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Built 3rd board

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Bill Cox
2014-10-26 23:37:39 -04:00
parent 1e78a42a97
commit 085d050ce6
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README.md
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@@ -15,11 +15,11 @@ estimation of bits added to an entropy pool.
### The Eagle open-source boards work!
Here's the first three boards from OSH Park. This is the V1 version, which works
_exactly_ as predicted. The top board I do not plan to assemble. The middle was my first
assembly, which required a bit of rework. The bottom was my second board, which came out
right the first time. Both boards should produce 0.864 bits of entropy per bit. The
first one is estimated to produce 0.867, while the second one produces 0.868. That's
only an error vs design of 0.5%!
_exactly_ as predicted. All three work, and all work conform closely to the INM model
predictions. All three boards should produce 0.864 bits of entropy per bit. The first
one is estimated to produce 0.867, while the second one produces 0.868, and the third is
0.867. That's only an error vs design of 0.5%! Not bad given that I used 5% resistors to
set the gain.
![Picture of Infinite Noise Multiplier circuit board](images/INM_V1.jpg?raw=true "Infinite Noise Multiplier")

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