This timer was found in English documentation from the 80's. The integrated circuit is common nowadays and the MOSFET admits equivalent according to the controlled load.
This interesting control circuit was found in an Electronics Now from 1988. Through it we can...
This circuit causes neon lamps to flash randomly from a low voltage supply (1.5 to 3 V). The...
Any operational amplifier, like the 741, can be used on this oscillator whose frequency depends on R1...