Patent ID: 7545947

Claim:
A hearing aid comprising: a PCB (Printed Circuit Board) in which components of the hearing aid are automatically disposed and soldered; a faceplate for use in the hearing aid; and battery electrode terminals connecting two positive and negative electrodes at both sides of a battery chamber disposed at the center of the faceplate, wherein the PCB is connected with the internal surface of the hearing aid faceplate by an adhesive, wherein an amplifier, a front microphone, a rear microphone, and a receiver are soldered in turn onto the PCB by an elongate electric wire, respectively, wherein a memory diverting switch and the battery electrode terminals are soldered and connected onto corresponding circuit terminals of the PCB, respectively, wherein interface socket terminals between an external controller attached to the battery chamber and the amplifier are soldered and connected onto corresponding circuit terminals of the PCB by use of short electric wires, and wherein an interface electric wire is connected with an interface socket located in the battery chamber on the faceplate for digital interface with the external controller to ascertain whether or not the amplifier operates normally.