My TV (or stereo) works fine when running on shore power, but when the inverter is running I get audio noise/snowy picture. What causes it?
Lower cost inverters use square waves or modified sine waves for their output. The noise that you hear is the high frequency components of these lesser quality outputs coupling through your TV or stereo. You may be able to reduce the problem by installing a power line filter from Radio Shack. These filters are often used to reduce radio interference from HAM radio operators. They sometimes work for low cost inverters. The best solution (and much more expensive) is to operate from a better inverter such as a sine wave inverter. Q: I have a dash radio that is draining my engine battery. A: Switch your 12V source for the radio to the house battery.
