Found in a 1964 Electronic Design, this circuit makes use of FETs of the time. These transistors can be replaced by modern general-purpose types. The input resistance is 30 M.
We found this circuit in an English publication in 1982, but it can still be easily assembled by...
This circuit was obtained in a 1967 General Electric documentation. It alternately fires two xenon...
This is a traditional flasher configuration with two neon lamps. The frequency is given by the 100 nF...