What's you project about? 

It consists of a very safe, economical and efficient touch machine that can last a long time on the battery. The circuit is very small therefore the box can be small

Why did you decide to make it?

I always wanted a touch machine, but I wanted to make it on my own, so applying my knowledge I managed to make one with some elements that I wanted to have

How does it work? It works thanks to the TIP31c Transistor that makes the transformer do as the current change, that is, it helps the transformer pass the current since it cannot do it alone. And with the potentiometer we regulate the intensity that passes through the transistor and thus regulate the intensity of the touches