在許多應用中，數據鏈路6AV63812BP074AV0之間需要(甚至是必要的)非直接的(導電)連接，從而在
提供數據的同時避免來自系統某-部分的危險電壓 (或電流)對其另一部分造成破壞，造成
這種破壞性失效的可能是電源質量低劣、接地故障、雷擊和浪涌等各種故障。此外，通信節
點的間距可能相當大，常常由不同接地區域的AC插座來給這些節點供電，這些接地區域之
間的電位差(可能含有DC偏壓、50HZ 的AC諧波和各種瞬態噪聲分量)也會造成破壞。
在實際工程使用中，經常發生通過電纜邏輯接地或屏蔽將這些地線連接在一-起的情況, 可能
形成接地環路，且電流將流入該電纜。接地環路電流會對通信產生嚴重影響(包括數據惡化、
EMI過大、元件損壞)，當電位差足夠大時，人體就有遭受電擊的可能。
一般在兩種情況”下會采用隔離技術:第一種情況是: 在有可能存在損壞設備或危害人員的潛
在電流浪涌時。如醫療上的應用、電機控制、總線隔離等方面。第二種情況是:必須避免存
在不同地位和分裂的接地回路的互連。兩種情況都是采用隔離來避免電流流過，而允許兩點
之間有數據或功率傳送。
電路隔離的主要目的是通過隔離元器件把噪聲干擾的路徑切斷,從而達 到抑制噪聲干擾的
效果,使電子電氣設備符合電磁兼容性的要求。數據鏈路西門子6AV63812BP074AV0電路隔離主要有:模擬電路的隔離、數字電
路的隔離、數字電路 與模擬電路之間的隔離。所使用的隔離方法有:變壓器隔離法、脈沖
變壓器隔離法、繼電器隔離法、光電耦合 器隔離法、直流電壓隔離法、 線性隔離放大器
隔離法、光纖隔離法、 A/D 轉換器隔離法等。
說直觀一點就是如果產品的使用環境比較復雜(比如工業環境)，或沙及到多個不同電源供
電系統之前的相互通訊(比如RS232. RS485. CAN等各種通訊接口)都需要(甚至是必.
須)隔離。
電子電路中的隔離會涉及到三個方面的隔離:
第一是電源的隔離，一般會選擇DC-DC隔離電源模塊。
第二是信號、數據的隔離，這- -點我們會在以后的文章中介紹。
第三是地的隔離，隔離前側的地(GND)與后側的地(GNDISO) 是不可以連接在- -起的，
但有些不得不連接在一-起的場合，我們可以選用磁珠或0歐電阻放在兩個地之間。
關于電子電路中的隔離基本概念先寫到這里，下篇我們要介紹電子電路中模擬電路的隔離。
6AV6641-0AA11-0AX0
6AV6642-0BC01-1AX0
6AV2123-2JB03-0AX0
6AV63812BK074AV0
6SL32101PE132UL1
6AV21000AA030AA7
6AV2100-0AA03-0AA7
6AV2124-0MC01-0AX0
6AV6641-0BA11-0AX0
6AV6642-0DA01-1AX0
6AV2123-2MA03-0AX0
6AV63812BL074AV0
6SL32101PE132AL1
6AV21020AA030AA7
6AV2102-0AA03-0AA7
6AV2124-1MC01-0AX0
6AV6641-0CA01-0AX0
6AV6643-0AA01-1AX0
6AV2123-2MBO3-0AX0
6AV63812BM074AV0
6SL32101PE143UL1
6AV21030AA030AA7
6AV2103-0AA03-0AA7
6AV2124-0QC02-0AX0
6AV6574-2AC00-2AA0
6AV6574-1AF04-4AA0
6AV6647-0AH11-3AX0
6AV63812BN074AV0
6SL32101PE143AL1
6AV21012AA030AC5
6AV2101-2AA03-0AC5
6AV2124-1QC02-0AX0
6AV6545-0AA10-0XA0
6AV6640-0CA11-0AX0
6AV6647-0AA11-3AX0
6AV63812BP074AV0
6SL32101PE161UL1
6AV21022AA030BD5
6AV2102-2AA03-0BD5
6AV2124-0UC02-0AX0
6AV6542-0BB15-2AX0
6AV6641-0AA11-0AX0
6AV6647-0AK11-3AX0
6AV63812BS074AV0
6SL32101PE161AL1
6AV21032AD030AC5
6AV2103-2AD03-0AC5
6AV2124-0XC02-0AX0
6AV6545-0AA15-2AX0
6AV6574-2AC00-2AA0
6AV6647-0AJ11-3AX0
6AV63812BQ074AV0
6SL32101PE180UL1
6AV21032DH030BD5
6AV2103-2DH03-0BD5
6AV2144-8GC10-0AA0
6AV6642-0DC01-1AX0
6AV6542-0DA10-0AX0
6AV6647-0AB11-3AX0
6AV63812BT074AV0
6SL32101PE180AL1
6AV21032HX030BD5
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6AV2144-8MC10-0AA0
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6AV6542-0AG10-0XA0
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6AV63812BU074AV0
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6AV6642-0BC01-1AX0
6AV6545-0AA10-0XA0
6AV6647-0AD11-3AX0
6AV63812BV074AV0
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6AV21013AA030AE5
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6AV2181-4DB10-0AX0
