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Also see Infinite Noise TRNG https://github.com/waywardgeek/infnoise


Tried simulating this circuit in LTSpice and failed miserably. Anyone got a working circuit to share?

Given the feedback nature of the circuit I assume it's sensitive to all kinds of device-specific limitations like slew rate and so on, so hard to get a realistic simulation.


> Tried simulating this circuit in LTSpice and failed miserably

I have one somewhere, let me dig it out (it of course won't produce true randomness since it's a sim, but close enough to understand how the circuit works, which happens to be the closest I've seen to actual recursion in analog electronics).

Here: https://github.com/threeTB1rao/infrng-ltspice


Awesome, thanks!




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