Bin-Bin Pau-Pao

user Student

city Xavier University - Ateneo de Cagayan


  • Simple noise generator

  • Created: Jul 21, 2014

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Summary

In this circuit, the collector is not connected. The B-E junction of this transistor is biased at 12V, which is over the maximum VBE voltage from the datasheet. This does not destroy the transistor, but produces avalanche and tunneling conduction, which amounts to noise. A simple diode could have been used, but it would have required a much higher voltage, since diodes are designed to sustain high reverse voltages.

1 Comment


tarheel2k

What's the output power and frequency range of this noise source? What transistors (i.e., models) work best for Q1?

Posted: Jul 30, 2015


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