{"id":2525,"date":"2023-04-19T16:44:23","date_gmt":"2023-04-19T07:44:23","guid":{"rendered":"https:\/\/www.kyu.kr\/?p=2525"},"modified":"2023-04-19T16:44:24","modified_gmt":"2023-04-19T07:44:24","slug":"ltspice-tips","status":"publish","type":"post","link":"https:\/\/www.kyu.kr\/?p=2525","title":{"rendered":"LTspice tips"},"content":{"rendered":"\n<p>LTspice\ub294 \uc9c0\uae08\uc740 Analog Devices\uc758 \uc77c\ubd80\uac00 \ub41c Linear Technology\uc5d0\uc11c \ub9cc\ub4e0 \ubb34\ub8cc SW\uc785\ub2c8\ub2e4. \uc5ec\ub7ec \uc751\uc6a9\ucc98\uac00 \uc788\uaca0\uc9c0\ub9cc, \uc800\ub294 \uc624\ub514\uc624 \uc570\ud504 \uc81c\uc791\uc744 \ud574\ubcf4\uae30 \uc804\uc5d0 \uc2dc\ud5d8\ud574\ubcf4\ub294 \uc6a9\ub3c4\ub85c \uc544\uc8fc \uc720\uc6a9\ud558\uac8c \uc0ac\uc6a9\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4. \uba87 \uac00\uc9c0 tip\uc744 \uacf5\uc720\ud574\ubcfc\uae4c \ud569\ub2c8\ub2e4.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"687\" height=\"513\" src=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image.png\" alt=\"\" class=\"wp-image-2526\" srcset=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image.png 687w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image-150x112.png 150w\" sizes=\"auto, (max-width: 687px) 100vw, 687px\" \/><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li>\uc785\ucd9c\ub825 Port\uc758 \uc774\uc6a9 &#8211; \uba40\ub9ac \ub3cc\uc544\uac00\ub294 net\uc758 \uacbd\uc6b0 \uae38\uac8c \ub04c\uace0 \uac00\ub294 \uac83 \ubcf4\ub2e4\ub294 \uc704\uc758 \uc608\uc5d0\uc11c NFB \ucc98\ub7fc port\uc744 \uc774\uc6a9\ud558\ub294 \uac83\uc774 \ud68c\ub85c\ub3c4\ub97c \ub354 \uac04\ub2e8\ud558\uac8c \ubcf4\uc774\uac8c \ud569\ub2c8\ub2e4. \uc785\ub825\uc778\uc9c0 \ucd9c\ub825\uc778\uc9c0\uc5d0 \ub530\ub77c, 5\uac01\ud615\uc758 \ubfd4 \ubc29\ud5a5\uc774 \ubc14\ub00c\uac8c \ub429\ub2c8\ub2e4. Port\ub97c \ub9cc\ub4e4\uace0 \uc2f6\uc740 net\uc5d0 \ub9c8\uc6b0\uc2a4 \uc6b0\ud074\ub9ad\uc744 \ud558\uba74 \uc544\ub798 \ub2e4\uc774\uc54c\ub85c\uadf8\uac00 \ub739\ub2c8\ub2e4. Port type\uc744 Input\/Output\uc73c\ub85c \ubc14\uafb8\uace0 \uadf8 \uc704\uc5d0 \uc801\ub2f9\ud55c \uc774\ub984\uc744 \uc801\uc5b4\uc8fc\uba74 \ub429\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"190\" height=\"201\" src=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image-1.png\" alt=\"\" class=\"wp-image-2527\" srcset=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image-1.png 190w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image-1-142x150.png 142w\" sizes=\"auto, (max-width: 190px) 100vw, 190px\" \/><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li>Net \ub77c\ubca8\uc758 \uc774\uc6a9 &#8211; \uc704\uc758 \uc608\uc5d0\uc11c\ub294 PRE\ub77c\ub294 \ub77c\ubca8\uc774 \ud558\ub098 \uc788\uc2b5\ub2c8\ub2e4. \uc2dc\ubbac\uc744 \ub3cc\ub9ac\uace0 PRE\uc5d0 \ud574\ub2f9\ud558\ub294 net\uc5d0 \ud074\ub9ad\uc744 \ud558\uac8c \ub418\uba74 \ud30c\ud615\uc774 \ub728\ub294\ub370 PRE\ub77c\ub294 \ub77c\ubca8\uc744 \ubd99\uc774\uc9c0 \uc54a\uc73c\uba74 netlist \uc0c1\uc758 \uc22b\uc790\ub85c \uc81c\ubaa9\uc774 \ubd99\uac8c \ub418\uc5b4\uc11c \ud5f7\uac08\ub9ac\uac8c \ub429\ub2c8\ub2e4. \uc544\ub798\uc640 \uac19\uc740 \uc2dd\uc785\ub2c8\ub2e4. \ub9e8 \uc704\ub294 R8\uc758 \uc67c\ucabd\uc744 \ud074\ub9ad\ud55c \uac83\uc774\uace0 \ub098\uc911\uc5d0 \ubcf4\uba74 \uc774\uac8c \uc5b4\ub5a4 net\uc778\uc9c0 \ud5f7\uac08\ub9ac\uac8c \ub429\ub2c8\ub2e4. \uac00\uc6b4\ub370 plot plane\uc740 PRE\ub97c \ud074\ub9ad\ud55c \uac83\uc73c\ub85c V(pre)\ub85c \uc81c\ubaa9\uc774 \ub2ec\ub824 \uc788\uae30 \ub54c\ubb38\uc5d0 \ud5f7\uac08\ub9ac\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. OUT\ub3c4 \ub9c8\ucc2c\uac00\uc9c0 \uc785\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"949\" height=\"900\" src=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image-2.png\" alt=\"\" class=\"wp-image-2528\" srcset=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image-2.png 949w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image-2-800x759.png 800w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image-2-150x142.png 150w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image-2-768x728.png 768w\" sizes=\"auto, (max-width: 949px) 100vw, 949px\" \/><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li>\uc704\uc640 \uac19\uc774 \uc5ec\ub7ec \uac1c\uc758 \ud30c\ud615\uc744 \uac19\uc774 \ubcf4\ub824\uba74 Add Plot Plane\uc744 \ub204\ub974\uba74 \ub429\ub2c8\ub2e4<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"295\" height=\"325\" src=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image-3.png\" alt=\"\" class=\"wp-image-2529\" srcset=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image-3.png 295w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image-3-136x150.png 136w\" sizes=\"auto, (max-width: 295px) 100vw, 295px\" \/><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li>Transient \ubd84\uc11d\uacfc AC \ubd84\uc11d &#8211; LTspice\uc5d0\uc11c \uc570\ud504\ud68c\ub85c\ub97c \uc704\ud574 \uc8fc\ub85c \uc4f0\ub294 \uac83\uc774 \uc8fc\ub85c \uc774 \ub450 \uac00\uc9c0\uc778\ub370 \uc774 \ub458\uc744 \ub3d9\uc2dc\uc5d0 \ud574\uc8fc\uc9c4 \ubabb\ud569\ub2c8\ub2e4. \uadf8\ub798\uc11c \ub9e4\ubc88 \uba85\ub839\uc744 \uc218\uc815\ud574\uc918\uc57c \ud558\ub294\ub370, \ub458 \uc911\uc758 \ud558\ub098\ub97c comment \ucc98\ub9ac\ud574\uc8fc\uba74 \uba85\ub839\uc5b4\ub97c \uc9c0\uc6b8 \ud544\uc694\uac00 \uc5c6\uc2b5\ub2c8\ub2e4. \ub9e8 \uc704\uc758 \ud68c\ub85c\ub3c4\uc5d0\uc11c transient\ub294 \uc0b4\uc544 \uc788\uace0 AC\ub294 comment \ucc98\ub9ac\ub418\uc5b4 \uc788\ub294\ub370, \ubc18\ub300\ub85c \ubc14\uafb8\uace0 \uc2f6\uc73c\uba74 AC \uba85\ub839 \uc704\uc5d0 \ub9c8\uc6b0\uc2a4\ub97c \ub300\uace0 \uc624\ub978\ucabd \ubc84\ud2bc\uc744 \ub204\ub985\ub2c8\ub2e4. \uadf8\ub7ec\uba74 \uc544\ub798 \ub2e4\uc774\uc54c\ub85c\uadf8\uac00 \ub098\uc635\ub2c8\ub2e4. .tran \uc55e\uc5d0 \uc138\ubbf8\ucf5c\ub860\uc744 \uc801\uace0, ;.ac\uc5d0\uc11c \uc138\ubbf8\ucf5c\ub860\uc744 \uc9c0\uc6b0\uba74 \ub429\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"464\" height=\"199\" src=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image-6.png\" alt=\"\" class=\"wp-image-2532\" srcset=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image-6.png 