hello dosto , mera naam hitesh jangid hai . mai waste chizo se creative projects,things,toys , daily uses things etc banata hu , so guys please channel ko subscribe kare or mujhe support karen. mai daily new new videos aapke liye laata rahunga . thank you so much .....
dude just used a high voltage pulse generator and added a casing to it. He did not make the transformer he only made the case( I think he made the case)