Electro-optic terminal protection system with matching stub
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United States of America Patent
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Sep 20, 2016
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N/A
app pub date -
Oct 14, 2014
filing date -
Jan 21, 2013
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Abstract
Apparatus for protecting a device from transients. The apparatus includes a switching network and a transmission line electrically connecting an input to an output. The switching network includes a stub connected near the input with a detector at the other end, a switch, and a communication path therebetween. The detector detects a transient and communicates with the switch. The switch then actuates to place a low impendence across the output of the transmission line, thereby attenuating the transient. The switching network has a switching time that equals the sum of the times to detect the transient at the input, transmit a signal corresponding to the detection to the switch, and actuate the switch. The input signal travels from the input to the output along the transmission line, which has a propagation delay. The propagation delay is greater than the stub propagation time plus the switching time of the switch network.
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