justDIY Project Log

Welcome back everyone… or at least, welcome back to myself.

I took the week between Xmas and Newyear off, and caught up on some non-electronics.

I have a few things in the skunk works, not that they’re really secret or anything, but I’m reserving a lot of details until the projects are farther along - hoping to write up some articles rather than just short posts in the blog.

For now, here’s a few pictures:

switch mode power supply … this circuit is a buck converter or step-down regulator … it’s programmed to supply 500mA into a load (constant current regulation). With my load (seen below), I measured about 90% effiency.

four warm-white Luxdrive IO Moon leds, two watts each, using Nichia Jupiter leds (click for larger picture)

same leds above, lit up

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This entry was posted on Wednesday, January 4th, 2006 at 11:30 pm and is filed under LEDs, Power, Project. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.