Northwestern Physics Demos                                 Go back to Electricity   
DCS# 5F20.64NWU# E-29 Location:    11 A 2
title: Relaxation Oscillator
aka:  RC circuit

Large Neon bulb will flash about once per second with the 1 MFD capacitor in the circuit.  With the 2 MFD capacitor, it will flash at a lower rate.  Close both switches to make a 3 MFD capacitor.

   How does the time period of the flashing bulb depend on the capacitor size?
pix of set up