This circuit was found in a Japanese publication from the 1960s. It uses germanium transistors and is powered by a voltage of 22.5 V. The circuit includes the erasure oscillator.
This circuit was found in a 1967 General Electric documentation. The components are from that...
This project was obtained in a 1982 documentation. The board consists of a labyrinth with trails...
Found in a publication from the 50's, this circuit uses a germanium transistor of the time. The...