[time-nuts] sine to square wave circuits - performance data?

Bruce Griffiths bruce.griffiths at xtra.co.nz
Wed Oct 4 17:11:37 EDT 2017


Just avoid current flowing in the input protection circuitry.

Once the protection circuit is activated the jitter increases significantly.

Bruce

> 
>     On 05 October 2017 at 04:21 Mark Sims <holrum at hotmail.com> wrote:
> 
>     Wenzel says an HC device tends to work better than an AC device in squarer applications.
> 
>     My calibrator board has a place for the feedback resistor so that I can implement the second LPRO circuit (or add hysteresis to the squarer gate.
> 
>     ----------------
> 
>         > > 
> >         I find it interesting that a simple 74AC04 performs so well (given enough
> >         input power) compared to even an LT1016.
> > 
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