[Cryptech Tech] Updated version of alpha board drawing and description available

[Fredrik Thulin]

On Thursday, March 26, 2015 12:40:34 AM Павел Шатов wrote:
> On 26.03.2015 1:19, Fredrik Thulin wrote:
> > On Wednesday, March 25, 2015 11:24:55 PM Павел Шатов wrote:
> > ...
> > 
> >> I want to clarify one thing regarding power supply. How is Fredrik's
> >> circuit powered now?
> > 
> > I've deferred the real power solution for the avalanche noise circuit
> > until
> > now. Provisionally, I've been using two cascaded LMC7660IM charge pumps to
> > get a total of 15v (-15v to be precise). This has plenty of noise in the
> > range of 125 mV. Old screenshot of this from my scope is attached (yellow
> > input A/C coupled).
> 
> Excuse me, I can't understand. What has plenty of noise? Charge pump
> output or noise circuit output?

The yellow signal is the charge pump output, A/C coupled at 50 mV division.

/Fredrik