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How to measure Buck LED driver efficiency

I've build a custom LED driver based on a DC/DC Buck converter with a current feedback loop. It works pretty well, the calculated efficiency shall be somewhere around 95%, but I'm struggling with ...
Jakub Kaderka's user avatar
0 votes
1 answer
344 views

LED array at high current or high voltage?

Is it more efficient to drive LEDs at a high current and low voltage, than a lower current and high voltage? I'm in a situation where I have to design an LED driver for a custom CoB emitter, so can ...
Sensors's user avatar
  • 1,315
2 votes
1 answer
2k views

A basic buck converter circuit to power 3W LEDs from PC power supply?

I'm just finishing up my first electronics course (edx.org), and I want to build some LED grow lights for starting seedlings in the winter. I have high power LEDs, like this one here, and I have a PC ...
Rob N's user avatar
  • 1,035