Hi, I have already offered a schematic in the PICLIST. It uses an obsolete Ge-transistor, which b-e junction is noisy and can be amplified. Regards, Imre +-----------------------------------------------------------------------+ | The information transmitted is intended only for the person or entity | | to which it is addressed and may contain confidential and/or | | privileged material. Any review, retransmission, dissemination or | | other use of, or taking of any action in reliance upon, this | | information by persons or entities other than the intended recipient | | is prohibited. If you received this in error, please contact the | | sender and delete the material from any computer. | +-----------------------------------------------------------------------+ On Mon, 22 Oct 2001, Michael Vinson wrote: > Vasile Surducan wrote: > >[about generating random noise] > > Why with a PIC ? There are many simplest methods to generate white or > >pink ( zenner based) noises which are randomly. > > Could you please elaborate, Vasile? (Details or links to details, > whatever you want). I was recently reading something by some > nuts who have set up a network of random number generators around > the world to detect "tremors in The Force", or something. They > use random bit generators based on physical (not numerical) noise, > like thermal resistor (Johnson) noise. I looked on their website > (which I'll provide if anyone is interested, I don't have it handy > right now), but although there was lots of pseudo-scientific > mish-mash, there was nothing as concrete as a schematic. So, to > broaden the question a bit, can anyone provide details for a > simple random-bit generator that works from a physical (not > computational) source? I'm interested in playing around with > such a thing (I have a lot of experience with stochastic time- > series analysis). Thanks! > > Michael > > Thank you for reading my little posting. > > > _________________________________________________________________ > Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body > > > -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads