| 摘要 |
The invention provides a magnetic yoke used for a moving-iron microphone/transducer comprising soft magnet in shape of a frame having an inner through hole. The soft magnet has two end surfaces from one of which to the other extends the inner through hole and an outer peripheral surface which extends around the inner through hole. The soft magnet is one-piece configured. The invention also provides a method for manufacturing the above magnetic yoke comprising drawing a soft magnetic material adapted for manufacture of the magnetic yoke to form a soft magnetic tube with an inner through hole by adopting drawing process for metal tube; and cutting the soft magnetic tube along a direction perpendicular to a length direction of the inner through hole in terms of a desired size of the magnetic yoke, to obtain the soft magnet of the magnetic yoke. As compared with the conventional magnetic yokes, the magnetic yoke of the invention has simpler structure and lower manufacturing cost. The magnetic circuit is greatly improved due to a novel manufacturing process. Additionally, the magnetic yoke can be made in various shapes and thus can be used in many occasions. Thus the invention has good application prospect. |
