We found this circuit in an American documentation from the 90's. The circuit makes use of general purpose NPN transistors. The 0.005 uF (5nF) capacitors determine the frequency.
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...