{"id":1397,"date":"2025-03-03T10:00:23","date_gmt":"2025-03-03T10:00:23","guid":{"rendered":"http:\/\/schumann.jp\/?p=1397"},"modified":"2025-03-03T10:15:25","modified_gmt":"2025-03-03T10:15:25","slug":"class-aa-%e3%83%91%e3%83%af%e3%83%bc%e3%82%a2%e3%83%b3%e3%83%97%e3%81%af%e5%ae%9f%e7%8f%be%e3%81%a7%e3%81%8d%e3%82%8b%e3%81%8b%e3%83%bb%e3%83%bb%e3%83%bb%e3%81%aa%e3%82%93%e3%81%a8%e3%81%8b%e3%81%a7","status":"publish","type":"post","link":"http:\/\/schumann.jp\/?p=1397","title":{"rendered":"Class AA \u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306f\u5b9f\u73fe\u3067\u304d\u308b\u304b\u30fb\u30fb\u30fb\u306a\u3093\u3068\u304b\u3067\u304d\u305f\u7de8"},"content":{"rendered":"\n<p>Gain 20dB \u306e\u3068\u304d\u306e\u97f3\u304c\u826f\u304b\u3063\u305f\u3053\u3068\u3092\u305f\u3088\u308a\u306b\u3001NFB\u62b5\u6297\u3092\u5143\u306b\u623b\u3059\u3053\u3068\u306b\u3057\u305f\u3002\u3000\u4e0b\u56f3\u306eNFB\u62b5\u6297 10k\u03a9 \u306e\u3068\u3053\u308d\u3067\u3042\u308b\u3002\u3000<a href=\"http:\/\/schumann.jp\/?p=1393\">\u3042\u304d\u3089\u3081\u305f\u7de8<\/a>\u3067\u306f\u3001NFB\u62b5\u6297\u304c22k\u03a9\u306b\u306a\u3063\u3066\u3044\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"716\" height=\"644\" src=\"http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/ClassAA-Power-Circuit.png\" alt=\"\" class=\"wp-image-1398\" srcset=\"http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/ClassAA-Power-Circuit.png 716w, http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/ClassAA-Power-Circuit-667x600.png 667w\" sizes=\"(max-width: 716px) 100vw, 716px\" \/><\/figure>\n\n\n\n<p>\u5de6\u30c1\u30e3\u30f3\u30cd\u30eb\u3067\u306f\u3001C1 = 2200pF, C2 = 82pF\u3001\u53f3\u30c1\u30e3\u30f3\u30cd\u30eb\u3067\u306f\u3001C1 = 4700pF, C2 = 220pF \u306b\u3066\u4e0b\u8a18\u306e\u96d1\u97f3\u3072\u305a\u307f\u7387\u7279\u6027\u3067\u3042\u308b\u3002\u3000\u5de6\u30c1\u30e3\u30f3\u30cd\u30eb\u3067\u306f <a href=\"http:\/\/schumann.jp\/?p=1393\">\u3042\u304d\u3089\u3081\u305f\u7de8<\/a> \u306e\u3072\u305a\u307f\u7387\u7279\u6027\u306e\u540d\u6b8b\u306e\u3088\u3046\u306b 10kHz \u3067 1W \u4ed8\u8fd1\u306e\u3072\u305a\u307f\u7387\u304c\u5897\u52a0\u3057\u3066\u3044\u308b\u3002\u3000\u53f3\u30c1\u30e3\u30f3\u30cd\u30eb\u3067\u306f\u3001\u3053\u306e\u3088\u3046\u306a\u7279\u6027\u306f\u8a8d\u3081\u3089\u308c\u3066\u3044\u306a\u3044\u3002\u3000\u3053\u308c\u3060\u3051\u3092\u898b\u308b\u3068\u3001\u53f3\u30c1\u30e3\u30f3\u30cd\u30eb\u306e\u307b\u3046\u304c\u512a\u79c0\u306b\u898b\u3048\u308b\u304c\u3001\u53f3\u30c1\u30e3\u30f3\u30cd\u30eb\u306f\u6700\u5927\u51fa\u529b\u306e\u6642\u306b DC\u6f0f\u308c\u304c\u5897\u52a0\u3059\u308b\u3053\u3068\u304c\u308f\u304b\u3063\u3066\u304a\u308a\u3001\u75db\u3057\u304b\u3086\u3057\u3067\u3042\u308b\u3002\u3000\u3068\u306f\u3044\u3063\u3066\u3082\u3001\u5b9f\u969b\u306b\u4f7f\u7528\u3057\u3066\u3044\u308b 3W \u7a0b\u5ea6\u307e\u3067\u306f\u30010.05V \u672a\u6e80\u3067\u3042\u308b\u306e\u3067\u3001\u3053\u308c\u4ee5\u4e0a\u8ffd\u308f\u306a\u3044\u3053\u3068\u306b\u3057\u305f\u3002\u3000\u6700\u5927\u51fa\u529b\u306f\u5de6\u53f3\u3068\u3082\u3001\u96d1\u97f3\u3072\u305a\u307f\u7387 5% \u3067\u3042\u308b\u3068\u3001\u3069\u306e\u5468\u6ce2\u6570\u3067\u3082\u300116W \uff088\u03a9\uff09\u3067\u3042\u308b\u3002\u3000\u3061\u306a\u307f\u306b\u30014\u03a9\u3067\u306f\u300125W\u7a0b\u5ea6\u3068\u306a\u308b\u306e\u3067\u3001\u51fa\u529b\u3092\u5897\u5927\u3055\u305b\u308b\u3068\u3044\u3046\u76ee\u7684\u306f\u9054\u6210\u3057\u305f\u3068\u8a00\u3048\u3088\u3046\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"771\" height=\"709\" src=\"http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/THD-Left.png\" alt=\"\" class=\"wp-image-1399\" srcset=\"http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/THD-Left.png 771w, http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/THD-Left-652x600.png 652w, http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/THD-Left-768x706.png 768w\" sizes=\"(max-width: 771px) 100vw, 771px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"793\" height=\"703\" src=\"http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/THD-Right.png\" alt=\"\" class=\"wp-image-1400\" srcset=\"http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/THD-Right.png 793w, http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/THD-Right-677x600.png 677w, http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/THD-Right-768x681.png 768w\" sizes=\"(max-width: 793px) 100vw, 793px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-medium\"><a href=\"http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/Left.png\"><img loading=\"lazy\" width=\"800\" height=\"302\" src=\"http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/Left-800x302.png\" alt=\"\" class=\"wp-image-1401\" srcset=\"http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/Left-800x302.png 800w, http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/Left-768x290.png 768w, http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/Left-1536x579.png 1536w, http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/Left.png 1825w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><figcaption>\u30af\u30ea\u30c3\u30af\u3067\u62e1\u5927<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-medium\"><a href=\"http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/Right.png\"><img loading=\"lazy\" width=\"800\" height=\"306\" src=\"http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/Right-800x306.png\" alt=\"\" class=\"wp-image-1402\" srcset=\"http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/Right-800x306.png 800w, http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/Right-768x294.png 768w, http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/Right-1536x588.png 1536w, http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/Right.png 