{"id":2172,"date":"2022-11-25T23:33:42","date_gmt":"2022-11-25T14:33:42","guid":{"rendered":"https:\/\/www.kyu.kr\/?p=2172"},"modified":"2022-11-25T23:33:43","modified_gmt":"2022-11-25T14:33:43","slug":"el34-se-%ec%95%b0%ed%94%84%ec%9d%98-%ec%b4%88%eb%8b%a8%ea%b4%80-%ea%b5%90%ec%b2%b4-ecc81-12at7","status":"publish","type":"post","link":"https:\/\/www.kyu.kr\/?p=2172","title":{"rendered":"EL34 SE \uc570\ud504\uc758 \ucd08\ub2e8\uad00 \uad50\uccb4 (ECC81\/12AT7)"},"content":{"rendered":"
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\uc570\ub9cc\uc0ac \uce74\ud398\uc5d0 Mullard \uad6c\uad00 NOS\uac00 \uc62c\ub77c\uc628 \uac83\uc774 \uad6c\ubbf8\ub97c \uc790\uadf9\ud588\uc2b5\ub2c8\ub2e4<\/p>\n\n\n

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Miniwatt \ube0c\ub79c\ub4dc \ubbac\ub77c\ub4dc B \ucf54\ub4dc ECC81 NOS \ubbf8\uc0ac\uc6a9 \uc2e0\ud488. \ubbac\ub77c\ub4dc \ube14\ub799\ubc88 \uacf5\uc7a5 B \ucf54\ub4dc\uc758 \uc81c\ud488\uc73c\ub85c \ubbf8\ub2c8\uc640\ud2b8 \ub85c\uace0\ub85c \ub0a9\ud488 \ub41c \uac83\uc785\ub2c8\ub2e4\ub77c\ub294 \uc124\uba85\uacfc \ud568\uaed8 \uc62c\ub77c\uc654\uc2b5\ub2c8\ub2e4. ECC88\/6DJ8\/6N23P \ud639\uc740 ECC82\/12AU7\ubcf4\ub2e4 gain\uc774 \ud07d\ub2c8\ub2e4. \uc774\uac78 \uc4f0\uba74 \ucd9c\ub825\uc740 \uc904\uc5b4\ub4e4\uc9c0\ub9cc ECC88\/ECC82 \uc815\ub3c4\ub294 \uc544\ub2c8\uc5b4\uc11c \ub4b7\uc804\uc73c\ub85c \ubc00\ub824\ub09c EL34 SE \uc570\ud504\uc5d0 (\uba54\ud0c0\ubaa8\ub974) \uc0c8\ub85c\uc6b4 \uae30\uc6b4\uc744 \ub123\uc744 \uc218 \uc788\uc744 \uac83 \uac19\ub2e4\ub294 \uc0dd\uac01\uc744 \ud558\uac8c \ub418\uc5c8\uc2b5\ub2c8\ub2e4. \ubc14\ub85c \uad6c\uc785\ud588\uc2b5\ub2c8\ub2e4. ^^<\/p>\n\n\n\n

\uc6d0\ub798\ub294 \ud68c\ub85c \ubcc0\uacbd\uc5c6\uc774 \uadf8\ub0e5 \uad00\ub9cc \uad50\uccb4\ud558\ub824\uace0 \ud588\ub294\ub370 \uc570\ub9cc\uc0ac\uc758 \uace0\uc218\ub2d8\uaed8\uc11c \uc774 \uad00\uc740 ecc83\/12ax7 \ub300\ube44 \uba87 \ubc30 \ub9ce\uc740 \uc804\ub958\ub97c \ud758\ub824\uc918\uc57c \ub9de\ub294 \uad00\uc774\ub77c\uace0 \uc54c\ub824\uc8fc\uc154\uc11c \ub370\uc774\ud130\uc2dc\ud2b8\ub97c \ubcf4\ub2c8 typical \ud50c\ub808\uc774\ud2b8 \uc804\ub958\uac00 250V\uc5d0\uc11c 1.2mA vs. 10mA\ub85c 8\ubc30 \ub9ce\uc740 \uac83\uc744 \uc54c \uc218 \uc788\uc5c8\uc2b5\ub2c8\ub2e4. \uadf8\ub798\uc11c A-NFB \ud68c\ub85c \ubcc0\uacbd\uc744 \uc2dc\ub3c4\ud574\ubd24\ub294\ub370 \uc6cc\ub099 \uadfc\ubcf8\uc5c6\uc774 LTspice\ub9cc \ubbff\ub294 \ucc98\uc9c0\uc774\ub2e4 \ubcf4\ub2c8 \uc544\ub798 \ud68c\ub85c\ub85c \ub9cc\uc871\ud558\uae30\ub85c \ud588\uc2b5\ub2c8\ub2e4<\/p>\n\n\n

