Step 3: Fun with tin foil

Picture of Fun with tin foil
Here is what happens when you short out the cap bank with tin foil.
Bogomir676 years ago
We used to charge the caps and then throw them at somebody (from the rear, when he was not looking, anyway), and yell "CATCH". Out of reflex - everybody will, getting a ZAP... ... yeah, yeah, I got zapped myself a number of times that way...
I've done that. Too much fun to load up a cap with, say, 30 volts, then yell, "Think fast!" and toss it to someone. For more fun, bend the leads backwards and wear latex gloves, so that the outer edge of the cap has the leads running down it. The gloves keep you from getting zapped.
SteveUK8 years ago
When I was a kid, I used to just connect up a 9v battery to a high farad capacitor. Then I would use wires coming from the capacitor to makes sparks on tin foil. You can cut through the foil and it's a bit like a mini welding kit.
Thats what I did once, I paralleled two 6800uF audio capacitors,which cost nothing, then charged them to 12VDC. They charged pretty quickly and then I discharged them through a metal screwdriver. Big spark, temporerily magnetized screwdriver.
Where Did You Get Those Big Capacitors?!?!? How Much Did 1 Cost!?!?! I Bet 1 Costed $20 At Least
joinaqd6 years ago
why dont you make a door-knob shocker?put tape over the door-knob,then put aluminum foil and tape them on the sides and connect them to like 200volts and shock visitors coming to your home?
Unless you use small caps, You electrocute the person enough to have a heart fibrillation.
joinaqd6 years ago
how many uF are those caps?
i'm amazed you haven't tried making a rail gun or a coil gun with those.
louis2096 years ago
How could I make this
How much voltage dose it produce
jgg7 years ago
Good to see another setup like mine. I have a dozen cap's (25V), AL bus bars, SCR, and some heavy cable cobbled together to make a useful spot welder. Does a great job on thin gauge stainless sheet, and thermocouple beads (using a pure carbon electrode).
I'm pretty sure you already know this, but wouldn't a switch let you set it off from a safer distance?
What were you measuring on your meter?

Btw those are large capacitors!!
GoodAtIt (author)  technopenguin8 years ago
Are those LEDs on top of the fan?
KronoNaut8 years ago
With a little more thought, and a bit of wisdom, you could make a great mad scientist.
Karim8 years ago
Where do you get those bank things?
GoodAtIt (author)  Karim8 years ago
a garage sale
why have them just laying in your basement... you should have used them sooner...
Fiapo8 years ago
Great effects!!!! :D