Electricity and Magnetism > AC Circuits DCS# 5L30.36
LOW-PASS AND HIGH-PASS FILTERS
APPARATUS
audio generator 202-08-G
radio
 202-09-C
audio transformer 214-01-D
decade resistor 214-01-A
1 uF capacitor 101-09-I1
60 mH inductor 214-01-D
switch 101-09-C2
amplifier 202-09-B
speaker 202-09-A
oscilloscope with camera 202-08-B

DESCRIPTION
Demonstrate the effect of RC and LR low- and high-pass filters on the sinusoidal signal from an audio generator and on the music played on a tape deck.  The output is displayed on the oscilloscope and sent to an amplifier and speaker.
 
The switch allows one to send either the input or filtered output to the speaker.  Both are displayed on the scope.
 
NOTES
Use the audio transformer with the function generator.

Start with the resistance set to 1000 ohms.