1830w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><figcaption>\u30af\u30ea\u30c3\u30af\u3067\u62e1\u5927<\/figcaption><\/figure>\n\n\n\n<p>\u5468\u6ce2\u6570\u7279\u6027\u306f\u4e0a\u56f3\u306b\u793a\u3057\u305f\u3002\u3000\u5de6\u53f3\u3067\u3051\u3063\u3053\u3046\u30d5\u30e9\u30c3\u30c8\u90e8\u5206\u304c\u7570\u306a\u308b\u304c\u3001C2 \u3092\u5897\u6e1b\u3055\u305b\u308b\u3068\u3001\u3088\u304f\u308f\u304b\u3089\u306a\u3044\u30d4\u30fc\u30af\u3084\u30c7\u30a3\u30c3\u30d7\u304c\u3001200kHz \u4ee5\u4e0a\u306e\u90e8\u5206\u3067\u3067\u3066\u304f\u308b\u3002\u3000\u3053\u306e\u7279\u6027\u3067\u7cbe\u3044\u3063\u3071\u3044\u3068\u3044\u3063\u305f\u3068\u3053\u308d\u3060\u3002\u3000\u6b8b\u7559\u96d1\u97f3\u306f\u3001\u5de6\u3067 0.09mV\u3001\u53f3\u3067 0.12mV \uff08\u3044\u305a\u308c\u3082\u3001GwINSTEK GDM-8261A\u76f4\u8aad\uff09\u3067\u3042\u3063\u305f\u3002\u3000\u30c0\u30f3\u30d4\u30f3\u30b0\u30d5\u30a1\u30af\u30bf\u306f\u3001ON-OFF \u6cd5\u3067\u300120\u4ee5\u4e0a\u3068\u601d\u308f\u308c\u308b\u3002<\/p>\n\n\n\n<p>\u8a66\u8074\u3067\u306f\u3001\u3084\u3063\u3068\u5b89\u5fc3\u3057\u3066\u8074\u3051\u308b\u97f3\u8cea\u3067\u3042\u308b\u3002\u3000MUSES 05 \u3089\u3057\u304f\u3001\u30bd\u30ea\u30c3\u30c9\u306a\u4f4e\u97f3\u3068\u83ef\u9e97\u306b\u6563\u4e71\u3059\u308b\u9ad8\u97f3\u3068\u3044\u3063\u305f\u3068\u3053\u308d\u3060\u308d\u3046\u304b\u3002 <a href=\"http:\/\/schumann.jp\/?p=1330\">Victor SX700<\/a>  \u3092 <a href=\"http:\/\/schumann.jp\/?cat=196\">Class AA \u30d8\u30c3\u30c9\u30db\u30f3\u30a2\u30f3\u30d7<\/a> \u3067\u9cf4\u3089\u3059\u3068\u3001\u304d\u308c\u3044\u3060\u3051\u308c\u3069\u975e\u529b\u3055\u3092\u611f\u3058\u308b\u304c\u3001\u3053\u3061\u3089\u3067\u306f\u529b\u5f37\u3055\u3092\u611f\u3058\u308b\u3002\u3000<a href=\"http:\/\/schumann.jp\/?p=1102\">\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9<\/a>\u306b\u793a\u3057\u3066\u30d4\u30a2\u30ce\u306e\u30ad\u30fc\u30bf\u30c3\u30c1\u306e\u5dee\u306f\u697d\u3005\u8868\u73fe\u3057\u3066\u304f\u308c\u308b\u306e\u3067\u3001\u3088\u3044\u30a2\u30f3\u30d7\u3060\u3068\u601d\u3046\u3002<\/p>\n\n\n\n<p>\u3057\u304b\u3057\u306a\u304c\u3089\u3001\u7279\u6027\u3092\u898b\u3066\u3082\u3001\u307e\u305f\u518d\u73fe\u6027\u3068\u3044\u3046\u89b3\u70b9\u304b\u3089\u3082\u3001\u3053\u306e\u30a2\u30f3\u30d7\u306e\u4f5c\u6210\u306f\u5168\u304f\u304a\u52e7\u3081\u3067\u304d\u306a\u3044\u3002\u3000\u4eca\u56de\u306e\u4f5c\u6210\u904e\u7a0b\u3067\u3001TDA2030L \u3092\uff15\u500b\u4ee5\u4e0a\u58ca\u3057\u3066\u3057\u307e\u3063\u305f\u3002\u3000\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u5f0f\u5b9a\u96fb\u5727\u96fb\u6e90 TEXIO GwINSTEK GPS-2303 \u3092\u4f7f\u3063\u3066\u96fb\u6d41\u30ea\u30df\u30c3\u30bf\u30fc\u3092\u50cd\u304b\u305b\u306a\u304c\u3089\u3001\u57fa\u677f\u4f5c\u6210\u3092\u884c\u3063\u3066\u3001\u3053\u306e\u3042\u308a\u3055\u307e\u3067\u3042\u308b\u3002\u3000<\/p>\n\n\n\n<figure class=\"wp-block-image size-medium\"><a href=\"http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/DSC_3438-scaled.jpg\"><img