White LED Head Lamp


Posted on Sep 30, 2012

This is a practical white LED head mount lamp (flashlight). Recently many white LED flashlights appear on the market. However, most flashlights require three cells because they are regurating output current with only series resister. The odd number of cells except one is not good, and a margin between VLED and VBAT is too small, intensity of light is affected by variation of input voltage within the battery life. Thus I built a white LED head lamp which operates with two cells and controls output current.


White LED Head Lamp
Click here to download the full size of the above Circuit.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Gasoline engine tachometer
Homemade HiFi
8W Flouroscent lamp driver
Bob Beck Electrifier
Remote antenna for 60 kHz (WWVB) reception
Bipolar stepper motor driver circuit diagram



Top