SCVJeff wrote:
The one thing you can do to help RFI coming off the boards is to twist the +&- together both in and out of the stitcher board. Start the twist as close as you can all the way to the LED board. Likewise to the power switch on the input side. When I was working on reducing RFI on some LED's I have, this has the single biggest effect on radiation coupling out the antenna.
Maybe Roy Ken can try this if he has any of his old regulated led lamps around. I don't have any radio receivers in use in my rig, other than my cell phone and it operates in the microwave bands... my coach radio plays tunes off a usb stick or bluetooth from my phone, and my tv plays movies from the phone or (ripped) dvd library :)
SCVJeff wrote:
Question: Why didn't you just buy 3000k 3W boards rather than building them?
I bought a bunch of these carrier boards from a start-up in Germany when the Rebel first came out, so it's less expensive for me to reflow my own at this point. The cheapest 3 rebel star I can find right now, built with the LEDs I want is almost $14 a piece, plus shipping. There are cheaper options out there, but that's not what I'm after. As far as the 'other' brand of high-power LEDs go, their new COB disks look interesting, but the high forward voltage is a turn-off.
Lumileds, before they got swallowed up by Philips was a cool little company. I've got some of their early prototypes and they actually sent a sales engineer all the way my little home town just to have lunch with me and chat about projects. But, that was ten years ago, not so much love from them now but I still like their products.
