Abstract:
In a system and method for open fitting hearing aid frequency response sound measurements, a test space is provided having located therein a sound source, a hearing aid with a microphone, and an open fit receiver. An acoustic shield is provided and within the acoustic shield an ear simulator coupler is provided having an ear extension attached thereto, the ear extension having mounted thereto at least a portion of the open fit receiver. A measurement unit receives sound signals from the ear simulator coupler.
Abstract:
A power semiconductor module, for placement on a cooling component. The module includes a substrate, at least two power semiconductor components arranged on the substrate, a housing and outwardly routed load and control connections. The substrate has an insulator body with a first main area that faces the interior of the power semiconductor module, and has interconnects at load potential arranged thereon. Each load connection is formed as a shaped metal body with outer contacts, a strip-like section and with inner contacts extending from the strip-like section to the substrate and making circuit-compliant contact therewith. In addition, the load connections are substantially completely encased by insulation except in the vicinity of the outer and inner contacts and accordingly are electrically insulated from one another.
Abstract:
An arrangement with an associated production method, of a power semiconductor module in a pressure contact embodiment and a cooling component. The module includes load terminals embodied as metal molded bodies with a flat portion and a contact device originating at the flat portion, disposed within a housing. Each flat portion is disposed parallel to, and spaced from, the surface of the substrate. Contact feet extend from the flat portions to conductor tracks on the substrate. A pressure plate exerts pressure on the load terminals to hold them in place and establish electrical contact between the contact feet and the conductor tracks, while also establishing thermal contact between the load terminals and the cooling component. The cooling component, the housing, and the pressure plate form a first unit, which is mechanically decoupled from a second unit comprising the substrate and the load terminals.
Abstract:
In order to protect a microphone from moisture and/or dirt, there is provided a microphone protective device that needs only relatively little space for installation into an electroacoustic device for a relatively large effective surface area. For this purpose, the novel microphone protective device has an at least partially cylindrical-shell-shaped membrane, for preventing dirt and/or moisture from entering a sound inlet opening of the microphone.
Abstract:
A tool is provided with which a receiver of a hearing aid can be easily fitted into an earpiece or an ear mold and removed therefrom. The tool has an elongate main body, a first tool part for removing the receiver from a first earpiece, a second tool part for removing the receiver from a second earpiece, and a third tool part for fitting the receiver into the first or second earpiece. The elongate main body is divided into a first subsidiary body and a second subsidiary body). The two subsidiary bodies can be plugged at least partially one inside the other in the direction of the longitudinal axis of the main body. In addition, two of the three tool parts are arranged on one of the two subsidiary bodies, and the remaining tool part is arranged on the other of the two subsidiary bodies.
Abstract:
A housing for a power semiconductor module in which load-connecting elements having contact devices are arranged. The contact devices are arranged in housing troughs on the exterior of the housing. The housing troughs are formed at an associated lateral wall of the housing. The housing is closed off by a cover. The housing is preferably formed as a unitary piece of material having a circumferential sealing frame and the cover includes an outer rim that extends over the circumferential sealing frame, to prevent the penetration of fluid or moisture into the power semiconductor module when the cover is closed. On its inner rim, each housing trough includes a sealing rib formed of a section of the sealing frame. The associated load-connecting element is crimped about the sealing rib, so that the contact device is disposed within the trough.
Abstract:
A hearing apparatus and in particular a hearing aid are to be optimized as regards the risk of feedback. The hearing apparatus contains a housing, having a first opening and a second opening, and with a frame, in or on which a signal processing component is attached, and which can be inserted into the first opening of the housing as far as an end position. A ramp is disposed in the housing which interacts with the frame such that the frame is also moved perpendicular to the direction of insertion toward the second opening during insertion into the housing along a direction of insertion only in one section as far as the end position, which is less than 30% of the insertion path from the first opening to the end position.
Abstract:
A tool is provided with which a receiver of a hearing aid can be easily fitted into an earpiece or an ear mold and removed therefrom. The tool has an elongate main body, a first tool part for removing the receiver from a first earpiece, a second tool part for removing the receiver from a second earpiece, and a third tool part for fitting the receiver into the first or second earpiece. The elongate main body is divided into a first subsidiary body and a second subsidiary body). The two subsidiary bodies can be plugged at least partially one inside the other in the direction of the longitudinal axis of the main body. In addition, two of the three tool parts are arranged on one of the two subsidiary bodies, and the remaining tool part is arranged on the other of the two subsidiary bodies.
Abstract:
A power semiconductor module having a housing, a pressure member, a substrate including at least one contact surface, and at least one connection element leading towards the exterior of the housing. The connection element has a first contact device, a resilient section and a second contact device. The pressure member has two stop elements. The first contact device is electrically conductively connected to the contact surfaces of the substrate. The second contact device is arcuate in shape and has at least one deformation at the beginning and at the end of the arc, wherein, as a result of the deformations of the second contact device co-operating with the two stop elements of the pressure member, the connection element is prestressed.
Abstract:
A housing for a power semiconductor module in which load-connecting elements having contact devices are arranged. The contact devices are arranged in housing troughs on the exterior of the housing. The housing troughs are formed at an associated lateral wall of the housing. The housing is closed off by a cover. The housing is preferably formed as a unitary piece of material having a circumferential sealing frame and the cover includes an outer rim that extends over the circumferential sealing frame, to prevent the penetration of fluid or moisture into the power semiconductor module when the cover is closed. On its inner rim, each housing trough includes a sealing rib formed of a section of the sealing frame. The associated load-connecting element is crimped about the sealing rib, so that the contact device is disposed within the trough.