My 330V 78Joule Coilgun





Introduction: My 330V 78Joule Coilgun

I built this for a school project faire. It has slots for different size coils so I am not limited to one barrel. It has a custom built control box with: Power, HV in, 2 switches to control which capacitor bank to charge, and a firing switch... As you can see I also made the power supply too. I bought the metal case at fry's electronics down in burbank, CA. It has a power indicator and charge indicator LED to tell when the capacitors have reached maximum charge. It takes about 30seconds for one bank to charge. Each capacitor bank consists of 6 330VDC 120uF flash capacitors.



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will somebody get this dude a silicon controlled rectifier

very cool. check mine i just made one

"sparky" can be charged with a camera circuit as long as you hook it up to a voltmeter to make sure it doesn't overcharge.

lol. same handwritting as mine. however you could have used acrylic sheets for more aesthetic view. nice control panel awsome. a better work could have been done with your coil. what type of wire did you use

the one that's on it now is 30AWG

Neat control panel! I see you use the TV connectors for power supply! lol, I do too! They work really great.
  1. How many Amps are the Caps being charged with? and, by extension, how many watts are the Caps being charged with?

300Volts at 0.16amps (16ma) wich equals to 48 watts.. Its not much I know but its only 1 flash curcuit, Im actually making a new charger that can handle 500VDC at 5 amps, I also bought some giant 2400uF 500WVDC capacitors too. I will post some pics later.

0.16 amps actually equals 160 mAh.
500V 5A?? thats insane. do it!