{"id":209018,"date":"2024-03-21T14:05:30","date_gmt":"2024-03-21T14:05:30","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%e3%83%ad%e3%83%bc%e3%83%91%e3%82%b9%e3%83%95%e3%82%a3%e3%83%ab%e3%82%bf%e3%83%bc%e6%96%b9%e7%a8%8b%e5%bc%8f-%e8%a7%a3%e8%aa%ac%e3%81%a8%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95\/"},"modified":"2024-05-17T15:06:00","modified_gmt":"2024-05-17T15:06:00","slug":"%e3%83%ad%e3%83%bc%e3%83%91%e3%82%b9%e3%83%95%e3%82%a3%e3%83%ab%e3%82%bf%e3%83%bc%e6%96%b9%e7%a8%8b%e5%bc%8f-%e8%a7%a3%e8%aa%ac%e3%81%a8%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ja\/%e3%83%ad%e3%83%bc%e3%83%91%e3%82%b9%e3%83%95%e3%82%a3%e3%83%ab%e3%82%bf%e3%83%bc%e6%96%b9%e7%a8%8b%e5%bc%8f-%e8%a7%a3%e8%aa%ac%e3%81%a8%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95\/","title":{"rendered":"\u30ed\u30fc\u30d1\u30b9\u30d5\u30a3\u30eb\u30bf\u30fc\u65b9\u7a0b\u5f0f | \u89e3\u8aac\u3068\u8a08\u7b97\u65b9\u6cd5"},"content":{"rendered":"<p class=\"sidekick\">\u30ed\u30fc\u30d1\u30b9\u30d5\u30a3\u30eb\u30bf\u30fc\u65b9\u7a0b\u5f0f\u306b\u3064\u3044\u3066\u89e3\u8aac\u3002\u30ab\u30c3\u30c8\u30aa\u30d5\u5468\u6ce2\u6570\u306e\u8a08\u7b97\u65b9\u6cd5\u3084\u96fb\u5727\u5fdc\u7b54\u306e\u57fa\u790e\u3092\u521d\u5fc3\u8005\u3067\u3082\u7406\u89e3\u3057\u3084\u3059\u304f\u8aac\u660e\u3002<\/p>\n<h2>\u30ed\u30fc\u30d1\u30b9\u30d5\u30a3\u30eb\u30bf\u30fc\u65b9\u7a0b\u5f0f | \u89e3\u8aac\u3068\u8a08\u7b97\u65b9\u6cd5<\/h2>\n<p>\u30ed\u30fc\u30d1\u30b9\u30d5\u30a3\u30eb\u30bf\u30fc\uff08LPF\uff09\u306f\u3001\u9ad8\u5468\u6ce2\u6210\u5206\u3092\u6e1b\u8870\u3055\u305b\u3001\u4f4e\u5468\u6ce2\u6210\u5206\u3092\u901a\u904e\u3055\u305b\u308b\u96fb\u5b50\u56de\u8def\u306e\u4e00\u7a2e\u3067\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f\u3001\u30ed\u30fc\u30d1\u30b9\u30d5\u30a3\u30eb\u30bf\u30fc\u306e\u57fa\u672c\u7684\u306a\u65b9\u7a0b\u5f0f\u3068\u305d\u306e\u8a08\u7b97\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<h2>\u30ed\u30fc\u30d1\u30b9\u30d5\u30a3\u30eb\u30bf\u30fc\u306e\u57fa\u672c<\/h2>\n<p>\u30ed\u30fc\u30d1\u30b9\u30d5\u30a3\u30eb\u30bf\u30fc\u306f\u3001\u4e3b\u306b\u62b5\u6297\u5668\uff08R\uff09\u3068\u30b3\u30f3\u30c7\u30f3\u30b5\uff08C\uff09\u3067\u69cb\u6210\u3055\u308c\u308b\u7c21\u5358\u306a\u56de\u8def\u3067\u3059\u3002RC\u