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.
The resistor Re determines the current in the LED and can be changed. The circuit is from a 1978...
Motors up to 2 A DC can be controlled by this circuit that we find in the manual for linear...
This type of logic is no longer used today. The circuit is from an old American publication and...