QUOTE=Krumlink]I have been overloading the little FET, SO this time I worked on it and I built TEH BEAST!
I am going to improve the coil on it
C1
Power: 30 Joules (going to improve it soon)
Voltage: 150VDC[/QUOTE]
Trying to help you here, but it is unclear to me at what stage you are. That is, what is working and what is not? Please correct any of the following assumptions that are wrong.
As we left the story on the previous page, you had obtained a flash unit from a disposable camera, removed the PCB and determined that you could get the capacitor to charge to 250 V in 2 sec. Then, you gave the part number for a transistor on that board (?) and later a link to a datasheet for it. The transistor appears to be a medium power NPN with a max collector current of 5A and hfe of 350. Somehow, the discussion then switched to MOSFETS and now FETs.
Are you calling that transistor a FET? Have you substituted a FET into the circuit and got it to run? What sort of voltage are you seeing and what size capacitor are you using?
Last, when you say that you cannot get it to "fire," do you mean that you cannot get the capacitor to discharge or that you can't get your coil gun to shoot? How are you trying to discharge the capacitor and do you know that your coil gun circuit would work even if given enough power?
John