{"id":208957,"date":"2024-03-21T14:05:03","date_gmt":"2024-03-21T14:05:03","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/bjt%e9%9b%bb%e6%b5%81%e6%96%b9%e7%a8%8b%e5%bc%8f-%e5%ae%9a%e7%be%a9%e3%80%81%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95%e3%80%81%e5%bf%9c%e7%94%a8\/"},"modified":"2024-05-17T15:04:44","modified_gmt":"2024-05-17T15:04:44","slug":"bjt%e9%9b%bb%e6%b5%81%e6%96%b9%e7%a8%8b%e5%bc%8f-%e5%ae%9a%e7%be%a9%e3%80%81%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95%e3%80%81%e5%bf%9c%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ja\/bjt%e9%9b%bb%e6%b5%81%e6%96%b9%e7%a8%8b%e5%bc%8f-%e5%ae%9a%e7%be%a9%e3%80%81%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95%e3%80%81%e5%bf%9c%e7%94%a8\/","title":{"rendered":"BJT\u96fb\u6d41\u65b9\u7a0b\u5f0f | \u5b9a\u7fa9\u3001\u8a08\u7b97\u65b9\u6cd5\u3001\u5fdc\u7528"},"content":{"rendered":"<p class=\"sidekick\">BJT\u96fb\u6d41\u65b9\u7a0b\u5f0f\u306e\u5b9a\u7fa9\u3001\u8a08\u7b97\u65b9\u6cd5\u3001\u5fdc\u7528\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3002\u30a8\u30df\u30c3\u30bf\u96fb\u6d41\u3001\u30d9\u30fc\u30b9\u96fb\u6d41\u3001\u30b3\u30ec\u30af\u30bf\u96fb\u6d41\u306e\u95a2\u4fc2\u3068\u5177\u4f53\u7684\u306a\u4f8b\u3092\u7d39\u4ecb\u3002<\/p>\n<h2>BJT\u96fb\u6d41\u65b9\u7a0b\u5f0f | \u5b9a\u7fa9\u3001\u8a08\u7b97\u65b9\u6cd5\u3001\u5fdc\u7528<\/h2>\n<p>BJT\uff08\u30d0\u30a4\u30dd\u30fc\u30e9\u63a5\u5408\u30c8\u30e9\u30f3\u30b8\u30b9\u30bf\uff09\u306f\u3001\u96fb\u5b50\u6a5f\u5668\u3084\u56de\u8def\u8a2d\u8a08\u306b\u304a\u3044\u3066\u975e\u5e38\u306b\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3066\u3044\u307e\u3059\u3002\u4eca\u56de\u306f\u3001BJT\u96fb\u6d41\u65b9\u7a0b\u5f0f\u306e\u5b9a\u7fa9\u3001\u8a08\u7b97\u65b9\u6cd5\u3001\u305d\u3057\u3066\u5fdc\u7528\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<h3>BJT\u306e\u57fa\u672c\u6982\u5ff5<\/h3>\n<p>BJT\u306f\u3001N\u578b\u3068P\u578b\u306e\u534a\u5c0e\u4f53\u6750\u6599\u304c\u9806\u756a\u306b\u914d\u7f6e\u3055\u308c\u305f\u69cb\u9020\u3092\u6301\u3061\u3001\u30a8\u30df\u30c3\u30bf\uff08Emitter\uff09\u3001\u30d9\u30fc\u30b9\uff08Base\uff09\u3001\u305d\u3057\u3066\u30b3\u30ec\u30af\u30bf\uff08Collector\uff09\u3068\u3044\u30463\u3064\u306e\u7aef\u5b50\u3092\u6301\u3061\u307e\u3059\u3002\u3053\u306e\u30c8\u30e9\u30f3\u30b8\u30b9\u30bf\u306b\u306fNPN\u578b\u3068PNP\u578b\u306e2\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u3053\u3053\u3067\u306f\u4e00\u822c\u7684\u306aNPN\u578b\u3092\u4f8b\u306b\u3068\u3063\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<h3>BJT\u96fb\u6d41\u65b9\u7a0b\u5f0f\u306e\u5b9a\u7fa9<\/h3>\n<p>BJT\u306e\u52d5