{"id":3075,"date":"2023-10-15T20:10:18","date_gmt":"2023-10-15T11:10:18","guid":{"rendered":"https:\/\/www.kyu.kr\/?p=3075"},"modified":"2023-10-15T20:10:18","modified_gmt":"2023-10-15T11:10:18","slug":"mullard-3-3-%ec%a0%9c%ec%9e%91","status":"publish","type":"post","link":"https:\/\/www.kyu.kr\/?p=3075","title":{"rendered":"Mullard 3-3 \uc81c\uc791"},"content":{"rendered":"\n<p>\uc774\uc804 \uae00\uc5d0\uc11c Mullard \uadf8\ub9b0\ubd81\uc5d0 \ub098\uc628 3W SE \uc2dc\ubbac\uc744 \uc62c\ub838\uc5c8\ub294\ub370 \uc774 \ud68c\ub85c\uac00 diyaudio \ub4f1\uc5d0\uc11c\ub294 Mullard 3-3\uc774\ub77c\ub294 \uc774\ub984\uc73c\ub85c \ubd88\ub9ac\uace0 \uc788\ub354\uad70\uc694. \uc544\ubb34\ud2bc \uc2dc\ubbac\uc744 \ub3cc\ub824\ubcf8 \uc774\uc720\ub294 \ub9cc\ub4e4\uc5b4\ubcf4\ub824\uace0 \ub3cc\ub824\ubd24\uae30 \ub54c\ubb38\uc5d0 \uc5b4\uc81c\ubd80\ud130 \ub9cc\ub4e4\uc5c8\uc2b5\ub2c8\ub2e4. PCB \ub9cc\ub4dc\ub294\ub370 \ubbf8\uccd0\uc11c \uc18c\ud615 \ub7ec\uadf8 \ubcf4\ub4dc\ub3c4 \ub9cc\ub4e4\uc5c8\ub294\ub370 \uc774\uac8c \uc774 \ud68c\ub85c\uc5d0 \ub531\uc785\ub2c8\ub2e4. \uadf8\ub798\uc11c \uc774 PCB\ub97c \uc37c\uc2b5\ub2c8\ub2e4. <\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-medium\"><img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"800\" src=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/20231015_190143-450x800.jpg\" alt=\"\" class=\"wp-image-3077\" srcset=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/20231015_190143-450x800.jpg 450w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/20231015_190143-1215x2160.jpg 1215w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/20231015_190143-84x150.jpg 84w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/20231015_190143-768x1365.jpg 768w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/20231015_190143-864x1536.jpg 864w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/20231015_190143-1152x2048.jpg 1152w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/20231015_190143-scaled.jpg 1440w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/figure>\n<\/div>\n\n\n<p>\ud558\uc9c0\ub9cc, \uc544\ubb34 \uc2e0\ud638\ub3c4 \uc548 \ub098\uc624\uace0 \uc2dc\uc815\uc218\ub3c4 \uc774\uc0c1\ud558\uac8c \uce21\uc815\uc774 \ub418\uc5b4\uc11c \ud55c\ub098\uc808\uc744 \uace0\ubbfc\ud588\uc2b5\ub2c8\ub2e4.  \uad6c\uae00\uc2e0\ub9cc \ubd99\uc7a1\uace0 \uac80\uc0c9\uc744 \ud588\ub294\ub370, \uadf8 \ub54c\ubb38\uc5d0 \uba87\uac00\uc9c0 \uc0ac\uc2e4\uc744 \ub354 \uc54c\uac8c \ub418\uc5c8\ub294\ub370\uc694, \uc774 \ud68c\ub85c\ub97c \uc0b4\uc9dd \uc218\uc815\ud55c \uac83\uc744 BBC\uac00 \uc0ac\uc6a9\ud588\ub354\uad70\uc694. \ud68c\ub85c\ub3c4\uac00 \ub4e4\uc5b4 \uc788\ub294 \uc124\uba85\uc11c\ub3c4 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/AM8_2.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"AM8_2\uc758 \uc0bd\uc785.\"><\/object><a id=\"wp-block-file--media-ec1b9f6e-8548-482f-b091-62f7cde961bd\" href=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/AM8_2.pdf\">AM8_2<\/a><a href=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/AM8_2.