Almost all inexpensive commercial LED flashlights use a 4.5V power supply—three AA or AAA batteries—because white LEDs require 3.3 to 3.5V to fully turn on. Thus ...
This led lamp circuit can be used as a mini led flashlight. Together with a 1.2 V rechargeable battery, all the components fit into a small enclosure. This is actually a DC to DC converter that ...
The SP6648 provides an efficient drive current for an LED flashlight using a Luxeon I light source. To view the application note, click on the URL below. Circuit selected for www.eepn.com by Rahul ...
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