6AV6642-0BA01-1AX0
6AV6642-0AA11-0AX0
6AV6647-0AE11-3AXO
6AV63711CA074AX0
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6AV21023AA030AE5
6AV2102-3AA03-0AE5
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6AV63711CF074AX0
6SL32101PE214AL0
6AV21033DA030AE5
6AV2103-3DA03-0AE5
6AV2181-4GB10-0AX0
6AV6643-0AA01-1AX0
6AV6 648-0AE11-3AX0
6AV6647-0AG11-3AX0
6AV63621AB000BB0
6SL32101PE218UL0
6AV21033HA030AE5
6AV2103-3HA03-0AE5
6AV2181-4JB00-0AX0
6AV6642-0AA11-0AX0
6AV6 648-0AC11-3AX0
6AV2124-2DC01-0AXO
6AV63621AD000BB0
6SL32101PE218AL0
6AV21033XA030AE5
6AV2103-3XA03-0AE5
6AV2181-4JB10-0AX0
6AV6542-0CA10-0AX0
6AV6 640-0CA11-0AX0
6AV2124-1DC01-0AX0
6AV63621AF000BB0
6SL32101PE227AL0
6AV21014AB030AE5
6AV2101-4AB03-0AE5
6AV2181-4MB00-0AX0
6AV6545-0BB15-2AX0
6AV6 640-0DA11-0AX0
6AV2124-0GC01-0AX0
6AV63621AJ000BB0
6SL32101PE233UL0
6AV21014BB030AE5
6AV2101-4BB03-0AE5
6AV2181-4MB10-0AX0
6AV6545-0BC15-2AX0
6AV6 641-0AA11-0AX0
6AV2124-1GC01-0AX0
6AV63621AM000BB0
6SL32101PE233AL0
6AV21024AA030AE5
6AV2102-4AA03-0AE5
6AV2181-4QB00-0AX0
6AV6545-0CA10-0AX0
6AV6 641-0BA11-0AX0
6AV2124-0JC01-0AXO
6AV63623AB000BB0
6SL32101PE238UL0
6AV21034BD030AE5
6AV2103-4BD03-0AE5
6AV2181-4QB10-0AX0
6AV6545-0BA15-2AX0
6AV6 641-0CA01-0AX0
6AV2124-1JC01-0AX0
6AV63623AD000BB0
6SL32101PE238AL0
6AV21034DD030AE5
6AV2103-4DD03-0AE5
6AV2181-4UB00-0AX0
6AV6640-0CA11-0AX0
6AV6 642-0AA11-0AX0
6AV2124-0MC01-0AX0
6AV63623AF000BB0
6SL32101PE245UL0
6AV21034FH030AE5
6AV2103-4FH03-0AE5
6AV2181-4XB00-0AX0
6AV6640-0DA11-0AX0
6AV6 642-0BC01-1AX0
6AV2125-2GB23-0AX0
6AV63623AJ000BB0
6SL32101PE245AL0
6AV21034KX030AE5
6AV2103-4KX03-0AE5
6AV2181-8XP00-0AX0
6AV6643-0CB01-1AX1
6AV6 642-0BA01-1AX0
6AV2125-2JB03-0AX0
6AV63622AB000BB0
6SL32101PE260UL0
6AV21034MX030AE5
6AV2103-4MX03-0AE5
6AV2124-6DJ00-0AX0
6AV6643-0DB01-1AX1
6AV6 642-0DC01-1AX0
6AV2125-2JB23-0AX0
6AV63622AD000BB0
6SL32101PE260AL0
6AV21034PX030AE5
6AV2103-4PX03-0AE5
6AV2124-6GJ00-0AX0
6AV6545-0CC10-0AX0
6AV6 642-0DA01-1AX0
6AV2125-2AE03-0AX0
6AV63622AF000BB0
6SL32101PE275UL0
6AV21034RX030AE5
6AV2103-4RX03-0AE5
6AV2124-6JJ00-0AX0
6AV6542-0CC10-0AX0
6AV6 643-0BA01-1AX0
6AV2125-2AE13-0AX0
6AV63622AJ000BB0
6SL32101PE275AL0
6AV21034TX030AE5
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6AV2124-6MJ00-0AX0
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6AV6 643-0DB01-1AX1
6AV2125-2AE23-0AX0
6AV63622AM000BB0
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6AV66120AA000AL0
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6AV6643-0CD01-1AX1
6AV6 643-0CD01-1AX1
6AV2181-5AF02-0AX0