30ed\u30fc\u30d1\u30b9\u30d5\u30a3\u30eb\u30bf\u30fc\u3068\u547c\u3070\u308c\u308b\u3053\u306e\u30d5\u30a3\u30eb\u30bf\u30fc\u306f\u3001\u7279\u5b9a\u306e\u30ab\u30c3\u30c8\u30aa\u30d5\u5468\u6ce2\u6570\u3092\u6301\u3061\u3001\u305d\u308c\u3092\u5883\u306b\u9ad8\u5468\u6ce2\u6210\u5206\u3092\u6e1b\u8870\u3055\u305b\u307e\u3059\u3002<\/p>\n<h2>\u30ab\u30c3\u30c8\u30aa\u30d5\u5468\u6ce2\u6570\u306e\u8a08\u7b97<\/h2>\n<p>\u30ab\u30c3\u30c8\u30aa\u30d5\u5468\u6ce2\u6570 (\\( f_c \\)) \u306f\u30d5\u30a3\u30eb\u30bf\u30fc\u306e\u7279\u5fb4\u3092\u8868\u3057\u3001\u6b21\u306e\u5f0f\u3067\u8868\u3055\u308c\u307e\u3059\uff1a<\/p>\n<p>$$ f_c = \\frac{1}{2 \\pi R C} $$<\/p>\n<p>\u3053\u3053\u3067\u3001<\/p>\n<ul>\n<li> \\( R \\) \u306f\u62b5\u6297\u5024\uff08\u30aa\u30fc\u30e0\uff09<\/li>\n<li> \\( C \\) \u306f\u30ad\u30e3\u30d1\u30b7\u30bf\u30f3\u30b9\uff08\u30d5\u30a1\u30e9\u30c9\uff09<\/li>\n<\/ul>\n<p>\u4f8b\u3048\u3070\u3001\u3082\u3057\u62b5\u6297\u5024\u304c10\u30ad\u30ed\u30aa\u30fc\u30e0\uff08\\( 10k\\Omega \\)\uff09\u3067\u3001\u30ad\u30e3\u30d1\u30b7\u30bf\u30f3\u30b9\u304c100\u30ca\u30ce\u30d5\u30a1\u30e9\u30c9\uff08\\( 100nF \\)\uff09\u3067\u3042\u308c\u3070\u3001\u30ab\u30c3\u30c8\u30aa\u30d5\u5468\u6ce2\u6570\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a08\u7b97\u3055\u308c\u307e\u3059\uff1a<\/p>\n<p>$$ f_c = \\frac{1}{2 \\pi \\times 10,000 \\times 100 \\times 10^{-9}} \\approx 159.15 \\text{Hz} $$<\/p>\n<h2>\u30ed\u30fc\u30d1\u30b9\u30d5\u30a3\u30eb\u30bf\u30fc\u306e\u96fb\u5727\u5fdc\u7b54<\/h2>\n<p>\u6b21\u306b\u3001\u30ed\u30fc\u30d1\u30b9\u30d5\u30a3\u30eb\u30bf\u30fc\u306e\u30a4\u30f3\u30d7\u30c3\u30c8\u4fe1\u53f7\u306b\u5bfe\u3059\u308b\u30a2\u30a6\u30c8\u30d7\u30c3\u30c8\u4fe1\u53f7\u306e\u96fb\u5727\u5fdc\u7b54\u3092\u8003\u3048\u307e\u3059\u3002\u30a4\u30f3\u30d7\u30c3\u30c8\u96fb\u5727\u3092 \\( V_{in} \\) \u3001\u30a2\u30a6\u30c8\u30d7\u30c3\u30c8\u96fb\u5727\u3092 \\( V_{out} \\) \u3068\u3059\u308b\u3068\u3001\u3042\u308b\u5468\u6ce2\u6570 \\( f \\) \u306b\u304a\u3051\u308b\u30a2\u30a6\u30c8\u30d7\u30c3\u30c8\u96fb\u5727\u306f\u4ee5\u4e0b\u306e\u5f0f\u3067\u6c42\u3081\u3089\u308c\u307e\u3059\uff1a<\/p>\n<p>$$ V_{out} = V_{in} \\times \\frac{1}{\\sqrt{1 + \\left( 2 \\pi f R C \\right)^2 }} $$<\/p>\n<p>\u3053\u306e\u5f0f\u306f\u3001\u5468\u6ce2\u6570 \\( f \\) \u304c\u30ab\u30c3\u30c8\u30aa\u30d5\u5468\u6ce2\u6570 \\( f_c \\) \u3088\u308a\u9ad8\u304f\u306a\u308b\u306b\u3064\u308c\u3066\u3001 \\( V_{out} \\) \u304c\u6025\u6fc0\u306b\u6e1b\u5c11\u3059\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u30ed\u30fc\u30d1\u30b9\u30d5\u30a3\u30eb\u30bf\u30fc\u306f\u3001\u4fe1\u53f7\u4e2d\u306e\u9ad8\u5468\u6ce2\u6210\u5206\u3092\u6e1b\u8870\u3055\u305b\u308b\u305f\u3081\u306e\u57fa\u672c\u7684\u306a\u56de\u8def\u3067\u3059\u3002RC\u30ed\u30fc\u30d1\u30b9\u30d5\u30a3\u30eb\u30bf\u30fc\u306e\u5834\u5408\u3001\u30ab\u30c3\u30c8\u30aa\u30d5\u5468\u6ce2\u6570\u306f \\( R \\) \u3068 \\( C \\) \u306e\u5024\u306b\u4f9d\u5b58\u3057\u3001\u4ee5\u4e0b\u306e\u5f0f\u3067\u6c42\u3081\u3089\u308c\u307e\u3059\uff1a<\/p>\n<p>$$ f_c = \\frac{1}{2 \\pi R C} $$<\/p>\n<p>\u307e\u305f\u3001\u30a2\u30a6\u30c8\u30d7\u30c3\u30c8\u96fb\u5727\u306f\u5468\u6ce2\u6570\u306b\u5fdc\u3058\u3066\u4ee5\u4e0b\u306e\u5f0f\u3067\u8a08\u7b97\u3055\u308c\u307e\u3059\uff1a<\/p>\n<p>$$ V_{out} = V_{in} \\times \\frac{1}{\\sqrt{1 + \\left( 2 \\pi f R C \\right)^2 }} $$<\/p>\n<p>\u3053\u308c\u3089\u306e\u57fa\u672c\u7684\u306a\u7406\u89e3\u3092\u6301\u3064\u3053\u3068\u3067\u3001\u30ed\u30fc\u30d1\u30b9\u30d5\u30a3\u30eb\u30bf\u30fc\u306e\u8a2d\u8a08\u3084\u89e3\u6790\u304c\u5bb9\u6613\u306b\u306a\u308a\u307e\u3059\u3002\u521d\u5fc3\u8005\u306e\u65b9\u3067\u3082\u3053\u306e\u5185\u5bb9\u3092\u53c2\u8003\u306b\u3057\u3066\u3001\u5b9f\u969b\u306e\u56de\u8def\u8a2d\u8a08\u3084\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u306b\u6311\u6226\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30ed\u30fc\u30d1\u30b9\u30d5\u30a3\u30eb\u30bf\u30fc\u65b9\u7a0b\u5f0f\u306b\u3064\u3044\u3066\u89e3\u8aac\u3002\u30ab\u30c3\u30c8\u30aa\u30d5\u5468\u6ce2\u6570\u306e\u8a08\u7b97\u65b9\u6cd5\u3084\u96fb\u5727\u5fdc\u7b54\u306e\u57fa\u790e\u3092\u521d\u5fc3\u8005\u3067\u3082\u7406\u89e3\u3057\u3084\u3059\u304f\u8aac\u660e\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":[96],"tags":[97],"class_list":["post-209018","post","type-post","status-publish","format-standard","hentry","category-96","tag-97","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"yoast_head":"<!-- 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