{"id":147319,"date":"2024-04-27T13:51:56","date_gmt":"2024-04-27T13:51:56","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%ed%94%84%eb%a6%ac%ec%95%b0%ed%94%84\/"},"modified":"2024-04-27T13:51:57","modified_gmt":"2024-04-27T13:51:57","slug":"%ed%94%84%eb%a6%ac%ec%95%b0%ed%94%84","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ko\/%ed%94%84%eb%a6%ac%ec%95%b0%ed%94%84\/","title":{"rendered":"\ud504\ub9ac\uc570\ud504"},"content":{"rendered":"<p class=\"sidekick\">\ud504\ub9ac\uc570\ud504\ub294 \uc2e0\ud638\ub97c \uc99d\ud3ed\uc2dc\ucf1c \uc804\ub825 \uc99d\ud3ed\uae30\ub85c \ubcf4\ub0b4\ub294 \uc911\uc694\ud55c \uc624\ub514\uc624 \uc7a5\uce58\uc774\uba70, \uc804\uc790\uae30 \uc6d0\ub9ac\ub97c \uc774\uc6a9\ud574 \uc791\ub3d9\ud569\ub2c8\ub2e4.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.electricity-magnetism.org\/wp-content\/uploads\/2024\/04\/\ud504\ub9ac\uc570\ud504.png\" alt=\"\ud504\ub9ac\uc570\ud504\"\/><\/p>\n<h2>\ud504\ub9ac\uc570\ud504\uc758 \uae30\ubcf8 \uc774\ud574<\/h2>\n<p>\ud504\ub9ac\uc570\ud504(pre-amplifier)\ub294 \uc2e0\ud638\ub97c \uc99d\ud3ed\ud558\ub294 \uc7a5\uce58\ub85c, \uc18c\ub9ac\ub098 \uc804\uae30 \uc2e0\ud638\ub97c \uc99d\ud3ed\ud558\uc5ec \uc804\ub825 \uc99d\ud3ed\uae30(power amplifier)\ub85c \ubcf4\ub0b4\uae30 \uc804\uc5d0 \ucd08\uae30 \ub2e8\uacc4\uc5d0\uc11c \ucc98\ub9ac\ud569\ub2c8\ub2e4. \uc624\ub514\uc624 \uc2dc\uc2a4\ud15c, \ub77c\ub514\uc624, \ud154\ub808\ube44\uc804, \uadf8\ub9ac\uace0 \uae30\ud0c0 \uc804\uc790 \uc7a5\ube44\uc5d0\uc11c \ud575\uc2ec\uc801\uc778 \uc5ed\ud560\uc744 \ud558\ub294 \ud504\ub9ac\uc570\ud504\ub294 \uc2e0\ud638\uc758 \uc9c8\uc744 \uacb0\uc815\uc9d3\ub294 \uc911\uc694\ud55c \uc694\uc18c\uc785\ub2c8\ub2e4.<\/p>\n<h2>\ud504\ub9ac\uc570\ud504\uc758 \uc5ed\ud560\uacfc \uc911\uc694\uc131<\/h2>\n<p>\ud504\ub9ac\uc570\ud504\uc758 \uc8fc\ub41c \ubaa9\uc801\uc740 \ub9e4\uc6b0 \uc57d\ud55c \uc2e0\ud638\ub97c \uc99d\ud3ed\uc2dc\ucf1c \ud6c4\uc18d \ub2e8\uacc4\uc758 \uc7a5\uce58\ub4e4\uc774 \ucc98\ub9ac\ud560 \uc218 \uc788\ub294 \uc218\uc900\uc73c\ub85c \ub9cc\ub4dc\ub294 \uac83\uc785\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \ub9c8\uc774\ud06c\ub85c\ud3f0\uc774\ub098 \uae30\ud0c0 \ud53d\uc5c5\uacfc \uac19\uc740 \ubcc0\ud658\uae30(transducer)\ub85c\ubd80\ud130 \ub098\uc624\ub294 \uc2e0\ud638\ub294 \ubcf4\ud1b5 \ub9e4\uc6b0 \uc57d\ud558\uae30 \ub54c\ubb38\uc5d0 \uc9c1\uc811\uc801\uc73c\ub85c \uc2a4\ud53c\ucee4\ub97c \ud1b5\ud574 \uc18c\ub9ac\ub97c \ub0bc \uc218 \uc5c6\uc2b5\ub2c8\ub2e4. \uc774\ub54c \ud504\ub9ac\uc570\ud504\uac00 \ud544\uc694\ud55c\ub370, \uc2e0\ud638\ub97c \ucda9\ubd84\ud788 \uc99d\ud3ed\uc2dc\ucf1c \uc804\ub825 \uc99d\ud3ed\uae30\uac00 \uc0ac\uc6a9\ud560 \uc218 \uc788\uac8c \ud569\ub2c8\ub2e4. \uc774 \uacfc\uc815\uc740 \ucd5c\uc885 \ucd9c\ub825\uc774 \uae68\ub057\ud558\uace0 \uc65c\uace1\uc774 \uc5c6\ub3c4\ub85d \uc911\uc694\ud569\ub2c8\ub2e4.