[time-nuts] Restoring GR 1120-AB Frequency Standard

[Max Robinson]

Well, I won't cross that bridge until I am forced to.

Regards.

Max.  K 4 O D S.

Email: max at maxsmusicplace.com

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----- 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
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