I don&#x27;t know much about this stuff, but it looks like it&#x27;s a reverse-biased noise generator of some kind.<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Noise_generator" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Noise_generator</a><p><a href="http:&#x2F;&#x2F;holdenc.altervista.org&#x2F;avalanche&#x2F;" rel="nofollow">http:&#x2F;&#x2F;holdenc.altervista.org&#x2F;avalanche&#x2F;</a><p><a href="http:&#x2F;&#x2F;freenrg.info&#x2F;Physics&#x2F;Scalar_Vector_Pot_And_Rick_Andersen&#x2F;Rick_Andersen_Noisegen.htm" rel="nofollow">http:&#x2F;&#x2F;freenrg.info&#x2F;Physics&#x2F;Scalar_Vector_Pot_And_Rick_Ander...</a>