Hearing and output transducer with self contained amplifier

Abstract

An integrated hearing aid receiver is disclosed. The receiver comprises a housing having first and second outlet ports. Disposed within the housing is a diaphragm defining an output chamber and a motor chamber. An armature is disposed within the motor chamber, and has an operative element comprising a fixed end and a movable end. The armature operative element is coupled by a link to drive the diaphragm. A permanent magnet structure having a central passage therein surrounds the movable end of the armature and provides a magnetic field within the passage. A drive oil is disposed about the armature and is located proximate to the permanent magnetic structure. An amplifier is disposed within the motor chamber and between the armature and the diaphragm. Lead attachment between relatively fragile amplifier output leads and drive coil leads 66 is achieved by disposing the drive coil leads to extend from a base portion of the drive coil upwardly about its peripheral surface and having their end portions extending at an angle towards the amplifier. The amplifier leads are brought upward from the interior of the housing and into contact with the drive coil leads. Associated lead pairs are welded together, after which the drive coil leads are folded towards the amplifier and downward, thereby minimizing tensile stress in the amplifier leads.