Coil Gun Project - Help Request.avi

I'm building a coil gun, and I need some help with the electronics.

Too charge the caps, I'm using a modified photo flash charger, but it takes too long (way too long for the final gun) . What kind of circuit can I use to charge the caps faster?

What kind of circuit can handle the amount of power I'm sending through the coil. I want to be able to fire it by pressing a small 'trigger' button. The only thing I can think of is running several high power transistors in parallel to spit up the current...but that seems pretty 'bruit force' to me, and the transistors are expensive.

Finally, how do I convert microfarads to amps. Right now I'm running 5280uF at 400V...but I plan on having 20k-30k uF. I need to know how many amps of current is flowing through, so I don't fry anything.

BTW...My test coil is about as strong as a paintball gun on a low setting. It left a welt for a day after shooting myself with it.

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[mashersmasher]

like others have said you can use a flyback to charge the circuit faster. you can use a relay rated for 400v which is simple and effective. also you will likely want to ditch that coil if you are going to increase the number of capacitors since you would be wasting energy through heat using what looks like 20ish gauge.

[Beasile]

@mashersmasher

that was one of many different test coils I made to experiment with different winding patters and number of wires to use, so I can get as much power as possible when I make the coil for the actual gun. that coil had 3 wires in paralel to get the highest current flow.

[Meiklelodians]

I don't even know what a coil gun is....but good luck?

P.s How is that beautiful tarantula of yours?

[Beasile]

@Meiklelodians

a coil gun fires a projectile just like any firearm, but it uses a magnetic field (electromagnet) to propel the bullet...instead of gunpowder.

other than finding out my rosehair is a male, my tarantula is fine. thx,

[VladAxon]

Hi, sory for my bad english.

For fast capacitor charging u can use a flayback converter or push-pull.

You can find some shemes in google, just write "IR2153" or "UC3845" this is the chips for simply charging circuits.

Next. You can know you current if you know a resistens of you coil. Ucapacitor/Rcoil=Current.

[Beasile]

@VladAxon

cool...thanks

[MrAgilwibowo]

try 450v boost converter . its simple and fast.

[Meiklelodians]

I don't even know what a coil gun is....but good luck?

P.s How is that beautiful tarantula of yours?