I have made this simple circuit: [![enter image description here][1]][1] [![Picture of circuit][2]][2] In response to a rapidly changing magnetic field (pulse), the LED blinks. An example of the pulse is shown below: [![Picture of scope][3]][3] Now I would like to have a circuit with 2 LEDs so that only one of the LEDs blinks in response to a pulse like the one shown on the picture above and only the other LED blinks in response to a pulse of the reverse polarity - i.e. as the pulse above, but with the polarity flipped, so it first go positive, then negative and then positive again. Is it possible using only a few more simple components? That is, not adding something like a microcontroller and an external power supply. [1]: https://i.sstatic.net/gndhf.png [2]: https://i.sstatic.net/lsnxj.jpg [3]: https://i.sstatic.net/r54GV.jpg