How to make a Joule Thief circuit that powers a Compact Fluorescent Lightbulb (CFL) using batteries, in this case the Jeanna's Light approach. I go step-by-step on how to make the circuit, including details on how to wind the coils which is the trickiest part. This uses just two AA batteries, a switch, a 2N3055 power transistor, a 100 ohm variable resistor or potentiometer, a ferrite toroid core, and for the coils, some 30 gauge magnet wire along with some more thickly insulated wire for the high voltage side. I also do some demonstrations lighting up my office, outdoors and for reading.