Sell Skin Touch-controlled Piezoelectric Microphone

A skin touch-controlled piezoelectric micro- phone which includes a housing having a thin bottom side that admits vibrating waves from the user's skin when the user talks, a metal base plate mounted in the housing and having a negative signal electrode contact, a signal metal plate mounted in the housing and having a positive signal electrode contact, two ceramic plates sandwiched in between the metal base plate and the signal metal plate, a PC board mounted on the metal base plate and having a negative signal electrode contact and positive signal electrode contact respectively connected to the negative signal electrode contact of the signal metal base plate for converting the collected voice signal into an electric signal, and a signal line connected to the PC board for output of the electric signal.