This circuit is from a Radio Electronics from October 1963. The transistor is a power transistor of the time, and two transformers are used. The input has 10k impedance and is powered by 12 V.
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...