OVER-VOLTAGE SUPPRESSION CIRCUIT
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United States of America Patent
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Sep 24, 2015
app pub date -
Feb 6, 2015
filing date -
Mar 21, 2014
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Abstract
An overvoltage-suppression circuit includes voltage-suppression elements in series, each voltage-suppression element having at least one voltage-clamping device in parallel with at least one capacitor. An overvoltage-suppression module for protecting multiple lines includes a passive circuit element connected between a load line for each load and floating node common to all load lines. The module further includes a voltage-suppression element, having at least one voltage-clamping device in parallel with at least one capacitor, between the floating node and a ground. An overvoltage-suppression system includes a plurality of overvoltage-suppression modules. In one embodiment of the system, one input of a first overvoltage-suppression module is connected to one input of a second overvoltage-suppression module. In another embodiment of the system, one input of a first overvoltage-suppression module is connected to the floating node of a second overvoltage-suppression module.
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