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

[Poul-Henning Kamp]

In message <9AE0E07A-568C-43D1-8CB6-0D0E21EE6541 at rtty.us>, Bob Camp writes:

>The thing that makes the CFL's nasty for lab use are the cheap
>little switchers built into them. Conventional LED lights also have
>cheap little switchers in them. Doing them with a 30% efficient
>linear regulator gets you back to halogen type lumens per watt...

I run my led-lights directly off my 12V battery backed supply without
any regulation, just find the right number of LEDS to connect in
series for the maximum charge voltage, and live with a little less
light in hold-over mode...

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.