Research help: Looking for ZN427 Schematic (Amiga)

[callimero]

Hi,

I am sorry to disturb this here :) I am looking for a specific schematic of a Ferranti ZN427 audio Digitizer I build for my Amiga 25 years ago (approx.). I am writing currently an article about it and need some more background.

It has a very primitive input stage, no OpAmp, just the ZN427 and a SN7414. I think I may had the instructions from an Amiga Magazin or a book. I found similar schematics in the 68000er magazin but not quite the exact one.

The digitizer is working on my A2000 (stuffed with all you could afford back in the days), a bit crackely. Not sure why.

I thought the devs may have collected some old schematics... Any hints are welcome!

Best, Carsten

[ascadol123]

Hi, I think you be after these two Amiga Magazine Links which have a build a sampler project. Mono and Stereo Modification using an analogue switch.

https://archive.org/details/cuamiga-magazine-039

https://archive.org/details/cuamiga-magazine-040

Kind Regards