EP 0616485 A1 19940921 - Electrostatic transducer.
Title (en)
Electrostatic transducer.
Title (de)
Elektrostatischer Wandler.
Title (fr)
Transducteur électrostatique.
Publication
Application
Priority
ZA 931840 A 19930316
Abstract (en)
An electrostatic driver (10) comprises an acoustically transparent first electrode (12) an acoustically transparent second electrode (14) spaced apart from the first electrode (12) to define a space between the first and the second electrodes (12 and 14). A charged diaphragm (18) is suspended in the space between the first and the second electrodes (12 and 14). The first and the second electrodes (12 and 14) are partially insulated to generate A.C. and D.C. electric fields dissimilar in strength and form in the said space in which the diaphragm (18) is suspended to optimize the forces moving the diaphragm (18).
IPC 1-7
IPC 8 full level
H04R 19/00 (2006.01)
CPC (source: EP)
H04R 19/00 (2013.01)
Citation (search report)
- [X] US 3892927 A 19750701 - LINDENBERG THEODORE
- [A] EP 0258912 A1 19880309 - PHILIPS NV [NL]
- [A] DE 3542458 A1 19860605 - GOERIKE RUDOLF
- [A] US 5054081 A 19911001 - WEST ROGER A [US]
- [A] US 4289936 A 19810915 - CIVITELLO JOHN P
Designated contracting state (EPC)
AT BE DE DK ES FR GB IT NL SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 94301868 A 19940316; ZA 942710 A 19940420