Hello Ken,
you can also buy it here:
http://www.supracon.com/en/dc_josephson_voltage_standard.html
there is also a version with cyro cooler so no need to handle with
dangerous liquids.
With best regards
Andreas
Am 19.10.2016 um 22:56 schrieb Dr. David Kirkby (Kirkby Microwave Ltd):
On 19 October 2016 at 20:15, Ken Peek <[email protected]> wrote:
Well, I already have a 3458A,
OK, quite an expensive multimeter. Otuside my budget for something I don't
really need, but would like!
$400K is *WAY* out of my budget. I was looking more for
something on the surplus market-- or some "cast away" JJA that someone is
getting ready to throw into the dumpster-- something that nobody wants
anymore that I can get working on a _very_limited_ budget...
It might be worth mentioning how much money you are willing to spend on it,
as it may give people ideas about what could possibly be done yourself, and
what is just not going to be practical.
You may well find getting liquid helium impossible. Here in the UK it is
very difficult to get chemicals dangerous chemical if you are not on an
industrial site. I very much doubt British Oxygen Company (BOC) would
delivery liquid helium to my house.
Stage 1 would be to see what you would need in order to get the He
delivered. Without that you are not going to get anywhere, and I doubt you
will get that delivered unless you have vessels that have been properly
maintained.
I would imagine that just getting the stuff delivered would be next to
impossible without spending a lot of money, especially in the USA.
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