Originally Posted by Ged117

Great. I'm not exactly sure how I would connect the rectifier to the batteries in the tube. Alternative: I could wire a capacitor like he used into the circuit (I'm not sure which wire / connection I would interrupt to connect it - perhaps his project is a good guide for that). Then, I could hide the parts inside the battery tube, and with the capacitor, I won't need the D cells!

There won't be room for the capacitor and the rectifier in the tube (I think). I wonder if I could put the rectifier in the tube, and the capacitor inside the headlamp somehow on a circuit board? The bulb holder might be in the way. Hmm.

Ged