This circuit takes advantage of an LED that has the flasher built into the chip to control a second common LED so that it also flashes. The circuit is from an American publication and the transistor can be of any type of general use.

This circuit takes advantage of an LED that has the flasher built into the chip to control a second common LED so that it also flashes. The circuit is from an American publication and the transistor can be of any type of general use.