Hi guys, you have probably ad nauseum been discussing this theme but i cannot help to bring it up again.
Bill Marsden has a very good tutorial on current limiting circuits for LEDs with transistors here http://forum.allaboutcircuits.com/showthread.php?t=18277
The purpose of this post is to find the most cost effective circuit for LEDs that on the one hand provide stable power for the LEDs and at the same time, if a component (LED) were to fail, the circuit automatically shuts down that part, so as to save the rest of the LEDs.
Now, I've been doing some googlesearching and came up with the following circuit http://www.onsemi.com/pub/Collateral/AND8109-D.PDF, which has already been mentioned in this thread but did not get enough attention according to me. http://forum.allaboutcircuits.com/showthread.php?p=114830
Bill Marsden has a very good tutorial on current limiting circuits for LEDs with transistors here http://forum.allaboutcircuits.com/showthread.php?t=18277
The purpose of this post is to find the most cost effective circuit for LEDs that on the one hand provide stable power for the LEDs and at the same time, if a component (LED) were to fail, the circuit automatically shuts down that part, so as to save the rest of the LEDs.
Now, I've been doing some googlesearching and came up with the following circuit http://www.onsemi.com/pub/Collateral/AND8109-D.PDF, which has already been mentioned in this thread but did not get enough attention according to me. http://forum.allaboutcircuits.com/showthread.php?p=114830
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