Some of the LED assemblies are stacks of diodes and the Vf is 2.5 to 3.5 volts. How about powering them from a 3.3 volt PC supply? Plenty of amps available and those switchers have typically had to have their EMI emissions cleaned up.
Tom Holmes, N8ZM Tipp City, OH EM79 > -----Original Message----- > From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On > Behalf Of Tom Knox > Sent: Sunday, September 16, 2012 8:09 PM > To: Time-Nuts > Subject: [time-nuts] Reducing lab noise with LED lighting. > > > In this green era here in the USA there is a big push toward CFL lighting. Problem > is I can see my CFL lighting on my PN measurements and other equipment. I am > finding it is very noisy so I have started researching cost effective LED lighting > and was amazed at what is available. On eBay there are 10 to 100 watt raw chips > for $2-25.00 but that is equal to about 5 times the lumen of incandescent lighting. > I was going to try building the heat sinks and supply into my existing bench > fixtures. > I will post more info soon. > Thomas Knox > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.