464w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image-6-150x64.png 150w\" sizes=\"auto, (max-width: 464px) 100vw, 464px\" \/><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li>\uc5ec\ub7ec \ub124\ud2b8\uc758 \uc2dc\ubbac \uac12 \ud655\uc778 &#8211; LTspice\ub97c \uc4f0\ub294 \uc774\uc720\ub294 \uacb0\uad6d Transient \ubd84\uc11d\uc744 \ud558\uace0 \ud478\ub9ac\uc5d0 \ud2b8\ub79c\uc2a4\ud3ec\uba54\uc774\uc158 \ubd84\uc11d\uc744 \ud558\uae30 \uc704\ud55c \uac83\uc785\ub2c8\ub2e4. Transient \ubd84\uc11d\uc740 \ud55c net\uc5d0 \ub300\ud574\uc11c\ub9cc \uac00\ub2a5\ud558\uc9c0\ub9cc \ud478\ub9ac\uc5d0 \ubd84\uc11d\uc740 \uc5ec\ub7ec net\uc5d0 \ub300\ud574\uc11c\ub3c4 \ub429\ub2c8\ub2e4. \ub9e8 \uc704\uc758 \uadf8\ub9bc\uc5d0\uc11c\ucc98\ub7fc .four \uba85\ub839\uc744 \uc5ec\ub7ec \uac1c \ub123\uc5b4\ub450\uba74 \ub429\ub2c8\ub2e4. \ud655\uc778\uc740 SPICE error log\uc5d0\uc11c \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc544\ub798\uc758 \uc608\uc5d0\uc11c\ub294 \ucd08\ub2e8 \ucd9c\ub825\uacfc \ucd9c\ub825\uad00 \ucd9c\ub825\uc758 THD\ub97c \uac19\uc774 \ubcf4\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"638\" height=\"584\" src=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image-4.png\" alt=\"\" class=\"wp-image-2530\" srcset=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image-4.png 638w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image-4-150x137.png 150w\" sizes=\"auto, (max-width: 638px) 100vw, 638px\" \/><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li>plotwinsize &#8211; \ub9e8 \uc704\uc758 \ud68c\ub85c\ub3c4\uc5d0 \ubcf4\uba74 .options plotwinsize=0:FFT \ub77c\ub294 \uba85\ub839\uc774 \uc788\ub294\ub370 plotwinsize\uc758 \uc758\ubbf8\ub294 Number of data points to compress in one window\ub77c\uace0 \ud569\ub2c8\ub2e4. \ub514\ud3f4\ud2b8 \uac12\uc740 300\uc774\uad70\uc694. Compression\uc744 disable \ud558\ub824\uba74 0\uc744 \uc8fc\ub77c\uace0 \ub418\uc5b4 \uc788\ub294\ub370, \uc774 \uc635\uc158\uc774 FFT\ub97c \ubcfc \ub54c \uc720\uc6a9\ud569\ub2c8\ub2e4. \uba3c\uc800 \uc774 \uc635\uc158\uc744 \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uace0 FFT\ub97c \ubcf4\uba74 \uc774\ub807\uac8c \ub098\uc635\ub2c8\ub2e4<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"951\" height=\"350\" src=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image-7.png\" alt=\"\" class=\"wp-image-2533\" srcset=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image-7.png 951w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image-7-800x294.png 800w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image-7-150x55.png 150w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/image-7-768x283.png 768w\" sizes=\"auto, (max-width: 951px) 100vw, 951px\" \/><\/figure>\n<\/div>\n\n\n<p>\uc774 \uc635\uc158\uc744 \uc0ac\uc6a9\ud558\uc5ec FFT\ub97c \ubcf4\uba74 \uc774\ub807\uac8c \ubc14\ub01d\ub2c8\ub2e4 <\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"949\" height=\"350\" src=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/\uc2a4\ud06c\ub9b0\uc0f7-2023-04-19-164144.png\" alt=\"\" class=\"wp-image-2538\" srcset=\"https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/\uc2a4\ud06c\ub9b0\uc0f7-2023-04-19-164144.png 