At Farnell, they're listed under Power Supplies rather than Switching Regulators (which is a subdivision of Semiconductors).
It makes sense since one is a board product and the other a chip, but when the board product is a drop-in replacement for a TO220, less sense! On Sun, Dec 4, 2016 at 7:44 PM, John Ackermann N8UR <j...@febo.com> wrote: > And Digikey does stock the Murata part, for about $4.30. Why I couldn't > find it when searching their site for switching regulators, I don't know. > > John > ---- > > > On 12/04/2016 02:39 PM, John Ackermann N8UR wrote: > >> Thanks for that pointer! When I searched Digikey, I wasn't able to find >> anything that was in the 3-lead TO-220 case. I will definitely check >> out the Murata units, as I suspect they perform better than this one. >> >> John >> ---- >> On 12/04/2016 02:01 PM, Adrian Godwin wrote: >> >>> Thanks for this. I've seen something similar from Murata : >>> >>> http://uk.farnell.com/murata-power-solutions/oki-78sr-5-1-5- >>> w36-c/converter-dc-dc-1-o-p-7-5w-1-5a/dp/2102101 >>> >>> >>> Since they're a mainstream supplier of inductors they may have managed >>> better performance - it would be interesting to compare. >>> >>> >>> On Sun, Dec 4, 2016 at 6:50 PM, John Ackermann N8UR <j...@febo.com> >>> wrote: >>> >>> I found a cute little switching regulator that's a drop-in >>>> replacement for >>>> an LM7805: http://www.ebay.com/itm/261243604047 >>>> >>>> I got a couple to play with, mainly to see how bad the noise would be. >>>> Here are spectrum analyzer and PN shots comparing a cheap surplus >>>> OCXO when >>>> driven by a regular 7805 and by the switching replacement. >>>> >>>> The switching frequency is supposed to be 2 MHz but you can see that >>>> it's >>>> more like 2.4 MHz. Whether this performance is sufficient for any >>>> application is up to you. It sure runs a lot cooler than a 7805, >>>> though! >>>> >>>> John >>>> >>>> >>>> >>>> >>>> _______________________________________________ >>>> 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. >>> >>> _______________________________________________ >> 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/m > ailman/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.