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\u200b<\/p>\n\n\n\n

metamor-A-NFB-ecc81<\/a>\ub2e4\uc6b4\ub85c\ub4dc<\/a><\/div>\n\n\n\n

LTspice \ud30c\uc77c\uc774 \ud544\uc694\ud558\uc2dc\uba74 \uc704\uc758 \ub9c1\ud06c\uc5d0\uc11c \ubc1b\uc544\uac00\uc2dc\uba74 \ub429\ub2c8\ub2e4.<\/p>\n\n\n\n

\uc704\uc640 \uac19\uc774 \ud68c\ub85c\ub97c \uc2dc\ubbac\ud574\ubcf4\ub2c8 R3\uc5d0\ub294 7.3mA, R9\uc5d0\ub294 2.4mA\uc5d0\uc11c 6.4mA\uae4c\uc9c0 \uc2a4\uc719\ud558\ub294 \uac83\uc744 \ubcfc \uc218 \uc788\uc5c8\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n

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0.6V \uc785\ub825\uc5d0\uc11c \uc57d 11\ubc30 \uc99d\ud3ed, THD\ub294 4.25%\uc785\ub2c8\ub2e4. \uc99d\ud3ed\uc774 \uc880 \uc791\uae30\ub294 \ud558\uc9c0\ub9cc \uc544\ud30c\ud2b8\uc5d0\uc11c\ub294 \ub118\uce5c\ub2e4\uace0 \uc0dd\uac01\ud569\ub2c8\ub2e4. \ucc38\uace0\ub85c \uc6d0\ub798 A-NFB \ud68c\ub85c\ub294 0.6V \uc785\ub825\uc5d0\uc11c \uc57d 18\ubc30 \uc99d\ud3ed, THD 7% \uc815\ub3c4\uc785\ub2c8\ub2e4<\/p>\n\n\n\n

FFT\ub294 \uc544\ub798\uc640 \uac19\uc774 \uc2dc\ubbac\ub418\uc5c8\uc2b5\ub2c8\ub2e4<\/p>\n\n\n

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\uc800\ub294 \ub85c\ub4dc\ub77c\uc778\uc73c\ub85c\ubd80\ud130 \ud68c\ub85c\ub97c \uadf8\ub9b4\uc904 \ubaa8\ub985\ub2c8\ub2e4. \ud558\uc9c0\ub9cc \uad6c\uc131\ub41c \ud68c\ub85c\uac00 \uc5b4\ub5a4 \ub85c\ub4dc\ub77c\uc778\uc744 \uac00\uc9c0\ub294\uc9c0 \uc54c\uace0 \uc2f6\uc5b4\uc11c \ub85c\ub4dc\ub77c\uc778 \uacc4\uc0b0\uae30\uc758 \ub3c4\uc6c0\uc744 \ubc1b\uc544\ubd24\uc2b5\ub2c8\ub2e4. \uc21c\uc11c\uac00 \ubc18\ub300\ub124\uc694. ^^ \ud604\uc7ac \ud68c\ub85c\uc758 \ub85c\ub4dc\ub77c\uc778\uc740 \uc544\ub798\uc640 \uac19\uc774 \ub418\ub294 \uac83 \uac19\uc2b5\ub2c8\ub2e4<\/p>\n\n\n

