Introduction: My 330V 78Joule Coilgun

Picture of 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.


tazerboy (author)2011-07-03

will somebody get this dude a silicon controlled rectifier

Mudbud (author)tazerboy2011-09-02

lol :P

hbombinator (author)Mudbud2012-10-16

i dont get it

ARJOON (author)2011-04-29

very cool. check mine i just made one

nagasgura (author)2011-04-17

"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.

ARJOON (author)2011-03-09

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

Mudbud (author)ARJOON2011-03-09

the one that's on it now is 30AWG

jensenr30 (author)2011-03-05
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?
Mudbud (author)jensenr302011-03-07

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.

jensenr30 (author)Mudbud2011-03-07

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

Mudbud (author)jensenr302011-03-07

yeah that was a typo, sorry about that :) And yes, 500V at 5 amps will be EPIC! I am almost done getting all the parts together...

jensenr30 (author)Mudbud2011-03-08

Damn straight it will be epic! post some pics of how far the nail lodges into the 2x4 !!

Mudbud (author)jensenr302011-03-08

LOL ok!

Mudbud (author)jensenr302011-03-07

I don't know exactly but its less than one.. I will get my ampmeter out and test it...Along with the watts, how do I calculate that??

jensenr30 (author)Mudbud2011-03-07

Watts = Voltage x Amperage
So if I have a line with 110 volts and 20 amps, it can deliver 2200 Watts.

Mudbud (author)jensenr302011-03-07

ah ok I see. I will let you know later today, I have school right now :/

jensenr30 (author)Mudbud2011-03-07

hah! lol. you just can't stay away from instructables and the electronic hobbyist world can you? neither can I.

Mudbud (author)jensenr302011-03-07

nope I can't :P

Mudbud (author)jensenr302011-03-07

Yeah! even when I do school I think of electronic stuff! lol

zack247 (author)2011-03-04

what is in the power supply? is it a camera flash charger?

Mudbud (author)zack2472011-03-05

Yes it is. Its all I had at the time.

zack247 (author)Mudbud2011-03-05


zazenergy (author)2011-03-04

Very cool!

Mudbud (author)zazenergy2011-03-04

Thank you!

About This Instructable




Bio: “Let the future tell the truth, and evaluate each one according to his work and accomplishments. The present is theirs; the future, for which I ... More »
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