{"id":1537,"date":"2025-11-02T09:00:44","date_gmt":"2025-11-02T09:00:44","guid":{"rendered":"http:\/\/schumann.jp\/?p=1537"},"modified":"2025-11-15T03:50:10","modified_gmt":"2025-11-15T03:50:10","slug":"12hg7-12gn7a-%e3%81%af%e3%83%a2%e3%83%8e%e3%81%ab%e3%81%aa%e3%82%8b%e3%81%8b%ef%bc%9f%e3%80%80%e8%a9%a6%e8%a1%8c%e9%8c%af%e8%aa%a4%e7%b7%a8","status":"publish","type":"post","link":"http:\/\/schumann.jp\/?p=1537","title":{"rendered":"12HG7\/12GN7A \u306f\u30e2\u30ce\u306b\u306a\u308b\u304b\uff1f\u3000\u8a66\u884c\u932f\u8aa4\u7de8"},"content":{"rendered":"\n<p>\u5b9f\u969b\u306b\u4f5c\u308a\u59cb\u3081\u3066\u3001\u3059\u3050\u306b\u60a9\u3093\u3060\u306e\u306f\u3001G3\/Shield \u96fb\u6975\u304c\u3075\u305f\u3064\u3042\u308b\u3053\u3068\u3002<a rel=\"noreferrer noopener\" href=\"http:\/\/tamsans.com\/myamp\/12HG7KNF.html\" target=\"_blank\">\u5148\u4eba\u306e\u56de\u8def\u56f3<\/a>\u306b\u4e21\u65b9\u3092\u30a2\u30fc\u30b9\u3059\u308b\u3088\u3046\u306b\u66f8\u304b\u308c\u3066\u304a\u308a\u3001\u672c\u4f5c\u3067\u306f\u3001MT\u30bd\u30b1\u30c3\u30c8\u306e\u4e2d\u5fc3\u30d4\u30f3\u3092\u30a2\u30fc\u30b9\u3068\u3057\u3066\u3001\u305d\u3053\u304b\u3089\u77ed\u8ddd\u96e2\u3067 G3\/Shield \u96fb\u6975\u3092\u3064\u306a\u3050\u3053\u3068\u306b\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u307e\u305a\u306f NFB \u3092\u304b\u3051\u305a\u306b\u6b63\u5f26\u6ce2\u3092\u3044\u308c\u3066\u307f\u305f\u3068\u3053\u308d\u3001\u76db\u5927\u306b\u767a\u632f\u3057\u3066\u3044\u305f\u3002\u3000\u767a\u632f\u5468\u6ce2\u6570\u306f 4MHz \u7a0b\u5ea6\u3002\u3000\u307e\u305a\u6700\u521d\u306b\u3001LM317 \u306b 0.01\u03bc \u306e\u30d1\u30b9\u30b3\u30f3\u3092\u5165\u308c\u305f\u3002\u30006AQ5\u5168\u6bb5\u5dee\u52d5\u306e\u3068\u304d\u306b\u3082<a href=\"http:\/\/schumann.jp\/?p=32\">\u3053\u306e\u30d1\u30b9\u30b3\u30f3\u304c\u5fc5\u8981<\/a>\u3067\u3042\u3063\u305f\u3002\u3000\u767a\u632f\u306f\u632f\u5e45\u304c\u5c0f\u3055\u304f\u306a\u3063\u305f\u306e\u307f\u3002\u3000\u524d\u5ddd\u3055\u3093\u306e <a href=\"http:\/\/za.ztv.ne.jp\/kygbncjy\/tubeamp\/EL821\/EL821CasComp.pdf\">EL821 CasComp \u5358\u6bb5\u5dee\u52d5\u30d7\u30c3\u30b7\u30e5\u30d7\u30eb\u30a2\u30f3\u30d7<\/a>\u306e\u89e3\u8aac\u306b\u3001\u300c\u30aa\u30da\u30a2\u30f3\u30d7\u306e\u4f4e\u3044\u51fa\u529b\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3067\u30b0\u30ea\u30c3\u30c9\u3092\u99c6\u52d5\u3059\u308b\u305f\u3081\u3001\u30df\u30e9\u30fc\u52b9\u679c\u304c\u751f\u3058\u306a\u3044\u300d\u3068\u3042\u308b\u3053\u3068\u304b\u3089\u3001\u30b0\u30ea\u30c3\u30c9\u306b\u767a\u632f\u6b62\u3081\u3092\u3044\u308c\u3066\u3044\u306a\u304b\u3063\u305f\u3002\u3000\u30b0\u30ea\u30c3\u30c9\u306e\u767a\u632f\u6b62\u3081\u3092\u3044\u308c\u308b\u3068\u3001\u76db\u5927\u306a\u767a\u632f\u306f\u6b62\u307e\u308b\u3082\u30011MHz \u5e2f\u3067\u306e\u5fae\u5f31\u306a\u767a\u632f\u304c\u307f\u3089\u308c\u305f\u3002\u3000\u5148\u4eba\u306e <a rel=\"noreferrer