Aside from electronic stuff, I also like playing with high voltage. Here's a Tesla coil we built about 6 years ago. It stands about 6 feet tall and throws 7+ foot sparks. It consumes about 7.5 KW and 14.4 kilovolts from a 10 KVA pole transformer. Check out the video here if interested.

Stu
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If you want it to break, buy Sony!