[sdiy] LED current source needed for 'digital' outputs?
juzowen at gmail.com
Sat Mar 1 13:45:24 CET 2014
Hello, just a little double-check here...
For an LED displaying a changing or AC signal I would always use some sort of transistor current source.
For an LED displaying a simple on/off digital signal - e.g. a logic output - is there any reason to not just use: Source > LED > R > GND?
This is a circuit being used in a modular environment so it will need to play nice with its neighbours and optimal/'reasonably' low current draw is a normal priority.
More information about the Synth-diy