Hi,
I have a heap of 10W led chips and am considering building a high power LED flood light powered from the main.
I know there are plenty of very well designed and documented circuits out there.
But this came to mind:
Simply rectify the main, and inserting an inductor and Schottky diode to form a closed loop, allowing free wheeling when switching off the MOSFET...
Hey! I reinvented the buck converter.
Is there any particular reason not to use that simple of a circuit when driving power LEDs? Of course, you would want to add a current sensing/protection and eventually a temperature sensing.
Yet in the few power LEDs I bought, they use much more complex circuits, even if there isn't always a main insulation. But despite the complex circuits, they still flicker?
Thanks in advance for pointing to the obvious issue I am not seeing. :-P