{"id":213931,"date":"2024-09-19T10:11:02","date_gmt":"2024-09-19T10:11:02","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/?p=213931"},"modified":"2024-09-19T10:11:02","modified_gmt":"2024-09-19T10:11:02","slug":"%e9%9b%bb%e5%ad%90%e5%9b%9e%e8%b7%af%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8b%e9%9b%bb%e7%a3%81%e5%b9%b2%e6%b8%89emi%e6%8a%91%e5%88%b6%e3%81%ab%e5%bd%b9%e7%ab%8b%e3%81%a4%e3%82%b3%e3%83%b3%e3%83%87","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ja\/%e9%9b%bb%e5%ad%90%e5%9b%9e%e8%b7%af%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8b%e9%9b%bb%e7%a3%81%e5%b9%b2%e6%b8%89emi%e6%8a%91%e5%88%b6%e3%81%ab%e5%bd%b9%e7%ab%8b%e3%81%a4%e3%82%b3%e3%83%b3%e3%83%87\/","title":{"rendered":"\u96fb\u5b50\u56de\u8def\u306b\u304a\u3051\u308b\u96fb\u78c1\u5e72\u6e09(EMI)\u6291\u5236\u306b\u5f79\u7acb\u3064\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u306e\u4ed5\u7d44\u307f"},"content":{"rendered":"

\u96fb\u5b50\u56de\u8def\u306b\u304a\u3051\u308b\u96fb\u78c1\u5e72\u6e09(EMI)\u6291\u5236\u306b\u5f79\u7acb\u3064\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u306e\u4ed5\u7d44\u307f\u3092\u89e3\u8aac\u3002EMI\u306e\u5f71\u97ff\u3092\u8efd\u6e1b\u3059\u308b\u305f\u3081\u306e\u57fa\u672c\u539f\u7406\u3084\u5b9f\u7528\u7684\u306a\u5bfe\u7b56\u65b9\u6cd5\u3092\u7d39\u4ecb\u3002<\/p>\n

\u96fb\u5b50\u56de\u8def\u306b\u304a\u3051\u308b\u96fb\u78c1\u5e72\u6e09(EMI)\u6291\u5236\u306b\u5f79\u7acb\u3064\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u306e\u4ed5\u7d44\u307f<\/h2>\n

\u96fb\u5b50\u6a5f\u5668\u304c\u5897\u3048\u308b\u306b\u3064\u308c\u3001\u96fb\u78c1\u5e72\u6e09(EMI: Electromagnetic Interference)\u306e\u554f\u984c\u306f\u307e\u3059\u307e\u3059\u91cd\u8981\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002EMI\u306f\u3001\u96fb\u5b50\u6a5f\u5668\u306e\u6b63\u5e38\u306a\u52d5\u4f5c\u3092\u59a8\u3052\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u5916\u90e8\u304b\u3089\u306e\u96fb\u78c1\u6ce2\u3084\u30ce\u30a4\u30ba\u304b\u3089\u767a\u751f\u3057\u307e\u3059\u3002\u3053\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u3001\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u304c\u591a\u304f\u306e\u96fb\u5b50\u56de\u8def\u3067\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f\u3001EMI\u6291\u5236\u306b\u304a\u3051\u308b\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u306e\u4ed5\u7d44\u307f\u3068\u305d\u306e\u5f79\u5272\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n

\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u306e\u57fa\u672c\u539f\u7406<\/h2>\n

