I'm working on a circuit for a paintball gun that will drive a 12v solenoid. I have the timing circuit completed with a 555 timer (for full auto). My problem is that I want to charge up a 2200mf capacitor to 12v from a 9v battery and discharge the the capacitor through a transistor or section of transistors to fire the solenoid. I had planned on using a single NPN transistor but if anyone has any idea's I'd love to hear them.
**broken link removed**
**broken link removed**