[sdiy] Well...it's only NON willful infringement

[Peter Grenader]

Had a chance to sweep a TBK schemo today and it's remarkably simular to what
I did in mine...almost exact in theory,  but i used different counters and
handled the random directional control differently.

Does anyone here have a TBK?  I am curious as to how the random operates.
There's a pulse input... it's turning on a switch.  Does that enable the
random -or- does that step the random?  Can't see that it would do that.
mine works on a different theory altogether.  The main trigger into the
sequence is what's turning on the latches which are gating the random (read:
150 Khz binary counted non-random) numbers into the main counters presets.
The preset enable is used to effect the main counter withthe output of the
latches.  I'm not sure how Serge did his, as some of his applications are
funky here.  For instance, he uses the preset enable in of the 4516 as a
reset and has the reset pin tied to ground.  Don't get that, but I'm sure it
has to do with the way he's generating his quasi-random numbers.

Can anyone shed some light on this for me?

thanks,

Payder