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RC Circuit Response Analysis

This document is a lab report for a circuits course at AL Maaref University. It details an experiment to observe the response of an RC circuit, where students are asked to construct an RC circuit, apply a square pulse generator, and observe the voltage response on an oscilloscope. They then measure the time constant using the 63% decay method and record their results.

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65 views3 pages

RC Circuit Response Analysis

This document is a lab report for a circuits course at AL Maaref University. It details an experiment to observe the response of an RC circuit, where students are asked to construct an RC circuit, apply a square pulse generator, and observe the voltage response on an oscilloscope. They then measure the time constant using the 63% decay method and record their results.

Uploaded by

Mhmd Rh
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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AL Maaref University

Faculty of Engineering

Course code: EEE210L Course Title: Circuits I

Experiment Title: The response of RC network (Lab 7)

Instructor: Dr. Fatima Mazeh

Students Name: Jawad Ayash 10120110


Hadi Fadel 10120192
Mohamad Ali Charafeddine 10120286

Date of Testing: Friday, Dec 3, 2021


Date of Submission: Friday, Jan 14, 2022
1- Objective
Observing the response of the first order R-C and R-L circuits.

2- Theoretical Background/literature review


The natural response of an R-C circuit can be expressed as
1
− 𝑡
𝑉𝑐 (𝑡) = 𝑉𝑐 (∞) + ( 𝑉𝑐 (0) − 𝑉𝑐 (∞)) 𝑒 𝑅𝐶 for t ≥ 0

3- Test Procedure
3-1 Test Setup

3-2 Materials and Equipments


• Scope
• Function generator
• Power supply
• Resistors
• Caps
• Inductors

3-3 Tasks
• Construct the R-C circuit of Figure 1.
• Apply the square pulse generator to produce a periodic response of the circuit that
appears clearly on the oscilloscope. The period of the source is adjusted to be at least 10-
20 times higher than the calculated time constant of the circuit. This is necessary, so that
the capacitor reaches steady state, in both charging and discharging intervals.
• Show current & voltage plots on the oscilloscope.
• Measure the circuit time constant by the 63% decay method described above. Plot on a
millimeter paper OR take copy of the scope plot over one period of the voltage and
current response. Use appropriate scale. Label the axes. Transfer measurements from the
oscilloscope to the paper or to an excel sheet.

4- Results

1
− 𝑡
V(t) = E – E 𝑒 𝑅𝐶

time constants ꞇ = RC = 500*0.1 = 5*10−5

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