Jul 4, 2013 #1 T tantudaisu Member level 3 Joined Nov 18, 2010 Messages 56 Helped 8 Reputation 16 Reaction score 7 Trophy points 1,288 Activity points 1,615 Hi, I need to design an Ethernet Surge Protector. I have fond one simple and cheep circuit solution on the web: https://tyconpower.com/products/files/TP-ESP-100-POE_Surge_Protector_Spec_Sheet.pdf Can anyone advise how to select varistor Z1 and Z2? Why they are different? Some diodes i.e. D1 and D7 are connected in parallel. Can anybody explain why? - tantudaisu -
Hi, I need to design an Ethernet Surge Protector. I have fond one simple and cheep circuit solution on the web: https://tyconpower.com/products/files/TP-ESP-100-POE_Surge_Protector_Spec_Sheet.pdf Can anyone advise how to select varistor Z1 and Z2? Why they are different? Some diodes i.e. D1 and D7 are connected in parallel. Can anybody explain why? - tantudaisu -
Jul 6, 2013 #2 W westom Junior Member level 2 Joined Aug 31, 2009 Messages 21 Helped 4 Reputation 8 Reaction score 2 Trophy points 1,283 Activity points 1,581 tantudaisu said: Can anyone advise how to select varistor Z1 and Z2? Why they are different? Click to expand... View the various functions. Some are TX and RX. Low voltage. Other wires are voltage for POE. Typically greater than 48 volts.
tantudaisu said: Can anyone advise how to select varistor Z1 and Z2? Why they are different? Click to expand... View the various functions. Some are TX and RX. Low voltage. Other wires are voltage for POE. Typically greater than 48 volts.