24th of March 2009 19
I bring the output wires from my 7500V 30ma neon sign transformer close together (about 1cm to 1/2 inch) and and a yellow arc forms. It is then drawn out to between an inch and 1.5 inches. Yellow is hotter and more powerful than the purple arc from a Tesla coil. I was very careful to make sure that nothing got in the arc because it would burn stuff if it got the chance. I also was careful to keep from getting myself in contact with the arc (that would hurt!!!!!). Unlike a Tesla coil which uses high frequencies, a neon sign transformer uses 60hz (very low frequency). The threshold of pain (depending on what you read) is 5ma to 10ma. The current it takes to kill you (depending on what you read) is 50ma to 100ma. 30ma is in the middle but I avoid shocks to be safe anyway, because the same chart that said it takes 100ma to kill also said that it could be lethal at 10ma. Which is it? Does it mean instantly at 100ma but several seconds (enough time to get away) at 10ma? 60hz is also bad because your body is more sensitive at lower frequencies. In fact, I once heard that a person’s heart is especially sensitive to 60hz! Although to get the electricity to go through the heart specifically it would probably require intentional specific placement of the wires. The point is I’m careful because I know the dangers.