Network isolator

Network isolators are installed as part of a wired <a href="/facts/Ethernet/nMfhU8tU">Ethernet</a> system as <a href="/facts/Galvanic_isolation/IMQkwezo">galvanic isolators</a> to reduce the potential for <a href="/facts/Electrical_injury/LmUdx0Ew">electrical injury</a> and limit the extent of damage due to <a href="/facts/Lightning/dLTuxz8n">lightning</a> strikes.
Through the applied principle of <a href="/facts/Electromagnetic_induction/T36JjtgY">electromagnetic induction</a>, network data is transmitted across an electrically non-conducting barrier. High frequency <a href="/facts/AC_voltage/qxICS3xa">AC voltages</a> conveying <a href="/facts/Data_(computing)/cPjfFHph">data</a> are <a href="/facts/Transformer/EYYfXWrF">induced</a> across an isolating gap. 
The network isolator is a <a href="/facts/Passive_device/7oDeoqd3">passive device</a>, and functions without any requirement of an external power supply. A functional equivalent to network isolators is Ethernet over a small stretch of <a href="/facts/Optical_fibre/5ruuIFbj">optical fibre</a>, using media converters or Ethernet switches/network cards with fiber connections on each end.

Network isolator open-in-new

Network isolator