I tried to access the photos... got to an empty pub directory...
Cutouts in a circuit board around a reference chip are usually more to relieve mechanical stress from the chip package caused by the PC board expanding/contracting/warping. This stress can affect the refereence voltage more than you might expect. Malone does this on his little Xicor X6008C voltage reference boards. (BTW that chip has been discontinued). That is why I prefer his boards over the other one that is available on Ebay that does not cut out around the ref chip. If you can live with that, you can get a packaged 5V / 0.01% reference for $14.50 shipped... see Ebay item 250366551770... the guy that builds them is closing them out... and he ships worldwide. _________________________________________________________________ Windows Live™ Hotmail®…more than just e-mail. http://windowslive.com/howitworks?ocid=TXT_TAGLM_WL_t2_hm_justgotbetter_howitworks_012009 _______________________________________________ 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.
