On 09/15/2012 01:38 PM, Fred Schneider wrote: > Hi Bob, It will be on 24/7 but this was the first test on a lab-psu. I have > about 50 wall contacts. About 10 are 24/7 on, they feed my guildline cabinet, > timestandard ect ( there is also an UPS in between). When I leave my lab all > other contacts are switched off at once for safety. So if I wanted to let it > powered I had to do a lot of work to put the psu on a permanent contact ( the > psu is under pile of other gear and the mains wires are all behind the > shelfs. The permanent contacts are not near the bench. All ovenised and other > 24/7 powered stuff is in one corner.
Hi Fred, Sounds like a great setup. Expanding on my first comment, it is pretty interesting looking at an LM399 when first 'activated.' I recently brought up a second LM199 that I have had for decades and never powered. I charted the difference between the new one and one that has thousands of hours on it. Interesting to watch it settle in over a few days. Best regards, -- Bob Smither, PhD Circuit Concepts, Inc. ========================================================================== "I cannot undertake to lay my finger on that article of the Constitution which granted a right to Congress of expending, on objects of benevolence, the money of their constituents" -James Madison, author of the Constitution ========================================================================== [email protected] http://www.C-C-I.Com 281-331-2744(office) -4616(fax)
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