projectus.freehost7.com:UG and PG level projects,mini projects and many more here ...



 

 

 

Mobile Phone Headset Connector:

 

 

 

Mobile Headphone has got 4 pins:

Pin 1 : Right ear wire

Pin 2 : Left ear wire

Pin 3 : Mic wire

Pin 4 : Ground wire

Here, headphone is used as an input device for the circuit. Headphone connects the receiving mobile to the circuit.