This is the circuit for the HM-10ª, an instrument sold by Heathkit. The circuit is from a Radio Electronics from May 1963. The indication is by an analog instrument.
This electronic roulette circuit with 10 numbers was found in a Popular Electronics from the 80s....
Found in an old Popular Electronics this circuit appears in other variations on this site and in...
This circuit was taken from an article in Electronics Now magazine in February 1995. The power...