Theory and experiment on charging and discharging a capacitor through a reverse-biased diode

Theory and experiment on charging and discharging a capacitor through a reverse-biased... The beauty of a diode lies in its voltage-dependent nonlinear resistance. The voltage ona charging and discharging capacitor through a reverse-biased diode is calculated frombasic equations and is found to be in good agreement with experimental measurements.Instead of the exponential dependence of charging and discharging voltages with time for aresistor-capacitor circuit, a linear time dependence is found when the resistor isreplaced by a reverse-biased diode. Thus, well controlled positive and negative rampvoltages are obtained from the charging and discharging diode-capacitor circuits. Thisexperiment can readily be performed in an introductory physics and electronicslaboratory. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The American Journal of Physics American Association of Physics Teachers

Theory and experiment on charging and discharging a capacitor through a reverse-biased diode

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Publisher
American Association of Physics Teachers
Copyright
© 2018 American Association of Physics Teachers.
ISSN
0002-9505
D.O.I.
10.1119/1.5026994
Publisher site
See Article on Publisher Site

Abstract

The beauty of a diode lies in its voltage-dependent nonlinear resistance. The voltage ona charging and discharging capacitor through a reverse-biased diode is calculated frombasic equations and is found to be in good agreement with experimental measurements.Instead of the exponential dependence of charging and discharging voltages with time for aresistor-capacitor circuit, a linear time dependence is found when the resistor isreplaced by a reverse-biased diode. Thus, well controlled positive and negative rampvoltages are obtained from the charging and discharging diode-capacitor circuits. Thisexperiment can readily be performed in an introductory physics and electronicslaboratory.

Journal

The American Journal of PhysicsAmerican Association of Physics Teachers

Published: Jun 21, 2018

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