Found in a 1968 EEE, this circuit uses transistors from that time. The output is 300 ns. Transistors can be replaced with modern equivalents.
Found on Popular Electronics from the 1990s, this oscillator uses a general purpose transistor. The...
In the original 1992 application, this passive circuit was intended for use in the car. At that...
We find this vibrato configuration with transistors in a 1987 documentation. The components are still...