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Unformatted text preview: a .01 uF capacitor. We used a function generator to create a sinusoidal V in with peak to peak amplitude of 10V. We ran both V in and V out through an oscilloscope. We then measured the amplitude and phase difference of V out for frequencies varying from 1/100 th of the cutoff frequency to 100 time the cutoff frequency. The cutoff frequency is predicted by the equation f o = 1/(2 RC) which in this case was 1.59 KHz. Our graphs show that around the cutoff frequency is where the voltages first begin to change. With the lowpass filter, once you get above f o , the higher the frequency the lower the amplitude. With the highpass filter it is exactly the opposite. Once you get below the cutoff frequency the amplitude begins to shrink. This is exactly what we predicted would happen....
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This note was uploaded on 04/14/2008 for the course PHYSICS 331 taught by Professor Adler during the Spring '08 term at St. Mary MD.
 Spring '08
 Adler
 Electronics

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