Field Device having a Protection Circuit
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United States of America Patent
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Issued Date -
Mar 10, 2016
app pub date -
Feb 17, 2014
filing date -
Apr 11, 2013
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Abstract
A field device comprising a protection circuit between a communication interface and a signal processing unit. A communication interface is preferably an Ethernet connection of the field device, wherein between the communication interface and the signal processing unit a first system is provided, which serves for electrical current limiting, wherein between the first system for electrical current limiting and the signal processing unit a means is provided, which serves for voltage limiting, and wherein between the means for voltage limiting and the signal processing unit a second system is provided, which serves for energy limiting.
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