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-ec1b9f6e-8548-482f-b091-62f7cde961bd\">\ub2e4\uc6b4\ub85c\ub4dc<\/a><\/div>\n\n\n\n<p>\ubcf4\uba74 \ud070 \ucc28\uc774\ub294 \uc5c6\uc774 \uadf8\ub0e5 \uc774\ub984\ub9cc AM8\/2\ub85c \ubc14\ub010 \uac83\uacfc \ube44\uc2b7\ud55c\ub370 3\uc634 \uc2a4\ud53c\ucee4\ub97c \ub300\uc0c1\uc73c\ub85c \ud55c \ud68c\ub85c\uc774\uace0 OPT\uac00 46.1:1 \uad8c\uc120\ube44\ub77c\uba74 \uc774\uac8c \uc784\ud53c\ub358\uc2a4\uac00 \uc5bc\ub9c8\uc778\uc9c0&#8230; (3 x 46.1 = \uc57d 125\uc634 1\ucc28 \uc784\ud53c\ub358\uc2a4\ub294 \uc544\ub2c8\uaca0\uc9c0\uc694&#8230;?) \uc544\ubb34\ud2bc 8\uc634 \uc2a4\ud53c\ucee4\uc640 5K OPT\uc640 \ub9de\uc9c0 \uc54a\uae30 \ub54c\ubb38\uc5d0 \uc811\uc5c8\uace0 \uadf8 \ub2e4\uc74c\uc5d0 \uc788\ub294 AM8\/2A \ud68c\ub85c\ub294 \uc9c1\uacb0\uc774 \uc544\ub2c8\uace0 \ucee4\ud50c\ub9c1\uc774 \uc0ac\uc6a9\ub418\uc5b4\uc11c \uc2dc\ub3c4\ud574\ubcf4\uc9c0 \uc54a\uc558\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1215\" height=\"2160\" src=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/20231015_193850-1215x2160.jpg\" alt=\"\" class=\"wp-image-3078\" srcset=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/20231015_193850-1215x2160.jpg 1215w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/20231015_193850-450x800.jpg 450w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/20231015_193850-84x150.jpg 84w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/20231015_193850-768x1365.jpg 768w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/20231015_193850-864x1536.jpg 864w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/20231015_193850-1152x2048.jpg 1152w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/20231015_193850-scaled.jpg 1440w\" sizes=\"auto, (max-width: 1215px) 100vw, 1215px\" \/><\/figure>\n<\/div>\n\n\n<p>\uadf8\ub7f0\ub370 \ubaa8\ub4e0 \ubc30\uc120\uc744 PCB \ubc11\uc5d0 \ud588\uae30 \ub54c\ubb38\uc5d0 \ubaa8\ub974\uace0 \uc788\ub358 \uc2e4\uc218\ub97c \ucc3e\uc558\uc2b5\ub2c8\ub2e4. \ucd08\ub2e8 \ud50c\ub808\uc774\ud2b8\uc640 \ucd9c\ub825 \uadf8\ub9ac\ub4dc \uc0ac\uc774\uc758 \ubc30\uc120\uc744 \uc548 \ud588&#8230; \u3160\u3160 \uc704\uc758 \uc0ac\uc9c4\uc5d0\uc11c \ucd08\ub2e8 6\ubc88\ud540\uc5d0 \uc5f0\uacb0\ub41c \ud30c\ub780\uc0c9 \uc120\uc774 \ube60\uc838 \uc788\uc5c8\uc2b5\ub2c8\ub2e4. \uc5f0\uacb0\ud558\uace0 \uc2dc\uc815\uc218\ub97c \uce21\uc815\ud574 \ubd05\ub2c8\ub2e4.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1571\" height=\"1261\" src=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/image-17.png\" alt=\"\" class=\"wp-image-3080\" srcset=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/image-17.png 1571w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/image-17-800x642.png 800w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/image-17-150x120.png 150w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/image-17-768x616.png 768w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/image-17-1536x1233.png 1536w\" sizes=\"auto, (max-width: 1571px) 100vw, 