H - Electricity – 04 – R
Patent
H - Electricity
04
R
179/30, 349/76
H04R 11/00 (2006.01) H04R 11/12 (2006.01)
Patent
CA 1151557
ABSTRACT OF THE DISCLOSURE Disclosed is an electromagnetic transducer for converting mechanical or recorded acoustic events into alternating voltages, particularly for tracing stereo signals recorded on plate shaped supports which comprises a substantially cylindrical permanent magnet which is readily magnetized dis- posed around four pole rods each of which has a coil winding therearound whose axes are arranged substantially at corner points of a square in a plane perpendicular to the axes of the rods. A pickup stylus has a soft iron element which is driven by the stylus which is disposed adjacent one end of the pole rods and it is mounted for swinging movement about its center point located on the central axis of the transducer system. The soft iron element is di- rectly included in the magnetic circuit at one end of the permanent magnet.
351834
Fidi Werner
Pribyl Richard
Akg Akustische U. Kino-Gerate Gesellschaft M.b.h.
Fetherstonhaugh & Co.
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