[sdiy] Uniformly distributed noise generator?

Steve Ridley spr at spridley.freeserve.co.uk
Tue Jun 11 01:29:59 CEST 2013

A "noisy sawtooth" or triangle circuit might meet your needs.

Take a sawtooth generator and modulate it hard with noise.

The Buchla 265 "Source of Uncertainty" and the Serge
Noise Generator are examples.

A quad opamp and a transistor plus a few passives...


> I was wondering if anyone has seen a noise circuit that is not
> gaussian (like normal noise circuits) but instead uniformly
> distributed.
> If you look at gaussian noise on a scope then it looks like a blurry
> line, which has the most intensity at 0V and becomes darker and darker
> as you move away from 0V.
> I'm looking for something that has exactly the same brightness from
> e.g. -5V to +5V.
> Cheers,
> D.
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