Looking at you tube videos how can I convert 12v to 120 v I know I need a transformer 120-6v and a relay,a 1uf capaciter,and a bridge rectifier what is a good diagram to follow
I'm teching some kids help please?

A bridge rectifier converts AC to DC. You can't transform DC. Are You Sure you don't want to go from 120 to 12?

THere are ways to do it... how quick and dirty can the result be? Clean sinusoidal A/C will be well beyond your ability... but a very dirty A/C can be accomplished by a means of interrupting a DC current into a transformer primary at a very regular rate, the output of the secondary will be a very dirty square wave A/C, but it will be A/C.