I'm being Devil's Advocate here because I certainly realise switchers do generate high frequency noise. But wasn't the intention of them to make filtering easier, with smaller filter components, exactly because they operate at higher frequencies ?
So why do they fail ? Is it cost-cutting to make them only just good enough for typical uses ? Shouldn't it be possible to make the best possible supply from a switcher, if only cost and weight weren't the first considerations ? On Wed, Aug 31, 2016 at 9:45 PM, Mark Sims <hol...@hotmail.com> wrote: > Yes, at times I used a two stage linear regulator. The first stage had > excellent low freq rejection and the final stage too care of the high freq > stuff. > > Some times a full linear supply is not a viable option due to power > dissipation/size issues or the utter convenience of using a switching wall > wart. > > -------------------- > > > Precisely the reason to avoid switchers entirely and use linear-only > voltage regulators to power noise-sensitive circuits. As I mentioned > before, I had to use two stages of well-designed linear regulation to > make any switching supply acceptable (at a time-nuts level) for use with > a Tbolt. > _______________________________________________ > 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. > _______________________________________________ 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.
