Scribd
Upload
51 views5 pages

MNS University of Engineering and Technology, Multan

This document summarizes an experiment on implementing a high-pass filter using an inductor. A high-pass filter passes high frequencies and rejects low frequencies. The experiment used a function generator, inductor, resistor, and CRO to build an RL series circuit high-pass filter. Measurements of the output voltage were taken at various frequencies and the transfer function and gain in dB were calculated. The cutoff frequency where the output was 70% of the maximum was measured to be 158kHz. The results showed the high-pass filter passing high frequencies and blocking low frequencies as expected.

Uploaded by

Jessica Lauren
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
51 views5 pages

MNS University of Engineering and Technology, Multan

This document summarizes an experiment on implementing a high-pass filter using an inductor. A high-pass filter passes high frequencies and rejects low frequencies. The experiment used a function generator, inductor, resistor, and CRO to build an RL series circuit high-pass filter. Measurements of the output voltage were taken at various frequencies and the transfer function and gain in dB were calculated. The cutoff frequency where the output was 70% of the maximum was measured to be 158kHz. The results showed the high-pass filter passing high frequencies and blocking low frequencies as expected.

Uploaded by

Jessica Lauren
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
You are on page 1/ 5

MNS University of Engineering and

Technology, Multan.
Assignment of lab of electric circuits

Submitted by:
Shah Rukh EE-715-2016

Faizan Nasir EE-713-2016

Ammar Hamza EE-716-2016

Affan Hameed EE-718-2016


[DEPARTMENT OF ELECTRICAL ENGINEERING]

Submitted to:
Mrs. Humaira Munir
Experiment#11
Objective:Implementation of High Pass filter using an
Inductor.
Apparatus:CRO, Function generator,inductor,resistor.
RL Series circuit:
•A Circuit in which a resistor and a inductor are connected in series with
the Voltage/Current source it is called RL Series circuit.
•A filter is a circuit that is designed to pass signals with desired
frequencies and reject or attenuate others.
A highpass filter passes high frequencies and rejects low frequencies.

•A highpass filter is designed to pass all frequencies above its cutoff


frequency.
•The half-power frequency, which is
equivalent to the corner frequency on the Bode plots but in the context
of filters is usually known as the cutoff frequency is obtained
by setting the magnitude of H(ῳ) equal to 0.707.

•Where H(ῳ) is transfer function.

Procedure:
•We set the apparatus according to the given circuit in fig(11.1).
•We gave voltage of 10v to the circuit.
•Then find the cutoff frequency at 7.2 volt which was 70% of maximum
value.
•Then we take different values of voltage at different frequencies.
•We calculate the transfer function by using formula V0/Vin.
•Also calculate the values of V0/Vin in db(desi bel).
•We also saw the wave form on CRO

•Cutoff frequency is 158kHz


•Input voltage = 10V
Observations & Calculations:

No. of Frequency(f) Vout Vout/Vin Gdb=


observations kHz 20log Vout/Vin

1 91.5 4 0.4 -7.95


2 98.5 4.4 0.44 -7.13
3 105 4.8 0.48 -6.37
4 119 5.4 0.54 -5.35
5 140 6.4 0.64 -3.8
6 158 7.2 0.72 -2.85
7 190 8.4 0.84 -1.51
8 207 9 0.9 -0.92
9 222 9.6 0.96 -0.35
10 242 10 0.10 0
Wave form of High Pass filter:

Graph between frequency and transfer function

Results:
We learnt that how high pas filter works and blocks low frequencies .

You might also like