Devices for manufacturing electrets, and electrets obtained...

Details Devices for manufacturing electrets, and electrets obtained... Devices for manufacturing electrets, and electrets obtained...

H - Electricity

01

G

H01G 13/00 (2006.01) H01G 7/02 (2006.01)

Patent

CA 2124294

To manufacture a thin sheet electret of small size having charge distributed in very uniform manner, even at its edges, use is made of a device comprising a grounded electrode (2) for supporting a dielectric (1) to be charged, means for generating ions (3) in the vicinity of the dielectric, a grid (4) extending parallel to the surface to be charged of the dielectric, at a small distance from said face, and raised to an electric potential different from ground potential and a conductive frame (7) that is insulated from the electrode and that is electrically connected to the grid, said frame surrounding the dielectric and forming a single block with the electrode.

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