\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u306f\u3001\u96fb\u8377\u3092\u4e00\u6642\u7684\u306b\u84c4\u3048\u308b\u5f79\u5272\u3092\u6301\u3064\u53d7\u52d5\u96fb\u5b50\u90e8\u54c1\u3067\u3059\u30022\u3064\u306e\u5c0e\u96fb\u6027\u30d7\u30ec\u30fc\u30c8\uff08\u96fb\u6975\uff09\u304c\u3001\u7d76\u7e01\u4f53\uff08\u8a98\u96fb\u4f53\uff09\u3092\u631f\u3093\u3060\u69cb\u9020\u306b\u306a\u3063\u3066\u304a\u308a\u3001\u3053\u306e\u30d7\u30ec\u30fc\u30c8\u9593\u306b\u96fb\u8377\u3092\u84c4\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u306e\u5bb9\u91cf(C)\u306f\u4ee5\u4e0b\u306e\u5f0f\u3067\u8868\u3055\u308c\u307e\u3059:<\/p>\n

C = \\frac{\\epsilon A}{d}<\/code><\/p>\n

\u3053\u3053\u3067\u3001<\/p>\n

<\/p>\n

  • C<\/b> \u306f\u5bb9\u91cf (Farad, F)\u3001<\/li>\n
  • \\epsilon<\/b> \u306f\u8a98\u96fb\u7387 (Farad per meter, F\/m)\u3001<\/li>\n
  • A<\/b> \u306f\u30d7\u30ec\u30fc\u30c8\u306e\u9762\u7a4d (\u5e73\u65b9\u30e1\u30fc\u30c8\u30eb, m\u00b2)\u3001<\/li>\n
  • d<\/b> \u306f\u30d7\u30ec\u30fc\u30c8\u9593\u306e\u8ddd\u96e2 (\u30e1\u30fc\u30c8\u30eb, m) \u3067\u3059\u3002<\/li>\n

    <\/u1><\/p>\n

    \u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u3068EMI\u6291\u5236<\/h2>\n

    \u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u306f\u3001EMI\u6291\u5236\u306b\u304a\u3044\u3066\u5927\u304d\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002\u96fb\u5b50\u56de\u8def\u5185\u306b\u767a\u751f\u3059\u308b\u30ce\u30a4\u30ba\u3084\u4e0d\u8981\u306a\u9ad8\u5468\u6ce2\u6210\u5206\u3092\u9664\u53bb\u307e\u305f\u306f\u4f4e\u6e1b\u3059\u308b\u305f\u3081\u306b\u4f7f\u308f\u308c\u307e\u3059\u3002\u3053\u306e\u305f\u3081\u306b\u306f\u3001\u7279\u5b9a\u306e\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059:<\/p>\n

    <\/p>\n

  • \u30c7\u30ab\u30c3\u30d7\u30ea\u30f3\u30b0\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc<\/b>: \u96fb\u6e90\u30e9\u30a4\u30f3\u306b\u63a5\u7d9a\u3055\u308c\u3001\u96fb\u6e90\u306e\u30ce\u30a4\u30ba\u3084\u63fa\u3089\u304e\u3092\u6291\u3048\u308b\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u96fb\u5b50\u56de\u8def\u304c\u5b89\u5b9a\u3057\u3066\u52d5\u4f5c\u3057\u307e\u3059\u3002<\/li>\n
  • \u30d0\u30a4\u30d1\u30b9\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc<\/b>: \u9ad8\u5468\u6ce2\u30ce\u30a4\u30ba\u3092\u30b0\u30e9\u30a6\u30f3\u30c9\u306b\u9003\u304c\u3059\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u4fe1\u53f7\u30e9\u30a4\u30f3\u304c\u30af\u30ea\u30fc\u30f3\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n
  • \u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc<\/b>: \u30d5\u30a3\u30eb\u30bf\u56de\u8def\u306e\u4e00\u90e8\u3068\u3057\u3066\u3001\u7279\u5b9a\u306e\u5468\u6ce2\u6570\u5e2f\u57df\u306e\u30ce\u30a4\u30ba\u3092\u30ab\u30c3\u30c8\u307e\u305f\u306f\u6e1b\u8870\u3055\u305b\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n

    <\/o1><\/p>\n

    \u306a\u305c\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u306f\u52b9\u679c\u7684\u306a\u306e\u304b?<\/h2>\n

