[time-nuts] OT: New BVAs in the house

Azelio Boriani azelio.boriani at screen.it
Tue Oct 4 23:31:46 UTC 2011


Wow again,
while digging for more info about the MiniBVA I came across this paper from
Enrico Rubiola (and others)

http://www.femto-st.fr/~rubiola/pdf-articles/journal/2010rsi-Elisa.pdf

showing how a cyocooled oscillator can achieve 10E-15 frequency stability at
10GHz from 1s to 1000s.
In the Rubiola's website you can find the paper about the BVA (the dewar
type) with the over schematic: a PI regulator made from one op-amp.

On Wed, Oct 5, 2011 at 1:17 AM, Magnus Danielson <magnus at rubidium.dyndns.org
> wrote:

> On 05/10/11 00:21, paul swed wrote:
>
>> That is indeed strange. But at least someone knows if it oscillates to
>> call
>> you.
>>
>
> Could be that someone knows where a useful "electronics recycle station" is
> located. :)
>
> I'm happy that that stuff like this appears in my lap rather than being
> trashed.
>
> Cheers,
> Magnus
>
>
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