This 3-step circuit for generating digital signals was found in the November 1976 issue of Radio Electronics magazine. The maximum frequency depends on the flip flops.
This circuit was found in 1966 General Electric documentation. The circuit uses components from the era...
We found this circuit in a magazine 73 for radio amateurs from the 80's. The circuit makes use of an...
This circuit uses one of the first comercial transistor and is from a 1958’s magazine. Tone...