On 20 Dec 2014 21:18, "Joel Setton" <[email protected]> wrote: > > Jan, > > Thanks for a good summary f the pros/cons. Of course the LTZ1000 is much closer to the current state of the art, but the REF102 is far easier to use and to calibrate. I'm definitely not shooting for sub-ppm performance, if I can build anything that stays within (say) 20 ppm long-term, that would be more than adequate as a home standard. > > One thing I don't like about the LM199 and LTZ1000 is that although they are stable, they are sold uncalibrated. As a result, building a 10-V reference with either of them would require at least two very stable resistors, one of which must be selected within a range of several percent to get an accurate 10V output.
I suspect if you built something very stable using an LTZ1000, it would be possible to get one or more volt-nut with a 3458A or similar to measure it for you. You could even average the result from several volt nuts. Dave. _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
