DC bias scheme for field induced piezoelectric power generators

DC bias scheme for field induced piezoelectric power generators

A d.c. bias arrangement for increasing the efficiency of electrical power extraction from a piezoelectric transducer comprising a piezoelectric material, particularly of the electrostrictive type, contacted by first and second electrodes. The first electrode is connected directly to an electrical lo...

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1. Verfasser: BURNS JOSEPH R
Format: Patent
Sprache:eng
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CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
GENERATION
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description A d.c. bias arrangement for increasing the efficiency of electrical power extraction from a piezoelectric transducer comprising a piezoelectric material, particularly of the electrostrictive type, contacted by first and second electrodes. The first electrode is connected directly to an electrical load connected directly to ground potential. The second electrode is connected by two in-parallel paths to the ground potential, one of the paths comprising a d.c. voltage source in series with a large bias resistor, and the other of the paths comprising a large a.c. power bypassing capacitor.
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subjects CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
GENERATION
title DC bias scheme for field induced piezoelectric power generators
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