\u4f5c\u306f\u30d9\u30fc\u30b9\u7aef\u5b50\u306b\u6d41\u308c\u308b\u5c0f\u3055\u306a\u96fb\u6d41\u304c\u3001\u30a8\u30df\u30c3\u30bf-\u30b3\u30ec\u30af\u30bf\u9593\u306e\u5927\u304d\u306a\u96fb\u6d41\u3092\u5236\u5fa1\u3059\u308b\u3068\u3044\u3046\u539f\u7406\u306b\u57fa\u3065\u3044\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u52d5\u4f5c\u3092\u6570\u5f0f\u3067\u8868\u3057\u305f\u3082\u306e\u304cBJT\u96fb\u6d41\u65b9\u7a0b\u5f0f\u3067\u3059\u3002<\/p>\n<p>\u30a8\u30df\u30c3\u30bf\u96fb\u6d41 (\\( I_E \\))\u3001\u30d9\u30fc\u30b9\u96fb\u6d41 (\\( I_B \\))\u3001\u305d\u3057\u3066\u30b3\u30ec\u30af\u30bf\u96fb\u6d41 (\\( I_C \\)) \u306e\u9593\u306b\u306f\u4ee5\u4e0b\u306e\u95a2\u4fc2\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n<p>\\[<br \/>\nI_E = I_C + I_B<br \/>\n\\]<\/p>\n<p>\u307e\u305f\u3001\u30b3\u30ec\u30af\u30bf\u96fb\u6d41\u3068\u30d9\u30fc\u30b9\u96fb\u6d41\u306e\u95a2\u4fc2\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n<p>\\[<br \/>\nI_C = \\beta I_B<br \/>\n\\]<\/p>\n<p>\u3053\u3053\u3067 \\(\\beta\\)\uff08hFE\u3068\u3082\u547c\u3070\u308c\u308b\uff09\u306f\u3001\u30b3\u30ec\u30af\u30bf\u96fb\u6d41\u3068\u30d9\u30fc\u30b9\u96fb\u6d41\u306e\u6bd4\u7387\u3067\u3042\u308a\u3001\u30c8\u30e9\u30f3\u30b8\u30b9\u30bf\u306e\u5897\u5e45\u7387\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<h3>\u8a08\u7b97\u65b9\u6cd5<\/h3>\n<p>BJT\u306e\u96fb\u6d41\u3092\u8a08\u7b97\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u30b9\u30c6\u30c3\u30d7\u306b\u5f93\u3044\u307e\u3059\u3002<\/p>\n<p>1. **\u30d9\u30fc\u30b9\u96fb\u6d41 (\\(I_B\\)) \u306e\u8a08\u7b97**: \u30d9\u30fc\u30b9\u96fb\u6d41\u306f\u3001\u30d9\u30fc\u30b9-\u30a8\u30df\u30c3\u30bf\u9593\u306e\u96fb\u5727 (\\(V_{BE}\\)) \u3068\u30d9\u30fc\u30b9\u62b5\u6297 (\\(R_B\\)) \u3092\u4f7f\u7528\u3057\u3066\u8a08\u7b97\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\\[<br \/>\nI_B = \\frac{V_{BE}}{R_B}<br \/>\n\\]<\/p>\n<p>2. **\u30b3\u30ec\u30af\u30bf\u96fb\u6d41 (\\(I_C\\)) \u306e\u8a08\u7b97**: \u30d9\u30fc\u30b9\u96fb\u6d41\u3068\u5897\u5e45\u7387\u3092\u4f7f\u7528\u3057\u3066\u30b3\u30ec\u30af\u30bf\u96fb\u6d41\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002<\/p>\n<p>\\[<br \/>\nI_C = \\beta I_B<br \/>\n\\]<\/p>\n<p>3. **\u30a8\u30df\u30c3\u30bf\u96fb\u6d41 (\\(I_E\\)) \u306e\u8a08\u7b97**: \u30a8\u30df\u30c3\u30bf\u96fb\u6d41\u306f\u30b3\u30ec\u30af\u30bf\u96fb\u6d41\u3068\u30d9\u30fc\u30b9\u96fb\u6d41\u306e\u5408\u8a08\u3067\u3059\u3002<\/p>\n<p>\\[<br \/>\nI_E = I_C + I_B<br \/>\n\\]<\/p>\n<h3>\u5b9f\u969b\u306e\u4f8b<\/h3>\n<p>\u5177\u4f53\u7684\u306a\u4f8b\u3092\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u3042\u308bNPN\u578b\u30c8\u30e9\u30f3\u30b8\u30b9\u30bf\u3067\u4ee5\u4e0b\u306e\u5024\u304c\u4e0e\u3048\u3089\u308c\u3066\u3044\u307e\u3059\uff1a<\/p>\n<p>&#8211; \\( V_{BE} = 0.7V \\)<br \/>\n&#8211; \\( R_B = 1k\\Omega \\)<br \/>\n&#8211; \\(\\beta = 100\\)<\/p>\n<p>1. \u30d9\u30fc\u30b9\u96fb\u6d41\u3092\u8a08\u7b97\u3057\u307e\u3059:<br \/>\n\\[<br \/>\nI_B = \\frac{0.7V}{1k\\Omega} = 0.7mA<br \/>\n\\]<\/p>\n<p>2. \u30b3\u30ec\u30af\u30bf\u96fb\u6d41\u3092\u8a08\u7b97\u3057\u307e\u3059:<br \/>\n\\[<br \/>\nI_C = \\beta I_B = 100 \\times 0.7mA = 70mA<br \/>\n\\]<\/p>\n<p>3. \u30a8\u30df\u30c3\u30bf\u96fb\u6d41\u3092\u8a08\u7b97\u3057\u307e\u3059:<br \/>\n\\[<br \/>\nI_E = I_C + I_B = 70mA + 0.7mA = 70.7mA<br \/>\n\\]<\/p>\n<h3>BJT\u306e\u5fdc\u7528<\/h3>\n<p>BJT\u306f\u591a\u6570\u306e\u5b9f\u7528\u7684\u306a\u5fdc\u7528\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u305d\u306e\u4e00\u90e8\u3067\u3059\u3002<\/p>\n<p>&#8211; **\u5897\u5e45\u5668**: \u30aa\u30fc\u30c7\u30a3\u30aa\u4fe1\u53f7\u3084RF\u4fe1\u53f7\u3092\u5897\u5e45\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<br \/>\n&#8211; **\u30b9\u30a4\u30c3\u30c1**: \u30c7\u30b8\u30bf\u30eb\u56de\u8def\u3067\u30aa\u30f3\u30fb\u30aa\u30d5\u30b9\u30a4\u30c3\u30c1\u3068\u3057\u3066\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<br \/>\n&#8211; **\u96fb\u6e90\u56de\u8def**: \u96fb\u6d41\u6e90\u3084\u96fb\u5727\u30ec\u30ae\u30e5\u30ec\u30fc\u30bf\u306b\u7528\u3044\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u4ee5\u4e0a\u306e\u3088\u3046\u306b\u3001BJT\u96fb\u6d41\u65b9\u7a0b\u5f0f\u306f\u975e\u5e38\u306b\u57fa\u672c\u7684\u304b\u3064\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3042\u308a\u3001\u30a8\u30ec\u30af\u30c8\u30ed\u30cb\u30af\u30b9\u306e\u5206\u91ce\u3067\u5e83\u304f\u5fdc\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u521d\u5fc3\u8005\u306e\u65b9\u3082\u3053\u306e\u65b9\u7a0b\u5f0f\u3092\u3057\u3063\u304b\u308a\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u9ad8\u5ea6\u306a\u56de\u8def\u8a2d\u8a08\u3084\u89e3\u6790\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>BJT\u96fb\u6d41\u65b9\u7a0b\u5f0f\u306e\u5b9a\u7fa9\u3001\u8a08\u7b97\u65b9\u6cd5\u3001\u5fdc\u7528\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3002\u30a8\u30df\u30c3\u30bf\u96fb\u6d41\u3001\u30d9\u30fc\u30b9\u96fb\u6d41\u3001\u30b3\u30ec\u30af\u30bf\u96fb\u6d41\u306e\u95a2\u4fc2\u3068\u5177\u4f53\u7684\u306a\u4f8b\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":[96],"tags":[97],"class_list":["post-208957","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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