loading=\"lazy\" width=\"800\" height=\"533\" src=\"http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/DSC_3438-800x533.jpg\" alt=\"\" class=\"wp-image-1403\" srcset=\"http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/DSC_3438-800x533.jpg 800w, http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/DSC_3438-1800x1200.jpg 1800w, http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/DSC_3438-768x512.jpg 768w, http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/DSC_3438-1536x1024.jpg 1536w, http:\/\/schumann.jp\/wp-content\/uploads\/2025\/03\/DSC_3438-2048x1365.jpg 2048w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><figcaption>\u30af\u30ea\u30c3\u30af\u3067\u62e1\u5927<\/figcaption><\/figure>\n\n\n\n<p>\u306f\u3089\u308f\u305f\u3092\u4e0a\u306b\u793a\u3057\u305f\u3002\u3000\u30c8\u30ed\u30a4\u30c0\u30eb\u30c8\u30e9\u30f3\u30b9\u306e\u4e0a\u306b\u306f\u3001\u305f\u304b\u3058\u3093\u3055\u3093\u306e PRT-02 \u57fa\u677f\u3001\u53f3\u306e\u5074\u9762\u306b \u305f\u304b\u3058\u3093\u3055\u3093\u306ePGA2311\u30dc\u30ea\u30e5\u30fc\u30e0\u3068 Balanced-Unbalanced \u5909\u63db\u57fa\u677f\u304c\u3042\u308b\u3002 \u3053\u306e Balanced-Unbalanced \u5909\u63db\u3082\u60a9\u307e\u3057\u3044\u3068\u3053\u308d\u3060\u3002\u3000\u306a\u305c\u306a\u3089\u3001Balanced-Unbalanced \u5909\u63db\u306b\u7528\u3044\u308b\u30aa\u30da\u30a2\u30f3\u30d7\u306e\u97f3\u8cea\u304c\u3001\u5927\u304d\u304f\u5f71\u97ff\u3057\u3066\u3057\u307e\u3046\u304b\u3089\u3060\u3002<\/p>\n\n\n\n<p>\u672c\u6a5f\u306e Unbalanced \u306e\u97f3\u306f\u3001MUSES 05 \u306e\u97f3\u8cea\u304c\u652f\u914d\u7684\u3067\u3042\u308b\u3088\u3046\u306b\u601d\u308f\u308c\u308b\u3002\u3000\u529b\u5f37\u3044\u4f4e\u57df\u3001\u3069\u76f4\u7403\u306e\u4e2d\u57df\u3001\u83ef\u9e97\u3067\u6563\u4e71\u3059\u308b\u9ad8\u57df\u3068\u3044\u3046\u611f\u3058\u3067\u3042\u308b\u3002 Balanced-Unbalanced \u5909\u63db\u306e\u30aa\u30da\u30a2\u30f3\u30d7\u3068\u3057\u3066\u3001\u5f53\u521d\u3001\u7121\u96e3\u306b LME49720 \u3092\u4f7f\u7528\u3057\u3066\u3044\u305f\u3002\u3000\u79c1\u306e\u5370\u8c61\u3067\u306f\u3001LME49720 \u306f\u3055\u308f\u3084\u304b\u3067\u60c5\u5831\u91cf\u304c\u591a\u304f\u3001\u7d50\u69cb\u6c17\u306b\u5165\u3063\u3066\u3044\u308b\u30aa\u30da\u30a2\u30f3\u30d7\u3060\u3002\u3000\u3057\u304b\u3057\u306a\u304c\u3089\u3001Unbalanced \u3068\u6bd4\u3079\u3066\u660e\u3089\u304b\u306b\u97f3\u306e\u65b9\u5411\u6027\u304c\u7570\u306a\u3063\u3066\u3057\u307e\u3046\u3002\u3000\u4f4e\u57df\u306e\u529b\u5f37\u3055\u304c\u306a\u304f\u306a\u308a\u3001\u9ad8\u57df\u306e\u83ef\u9e97\u3055\u304c\u306a\u304f\u306a\u308b\u3002\u3000\u8a66\u3057\u306b\u3001\u79c1\u306e\u5927\u597d\u304d\u306a MUSES 01 \u306b\u3059\u308b\u3068\u3001MUSES 05 \u3089\u3057\u3055\u304c\u30b9\u30dd\u30a4\u30eb\u3055\u308c\u3001\u30d4\u30e9\u30df\u30c3\u30c9\u5f62\u3067\u3001\u9ad8\u57df\u306f\u96f0\u56f2\u6c17\u611f\u3042\u3075\u308c\u308b\u97f3\u306b\u306a\u308b\u3002\u3000Unbalanced \u3067\u3082\u3053\u306e\u97f3\u306a\u3089\u3001\u5927\u5909\u6e80\u8db3\u3059\u308b\u3068\u3053\u308d\u3060\u3002\u3000\u305d\u308c\u3067\u306f\u3068\u3001\uff11\u56de\u8def\u2192\uff12\u56de\u8def\u5909\u63db\u57fa\u677f\u3092\u7528\u3044\u3066\u3001MUSES 05 \u3092\u4f7f\u3063\u3066\u307f\u308b\u3068\u3001MUSES 05 \u3089\u3057\u3055\u304c\u30de\u30b7\u30de\u30b7\u306b\u306a\u308a\u3001\u6d3e\u624b\u306a\u30c9\u30f3\u30b7\u30e3\u30ea\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u3002\u3000\u3055\u3059\u304c\u306b\u3053\u308c\u306f\u99c4\u76ee\u3060\u3002\u3075\u3068\u601d\u3044\u51fa\u3057\u305f\u306e\u306f\u3001MUSES 02 \u3060\u3002\u3000MUSES 02 \u306f\u304b\u3064\u3066IV\u5909\u63db\u306e\u305f\u3081\u306b\u8cfc\u5165\u3057\u305f\u304c\u3001MUSES 01 \u304c\u597d\u304d\u3059\u304e\u3066\u3001\u304a\u8535\u5165\u308a\u306b\u306a\u3063\u3066\u3044\u305f\u3002\u3000MUSES 02 \u306f\u4e2d\u57df\u306e\u5bc6\u5ea6\u306e\u6fc3\u3055\u304c\u7279\u5fb4\u7684\u3067\u3001\u30dc\u30fc\u30ab\u30eb\u3082\u306e\u306f\u3088\u3044\u306e\u3060\u304c\u3001\u5927\u7de8\u6210\u306b\u306a\u308b\u3068\u3044\u307e\u3072\u3068\u3064\u3068\u3044\u3046\u5370\u8c61\u3092\u3082\u3063\u3066\u3044\u305f\u3002\u3000\u4f4e\u57df\u306e\u5f3e\u3080\u611f\u3058\u306f MUSES 05 \u306b\u5c11\u3057\u4f3c\u3066\u3044\u308b\u306e\u3067\u3001\u826f\u3044\u306e\u3067\u306f\u3068\u8003\u3048\u305f\u6b21\u7b2c\u3060\u3002\u3000\u8a66\u3057\u305f\u3068\u3053\u308d\u3001\u4eca\u56de\u306f\u30d9\u30b9\u30c8\u30de\u30c3\u30c1\u3068\u308f\u304b\u3063\u305f\u3002\u3000Unbalanced\u3001Balanced \u3068\u3082\u306b\u985e\u4f3c\u3057\u305f\u50be\u5411\u3068\u306a\u3063\u305f\u3002<\/p>\n\n\n\n<p>\u6700\u8fd1\u4f5c\u6210\u3057\u305f\u3001VFA-01 BTL\u30a2\u30f3\u30d7\u3001KT88\u5168\u6bb5\u5dee\u52d5\u30a2\u30f3\u30d7\u306f\u4f3c\u305f\u97f3\u8cea\u50be\u5411\u3068\u8ff0\u3079\u305f\u304c\u3001\u672c\u6a5f\u306f\u660e\u3089\u304b\u306b\u7570\u306a\u308b\u3002\u3000\u4f7f\u7528\u3059\u308b\u30aa\u30da\u30a2\u30f3\u30d7\u30fb\u30fb\u30fb\u7279\u306b V-Amp \u306e\u30aa\u30da\u30a2\u30f3\u30d7\u306b\u3088\u308b\u5f71\u97ff\u304c\u5927\u304d\u3044\u3002\u3000\u672c\u6a5f\u306f\u3001Class AA \u30d8\u30c3\u30c9\u30db\u30f3\u30a2\u30f3\u30d7\u3084\u30df\u30cb\u30ef\u30c3\u30bf\u30fc\u306e\u51fa\u529b\u5897\u5927\u3092\u76ee\u7684\u3068\u3057\u3066\u3044\u305f\u306e\u3060\u304c\u3001\u305d\u3046\u306f\u3044\u304b\u306a\u304b\u3063\u305f\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u3001\u672c\u6a5f\u306e\u88fd\u4f5c\u3092\u901a\u3058\u3066\u3001WaveGene\/WaveSpectra \u3067\u306e\u96d1\u97f3\u6b6a\u307f\u7387\u6e2c\u5b9a\u3084 Analog Discovery \u3067\u306e\u5468\u6ce2\u6570\u7279\u6027\u6e2c\u5b9a\u306e\u96e3\u3057\u3055\u3082\u611f\u3058\u305f\u3002\u3000\u3061\u3087\u3063\u3068\u3057\u305f\u914d\u7f6e\u306e\u5909\u66f4\u3067\u3001\u7279\u6027\u304c\u5909\u308f\u3063\u3066\u3057\u307e\u3046\u306e\u3060\u3002\u3000\u6e2c\u5b9a\u9650\u754c\u306b\u8fd1\u3044\u3068\u3053\u308d\u3067\u306e\u6e2c\u5b9a\u3067\u3042\u308b\u3053\u3068\u3082\u539f\u56e0\u304b\u3082\u3057\u308c\u306a\u3044\u3002\u3000\u771f\u7a7a\u7ba1\u30a2\u30f3\u30d7\u306e\u4f5c\u6210\u3067\u306f\u611f\u3058\u305f\u3053\u3068\u304c\u306a\u304b\u3063\u305f\u306e\u3067\u3001\u3088\u308a\u5e83\u5e2f\u57df\u3001\u3088\u308a\u4f4e\u6b6a\u3001\u4f4e\u96d1\u97f3\u306e\u534a\u5c0e\u4f53\u30a2\u30f3\u30d7\u306e\u305f\u3081\u304b\u3082\u3057\u308c\u306a\u3044\u3002\u3000\u30aa\u30fc\u30c7\u30a3\u30aa\u30a2\u30ca\u30e9\u30a4\u30b6\u304c\u6b32\u3057\u304f\u306a\u3063\u3066\u304d\u305f\u30fb\u30fb\u30fb\u3002<\/p>\n\n\n\n<p>\u3068\u308a\u3042\u3048\u305a\u3001\u3053\u308c\u3067\u5b8c\u6210\u3068\u3057\u3066\u304a\u304f\u304c\u3001\u307e\u3060\u307e\u3060\u6539\u826f\u306e\u4f59\u5730\u304c\u3042\u308b\u3068\u81ea\u899a\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u6700\u5f8c\u306b\u8ff0\u3079\u3066\u304a\u304d\u305f\u3044\u3002\u3000\u3044\u3064\u306e\u65e5\u304b\u3001\u518d\u30c1\u30e3\u30ec\u30f3\u30b8\u3092\u30fb\u30fb\u30fb<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Gain 20dB \u306e\u3068\u304d\u306e\u97f3\u304c\u826f\u304b\u3063\u305f\u3053\u3068\u3092\u305f\u3088\u308a\u306b\u3001NFB\u62b5\u6297\u3092\u5143\u306b\u623b\u3059\u3053\u3068\u306b\u3057\u305f\u3002\u3000\u4e0b\u56f3\u306eNFB\u62b5\u6297 10k\u03a9 \u306e\u3068\u3053\u308d\u3067\u3042\u308b\u3002\u3000\u3042\u304d\u3089\u3081\u305f\u7de8\u3067\u306f\u3001NFB\u62b5\u6297\u304c22k\u03a9\u306b\u306a\u3063\u3066\u3044\u305f\u3002 \u5de6\u30c1\u30e3\u30f3\u30cd\u30eb\u3067\u306f\u3001C1 = 2 &hellip; <a href=\"http:\/\/schumann.jp\/?p=1397\" class=\"more-link\">\u7d9a\u304d\u3092\u8aad\u3080 <span class=\"screen-reader-text\">Class AA \u30d1\u30ef\u30fc\u30a2\u30f3\u30d7\u306f\u5b9f\u73fe\u3067\u304d\u308b\u304b\u30fb\u30fb\u30fb\u306a\u3093\u3068\u304b\u3067\u304d\u305f\u7de8<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[199,10,38],"tags":[105,205,204],"_links":{"self":[{"href":"http:\/\/schumann.jp\/index.php?rest_route=\/wp\/v2\/posts\/1397"}],"collection":[{"href":"http:\/\/schumann.jp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/schumann.jp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/schumann.jp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/schumann.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1397"}],"version-history":[{"count":3,"href":"http:\/\/schumann.jp\/index.php?rest_route=\/wp\/v2\/posts\/1397\/revisions"}],"predecessor-version":[{"id":1406,"href":"http:\/\/schumann.jp\/index.php?rest_route=\/wp\/v2\/posts\/1397\/revisions\/1406"}],"wp:attachment":[{"href":"http:\/\/schumann.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1397"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/schumann.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1397"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/schumann.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1397"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}