Use A Boost Converter To Create An Auto-Dimmable LED Flashlight
by Jianwen Shao, applications engineer, STMicroelectronics, Schaumberg, Ill., Electronic Design, Jul 24 2008
Focus:
A boost converter automatically dims an LED flashlight when battery voltage is low, providing users with a warning about the need for battery replacement and extending battery life.
What you’ll learn:
- How to automatically dim an LED flashlight as battery voltage falls
- How to build a boost converter with automatic dimming for powering an LED flashlight
Notes:
ED's Ideas For Design
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