[time-nuts] DMTD was: high rev isolation amps

Attila Kinali attila at kinali.ch
Thu May 12 04:19:05 EDT 2016


On Thu, 12 May 2016 05:51:50 +0000 (UTC)
Bruce Griffiths <bruce.griffiths at xtra.co.nz> wrote:

> The input noise of a 125 series gate will be far larger than the noise at the 
> mixer output at the beat frequency. A 125 may be useful as the output stage 
> of a Collins style limiter chain wherein which the gain and bandwidth of each 
> successive stage increases in a way that ensures that the output slew rate 
> increases whilst minimising the output jitter due to amplified noise..

For those wondering what a Collins style limiter is, see [1] (sorry,
I couldn't find a non-paywall version). Bruce page on limiters [2] contains
also a lot of information. The discussion[3] on the Collins limiter 4 years
ago might also be worth a look.


			Attila Kinali

[1] "The Design of Low Jitter Hard Limiters", by Oliver Collins, 1996
http://dx.doi.org/10.1109/26.494304

[2] http://www.ko4bb.com/~bruce/ZeroCrossingDetectors.html

[3] https://www.febo.com/pipermail/time-nuts/2012-August/069441.html

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It is upon moral qualities that a society is ultimately founded. All 
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use without that foundation.
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