Noise Generator
Published in issue 316, December 2002
The noise generator proposed here operates according to the digital principle, in contrast with the more classical noise generator, which usually employs the noise voltage of a base/emitter junction to generate the signal. The big difference between the method used here and the classical analogue design is that we are not generating a real noise voltage but a collection of discrete frequencies.
Resistors:
R2 = 56kΩ
R3 = 2kΩ2
R4 = 3kΩ3
P1 = 5kΩ preset
Capacitors:
C1,C3,C4,C5 = 100nF
C2 = 820pF
C6 = 3nF9
Semiconductors:
T1,T2 = BC547
T3 = BC557
IC1 = 74HCT14
IC2,IC3 = 74HCT164
IC4 = 4077
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Click below to download a PDF copy of this article from Elektor magazine. Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.
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