I have some older Luxeon high power LEDs and bought some drivers (spec below) to power them. They work fine for what I need. However, I am going to be controlling these using TIP120 circuits (one to one) from an Arduino and it occurs to me that I don't know if I should be controlling power flow to …

Should I control the high power LED or its driver?

MarkT September 18, 2012, 3:39pm 5

I'm not suggesting switching off the driver outputs, but switching off the whole driver circuit low-side. Much easier.

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