Oscillations and Waves > Oscillations > Beats DCS# 3B60.20

BEATS BETWEEN TWO FUNCTION GENERATORS


 


APPARATUS
two function generators 202-08-G
amplifier 202-09-B
two speakers next to 202-13
oscilloscope with camera, if desired
202-cart


DESCRIPTION
Demonstrate beats by tuning the two oscillators to nearly equal frequencies.  The output is sent to a speaker and shown on a scope.  Show that varying one of the oscillator frequencies changes the beat frequency.

NOTES

At least one of the function generators should have good fine tuning control.  Set the amplitudes equal to each other.