RLC Discharge Transient response of RLC circuits

schematic

Schematic

screenshot

Screenshot

photo

Photograph

Animation : Click to play

Introduction

  • A voltage step from 5V to 0V is applied to a series LCR circuit, and the voltage across the capacitor is recorded.

  • The inductor used is a coil with around 125 mH of inductance, and 550 Ohms of coil resistance.

  • If the response shows that it is under-damped, series resistance may be added to increase damping.

Analysis

  • Drag the blue region to select a portion of the graph, and click on the ‘Fit data’ button to fit it with a damped sine function