This small project is intended to add the flashing lights to an "analog" powered train. This circuit is battery powered and does not need electric contact to the tracks. Other important feature is the magnetic switch (reed bulb) for circuit on/off: thanks to this component the user does not fit in the model the on/off switch and has only to modify the model for flashing leds positioning. The very compact dimensions allows the user to fit the circuit in a Z, N or HO scale model.
This circuit is a perfect replacement for old LM3909 based led flashers with the improved capability to asynchronously flash the two leds.