Ok i took an older telephone took off the handset and coily cord. THen i spliced a 2.5mm jack onto the coily cord. Next i removed most of the innards of the headset and replaced the microphone with an small microphne type thing (i ripped it out of a furby), then i replaced the speaker with a small earbud type one. Then i tested it on only of my cordless phones at my house, the speaker output was a little quiet but fine. Now for the problem and real reason i made it the cellular phone. When i plug it in and having a conversation i cannot hear what the other people are saying at all, but they can hear me fine. Can anyone provide insight to why its doing this and also a solution to the problem
what specific transistor should i use? and amplifying the voltage would cause to common's voltage to be higher too, could that hurt the cellular telephone?
Cellular Phone handset
Posted - Aug 04 2003 : 2:03:50 PM
