Simple Kodak camera flash circuit, the green line is the negative to the GDT (Gas Discharge Tube) the blue is the trigger, connect the other end respectively to ground :) By the way, the 1k turns on the secondary is really 1.75k turns but I can't make a transformer go that high here, and didn't feel like putting mH in the primary.
The left most switch is the charge switch, outter most right switch is the fire switch
I made this using the web app :)