1571px\" \/><\/figure>\n<\/div>\n\n\n<p>\uc6d0\ub798 \ud68c\ub85c\ub3c4\uc5d0\uc11c \uba87 \uad70\ub370\ub97c \ubc14\uafe8\uc2b5\ub2c8\ub2e4. R9\ub294 10\uba54\uac00\uc5d0\uc11c 1\uba54\uac00, R2\ub294 1\uba54\uac00\uc5d0\uc11c 470K, R1\uc740 100\uc634\uc5d0\uc11c 1K, R6\uc740 3.9K\uc5d0\uc11c 2.2K, 25uF\uc740 33uF, 0.25uF\uc740 0.15uF, 50uF\uc740 47uF, \uc774\ub7f0 \uc2dd\uc785\ub2c8\ub2e4. \uac00\uc7a5 \ud070 \ubcc0\ud654\ub294 R4\uac00 560\uc634\uc5d0\uc11c 500\uc634\uc73c\ub85c \ubc14\ub00c\uc5c8\ub294\ub370 \uc774\uac74 \uc21c\uc804\ud788 \ubd80\ud488\ud1b5\uc5d0 560\uc774 \uc5c6\uc5c8\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. 500\uc634\uc740 \ucc9c\uc77c\uc804\uc790 50uF \uc544\ub798 \uc228\uc5b4 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p> \uc704\uc758 \uadf8\ub9bc\uc5d0\uc11c &#8220;10.6\/9.8V&#8221;\ucc98\ub7fc \uacb9\ub530\uc634\ud45c \uc548\uc5d0 \uac12\uc740 \ub9cc\ub4e0 \ud68c\ub85c\uc5d0\uc11c \uce21\uc815\ud55c \uac12, \uadf8 \ubc11\uc5d0 \uc788\ub294 20V\ub294 LTspice\uac00 \uc2dc\ubbac\ub808\uc774\uc158\ud55c \uac12\uc73c\ub85c \ubcf4\uc2dc\uba74 \ub429\ub2c8\ub2e4. R1\/R2\ub97c \ubc14\uafbc \uc774\uc720\ub294 \uc774\uac83\uc774 input sensitivity\ub97c \uc644\ud654\uc2dc\ucf1c\uc8fc\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. \uce21\uc815\ud574\ubcf4\ub2c8 \uc2e4\uc81c \uadf8\ub807\uac8c \ub3d9\uc791\ud569\ub2c8\ub2e4.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"503\" src=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/scope_480.png\" alt=\"\" class=\"wp-image-3081\" srcset=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/scope_480.png 800w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/scope_480-150x94.png 150w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/scope_480-768x483.png 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n<\/div>\n\n\n<p> \uc6d0\ub798 \ud68c\ub85c\ub294 0.1Vrms \uc785\ub825\uc5d0\uc11c 3W \ucd9c\ub825\uc744 \uc5bb\ub3c4\ub85d \ud558\uace0 \uc788\uc9c0\ub9cc \uc704\uc640 \uac19\uc774 1Vpp \uc785\ub825\uc5d0\uc11c 3W \uc815\ub3c4\ub97c \uc5bb\uc5b4\uc11c \ubcfc\ub968 \uc870\uc808\uc774 \ub354 \uc5ec\uc720\ub86d\uc2b5\ub2c8\ub2e4. <\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"503\" src=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/scope_479.png\" alt=\"\" class=\"wp-image-3082\" srcset=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/scope_479.png 800w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/scope_479-150x94.png 150w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/scope_479-768x483.png 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n<\/div>\n\n\n<p>THD\ub294 \uc548 \uc7ac\ubd24\ub294\ub370 -60dB \ubc30\uc74c \ud06c\uae30\ub97c \ubcf4\uba74 \ub0ae\uc744 \uac83\uc73c\ub85c \ubcf4\uc785\ub2c8\ub2e4.