On Tue, 29 May 2018 14:16:02 +0200
Edward Bartolo <edbarx@???> wrote:

> On 28/05/2018, dan pridgeon <d_pridge@???> wrote:
> > I hope you will publish your circuit and its description soon. I'd
> > like to study it. (a .png would work if you have a sketch of it.)
> > Thanks. Dan.
> >
>
> I am afraid there is nothing new to study. The input is fed to a
> differential pair powered by a constant current source using two
> resistors in series with a Zener diode connected from the midpoint
> between the resistors and ground (0 volt terminal).

Schematic please?

English is great for novels, but schematics are the way we communicate
about electronics.


SteveT

Steve Litt
June 2018 featured book: Twenty Eight Tales of Troubleshooting
http://www.troubleshooters.com/28