Warning:
High voltage can be present on the (+) out of the secondary coil and/or elsewhere in the circuit It could be as high as 1200volts or more. It can/will "burn" your skin upon contact. If you decide to build this circuit, you do so at your own risk. Don't be stupid.
Extreme caution should be exercised at all times if you decide to build this circuit.
View/print the drawing in this video:
http://capindreswebsite.com/simple-12...
Just a simple circuit that works good for CFL's and LED lights.
Also see how I built the high voltage coil at:
• High Voltage coil build CFL & LED circuit