Hi. If a 555 circuit switches on and off a mosfet at 60 hz and the output of the mosfet is hooked up to the input of a transformer, does the output of the transformer put out a 60 hz sinewave or what kind of wave if not a sinewave? Im guessing its a sinewave because the transformer input should be synonymous with bringing a magnet close and then backing the magnet away aka im guessing turning off and on the supply to the tranformer input would create a rising and collapsing field, which should create a smooth rising and collapsing sinewave. But all i have is ideas/guesses and no degree, and so i humbly ask for your help understanding this. Thanks.