    \u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u304cEMI\u6291\u5236\u306b\u52b9\u679c\u7684\u3067\u3042\u308b\u7406\u7531\u306f\u3001\u9ad8\u5468\u6ce2\u4fe1\u53f7\u306b\u5bfe\u3057\u3066\u4f4e\u3044\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3092\u6301\u3064\u305f\u3081\u3067\u3059\u3002\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9(Z)\u306f\u4ee5\u4e0b\u306e\u5f0f\u3067\u8868\u3055\u308c\u307e\u3059:<\/p>\n

    Z = \\frac{1}{j\\omega C}<\/code><\/p>\n

    \u3053\u3053\u3067\u3001<\/p>\n

    <\/p>\n

  • Z<\/b> \u306f\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9 (Ohm, \u03a9)\u3001<\/li>\n
  • j<\/b> \u306f\u865a\u6570\u5358\u4f4d (\u221a(-1))\u3001<\/li>\n
  • \\omega<\/b> \u306f\u89d2\u5468\u6ce2\u6570 (radian per second, rad\/s)\u3001<\/li>\n
  • C<\/b> \u306f\u5bb9\u91cf (Farad, F) \u3067\u3059\u3002<\/li>\n

    <\/u1><\/p>\n

    \u3053\u306e\u5f0f\u304b\u3089\u5206\u304b\u308b\u3088\u3046\u306b\u3001\u5468\u6ce2\u6570\u304c\u9ad8\u304f\u306a\u308b\u3068\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306f\u4f4e\u304f\u306a\u308a\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u9ad8\u5468\u6ce2\u30ce\u30a4\u30ba\u306f\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u3092\u901a\u904e\u3057\u3084\u3059\u304f\u306a\u308a\u3001\u7d50\u679c\u7684\u306b\u30ce\u30a4\u30ba\u304c\u30b0\u30e9\u30a6\u30f3\u30c9\u306b\u9003\u304c\u3055\u308c\u307e\u3059\u3002<\/p>\n

    \u307e\u3068\u3081<\/h2>\n

    EMI\u6291\u5236\u306b\u304a\u3051\u308b\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u306e\u91cd\u8981\u6027\u306f\u3001\u591a\u304f\u306e\u96fb\u5b50\u56de\u8def\u3067\u898b\u3089\u308c\u307e\u3059\u3002\u9069\u5207\u306a\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u306e\u9078\u5b9a\u3068\u914d\u7f6e\u306b\u3088\u308a\u3001\u96fb\u5b50\u6a5f\u5668\u306e\u6b63\u5e38\u306a\u52d5\u4f5c\u3092\u78ba\u4fdd\u3057\u3001EMI\u306e\u5f71\u97ff\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u6b63\u3057\u3044\u77e5\u8b58\u3092\u6301\u3063\u3066\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u5b89\u5b9a\u3057\u305f\u96fb\u5b50\u8a2d\u8a08\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

    \u96fb\u5b50\u56de\u8def\u306b\u304a\u3051\u308b\u96fb\u78c1\u5e72\u6e09(EMI)\u6291\u5236\u306b\u5f79\u7acb\u3064\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u306e\u4ed5\u7d44\u307f\u3092\u89e3\u8aac\u3002EMI\u306e\u5f71\u97ff\u3092\u8efd\u6e1b\u3059\u308b\u305f\u3081\u306e\u57fa\u672c\u539f\u7406\u3084\u5b9f\u7528\u7684\u306a\u5bfe\u7b56\u65b9\u6cd5\u3092\u7d39\u4ecb\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[102],"tags":[],"class_list":["post-213931","post","type-post","status-publish","format-standard","hentry","category-102","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"yoast_head":"\n\u96fb\u5b50\u56de\u8def\u306b\u304a\u3051\u308b\u96fb\u78c1\u5e72\u6e09(EMI)\u6291\u5236\u306b\u5f79\u7acb\u3064\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u306e\u4ed5\u7d44\u307f<\/title>\n<meta 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