noopener\" href=\"http:\/\/blog.livedoor.jp\/machida_offkai\/95\/95_1_takama.pdf\" target=\"_blank\">12GN7 CSPP \u30a2\u30f3\u30d7<\/a>\u3067\u306f\u30d7\u30ec\u30fc\u30c8\u306b\u30d5\u30a7\u30e9\u30a4\u30c8\u30d3\u30fc\u30ba\u3092\u3044\u308c\u3066\u3044\u305f\u3053\u3068\u3092\u601d\u3044\u51fa\u3057\u3066\u3001\u864e\u306e\u5b50\u306e\u300c\u30a2\u30e2\u30d3\u30fc\u30ba\u300d\u3092\u3044\u308c\u3066\u307f\u305f\u3068\u3053\u308d\u3001\u3053\u306e\u767a\u632f\u3082\u6b62\u307e\u3063\u305f\u3002\u3000\u3053\u3053\u3067\u30a2\u30ca\u30ed\u30b0\u30c7\u30a3\u30b9\u30ab\u30d0\u30ea\u30fc\u3067\u5468\u6ce2\u6570\u7279\u6027\u3092\u6e2c\u5b9a\u3057\u305f\u3089\u30fb\u30fb\u30fb<\/p>\n\n\n\n<figure class=\"wp-block-image size-medium\"><a href=\"http:\/\/schumann.jp\/wp-content\/uploads\/2025\/11\/12HG7-ORG.png\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" width=\"800\" height=\"296\" src=\"http:\/\/schumann.jp\/wp-content\/uploads\/2025\/11\/12HG7-ORG-800x296.png\" alt=\"\" class=\"wp-image-1541\" srcset=\"http:\/\/schumann.jp\/wp-content\/uploads\/2025\/11\/12HG7-ORG-800x296.png 800w, http:\/\/schumann.jp\/wp-content\/uploads\/2025\/11\/12HG7-ORG-768x285.png 768w, http:\/\/schumann.jp\/wp-content\/uploads\/2025\/11\/12HG7-ORG-1536x569.png 1536w, http:\/\/schumann.jp\/wp-content\/uploads\/2025\/11\/12HG7-ORG.png 1808w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><figcaption>\u30af\u30ea\u30c3\u30af\u3067\u62e1\u5927<\/figcaption><\/figure>\n\n\n\n<p>\u9a5a\u304f\u306a\u304b\u308c\u3002\u30001MHz \u3067 \u30b2\u30a4\u30f3\u304c 0dB \u307e\u3067\u623b\u3063\u3066\u3044\u308b\u3067\u306f\u306a\u3044\u304b\u3002\u3000\u30a2\u30ca\u30ed\u30b0\u30c7\u30a3\u30b9\u30ab\u30d0\u30ea\u306e\u30c4\u30fc\u30eb\u30ad\u30c3\u30c8\u3067\u8abf\u3079\u3066\u307f\u308b\u3068\u30013\uff5e4MHz \u3067\u30013dB \u7a0b\u5ea6\u306e\u30b2\u30a4\u30f3\u304c\u3042\u308b\u3002\u3000\u3053\u306e\u307e\u307e\u3067\u306f\u3001\u3069\u3046\u8003\u3048\u3066\u3082 NFB \u3092\u304b\u3051\u308b\u3069\u3053\u308d\u3067\u306f\u306a\u3044\u3002\u3000<a href=\"http:\/\/za.ztv.ne.jp\/kygbncjy\/tubeamp\/EL821\/EL821CasComp.pdf\">EL821 CasComp \u5358\u6bb5\u5dee\u52d5\u30d7\u30c3\u30b7\u30e5\u30d7\u30eb\u30a2\u30f3\u30d7<\/a> \u3067\u72ed\u5e2f\u57df\u51fa\u529b\u30c8\u30e9\u30f3\u30b9\u3092\u4f7f\u3063\u3066\u3044\u305f\u306e\u306f\u3001\u5b89\u5b9a\u3057\u305f NFB \u306e\u305f\u3081\u3068\u306e\u3053\u3068\u3067\u3042\u3063\u305f\u306e\u306f\u3001\u307e\u3055\u306b\u3053\u308c\u304c\u7406\u7531\u3060\u3002<\/p>\n\n\n\n<p>\u3053\u3053\u3067\u3001\u79c1\u304c\u8003\u3048\u305f\u5bfe\u7b56\u306f\u7a4d\u5206\u88dc\u6b63\u3067\u3042\u308b\u3002\u3000\u30d7\u30ec\u30fc\u30c8 \u30fc \u30d7\u30ec\u30fc\u30c8\u9593\u306b CR \u3092\u3044\u308c\u3066\u5e2f\u57df\u5236\u9650\u3057\u3066\u307f\u308b\u8a66\u307f\u3060\u3002\u30002MHz \u3067 -3dB \u7a0b\u5ea6\u3042\u308c\u3070\u3044\u3044\u3060\u308d\u3046\u3068\u8003\u3048\u30013k\u03a9 &#8211; 22pF \u3067\u8a66\u307f\u305f\u3068\u3053\u308d\u3001\u5468\u6ce2\u6570\u7279\u6027\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u3063\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-medium\"><a href=\"http:\/\/schumann.jp\/wp-content\/uploads\/2025\/11\/a11d322e9d2491b6608c7bd47ca2ab37.png\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" width=\"800\" height=\"301\" src=\"http:\/\/schumann.jp\/wp-content\/uploads\/2025\/11\/a11d322e9d2491b6608c7bd47ca2ab37-800x301.png\" alt=\"\" class=\"wp-image-1542\" srcset=\"http:\/\/schumann.jp\/wp-content\/uploads\/2025\/11\/a11d322e9d2491b6608c7bd47ca2ab37-800x301.png 800w, http:\/\/schumann.jp\/wp-content\/uploads\/2025\/11\/a11d322e9d2491b6608c7bd47ca2ab37-768x289.png 768w, http:\/\/schumann.jp\/wp-content\/uploads\/2025\/11\/a11d322e9d2491b6608c7bd47ca2ab37-1536x577.png 1536w, http:\/\/schumann.jp\/wp-content\/uploads\/2025\/11\/a11d322e9d2491b6608c7bd47ca2ab37.png 1798w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><figcaption>\u30af\u30ea\u30c3\u30af\u3067\u62e1\u5927<\/figcaption><\/figure>\n\n\n\n<p>\u898b\u6163\u308c\u305f\u611f\u3058\u306e\u5468\u6ce2\u6570\u7279\u6027\u30fb\u4f4d\u76f8\u7279\u6027\u306b\u306a\u3063\u3066\u304d\u305f\u3002\u3000\u3053\u308c\u3067\u3044\u3051\u308b\u3060\u308d\u3046\u304b\uff1f<\/p>\n\n\n\n<p class=\"has-text-align-right\"><em>to be continued\u2026<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b9f\u969b\u306b\u4f5c\u308a\u59cb\u3081\u3066\u3001\u3059\u3050\u306b\u60a9\u3093\u3060\u306e\u306f\u3001G3\/Shield \u96fb\u6975\u304c\u3075\u305f\u3064\u3042\u308b\u3053\u3068\u3002\u5148\u4eba\u306e\u56de\u8def\u56f3\u306b\u4e21\u65b9\u3092\u30a2\u30fc\u30b9\u3059\u308b\u3088\u3046\u306b\u66f8\u304b\u308c\u3066\u304a\u308a\u3001\u672c\u4f5c\u3067\u306f\u3001MT\u30bd\u30b1\u30c3\u30c8\u306e\u4e2d\u5fc3\u30d4\u30f3\u3092\u30a2\u30fc\u30b9\u3068\u3057\u3066\u3001\u305d\u3053\u304b\u3089\u77ed\u8ddd\u96e2\u3067 G3\/Shield \u96fb\u6975\u3092 &hellip; <a href=\"http:\/\/schumann.jp\/?p=1537\" class=\"more-link\">\u7d9a\u304d\u3092\u8aad\u3080 <span class=\"screen-reader-text\">12HG7\/12GN7A \u306f\u30e2\u30ce\u306b\u306a\u308b\u304b\uff1f\u3000\u8a66\u884c\u932f\u8aa4\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":[211,214,10,3],"tags":[213],"_links":{"self":[{"href":"http:\/\/schumann.jp\/index.php?rest_route=\/wp\/v2\/posts\/1537"}],"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=1537"}],"version-history":[{"count":4,"href":"http:\/\/schumann.jp\/index.php?rest_route=\/wp\/v2\/posts\/1537\/revisions"}],"predecessor-version":[{"id":1568,"href":"http:\/\/schumann.jp\/index.php?rest_route=\/wp\/v2\/posts\/1537\/revisions\/1568"}],"wp:attachment":[{"href":"http:\/\/schumann.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1537"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/schumann.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1537"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/schumann.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1537"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}