dangerous voltages are present at the battery terminals when charging.

 

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