<\/p>\n<h2>\ud504\ub9ac\uc570\ud504\uc758 \uae30\ubcf8 \ud68c\ub85c<\/h2>\n<p>\ud504\ub9ac\uc570\ud504\uc758 \ud68c\ub85c \uc124\uacc4\ub294 \ud2b8\ub79c\uc9c0\uc2a4\ud130\ub098 \uc9c4\uacf5\uad00 \uac19\uc740 \uc99d\ud3ed\uc18c\uc790\ub97c \uae30\ubc18\uc73c\ub85c \ud569\ub2c8\ub2e4. \ub300\ubd80\ubd84\uc758 \ud504\ub9ac\uc570\ud504\ub294 \uc785\ub825 \ub2e8\uacc4, \uc99d\ud3ed \ub2e8\uacc4, \uadf8\ub9ac\uace0 \ucd9c\ub825 \ub2e8\uacc4\ub77c\ub294 \uc138 \ubd80\ubd84\uc73c\ub85c \uad6c\uc131\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4. \uc785\ub825 \ub2e8\uacc4\uc5d0\uc11c\ub294 \uc2e0\ud638\uac00 \ucc98\uc74c\uc73c\ub85c \uc99d\ud3ed\uae30\uc5d0 \ub4e4\uc5b4\uac00\uc11c \ub178\uc774\uc988 \ud544\ud130\ub9c1\uc774 \uc774\ub8e8\uc5b4\uc9c0\uba70, \uc99d\ud3ed \ub2e8\uacc4\uc5d0\uc11c \uc2e0\ud638\uac00 \uc2e4\uc81c\ub85c \uc99d\ud3ed\ub429\ub2c8\ub2e4. \ucd5c\uc885\uc801\uc73c\ub85c \ucd9c\ub825 \ub2e8\uacc4\ub97c \uac70\uccd0 \uc99d\ud3ed\ub41c \uc2e0\ud638\uac00 \uc678\ubd80 \uc7a5\uce58\ub85c \uc804\uc1a1\ub429\ub2c8\ub2e4.<\/p>\n<ul>\n<li><strong>\uc785\ub825 \uc784\ud53c\ub358\uc2a4:<\/strong> \ud504\ub9ac\uc570\ud504\ub294 \ub192\uc740 \uc785\ub825 \uc784\ud53c\ub358\uc2a4(input impedance)\ub97c \uac00\uc838 \uc2e0\ud638\uc6d0\uc5d0 \uac70\uc758 \ubd80\ud558\ub97c \uc8fc\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/li>\n<li><strong>\uc99d\ud3ed\ub960:<\/strong> \uc99d\ud3ed\ub960(gain)\uc740 \uc785\ub825 \uc2e0\ud638\uc758 \ub808\ubca8\uc744 \uc5bc\ub9c8\ub098 \ub192\uc77c \uc218 \uc788\ub294\uc9c0\ub97c \ub098\ud0c0\ub0b4\uba70, \uc77c\ubc18\uc801\uc73c\ub85c \ub370\uc2dc\ubca8(db)\ub85c \ud45c\ud604\ub429\ub2c8\ub2e4.<\/li>\n<li><strong>\ub178\uc774\uc988 \uac10\uc18c:<\/strong> \ud504\ub9ac\uc570\ud504 \ud68c\ub85c\ub294 \ub178\uc774\uc988\ub97c \ucd5c\uc18c\ud654\ud558\ub3c4\ub85d \uc124\uacc4\ub418\uc5b4 \uc788\uc5b4\uc57c \ud558\uba70, \uc774\ub294 \uc2e0\ud638 \ub300 \ub178\uc774\uc988 \ube44\uc728(S\/N ratio)\ub85c \uce21\uc815\ub429\ub2c8\ub2e4.<\/li>\n<\/ul>\n<h2>\ud504\ub9ac\uc570\ud504\uc640 \uc804\uae30\uc640\uc758 \uad00\uacc4<\/h2>\n<p>\uc804\uae30\uc640 \uc790\uae30\ub294 \uc11c\ub85c \ubc00\uc811\ud55c \uad00\uacc4\ub97c \uac16\uace0 \uc788\uc73c\uba70, \uc774\ub294 \ud504\ub9ac\uc570\ud504 \uc791\ub3d9 \uc6d0\ub9ac\uc5d0\uc11c\ub3c4 \ub098\ud0c0\ub0a9\ub2c8\ub2e4. \ud504\ub9ac\uc570\ud504 \uc548\uc758 \uc804\uc790 \ubd80\ud488\ub4e4\uc740 \uc804\uae30 \uc2e0\ud638\uc758 \ubcc0\ud654\ub97c \uc774\uc6a9\ud558\uc5ec \uc2e0\ud638\ub97c \uc99d\ud3ed\ud569\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \ud2b8\ub79c\uc9c0\uc2a4\ud130\ub294 \uc791\uc740 \uc804\ub958 \ubcc0\ud654\ub97c \uc870\uc808\ud558\uc5ec \ub354 \ud070 \uc804\ub958\ub85c \ud655\ub300\uc2dc\ud0ac \uc218 \uc788\ub294 \uc131\uc9c8\uc744 \uac00\uc9c0\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>\ud504\ub9ac\uc570\ud504\uc5d0\uc11c \uace0\ub824\ud574\uc57c \ud560 \uc694\uc18c<\/h2>\n<p>\ud504\ub9ac\uc570\ud504\ub97c \uc120\ud0dd\ud558\uac70\ub098 \uc124\uacc4\ud560 \ub54c, \ub2e4\uc74c\uacfc \uac19\uc740 \uc694\uc18c\ub4e4\uc744 \uace0\ub824\ud574\uc57c \ud569\ub2c8\ub2e4:<\/p>\n<ol>\n<li><strong>\ud638\ud658\uc131:<\/strong> \ud504\ub9ac\uc570\ud504\ub294 \uc5f0\uacb0\ub41c \ubaa8\ub4e0 \uc7a5\uce58\uc640\uc758 \ud638\ud658\uc131\uc744 \uac00\uc838\uc57c \ud569\ub2c8\ub2e4.<\/li>\n<li><strong>\uc124\uc815 \uc870\uc815:<\/strong> \uc0ac\uc6a9\uc790\uac00 \uc6d0\ud558\ub294 \uc18c\ub9ac\ub97c \ucd94\uad6c\ud560 \uc218 \uc788\ub3c4\ub85d \ubca0\uc774\uc2a4, \ud2b8\ub808\ube14 \uc870\uc815\uacfc \uac19\uc740 \uae30\ub2a5\uc744 \uc81c\uacf5\ud574\uc57c \ud569\ub2c8\ub2e4.<\/li>\n<li><strong>\ucd9c\ub825 \ud488\uc9c8:<\/strong> \ucd5c\uc885\uc801\uc778 \ucd9c\ub825\uc758 \ud488\uc9c8\uc740 \ud504\ub9ac\uc570\ud504\uc758 \uc131\ub2a5\uc744 \ud3c9\uac00\ud558\ub294 \uc911\uc694\ud55c \uae30\uc900\uc785\ub2c8\ub2e4.<\/li>\n<\/ol>\n<p>\ud504\ub9ac\uc570\ud504\ub294 \ubcf5\uc7a1\ud55c \uc804\uc790 \uae30\uae30\uc5d0\uc11c \uac04\uacfc\ud558\uae30 \uc26c\uc6b4 \uc694\uc18c\uc77c \uc218 \uc788\uc9c0\ub9cc, \uc804\uccb4 \uc2dc\uc2a4\ud15c\uc758 \uc131\ub2a5\uc5d0 \uacb0\uc815\uc801\uc778 \uc5ed\ud560\uc744 \ud558\uba70, \uc804\uae30\uc640 \uc790\uae30 \uc6d0\ub9ac\ub97c \ud65c\uc6a9\ud558\uc5ec \uc6b0\ub9ac\uc758 \uc77c\uc0c1\uc0dd\ud65c\uc5d0 \ud544\uc218\uc801\uc778 \uae30\uc220\uc801 \uc9c4\ubcf4\ub97c \uac00\ub2a5\ucf00 \ud569\ub2c8\ub2e4. \uc774\ucc98\ub7fc \ud504\ub9ac\uc570\ud504\ub294 \uc624\ub514\uc624 \uc2dc\uc2a4\ud15c\uc758 \uc2ec\uc7a5\uacfc \uac19\uc740 \uc5ed\ud560\uc744 \ub2f4\ub2f9\ud558\uba70, \ubc00\uc811\ud558\uac8c \uc5f0\uad00\ub41c \uc804\uae30 \ubc0f \uc790\uae30\uc758 \uae30\ubcf8 \uc6d0\ub9ac\ub97c \uc801\uc6a9\ud558\uc5ec \uc791\ub3d9\ud569\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ud504\ub9ac\uc570\ud504\ub294 \uc2e0\ud638\ub97c \uc99d\ud3ed\uc2dc\ucf1c \uc804\ub825 \uc99d\ud3ed\uae30\ub85c \ubcf4\ub0b4\ub294 \uc911\uc694\ud55c \uc624\ub514\uc624 \uc7a5\uce58\uc774\uba70, \uc804\uc790\uae30 \uc6d0\ub9ac\ub97c \uc774\uc6a9\ud574 \uc791\ub3d9\ud569\ub2c8\ub2e4.<\/p>\n","protected":false},"author":1,"featured_media":175679,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[88],"tags":[89],"class_list":["post-147319","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-88","tag-89","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\ud504\ub9ac\uc570\ud504 | \uc791\ub3d9 \ubc29\uc2dd, \uc751\uc6a9 \ud504\ub85c\uadf8\ub7a8 \ubc0f \uc7a5\uc810<\/title>\n<meta name=\"description\" content=\"\ud504\ub9ac\uc570\ud504\ub294 \uc2e0\ud638\ub97c \uc99d\ud3ed\uc2dc\ucf1c \uc804\ub825 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