ELECTROMAGNETIC DEVICE AND HIGH-VOLTAGE GENERATING DEVICE AND METHOD OF PRODUCING ELECTROMAGNETIC DEVICE

摘要

An electromagnetic device and a high-voltage generating device which are thin and improved in the characteristics are provided in which a magnetic core 3 is made of a cylindrical form of a ferrite material having a higher intrinsic resistance. A winding is provided by winding a flat rectangular wire conductor 2 in an edge-wise winding form directly on substantially the entire length of the magnetic core 3 . As any insulator such as a coil bobbin is not needed between the flat rectangular wire conductor 2 and the magnetic core 3 , the winding can be decreased in the overall size or thickness thus contributing to the dimensional reduction of the electromagnetic device. Also, as its flat rectangular wire conductor 2 is wound directly on the magnetic core 3 , the winding can be minimized in the length and thus the overall resistance. Moreover, as there is no gap between the winding and the magnetic core 3 , the self-inductance can be reduced while the size and the number of turns of the winding remain unchanged.