TEMPORARY ENERGY STORAGE FOR VOLTAGE SUPPLY INTERRUPTIONS
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United States of America
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Sep 21, 2017
app pub date -
Jun 6, 2016
filing date -
Jun 6, 2016
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Abstract
In one form, a capacitor voltage limiter (240), comprises a supply node (244), a pass element (242) having a first current electrode coupled to the supply node (244), a control electrode, and a second current electrode. The second current electrode is adapted to be coupled to an external storage capacitor (250). Additionally, the capacitor voltage limiter includes an amplifier having a non-inverting input for receiving a reference voltage, and an inverting input coupled to the second current electrode of the pass element (242). The amplifier includes an output coupled to the control electrode of the pass element (242). The capacitor voltage limiter also includes a rectifier (241) having an input coupled to the second current electrode of the pass element (242), and an output coupled to the first current electrode of the pass element (242).
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