This Nixie pipe circuit was found in 1965 documentation. Note the high supply voltage. Appropriate transistors of the time were used.
This traditional signal injector from a 1970s publication uses germanium transistors. We can mount it...
This circuit was found in a 1967 American documentation. The circuit uses components of the time,...
Found in a 1964 Electronic Design this circuit compares two signals by providing the inverse of the...