Found in a 1969 documentation, this circuit is reset by a push button. The activation time is 100 us. The transistors are from the era.
This circuit with transistors was found in an old Japanese publication, translation of an American...
This 8 W amplifier with germanium transistors was found in a Japanese documentation from 1967. The...
This circuit of the 80's makes use of components of the time. The circuit is from an American...