[volt-nuts] Lm399 heater

Fred Schneider pa4tim at gmail.com
Sat Sep 15 18:38:09 UTC 2012

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.


Op 15 sep. 2012 om 19:08 heeft Bob Smither <smither at c-c-i.com> het volgende geschreven:

> On 09/15/2012 08:54 AM, Fred Schneider wrote:
>> Hi Mickle ( and the rest )
>> Thank for the answers. I only looked LM399 but looking for LM199 gives more
>> info. The LM399 is now running, just on its own without the buffer as test to
>> know the excact voltage. It started after a few minutes at 7.031,321 and
>> after an hour it was 7.031,345V. I must go on a visit now so it is turned off
>> for now.
> Unless you want to track the first few days of stability, why not just leave it
> on?  I have a Traveling Standard (see: http://www.c-c-i.com/ts ) that has made
> the round trip to some of us volt nuts.  When I get it back I leave it on 24/7
> to get it along towards its ultimate stability.
> -- 
> Bob Smither                                              Smither at c-c-i.com
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