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\uc798 \ubaa8\ub974\uae34 \ud558\uc9c0\ub9cc \uaf64 \uc801\uc808\ud55c \ub3d9\uc791\uc810\uc744 \uc120\ud0dd\ud55c \uac83 \uac19\uc2b5\ub2c8\ub2e4. \ub0a9\ub55c\uc744 \ub05d\ub0b4\uace0 \uce21\uc815\uc744 \ud574\ubd24\ub294\ub370 \uc2dc\ubbac\ubcf4\ub2e4\ub294 \uc99d\ud3ed\uc774 \uc880 \uc791\uc740 \uac83\uc73c\ub85c \ub4dc\ub7ec\ub0ac\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n

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\"\"<\/figure>\n<\/div>\n\n
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\"\"<\/figure>\n<\/div>\n\n\n

\uacc4\uc18d \ub4e4\uc5b4\ubcf4\uace0 \uc788\ub294\ub370 \uc5b4\ub290 \uc21c\uac04 \uc18c\ub9ac\uac00 \ud3b4\uc9c0\uba74\uc11c \uc785\uac00\uc5d0 \ubbf8\uc18c\uac00 \uc9c0\uc5b4\uc9c0\ub294 \uc18c\ub9ac\uac00 \ub0a9\ub2c8\ub2e4. 300b SE \uc570\ud504\ub97c \ub9cc\ub4e4\uae30 \uc804\uae4c\uc9c0\ub294 5B\/255M SE \uc570\ud504\ub97c \uc81c\uce58\uace0 \uc8fc\ub825\uc774 \ub420 \uac83 \uac19\uc2b5\ub2c8\ub2e4. <\/p>\n","protected":false},"excerpt":{"rendered":"

\uc570\ub9cc\uc0ac \uce74\ud398\uc5d0 Mullard \uad6c\uad00 NOS\uac00 \uc62c\ub77c\uc628 \uac83\uc774 \uad6c\ubbf8\ub97c \uc790\uadf9\ud588\uc2b5\ub2c8\ub2e4 Miniwatt \ube0c\ub79c\ub4dc \ubbac\ub77c\ub4dc B \ucf54\ub4dc ECC81 NOS \ubbf8\uc0ac\uc6a9 \uc2e0\ud488. \ubbac\ub77c\ub4dc \ube14\ub799\ubc88 \uacf5\uc7a5 B \ucf54\ub4dc\uc758 \uc81c\ud488\uc73c\ub85c \ubbf8\ub2c8\uc640\ud2b8 \ub85c\uace0\ub85c \ub0a9\ud488 \ub41c \uac83\uc785\ub2c8\ub2e4\ub77c\ub294 \uc124\uba85\uacfc \ud568\uaed8 \uc62c\ub77c\uc654\uc2b5\ub2c8\ub2e4. ECC88\/6DJ8\/6N23P \ud639\uc740 ECC82\/12AU7\ubcf4\ub2e4 gain\uc774 \ud07d\ub2c8\ub2e4. \uc774\uac78 \uc4f0\uba74 \ucd9c\ub825\uc740 \uc904\uc5b4\ub4e4\uc9c0\ub9cc ECC88\/ECC82 \uc815\ub3c4\ub294 \uc544\ub2c8\uc5b4\uc11c \ub4b7\uc804\uc73c\ub85c \ubc00\ub824\ub09c EL34 SE \uc570\ud504\uc5d0 (\uba54\ud0c0\ubaa8\ub974) \uc0c8\ub85c\uc6b4 \uae30\uc6b4\uc744 \ub123\uc744 \uc218 \uc788\uc744 …
EL34 SE \uc570\ud504\uc758 \ucd08\ub2e8\uad00 \uad50\uccb4 (ECC81\/12AT7)<\/span> \ub354\ubcf4\uae30<\/a><\/p>\n","protected":false},"author":1,"featured_media":2173,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[108],"tags":[259,258,101,147,140],"class_list":["post-2172","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-108","tag-12at7","tag-ecc81","tag-el34","tag-mullard","tag-140"],"_links":{"self":[{"href":"https:\/\/www.kyu.kr\/index.php?rest_route=\/wp\/v2\/posts\/2172","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=2172"}],"version-history":[{"count":1,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=\/wp\/v2\/posts\/2172\/revisions"}],"predecessor-version":[{"id":2182,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=\/wp\/v2\/posts\/2172\/revisions\/2182"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=\/wp\/v2\/media\/2173"}],"wp:attachment":[{"href":"https:\/\/www.kyu.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2172"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2172"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2172"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}