[sdiy] AA143 Germanium Diode

[JH.]

It's just a limiter / soft clipper. Any small Ge diode should work.

JH.


----- Original Message ----- 
From: "Seb Francis" <seb at burnit.co.uk>
To: "Synth DIY" <synth-diy at dropmix.xs4all.nl>
Sent: Wednesday, July 06, 2005 4:35 PM
Subject: [sdiy] AA143 Germanium Diode


> Hi,
>
> I'm 'compiling' a flanger design from a couple of different sources.
> One of the sources is Jürgen's Storm Tide flanger (thanks Jürgen!)
>
> But I've seen he uses 2 AA143 diodes and these seem to be difficult to
> obtain in UK.  They are at the bottom left of this schematic:
> http://home.debitel.net/user/jhaible/jh_storm_tide_3.pdf
> It looks to me like they are just providing a fixed voltage drop.
>
> The AA143 datasheet says these (Germanimum) diodes have a forward
> voltage drop of approx 0.3V at 2mA (up to max 0.5V at 15mA).  Can anyone
> recommend an alternative diode with similar characteristics?
>
> Thanks in advance,
> Seb
>
>
>