6AV63622BB000BB0
6SL32101PE288AL0
6AV66120AA000AM0
6AV6612-0AA00-0AM0
6AV2124-6UJ00-0AX1
6AV6643-0DD01-1AX1
6AV6 643-0DD01-1AX1
6AV2181-5AF05-0AX0
6AV63622BD000BB0
6SL32101PE311UL0
6AV66130AA000AL0
6AV6613-0AA00-0AL0
6AV2124-6XJ00-0AX1
6AV6542-0AG10-0XA0
6AV6671-1CB00-0AX0
6AV2181-5AF08-0AX0
6AV63622BF000BB0
6SL32101PE311AL0
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6AV6613-0AA00-0AM0
6AV2124-0GC13-0AX0
6AV6644-0BA01-2AX0
6AV6671-1CB00-0AX1
6AV2181-5AF10-0AXO
6AV63622BJ000BB0
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6AV21030DA000AL0
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6AV2125-2DB23-0AX0
6AV6644-0BA01-2AX0
6AV6644-0AA01-2AX0
6AV2181-5AF15-0AX0
6AV63622BM000BB0
6SL32101PE315AL0
6AV21030DA000AM0
6AV2103-0DA00-0AM0
6AV2125-2GB03-0AX0
6AV6545-0DA10-0AX0
6AV6644-0AB01-2AX0
6AV2181-5AF20-0AX0
6AV63711DQ174AX0
6SL32101PE318UL0
6AV21030HA000AL0
6AV2103-0HA00-0AL0
6AV2125-2GB23-0AX0
6AV6542-0DA10-0AX0
6AV6644-0AC01-2AX0
6AV2181-5AF25-0AX0
6AV63711DQ174BX0
6SL32101PE318AL0
6AV21030HA000AM0
6AV2103-0HA00-0AM0
6AV2125-2JB03-0AX0
6AV6644-0AB01-2AX0
6AV6644-0BA01-2AX0
6AV2181-5AG80-0AX0
6AV63711DQ174CX0
6SL32101PE321UL0
6AV21030XA000AL0
6AV2103-0XA00-0AL0
6AV2125-2JB23-0AX0
6AV6545-0DB10-0AX0
6AV6648-0AC11-3AX0
6AV6645-0AA01-0AX0
6AV63711DQ174EX0
6SL32101PE321AL0
6AV21030XA000AM0
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6AV2125-2AE03-0AX0
6AV6644-0AC01-2AX0
6AV6648-0AE11-3AX0
6AV6645-0AB01-0AX0
6AV63621BA000BB0
6SL32101PE325UL0
6AV21040BA030AA0
6AV2104-0BA03-0AA0
6AV2125-2AE13-0AX0
6AV6 643-0CB01-1AX1
6AV6648-0AF11-3AX0
6AV6645-0AC01-0AX0
6AV63621FA000BB0
6SL32101PE325AL0
6AV21040DA030AA0
6AV2104-0DA03-0AA0
6AV2125-2AE23-0AX0
6AV6 643-0DB01-1AX1
6AV6648-0BC11-3AX0
6AV6645-0BA01-0AX0
6AV63711CB074AX0
6SL32101PH214AL0
6AV21040FA030AA0
6AV2104-0FA03-0AA0
6AV2181-5AF02-0AX0
6AV6 643-0CD01-1AX1
6AV6648-0BE11-3AX0
6AV6645-0BB01-0AX0
6AV63711CC074AX0
6SL32101PH220UL0
6AV21040HA030AA0
6AV2104-0HA03-0AA0
6AV2181-5AF05-0AX0
6AV6 643-0DD01-1AX1
6AV6648-0CC11-3AX0
6AV6645-0BC01-0AX0
6AV63711DR074AX0
6SL32101PH220AL0
6AV21040KA030AA0
6AV2104-0KA03-0AA0
6AV2181-5AF08-0AX0
6AV6 644-0AA01-2AX0
6AV6648-0CE11-3AX0
6AV6645-0CA01-0AX0
6AV63711DR174AX0
6SL32101PH223UL0
6AV21050BA030AA0
6AV2105-0BA03-0AA0
6AV2181-5AF10-0AX0
6AV6 644-0AB01-2AX0
6AV6645-0CB01-0AX0
6AV63624AA074AA0
6SL32101PH223AL0
6AV21050DA030AA0
6AV2105-0DA03-0AA0
6AV2181-5AF15-0AX0
6AV6 644-0BA01-2AX0
6AV6645-0CC01-0AX0
6AV63624AD000BB0
6SL32101PH227UL0
6AV21050FA030AA0
6AV2105-0FA03-0AA0
6AV2181-5AF20-0AX0
6AV6 644-0AC01-2AX0
6AV6645-0BE02-0AX0
