I am building a pyrograph and I am not very good in the area of electronics, it is not what I studied, but with some effort I have already built the primary and secondary inductors in a toroidal core I would like to know if I can only pass half a wave to the transformer to So reduce the work of the same and make a voltage drop? Thanks in advance note: If I am talking about something that can not be exploited or haha, I clarify that I do not have much knowledge of electronics or electricity.