CREE Design Circuit 12Volt Power Supply Diagram

Gdetrailer wrote:

Although there are switching regulator chips you can buy, not really recommended for the amateur DIY person since in the wrong hands without proper circuit design you can end up with a very bad RFI transmitter..

I think you might have described what i did!!! Total amateur without a clue. I made some LEDs designed for RV use and was getting weird noise at times. Wasnt smart enough to know the problem. I had asked on some electronic forums. Ended up buying ferrite rings in hopes for a cure. But again i didnt have a clue what i was doing. The lights work great but at certain dim levels i can here a noise. My girlfriend swears she cant hear it but i do. The fix was easy enough to get by. I run them full blast or very dimmed. Been a good 3 or 4 years i dont even think about them anymore. I did use CREE leds though. Still have boxes of material and completed lights laying around.