AW: [sdiy] Newbie & Zener D equivalents

[mark verbos]

Nils Pipenbrinck wrote:

>
> Well, you will most likely not find a direct replacement for that diode.
> It's a zener specially made to make noise. Those are rare these days. (btw,
> I would be happy to hear that I'm wrong on this point. I've been looking for
> noise-diodes for a couple of month, but never found them).
>
> I'm not such an expert, but I think you should just buy some zeners and try
> them. I would start with a 5.1 or 5.6V diode (e.g. try and error method).

The Buchla 265 uses a 2n5233 zener, which is available from Mouser and works
quite well for noise.

>
>
> Also you can use a normal transistor and use the basis-emitter diode. The
> base-emitter diode of the 2N3904 NPN tranny for example behaves a little bit
> like a 6V zener. It's however very weak, and not designed to pass high
> currents. For your schemantic it's save to put it in, the 100K resistor will
> limit the current.
>
> Anyways, it's not a direct replacement for the Z1J, Whatever diode you put
> in there where the breakdown point is reached it will make noise, but it
> will never be the Z1J-noise.

--
mark verbos

"if you want something done right, build it yourself."

www.simple-answer.com

watch out for...
on my label SIMPLE ANSWER "Form is Emptiness" Simple Answer 006 out now,
distributed by Integrale, UK