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???
07/02/10 07:22
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#177048 - PCB "Spark Gaps"
Responding to: ???'s previous message
Stefan Kanev said:
For example i saw Ethernet cards, used for PC to WAN connection with cable 5..10 meters long, which going OUT of home

When you take the cable outside the building, you have to start thinking about lightning strikes, etc...

Michael Karas describes a technique to make protective spark-gaps on the PCB:
http://www.carousel-design.com/SparkGap.html

I have seen this technique used on equipment that has "general purpose" user inputs...

List of 11 messages in thread
TopicAuthorDate
Protect ethernet MCU and Hubs            01/01/70 00:00      
   Transformer isolation            01/01/70 00:00      
      HVAC injected            01/01/70 00:00      
         More info please            01/01/70 00:00      
         Clarify "HVAC"?            01/01/70 00:00      
         see it carefully            01/01/70 00:00      
            PCB "Spark Gaps"            01/01/70 00:00      
               RE:            01/01/70 00:00      
                  make Your side            01/01/70 00:00      
                     RE2:            01/01/70 00:00      
               agree            01/01/70 00:00      

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