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  1. E

    Electrolytic Capacitor as Detector or LF Noise Source

    Are there any further comments or advice on using an electrolytic cap as a substitute for a reversed biased transistor? In particular with regard to the spectral "quality" of the noise.
  2. E

    Electrolytic Capacitor as Detector or LF Noise Source

    I assume you are referring to voltage or current op amp noise. Any idea how the frequency spectrum of this would differ in character from reverse biased junction noise of a single transistor? Narrower? Broader? "Tunable" with the cap? What I am thinking is that it might be an interesting...
  3. E

    Electrolytic Capacitor as Detector or LF Noise Source

    So what can we attribute this to? Any way to isolate the cause? I have used a variety of electro's in different settings. All exhibit the same type of behavior. I have found no way to influence it hands-off. But it does seem to change with capacitance value. From my observations, I have the...
  4. E

    Electrolytic Capacitor as Detector or LF Noise Source

    The attached circuit produces a sub audio frequency, non-repetitive complex waveform. It resembles noise processed through a low pass filter. Can anyone please tell me what exactly is being detected? In other words, the likely environmental (or other) source of the "signal" detected by the two...

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