[time-nuts] any way to bootstrap a frequency standard into a voltage or resistance standard?

[Chuck Harris]

If I recall correctly, a Josephson Junction is the critter
you are looking for.  Put one at liquid nitrogen temperatures,
feed it with a precise microwave frequency, and it will produce
a known voltage.  Typically, JJ's are strung together to produce
1, or 10 volts.  The US standard volt is defined in terms of a
JJ excited by a particular frequency.

Now what we need is a TAPR priced JJ array.

-Chuck Harris

Scott Burris wrote:
> Now that many of us have a nice 10Mhz reference courtesy of TAPR,
> I was wondering if there was any way to use that to build a precise
> voltage or resistance standard?
> 
> I've got once of those high precision standard resistors with a sticker
> on it noting the actual measured resistance.  Is it still accurate?  Who 
> knows?
> 
> As well, I have a +5v reference that uses an Analog Devices precision
> reference chip as its source.  I have more faith that this reference is
> correct within the tolerances specified in the datasheet.
> 
> Now if I could somehow take that frequency reference and derive a 
> voltage standard or the like, I'd be in business.  But I can't think
> of a way that wouldn't require calibration of some sort, and if I had
> the means to calibrate, I wouldn't need the standard in the first place.
> 
> Any voltage-nuts or resistance-nuts out there?
> 
> Scott
> 
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
>