[time-nuts] Fury Interface Board: 5MHz needed?

Magnus Danielson magnus at rubidium.dyndns.org
Wed Nov 7 20:17:38 EST 2007

From: Bruce Griffiths <bruce.griffiths at xtra.co.nz>
Subject: Re: [time-nuts] Fury Interface Board: 5MHz needed?
Date: Thu, 08 Nov 2007 14:06:50 +1300
Message-ID: <4732612A.9060703 at xtra.co.nz>


> Magnus Danielson wrote:
> > It isn't the same but if you think of it, the only real solution would be to
> > have a diffrential EFC input. But then again, you can't win them all, and the
> > relevance may be very low except for a few odd cases.
> >
> >   
> The HP10543A OCXO EFC connections were isolated from the rest of the
> circuit which had a single ground pin.
> The anode and cathode of the diode were connected via resistors to 2
> isolated pins.

Such an arrangement would allow the diode to be put into a feedback loop of an
op-amp in virtual ground arrangement if a designer feel it is a better drive


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