6AV63624AF000BB0
6SL32101PH227AL0
6AV21050HA030AA0
6AV2105-0HA03-0AA0
6AV2181-5AF25-0AX0
6AV6 642-0AA11-0AX1
6AV6645-0DD01-0AX1
6AV63624AH000BB0
6SL32101PH235UL0
6AV21050KA030AA0
6AV2105-0KA03-0AA0
6AV2181-5AG80-0AX0
6AV6 642-0BC01-1AX1
6AV6645-0DE01-0AX1
6AV63721DC074AX0
6SL32101PH235AL0
6AV21050MA030AA0
6AV2105-0MA03-0AA06SL32105FB102UF0
6AV2123-2DB03-0AX0
6AV6 642-0BA01-1AX1
6AV6645-0EB01-0AX1
6AV63721DD074AX0
6SL32101PH242UL0
6AV21050PA030AA0
6AV2105-0PA03-0AA0
6AV2123-2GA03-0AX0
6AV6 641-0CA01-0AX1
6AV6645-0EC01-0AX1
6AV63711DG074AX0
6SL32101PH242AL0
6AV21050RA030AA0
6AV2105-0RA03-0AA0
6AV2123-2GB03-0AX0
6AV6 641-0AA11-0AX0
6AV6645-0EF01-0AX1
6AV63711DV074AX0
6SL32101PH252UL0
6AV21050TA030AA0
6AV2105-0TA03-0AA0
6AV2123-2JB03-0AX0
6AV6 641-0BA11-0AX1
6AV2124-0UC02-0AX0
6AV63711DV174AX0
6SL32101PH252AL0
6AV21070DB030AA0
6AV2107-0DB03-0AA0
6AV2123-2MA03-0AX0
6AV6 642-0DC01-1AX1
6AV2124-0XC02-0AX0
6AV63711DV274AX0
6SL32101PH262UL0
6AV21050BA130AA0
6AV2105-0BA13-0AA0
6AV2123-2MB03-0AX0
6AV6 642-0DA01-1AX1
6AV2124-0GC13-0AX0
6AV63722DG074AA0
6SL32101PH262AL0
6AV21050DA130AA0
6AV2105-0DA13-0AA0
6AV6647-0AH11-3AX0
6AV6 643-0BA01-1AX0
6AV2124-0QC13-0AX0
6AV63722CG200BA0
6SL32101PH280UL0
6AV21050FA130AA0
6AV2105-0FA13-0AA0
6AV6647-0AA11-3AX0
6AV6 640-0BA11-0AX0
6AV2144-8GC10-0AA0
6AV63722CG200CA0
6SL32101PH280AL0
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6AV2105-0HA13-0AA0
6AV6647-0AK11-3AX0
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6AV2144-8MC10-0AA0
6AV63722CG200DA0
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6AV21050KA130AA0
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6AV6647-0AJ11-3AX0
6AV6545-0BC15-2AX0
6AV2181-8XP00-0AX0
6AV63722CG200EA0
6SL32101PH310AL0
6AV21050MA130AA0
6AV2105-0MA13-0AA0
6AV6647-0AB11-3AX0
6AV6545-0CA10-0AX0
6AV2181-4DB20-0AXO
6AV63712BD074AX0
6SL32101PH312UL0
6AV21050PA130AA0
6AV2105-0PA13-0AA0
6AV6647-0AC11-3AX0
6AV6545-0CC10-0AX0
6AV2181-4DB1O-OAXO
6AV63712BG074AX0
6SL32101PH312AL0
6AV21050RA130AA0
6AV2105-0RA13-0AA0
6AV6647-0AD11-3AX0
6AV6545-0DA10-0AX0
6AV2181-4GB00-0AX0
6AV63712BM074AX0
6SL32101PH314UL0
6AV21050TA130AA0
6AV2105-0TA13-0AA0
6AV6647-0AE11-3AX0
6AV6545-0DB10-0AX0
6AV2181-4GB10-0AX0
6AV63712BN074AX0
6SL32101PH314AL0
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6AV2107-0DB13-0AA0
6AV6647-0AF11-3AX0
6AV6542-0BB15-2AX0
6AV2181-4JBOO-0AX0/無效
6AV63712BP074AX0
6SL32101PB130UL0
6AV21042BD030BD0
6AV2104-2BD03-0BD0
6AV6647-0AG11-3AX0
6AV6542-0CA10-0AX0
6AV2181-4JB10-0AX0
6AV63712BQ074AX0
6SL32101PB130AL0
6AV21042DF030BD0
6AV2104-2DF03-0BD0
6AV3688-3AY36-0AX0
