EP 0835041 A1 19980408 - Electric hearing aid with protection device against electromagnetic radiation
Title (en)
Electric hearing aid with protection device against electromagnetic radiation
Title (de)
Elektrisches Hörhilfegerät mit Schutzeinrichtung gegen elektromagnetische Strahlung
Title (fr)
Prothèse auditive électrique avec dispositif de protection contre la radiation électromagnétique
Publication
Application
Priority
EP 96115851 A 19961002
Abstract (en)
The device includes a casing (1) with an integrated amplifier circuit (3) which comprises at least one microphone (2), a switch- and/or connection devices (8, 9), two filter devices (7), an amplifier device (6) and a voltage source (5). The amplifier circuit is connected to a loudspeaker (4), and has a protection arrangement against the effect of high-frequency signals. The integrated amplifier circuit is protected against performance-related HF currents by several filter elements (11-15), which are passive filters of first or higher order. The filter elements are provided in electric connections (20) to the amplifier circuit, directly on the integrated circuit (IC).
Abstract (de)
Zur Verbesserung der EMV-Festigkeit und zum besonderen Störschutz ist die integrierte Verstärker- und Übertragungsschaltung (3) des Hörhilfegerätes durch Filterelemente (11-15) gegen leitungsgebundene HF-Störströme geschützt, wobei die Filterelemente in elektrischen Anschlüssen (20) der Verstärkerschaltung und unmittelbar am integrierten Schaltkreis vorgesehen sind. <IMAGE>
IPC 1-7
IPC 8 full level
H04R 25/00 (2006.01)
CPC (source: EP US)
H04R 25/505 (2013.01 - EP US); H04R 2225/49 (2013.01 - EP US)
Citation (search report)
- [EA] AT 401595 B 19961025 - VIENNATONE AG [AT] & AT 84695 B 19210711 - SZLOBODA ANDREAS
- [A] US 5182531 A 19930126 - FIELDLER GERHARD [DE], et al
- [A] US 4918591 A 19900417 - LINK WALTER [DE]
- [A] DE 4242097 A1 19940616 - BOSCH GMBH ROBERT [DE]
- [A] DE 29608215 U1 19960801 - SIEMENS AUDIOLOGISCHE TECHNIK [DE]
- [A] US 4250637 A 19810217 - SCOTT BRIAN L
- [AD] DE 4343703 C1 19950105 - SIEMENS AUDIOLOGISCHE TECHNIK [DE]
- [A] US 4993072 A 19910212 - MURPHY PRESTON V [CH]
Designated contracting state (EPC)
CH DE DK FR LI NL
DOCDB simple family (publication)
DOCDB simple family (application)
EP 96115851 A 19961002; US 91921097 A 19970828