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Title of Journal: Analog Integr Circ Sig Process

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Abbravation: Analog Integrated Circuits and Signal Processing

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Springer US

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DOI

10.1007/s10616-011-9382-5

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ISSN

1573-1979

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A selfpowered power conditioning circuit for batt

Authors: Gengchen Liu Rodrigo Fuentes Hur Koser Tolga Kaya
Publish Date: 2015/04/04
Volume: 83, Issue: 2, Pages: 203-207
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Abstract

A controllable power conditioning circuit is proposed for batteryfree energy harvesting applications The circuit is designed for piezoelectric energy harvester applications and it has only 11 transistors and consist a simple feedback loop and switched capacitor that conditionally allows the power to be applied to the load circuit to be powered in this case The area and powerefficient digital design that does not include any inductors makes the topology easy to apply to any lowpower sensor applications The power conditioning circuit relies on a digital Schmitt trigger that controls the voltage threshold values of the power supply where the load circuit would operate within The hysteresis hence the threshold levels were set to 435 and 710 mV and the overall energy conversion efficiency is around 65  The theory of the piezoelectric harvester was also studied

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