Simple production of the inverter

Since the start of the instantaneous current larger TV, you must consider the inverter waveforms, power margin, power factor, and so the production of soft-start control, so do it yourself  12v power inverter  requires professional knowledge and skills, more difficult, if not road easily damaged by electrical or inverter itself. Besides, 12V motorcycle battery capacity is 7 or 9 Ann Ann, separate 100W bulb for 40 minutes on the use of a 21-inch color TV also does not take 40 minutes, if it is an old battery, charging waited a long time, not a few comes to an end. The best solution is the choice of 300W UPS External around 50 Ah car battery.