[sdiy] white noise from resistor?

Paul Perry pfperry at melbpc.org.au
Wed Nov 5 14:33:46 CET 2008


I'm looking for a simple white noise source.
The usual reverse breakdown transistor junction has a problem - first, you
need a fairly high voltage, and more importantly, level and quality varies
between transistors.
In these days of very low leakage & high input impedance op amps, could I
get by with just amplifying the thermal noise of a high value resistor?
I know some of the EEs here can set me straight on this one..

paul perry Melbourne Australia




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