{"id":6603,"date":"2025-07-21T00:00:00","date_gmt":"2025-07-21T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/turns-ratio-in-lan-transformers\/"},"modified":"2026-06-22T08:54:07","modified_gmt":"2026-06-22T08:54:07","slug":"turns-ratio-in-lan-transformers","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/ko\/glossary\/turns-ratio-in-lan-transformers","title":{"rendered":"LAN \ubcc0\uc555\uae30\uc5d0\uc11c \ud134\uc2a4 \ube44\uc728(Turns Ratio)\uc774\ub780 \ubb34\uc5c7\uc778\uac00\uc694?"},"content":{"rendered":"
\"What<\/figure>\n\n\n\n

\ud83e\uddf2<\/strong>\uc774\ub354\ub137 \ub9e4\uadf8\ub124\ud2f1\uc2a4(Ethernet Magnetics)\uc5d0\uc11c \ud134\uc2a4 \ube44\uc728 \uc774\ud574\ud558\uae30<\/h2>\n\n\n\n

The<\/span> \ud134\uc2a4 \ube44\uc728<\/strong> LAN \ubcc0\uc555\uae30\uc5d0\uc11c\u2014\ub610\ub294 \uc774\ub354\ub137 \ub9e4\uadf8\ub124\ud2f1\uc2a4\ub77c\uace0\ub3c4 \ubd88\ub9bc\u2014\ub294 \ubcc0\uc555\uae30\uc758<\/a>1\ucc28 \uce21(Primary side) (PHY \uce21)\uacfc<\/strong> 2\ucc28 \uce21(Secondary side) (\ucf00\uc774\ube14 \uce21)\uc758 \uad8c\uc120 \uc218(\ud134\uc218) \uac04 \uad00\uacc4\ub97c \uc815\uc758\ud558\ub294 \ud575\uc2ec \uc124\uacc4 \ud30c\ub77c\ubbf8\ud130\uc785\ub2c8\ub2e4. \uc77c\ubc18\uc801\uc73c\ub85c<\/strong> \uc640 \uac19\uc740 \ube44\uc728\ub85c \ud45c\uc2dc\ub418\uba70, \uc774\ub354\ub137 \uc751\uc6a9 \ubd84\uc57c\uc5d0\uc11c \uc2e0\ud638 \ubb34\uacb0\uc131, \uc784\ud53c\ub358\uc2a4 \ub9e4\uce6d \ubc0f \uc804\ub825 \uc624\ubc84 \uc774\ub354\ub137(PoE) \ud638\ud658\uc131\uc5d0 \uc9c1\uc811\uc801\uc778 \uc601\ud5a5\uc744 \ubbf8\uce69\ub2c8\ub2e4. 1:1<\/strong> \ub610\ub294 2.5:1<\/strong>, \uc65c LAN \ubcc0\uc555\uae30\uc5d0\uc11c \ud134\uc2a4 \ube44\uc728\uc774 \uc911\uc694\ud55c\uac00\uc694?.<\/p>\n\n\n\n

\ud83e\uddf2<\/strong>\uc784\ud53c\ub358\uc2a4 \ub9e4\uce6d<\/h2>\n\n\n\n

1. \uc774\ub354\ub137 \ud68c\ub85c \ub0b4 \ubcc0\uc555\uae30\uc758 \uc8fc\uc694 \ubaa9\uc801\uc740 PHY(\ubb3c\ub9ac \uacc4\uce35 IC)\uc640 \ud2b8\uc704\uc2a4\ud2b8 \ud398\uc5b4 \ucf00\uc774\ube14(\uc77c\ubc18\uc801\uc73c\ub85c 100 \u03a9 \ucc28\ub3d9 \uc784\ud53c\ub358\uc2a4) \uc0ac\uc774\uc5d0<\/strong><\/h3>\n\n\n\n

\uc784\ud53c\ub358\uc2a4 \ub9e4\uce6d\uc744 \uc81c\uacf5\ud558\ub294 \uac83\uc785\ub2c8\ub2e4. 1:1 \ud134\uc2a4 \ube44\uc728\uc740 \uc77c\ubc18\uc801\uc73c\ub85c \uc774 \uc784\ud53c\ub358\uc2a4 \uade0\ud615\uc744 \uc720\uc9c0\ud558\uc5ec \uc2e0\ud638 \ubc18\uc0ac\ub97c \ucd5c\uc18c\ud654\ud558\uace0 \ucd5c\ub300 \uc804\ub825 \uc804\ub2ec\uc744 \ubcf4\uc7a5\ud569\ub2c8\ub2e4. \uc804\uc555 \ubc0f \uc804\ub958 \ubcc0\ud658<\/strong> 1:1\uc774 \uc544\ub2cc \ud134\uc2a4 \ube44\uc728\uc740 \uc804\uc555 \ubc0f \uc804\ub958 \ub808\ubca8 \uc870\uc815\uc744 \uac00\ub2a5\ud558\uac8c \ud569\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4,.<\/p>\n\n\n\n

