[time-nuts] Restoring GR 1120-AB Frequency Standard
Max Robinson
max at maxsmusicplace.com
Sat Aug 23 03:01:18 UTC 2008
Well, I won't cross that bridge until I am forced to.
Regards.
Max. K 4 O D S.
Email: max at maxsmusicplace.com
Transistor site http://www.funwithtransistors.net
Vacuum tube site: http://www.funwithtubes.net
Music site: http://www.maxsmusicplace.com
To subscribe to the fun with tubes group send an email to,
funwithtubes-subscribe at yahoogroups.com
----- Original Message -----
From: "Bruce Griffiths" <bruce.griffiths at xtra.co.nz>
To: "Discussion of precise time and frequency measurement"
<time-nuts at febo.com>
Sent: Friday, August 22, 2008 12:28 AM
Subject: Re: [time-nuts] Restoring GR 1120-AB Frequency Standard
> Max
>
> A capacitance bridge using a transformer would be a lot more stable than
> merely using the capacitance to vary the frequency of an LC oscillator.
>
> The advantage of a capacitive sensing technique over a light beam is that
> it has much simpler and potentially more stable mechanical system than
> when a the mercury colum interrupts a light beam. Unless of course on has
> the Mercury column move a moire grating or similar setup such as making
> the top of the mercury column a reflector in an interferometer system.
>
> Bruce
> _______________________________________________
> 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.
>
>
More information about the Time-nuts_lists.febo.com
mailing list