{"id":111,"date":"2008-06-18T11:55:42","date_gmt":"2008-06-18T02:55:42","guid":{"rendered":"http:\/\/www.audiodesign.co.jp\/blog\/?p=111"},"modified":"2021-11-19T10:06:35","modified_gmt":"2021-11-19T01:06:35","slug":"ynyiycyoyidhiiacoyfeteyeyeyoyyyieaeoy","status":"publish","type":"post","link":"https:\/\/audiodesign.co.jp\/blog\/?p=111","title":{"rendered":"\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306e\u51fa\u529b\u7d20\u5b50\u3000\u2212FET\u3068\u30c8\u30e9\u30f3\u30b8\u30b9\u30bf\u306e\u6bd4\u8f03\u2212"},"content":{"rendered":"<p>\u534a\u5c0e\u4f53\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306e\u51fa\u529b\u7d20\u5b50\u306b\u306f\u30d0\u30a4\u30dd\u30fc\u30e9\u30c8\u30e9\u30f3\u30b8\u30b9\u30bf\u3068FET\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u4e21\u8005\u306e\u7279\u8cea\u3092\u6bd4\u8f03\u3057\u3066\u307f\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>FET\u306f\u6b74\u53f2\u7684\u306b\u306f\u3044\u308d\u3044\u308d\u3042\u308a\u307e\u3059\u304c\u3001\u73fe\u5728\u3067\u3082\u5165\u624b\u304c\u53ef\u80fd\u306a\u306e\u306fMOS-FET\u3060\u3068\u601d\u3044\u307e\u3059\u306e\u3067\u3001MOS\u2212FET\u3068\u30d0\u30a4\u30dd\u30fc\u30e9\u30c8\u30e9\u30f3\u30b8\u30b9\u30bf\u3092\u6bd4\u8f03\u3057\u3066\u307f\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>\u4e0b\u306e\u56f3\u306f\u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u7528\u306b\u4f5c\u3089\u308c\u305fMOS-FET\u306e\u4e00\u3064\uff12SK1529\u306e\u4f1d\u9054\u30a2\u30c9\u30df\u30c3\u30bf\u30f3\u30b9Yfs\uff08Gm\u3068\u540c\u3058\uff09\u7279\u6027\u3067\u3059\u3002\u3053\u308c\u306f\u5165\u529b\u96fb\u5727Vgs\u306e\u5909\u5316\u306b\u5bfe\u3059\u308b\u51fa\u529b\u96fb\u6d41Id\u306e\u9006\u6570\u3067\u3059\u3002<\/p>\n<p>\u3059\u306a\u308f\u3061\u3000Yfs\uff1d\u0394Id\/\u0394Vgs\u3000\u3067\u3059\u3002\u3053\u308c\u3092\u51fa\u529b\u6bb5\u306b\u7528\u3044\u305f\u5834\u5408\u306e\u51fa\u529b\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306fYfs\u306e\u9006\u6570\u306b\u306a\u308a\u307e\u3059\u3002\u305f\u3068\u3048\u3070Yfs\u304c\uff12\uff08\uff53\uff09\u306e\u5834\u5408\u30010.5\u03a9\u306b\u306a\u308a\u307e\u3059\u3002\u5b9f\u969b\u306e\u30a2\u30f3\u30d7\u3067\u306fNFB\u3092\u304b\u3051\u307e\u3059\u306e\u3067NFB\u306e\u5206\u3060\u3051\uff08\u6570\u767e\u304b\u3089\u6570\u5343\u5206\u306e\uff11\u306b\uff09\u51fa\u529b\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306f\u4e0b\u304c\u308a\u307e\u3059\u3002\u30a2\u30a4\u30c9\u30ea\u30f3\u30b0\u96fb\u6d41\u306f\u4e00\u822c\u306b0.1A\u7a0b\u5ea6\u3067\u3059\u304b\u3089\u3001NFB\u524d\u306f\uff12\u03a9\uff08=0.5S\uff09\u304f\u3089\u3044\u306e\u51fa\u529b\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306b\u306a\u308a\u307e\u3059\u3002\u7d50\u69cb\u5927\u304d\u3044\u306e\u3067\u3059\u3002\u4f59\u8ac7\u3067\u3059\u304c\u51fa\u529b\u6bb5\u304cNON-NFB\u306e\u30a2\u30f3\u30d7\u3067\u306f\u3053\u306e\u307e\u307e\u306e\u51fa\u529b\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306b\u306a\u308b\u306e\u3067\u4f4e\u97f3\u304c\u307e\u3063\u305f\u304f\u3057\u307e\u3089\u306a\u304f\u306a\u308b\uff08\u306f\u305a\u306a\uff09\u306e\u3067\u3059\u3002UHC-MOS\u3068\u3044\u308f\u308c\u308b\u7d20\u5b50\u3067\u3082\u305f\u3044\u3057\u3066\u6539\u5584\u3055\u308c\u305a\u9752\u3068\u9ed2\u7dda\u306e\u9593\u304f\u3089\u3044\u3067\u3059\u3002<br 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