µ[micro]electronics info

A weblog focused on interesting circuits, ideas, schematics and other information about microelectronics and microcontrollers.




Because I have not tested all electronic circuits mentioned on this pages, I cannot attest to their accuracy; therefore, I do not provide a warranty of any kind and cannot be held responsible in any manner.

My e-mail

My website

True Random Number Generator

True random number generator, generated by AVR-based hardware (not a computed pseudorandom numbers).

The numbers are generated by sampling a source of random noise. The noise comes from a PN junction biased into breakdown. The noise is amplified and turned into a random bit by a comparator. Bits are gathered up and sent out to a PC where they are buffered, ready for use. The AVR regulates the PN junction boost voltage to about 12V by adjusting the PWM duty cycle. The AVR also contains the comparator which produces the binary digits from the noise. A simple display is included in the circuit, which currently displays the mean average of all the numbers generated so far.

Random number generator

Powered by Drupal - Design by Artinet