[sdiy] single 9 volt battery white noise source

[David G. Dixon]

> Reading thru the documentation for the Rainmaker seems that this would
> be the best solution. Is the following really the case?
> 
> quote" Common designs use invariably Zener diodes or reverse-biased
> transistors base-emitter junctions as white noise generators. The main
> snag of these circuits is that a supply of at least 12V is required,
> therefore a big battery pack or (more commonly) mains supply is used
> as power source."

Ray Wilson's Sound Lab uses the reverse-biased E-B junction method, on a 9V
supply, and it works just fine (presuming you choose a transistor which
actually makes noise!).