On 9 July 2013 04:52, Mark Spencer <[email protected]> wrote: > Hello, I've just reviewed the thread from earlier this year regarding low > noise power supplies and some related information about the noise levels of > certain batteries. Has anyone ever come across any data pertaining to the > noise levels of common gelled lead acid storage batteries ?
Have you come across the volt-nuts list? https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts I see a bizzare review of an HP 3457A meter on utube http://www.youtube.com/watch?v=HfxpJCdgVwc where the guy determines the noise level of the 6.5/7.5 digit meter by measuring the voltage of what he describes as a "general purpose lab power supply". Is it me, or is it a bit dumb to try to "measure" the noise level of a laboratory multimeter by using a general purpose lab power supply. I must admit, I thought that using a battery would have been stable at least short term, but it seems there is noise on a battery - something I was not aware of until today. Dave _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
