Step 1: Introduction
First of all, Im not going to explain how j.t. circuit works, or how to make one, for those information you have to look for other sources.
I will explain how to use j.t. circuit with bicycle light and convert it to efficient and relatively cheap source of light.
Ive bought cheapest bicycle light for this project (1 euro) and a small lever switch.
Electronic switch cant be used with 1,5 volts or less so we are going to dismiss it and use small lever switch which will make whole project little more bulky than original one but that’s the price of transferring from 4 AAA cells to only 1 AAA cell.
Take out leds with soldering iron.