Hi!
I'm making Telephone Line project with some components: HM9102 (dialer), TEA1062 (Microphone interfacing), LS1240A (Buzzer).
My problem is: I can't hear any signal from Microphone!
Could anybody have ideas...??? Pls help me!?! :idea:
Line --> Buzzer -->earphone.....ok!!!
Mic --> Line --> can't hear...!!! ERROR!
The condensor mic has a polarity. See wether it is connected the right way. Also see you get a voltage more than 2 volts at the + tive pin of the MIC. See the capacitor connected to the mic is OK. If this does'nt work, Please post the schematic here. We'll try to solve the problem. Hope this HELPS. Good luck.