949w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/\uc2a4\ud06c\ub9b0\uc0f7-2023-04-19-164144-800x295.png 800w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/\uc2a4\ud06c\ub9b0\uc0f7-2023-04-19-164144-150x55.png 150w, https:\/\/www.kyu.kr\/wp-content\/uploads\/2023\/04\/\uc2a4\ud06c\ub9b0\uc0f7-2023-04-19-164144-768x283.png 768w\" sizes=\"auto, (max-width: 949px) 100vw, 949px\" \/><\/figure>\n<\/div>\n\n\n<p>\uc880 \ub354 \ubcf4\uae30 \uc26c\uc6b4 \ud615\ud0dc\ub85c \ucd9c\ub825\ub418\ubbc0\ub85c \ub354 \uc88b\uc2b5\ub2c8\ub2e4<\/p>\n\n\n\n<p>\uc774\uc0c1 LTspice\ub97c \ub3cc\ub9b4 \ub54c \ub9c8\ub2e4 \uc0ac\uc6a9\ud558\ub294 \uac83\ub4e4\uc744 tip\uc774\ub77c\ub294 \uc774\ub984\uc73c\ub85c \ubb36\uc5b4\ubcf4\uc558\uc2b5\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>LTspice\ub294 \uc9c0\uae08\uc740 Analog Devices\uc758 \uc77c\ubd80\uac00 \ub41c Linear Technology\uc5d0\uc11c \ub9cc\ub4e0 \ubb34\ub8cc SW\uc785\ub2c8\ub2e4. \uc5ec\ub7ec \uc751\uc6a9\ucc98\uac00 \uc788\uaca0\uc9c0\ub9cc, \uc800\ub294 \uc624\ub514\uc624 \uc570\ud504 \uc81c\uc791\uc744 \ud574\ubcf4\uae30 \uc804\uc5d0 \uc2dc\ud5d8\ud574\ubcf4\ub294 \uc6a9\ub3c4\ub85c \uc544\uc8fc \uc720\uc6a9\ud558\uac8c \uc0ac\uc6a9\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4. \uba87 \uac00\uc9c0 tip\uc744 \uacf5\uc720\ud574\ubcfc\uae4c \ud569\ub2c8\ub2e4. \uc774 \uc635\uc158\uc744 \uc0ac\uc6a9\ud558\uc5ec FFT\ub97c \ubcf4\uba74 \uc774\ub807\uac8c \ubc14\ub01d\ub2c8\ub2e4 \uc880 \ub354 \ubcf4\uae30 \uc26c\uc6b4 \ud615\ud0dc\ub85c \ucd9c\ub825\ub418\ubbc0\ub85c \ub354 \uc88b\uc2b5\ub2c8\ub2e4 \uc774\uc0c1 LTspice\ub97c \ub3cc\ub9b4 \ub54c \ub9c8\ub2e4 \uc0ac\uc6a9\ud558\ub294 \uac83\ub4e4\uc744 tip\uc774\ub77c\ub294 \uc774\ub984\uc73c\ub85c &hellip;<br \/><a href=\"https:\/\/www.kyu.kr\/?p=2525\" class=\"more-link pen_button pen_element_default pen_icon_arrow_double\"><span class=\"screen-reader-text\">LTspice tips<\/span> \ub354\ubcf4\uae30<\/a><\/p>\n","protected":false},"author":1,"featured_media":2526,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[108],"tags":[350,353,351,151,348,352,347,349],"class_list":["post-2525","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-108","tag-ac-analysis","tag-fft","tag-fourier-component","tag-ltspice","tag-net","tag-plotwinsize","tag-port","tag-transient"],"_links":{"self":[{"href":"https:\/\/www.kyu.kr\/index.php?rest_route=\/wp\/v2\/posts\/2525","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=2525"}],"version-history":[{"count":1,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=\/wp\/v2\/posts\/2525\/revisions"}],"predecessor-version":[{"id":2539,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=\/wp\/v2\/posts\/2525\/revisions\/2539"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=\/wp\/v2\/media\/2526"}],"wp:attachment":[{"href":"https:\/\/www.kyu.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2525"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2525"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kyu.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2525"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}