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"503\" src=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/scope_481.png\" alt=\"\" class=\"wp-image-3083\" srcset=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/scope_481.png 800w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/scope_481-150x94.png 150w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/10\/scope_481-768x483.png 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n<\/div>\n\n\n<p>FRA\ub294 \uadf8\ub0e5 \ud0f1\uace0 U-608 OPT\uc758 \ud2b9\uc131\uc785\ub2c8\ub2e4. \ucd08\uace0\uc5ed\uc5d0\uc11c ringing \uc0dd\uae30\uace0 100K \ub118\uc5b4\uac00\uba74 \uc704\uc0c1 \ubc18\uc804 \uc0dd\uae30\uace0 \uadf8\ub807\uc2b5\ub2c8\ub2e4. \uc18c\ub9ac\ub97c \ub4e4\uc5b4\ubcf4\ub2c8 \uc18c\ub9ac\ub3c4 \uc88b\uae34 \ud55c\ub370 \ud0f1\uace0 U-608 \uc720\ub2c8\ubc84\uc124 OPT\ub85c \ub4e4\uc5c8\ub358 \uc18c\ub9ac \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uc774\uc804 \uae00\uc5d0\uc11c Mullard \uadf8\ub9b0\ubd81\uc5d0 \ub098\uc628 3W SE \uc2dc\ubbac\uc744 \uc62c\ub838\uc5c8\ub294\ub370 \uc774 \ud68c\ub85c\uac00 diyaudio \ub4f1\uc5d0\uc11c\ub294 Mullard 3-3\uc774\ub77c\ub294 \uc774\ub984\uc73c\ub85c \ubd88\ub9ac\uace0 \uc788\ub354\uad70\uc694. \uc544\ubb34\ud2bc \uc2dc\ubbac\uc744 \ub3cc\ub824\ubcf8 \uc774\uc720\ub294 \ub9cc\ub4e4\uc5b4\ubcf4\ub824\uace0 \ub3cc\ub824\ubd24\uae30 \ub54c\ubb38\uc5d0 \uc5b4\uc81c\ubd80\ud130 \ub9cc\ub4e4\uc5c8\uc2b5\ub2c8\ub2e4. PCB \ub9cc\ub4dc\ub294\ub370 \ubbf8\uccd0\uc11c \uc18c\ud615 \ub7ec\uadf8 \ubcf4\ub4dc\ub3c4 \ub9cc\ub4e4\uc5c8\ub294\ub370 \uc774\uac8c \uc774 \ud68c\ub85c\uc5d0 \ub531\uc785\ub2c8\ub2e4. \uadf8\ub798\uc11c \uc774 PCB\ub97c \uc37c\uc2b5\ub2c8\ub2e4. \ud558\uc9c0\ub9cc, \uc544\ubb34 \uc2e0\ud638\ub3c4 \uc548 \ub098\uc624\uace0 \uc2dc\uc815\uc218\ub3c4 \uc774\uc0c1\ud558\uac8c \uce21\uc815\uc774 \ub418\uc5b4\uc11c \ud55c\ub098\uc808\uc744 \uace0\ubbfc\ud588\uc2b5\ub2c8\ub2e4. \uad6c\uae00\uc2e0\ub9cc \ubd99\uc7a1\uace0 &hellip;<br \/><a href=\"https:\/\/www.kyu.kr\/?p=3075\" class=\"more-link pen_button pen_element_default pen_icon_arrow_double\"><span class=\"screen-reader-text\">Mullard 3-3 \uc81c\uc791<\/span> \ub354\ubcf4\uae30<\/a><\/p>\n","protected":false},"author":1,"featured_media":3077,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[108],"tags":[406,377,438,382],"class_list":["post-3075","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-108","tag-ef86","tag-el84","tag-mullard-3-3","tag-tango-u-608"],"_links":{"self":[{"href":"https:\/\/www.kyu.kr\/index.php?rest_route=\/wp\/v2\/posts\/3075","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kyu.kr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kyu.kr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3075"}],"version-history":[{"count":1,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=\/wp\/v2\/posts\/3075\/revisions"}],"predecessor-version":[{"id":3084,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=\/wp\/v2\/posts\/3075\/revisions\/3084"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=\/wp\/v2\/media\/3077"}],"wp:attachment":[{"href":"https:\/\/www.kyu.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3075"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3075"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3075"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}