how can I ,using properly a pc sound file(3,5mm electrical signal coming from the pc) with 2 diferent frecuencies connect 2 diferent circuits,once the signal reach some frecuencie levels like 2khz ...and is switched a circuit#1....once is the other frecuencie like 4khz..the other circuit#2,as long as the frecuencies are playing their roles,the circuits are connected,the electrical signal coming from the 3,5mm pc switch
maybe with a micro-rele serie 117-1-a-52/d ,or transistor based?does anyone know exactly the way it can be done
maybe with a micro-rele serie 117-1-a-52/d ,or transistor based?does anyone know exactly the way it can be done