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Bill Cox
2014-09-28 06:36:15 -04:00
parent 8d3cd4f04b
commit 8c403ed056
1 changed files with 15 additions and 2 deletions
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README.md
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@@ -97,7 +97,20 @@ There is also a [CMOS version described here](http://waywardgeek.net/RNG).
### Simulations
LTspice was used to simulate the small and fast variations.
LTspice was used to simulate the small and fast variations. Here are simulation waveforms
for the small verision:
![Simulation of small Infinite Noise Multiplier](infnoise_small/shortsim.png?raw=true "Small
Infinite Noise Multiplier")
![Simulation of small Infinite Noise Multiplier](infnoise_full/shortsim.png?raw=true "Small
Infinite Noise Multiplier")
And again for the fast version.
![Simulation of fast Infinite Noise Multiplier](infnoise_fast/shortsim.png?raw=true "Fast
Infinite Noise Multiplier")
![Simulation of fast Infinite Noise Multiplier](infnoise_full/shortsim.png?raw=true "Fast
Infinite Noise Multiplier")
### Design Analysis
@@ -118,7 +131,7 @@ every cycle. When the loop amplification is < 2X, the entropy per output bit is
but can be easily computed. If E is the entropy per bit, and A is the loop amplification,
then:
> E = log(A)/log(2)
E = log(A)/log(2)
This provides a simple way to calculate the entropy added to an entropy pool per bit.