Another important concern is the balance of currents that flow in multiple strings. We know that two or three strings of LEDs will have different combined forward voltages. The LED driver will deliver ...

This file type includes high-resolution graphics and schematics when applicable. This design describes how to light a string of LEDs of any color from a 1.5-V cell using just a few inexpensive ...

A change in the forward voltage (VF) for a string of series-connected, high-brightness LEDs (HB LEDs) can indicate deterioration or complete failure of one or more of the LEDs. Accordingly, this ...