I reached over to move a large electric fan, that had a short in it and was hot with 120 volts of good 'ol Alternating Current. After that experience, I was hooked on electricity. A lot of fascinating stuff for a curious kid like me. He is a superb machinist and craftsman of the first order. He helped me with the machining and design of many of the parts, adaptors, couplings and other things too numerous to mention.
Voltage is regulated by a homebrewed regulator .
It is capable of 700 watts at 120 Volts AC or DC output. The AC frequency is about 250 to 400 hz, depending of engine speed. Lightbulbs don't care what frequency they operate at. Devices that are power-transformer operated, such as a radio, TV, VCR, etc. This makes it possible to operate any universal-motor operated device.