30-06-2012, 02:18 PM
To plot the frequency response of constant-k high pass filter.
To plot the frequency response of constant-k high pass filter..docx (Size: 19.09 KB / Downloads: 27)
THEORY:
A high pass filter is one, which passes high frequencies from cut-off frequency and attenuates the rest of frequencies. Constant-k high pass filter can be obtained by changing the positions of series and shunt arms of the networks shown in the
PROCEDURE:
1. Connect sine wave generator at the input of the filter. Adjust sine wave amplitude to 5Volt p-p. Keep the input voltage constant throughout the experiment.
2. Connect CRO at the output of the filter.
3. Vary the input frequency from minimum to 10 KHz in proper steps in sine wave generator and every time note the input frequency and corresponding output voltage from the CRO in the observation table.
4. Plot the graph between input frequency & Output Voltage taking input frequency (in Hz) on x-axis and output voltage (in Volts) on y- axis on semi log graph paper.
5. Calculate the cut-off frequency from the formula as well as from the graph.