PIRA 5J30.10 - LRC Circuits - DC: LRC Ringing

• Circuit components are mounted on a panel and fitted with a rotary switch for easy selection between different R values.
  

• Before testing the first R value, 0 ohms, push the reset button on the scope. It will reset the trigger as well.
  

• Push the knife switch momentarily to the right to charge the capacitor and quickly bring it back all the way to the left position to observe the discharge process.

• Switch rotary switch to the second R value before deftly pushing the tiny trigger reset button, if you wish to preserve the first screen to have multiple traces on the scope. - If not, just push the clear button and the screen will clear

• Repeat the process for momentarily charging then discharging the capacitor.
  

• A gooseneck TV camera is used to show the scope screen on the classroom monitors.

Photo Shows the Demonstration Used by the University of Texas at Austin.

Drawing is by Courtesy of the University of Minnesota.

Last Updated 3/99 - University of Texas at Austin Physics Dept. - All Rights Reserved.