RECHARGEABLE_LED_FLASHLIGHT

Published:2009/6/19 2:46:00 Author:May | From:SeekIC

This flashlight is useful for applications where night vision and/or darkness adaptation must be maintained. It uses an HLMP8150 T4 LED with a wavelength of 637 nm. This schematic is for the flashlight module. When the battery pack consisting of the four NiCad cells is fully charged (and there is no voltage at J1), 4.8 Vdc flows through trimmer potentiometer R2, the normally closed con-tact of relay RY1, and push-on/push-off power switch Al. Trimmer R2 limits the current flowing through LED1. Switch 51 can turn LED1 on and off when the battery is not being charged.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/LED_and_Light_Circuit/RECHARGEABLE_LED_FLASHLIGHT.html

Print this Page | Comments | Reading(3)