Quote:
Originally Posted by engineerdude
Why have the relay at all you may ask - doesn't the switch SW1 do the same thing as this circuit in the red box?
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Plus the point of the circuit is to dump all the charge from the Caps into the coil as quickly as possible. A simple switch would be inefficient at this as a lot of the energy would be lost in the arcing of a switch's contacts.
The clue is in the name - this is a coil-gun - the massive pulse into the coil will create a magnetic field which (as it rises very rapidly) will induce an opposing magnetic field in the slug of iron which will cause the iron projectile to be ejected away from the coil at speed.
Let us all know how you get on if you get this coil gun to work.
The Vapinator.
