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Detection circuit lowers stress on LED driver with power-line dimming

Posted: 15 Jul 2011     Print Version  Bookmark and Share

Keywords:decoupling capacitors  LEDs  supply voltage 

A modification of the current-control circuit in a low-voltage LED system allows use of a chopped supply voltage to modulate the LED intensity. The circuit prevents inrush current to the decoupling capacitors by turning off the LEDs during intervals when the supply voltage is off.

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