2. 5:1 \ud134\uc2a4 \ube44\uc728\uc740 \uc804\uc555\uc744 2.5\ubc30 \uac10\uc18c\uc2dc\ud0a4\uace0 \uc804\ub958\ub294 \uadf8\uc5d0 \ube44\ub840\ud574 \uc99d\uac00\uc2dc\ud0b5\ub2c8\ub2e4. \uc774\ub294 \uaca9\ub9ac \uc7a5\ubcbd\uc744 \uac00\ub85c\uc9c8\ub7ec \ub2e4\uc591\ud55c \uc804\uc555 \ub808\ubca8\uc744 \uc9c0\uc6d0\ud574\uc57c \ud558\ub294<\/strong><\/h3>\n\n\n\n

(\uc804\ub825 \uc624\ubc84 \uc774\ub354\ub137) \uc751\uc6a9 \ubd84\uc57c\uc5d0\uc11c \uc720\ub9ac\ud569\ub2c8\ub2e4.<\/strong> \uc2e0\ud638 \uaca9\ub9ac \ubc0f \ubcf4\ud638 PoE<\/strong><\/a> \uc774\ub354\ub137 \ubcc0\uc555\uae30<\/strong> \ub294 \ud134\uc2a4 \ube44\uc728\uacfc \uad00\uacc4\uc5c6\uc774 PHY\uc640 \uc678\ubd80 \uc774\ub354\ub137 \ucf00\uc774\ube14 \uc0ac\uc774\uc5d0.<\/p>\n\n\n\n

3. \uac08\ubc14\ub2c8\uc801 \uaca9\ub9ac(Galvanic isolation)<\/strong><\/h3>\n\n\n\n

\ubaa8\ub450 (\uc77c\ubc18\uc801\uc73c\ub85c 1500 Vrms)\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 \ubbfc\uac10\ud55c IC\ub97c \uacfc\uc804\uc555 \uc11c\uc9c0, \uadf8\ub77c\uc6b4\ub4dc \ub8e8\ud504 \ubc0f<\/a>, \uc77c\ubc18\uc801\uc778 \ud134\uc2a4 \ube44\uc728 \uad6c\uc131 \uc751\uc6a9 \uc720\ud615<\/strong> \uc77c\ubc18\uc801\uc778 \ud134\uc2a4 \ube44\uc728 EMI<\/a>.<\/p>\n\n\n\n

\ud83e\uddf2<\/strong>\ucc38\uace0 \uc0ac\ud56d<\/h2>\n\n\n\n
\n\n<\/colgroup>

10\/100BASE-T \uc774\ub354\ub137<\/p><\/th>

\uae30\uc874 \uc774\ub354\ub137 \ud45c\uc900<\/p><\/th>

1000BASE-T(\uae30\uac00\ube44\ud2b8)<\/p><\/th><\/tr>

1:1 \ub610\ub294 \uc13c\ud130 \ud0ed(Center-tap)<\/p><\/td>

1:1<\/p><\/td>

\ud480 \ub4c0\ud50c\ub809\uc2a4 \uc2e0\ud638 \uc804\uc1a1\uc5d0 \ucd5c\uc801\ud654\ub428<\/p><\/td><\/tr>

PoE \/ PoE+(802.3af\/at)<\/p><\/td>

5:1 \uc774\uc0c1<\/p><\/td>

\ucf00\uc774\ube14 \uce21\uc5d0\uc11c \ub354 \ub192\uc740 \uc804\uc555\uc744 \uc9c0\uc6d0\ud568<\/p><\/td><\/tr>

\uba40\ud2f0\uae30\uac00\ube44\ud2b8 \uc774\ub354\ub137(2.5G\/5G\/10G)<\/p><\/td>

PHY\uc5d0 \ub530\ub77c \ub2e4\ub984<\/p><\/td>

\uc815\ubc00\ud55c \ub9e4\uce6d \ubc0f \ucc28\ud3d0 \ud544\uc694<\/p><\/td><\/tr>

\ud83d\udccc \uc608\uc2dc: LINK-PP\uc758<\/p><\/td>

LP5019NL<\/p><\/td>

1G LAN \ubcc0\uc555\uae30\ub294 IEEE 802.3u \ubc0f 802.3ab \ud45c\uc900\uacfc\uc758 \ud638\ud658\uc131\uc744 \uc704\ud574 1CT:1 \ud134\uc2a4 \ube44\uc728\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n

\n

\uc62c\ubc14\ub978 \ud134\uc2a4 \ube44\uc728\uc744 \uc120\ud0dd\ud558\ub294 \ubc29\ubc95\uc740 \ubb34\uc5c7\uc778\uac00\uc694? <\/span>\uc801\uc808\ud55c \ud134\uc2a4 \ube44\uc728\uc744 \uc120\ud0dd\ud558\ub294 \uac83\uc740 \uc5ec\ub7ec \uc2dc\uc2a4\ud15c \uc218\uc900 \uc694\uc778\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4:<\/a> PHY \ucd9c\ub825 \uc2a4\uc719 \uc804\uc555.<\/span><\/p>\n<\/blockquote>\n\n\n\n

\"Turns<\/figure>\n\n\n\n

\ud83e\uddf2<\/strong>\uacf5\ud1b5 \ubaa8\ub4dc \ub178\uc774\uc988 \uc81c\uac70 \uc131\ub2a5<\/h2>\n\n\n\n

PoE \uc804\uc555 \ub4f1\uae09(\uc608: IEEE 802.3af, at, bt)<\/p>\n\n\n\n