led driver

I am looking for led driver using two transitor to run three led & also to run one led from 0.9V To 4.5 V along with the pcb design if any body has it please let me know about it
Manish
e mail manish63@gmail.com

No one's going to do all the work for you.

I suggest you do some research on the Joule Thief.

**broken link removed**
Low volt LED Flasher | Circuit Project Electronic
Joule thief - Google Search