[time-nuts] Reducing lab noise with LED lighting.

Tom Holmes tholmes at woh.rr.com
Mon Sep 17 14:21:07 UTC 2012


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-bounces at febo.com [mailto:time-nuts-bounces at 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 at febo.com To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.





More information about the time-nuts mailing list