EP 1343353 A1 20030910 - A capacitive transducer
Title (en)
A capacitive transducer
Title (de)
Kapazitiver Wandler
Title (fr)
Transducteur capacitif
Publication
Application
Priority
- DK PA200001567 A 20001020
- EP 01978227 A 20011019
- US 24567200 P 20001106
Abstract (en)
A capacitive transducer, in particular a condenser microphone, with a ring-shaped member (12) and a diaphragm (11) secured to the ring-shaped member (12). A disc-shaped member (17) is secured in the opening of the ring-shaped member (12) and in parallel relationship to the diaphragm (11). The disc-shaped member (17) has an electrically conductive portion (19) spaced from the ring-shaped member (12) and facing the diaphragm (11) in a predetermined distance therefrom, whereby the diaphragm (11) and the electrically conductive portion (19) on the disc-shaped member (17) form an electrical capacitor. The second side of the disc-shaped member (17) and the contact member are directly accessible. Also, the ring-shaped member (12) has, outside the outer periphery of the diaphragm (11), a free surface (14) extending transversally to the axis of the ring-shaped member (12) for mounting in a microphone housing with the diaphragm flush with the front end of the microphone or slightly recessed relative to the front end. <IMAGE>
IPC 1-7
IPC 8 full level
H04R 19/04 (2006.01)
CPC (source: EP)
H04R 19/04 (2013.01)
Citation (search report)
- [A] US 5854846 A 19981229 - BEAVERS BOB RAY [US]
- [A] US 3588382 A 19710628 - REEDYK CORNELIS W
- [A] US 3991285 A 19761109 - VAN DEN WORM FREDDY EDDY, et al
- [DA] GB 2112605 A 19830720 - BRUEEL & KJAER AS
Designated contracting state (EPC)
DE DK FR GB
DOCDB simple family (publication)
EP 1343353 A1 20030910; EP 1343353 B1 20041215; DK 1329129 T3 20050425; DK 1343353 T3 20050425
DOCDB simple family (application)
EP 03076316 A 20011019; DK 01978227 T 20011019; DK 03076316 T 20011019