Study with the several resources on Docsity
Earn points by helping other students or get them with a premium plan
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Title: 1- Transient analysis and AC Response of circuit in OrCad. 2- Transient response of RC and RL circuit. 3- Transient response of RLC circuit. 4-Measurement of capacitive reactance and impedance of a series RC circuit. 5-Measurement of inductive reactance and impedance of a series RL circuit.
Typology: Lab Reports
1 / 8
This page cannot be seen from the preview
Don't miss anything!
1
(^4) Lab 1: Transient and AC Response Analysis of a Circuit using OrCAD Pspice Figure 1. 1 : Schematic diagram of series RL circuit 1.5.3 AC Sweep: Draw the series RLC circuit in Figure 1.2. Using PSpice, perform circuit analysis in frequency domain using “AC Sweep”. Setup the frequency range to make sure to include the resonant frequency. Obtain the frequency dependence of the voltages across resistor R1, capacitor C1 and inductor L1. Use points per decade to be 1000. Obtain frequency dependence of the voltage phases. Also, obtain frequency dependence of the magnitude and phase of the current supplied by source V1. Find the resonant frequency and indicate it on the plots. Repeat for:
1.6.1 Transient Analysis of RL circuit:
5 Figure 1. 3 :Plot of Input (green) Voltage and Voltage across resistance (red). Figure 1. 4 : Measurement results of time to reach V1 and time constant From simulation the time constant of the RL circuit is τ = 400.36μs and theoretical results of time constant is τ = L R
500 = 400 μ.
7 Figure 1. 6 : Plot of phase difference of voltage across resistor Figure 1. 7 : Plot of magnitude of current supplied by source.
(^8) Lab 1: Transient and AC Response Analysis of a Circuit using OrCAD Pspice
Main purpose of our experiment was to study the transient and AC analysis of the circuit using OrCAD Pspice. Transient response is only possible when we change the input of the source so we fed the circuit with PULSE voltages. When a driving switches on or off because of transition between two different deriving states. so, the system must have the time constant to charge or discharge the passive element and time constant is the amount time required to attain approximately 63.2% of total value in voltages and currents and time constant is dependent on the value of passive elements. So we analyzed the response of circuit and the time constant. And in case RL circuit we noticed that as the resistance increases time constant decreases so the time required to attain the steady state will be less. We performed AC analysis on the RLC circuit and observed the change of magnitude and phase of output voltage w.r.t frequency, at lower frequencies circuit behaves as capacitive because capacitor has higher reactance and at higher frequencies circuit acts as inductive because inductor has higher reactance.
In this experiment we know about basics of Pspice and learn to add libraries. We learned how to built the circuit in Pspice. We performed transient and AC analysis of the circuits drawn and we get same results as we talked in theory classes. So overall we became much familiar with OrCAD Pspice 17. version.
