Years ago when I thought fiber might catch-on I grabbed some 62.5/120 plenum fiber at Boeing Surplus. I got as far as connecting a 10-base2 card to a fiber converter fishing out both ends of the fiber on the reel and terminating with 3M (?) hot-melt end. It worked nicely but 10 Mhz isn't straining fiber very much. The good thing about fiber is the low error rate; something around 1E-12. I just disposed of the converters a few days ago. Still have several Km of fiber and a few connectors. 10-baseT works just fine thru conduit buried between desktop (house) and shop. About 35 m.
Dave On 04/21/2017 01:53 AM, Erik Christiansen wrote: > On 20.04.17 14:51, Gene Heskett wrote: >> The led makers have now had 40+ years to design such a package, and I >> fail to understand why it has not happened. > Somewhere near the bottom of my junkbox is an envelope with a pair of > Siemens opto-link (real product name long forgotten) devices, which came > out around 35 years ago. They're small grey rectangles with through-hole > pins, and a fibre entry with ring-nut (like on a collet holder) on one > end. Dunno if they're still marketed, though. > > At Digi-key, this Broadcom offering looks just like one end: > > https://www.digikey.com/product-detail/en/broadcom-limited/SP000063858/516-2872-ND/2220931 > > But that would leave the rest of my coil of shielded twisted-pair (for > RS485) cable gathering dust. With 7v of permissible common-mode, and > differential transmission for noise immunity, what more is really > needed? RS485 transceivers are around $2 to $3 IIRC. (I saw some for 25c > today, but they were surplus stock of a now obsolete device.) > > Erik > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
