I did read about this once but with smaller batteries. I think the noise is mostly equal the internal resistance of the battery. So an AA cell might be noisy but a 100AH might have a lot less internal resistance.
I have this page bookmarked. My application is audio recording studio equipment, they car a lot about noise too. regulators_noise4_e.html<http://www.tnt-audio.com/clinica/regulators_noise4_e.html> On Mon, Jul 8, 2013 at 8:52 PM, Mark Spencer <mspencer12...@yahoo.ca> 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 ? > > I recently discovered the HP bench supply I've been powering one of my > OCXO's from is slightly affected by AC line transients, so I've been > running one of my OCXO's from a bank of 100 amp hour gelled lead acid > batteries. Apart from the lack of glitches due to line transients, the > performance of the OCXO appears to be better. Before I embark on a quest > for a very low noise power supply (or contemplate building one) I'd be > curious in knowing roughly what the typical noise specs for the batteries > are. > > I did find some comments on an audiophile forum that indicated that gel > cell batteries are not known for low noise levels (: > > Best regards Mark Spencer > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > -- Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.