ExpEYES/C3/Transient-Response-of-Circuits/English-timed

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Time Narration
00:01 Hello everyone. Welcome to this tutorial on Transient Response of circuits.
00:08 In this tutorial, we will study:
  • Transient response of RC, RL and LCR circuits
  • Under damped discharge of LCR circuit
  • RC integration and Differentiation.
00:24 Here, I am using:
  • ExpEYES version 3.1.0
  • Ubuntu Linux OS version 14.10.
00:33 To follow this tutorial, you should be familiar with ExpEYES Junior interface. If not, for relevant tutorials, please visit our website.
00:44 Let's first define transient Response of a circuit.
00:49 Transient Response is- how a circuit responds to stored energy in capacitors or inductors.

The stored energy in a capacitor or an inductor can be dissipated by a resistor.

01:03 Now we will demonstrate transient Response of RC circuit.
01:07 In this experiment, we will:
  • Plot Step up and Step down voltage curves of RC circuit.
  • Measure RC in milli seconds.
01:18 To perform this experiment, OD1 is connected to A1 through 1K resistor.
01:24 1uF (one micro farad) capacitor is connected between A1 and ground (GND).

This is the circuit diagram.

01:34 Let's see the result on the Plot window.
01:36 On the Plot window, click on EXPERIMENTS button. Select RC Circuit.
01:43 Transient response of RC Circuit and Schematic windows open.

Schematic window shows RC Circuit Transient.

01:52 On the Transient response of RC Circuit window, click on 0 to 5V STEP button.

'Step up' voltage curve is displayed.

02:03 Then click on 5 to 0V STEP button. Step down voltage curve is displayed.
02:11 Click on Calculate RC button. RC = 1.14 msec is displayed.
02:20 Click on Clear button to clear the window.
02:24 Click on CC Charge button. A horizontal trace is seen at 4.5 volts.
02:31 Next, we will show:
  • Charging of capacitor with constant current and
  • Measure RC in milli seconds.
02:41 In the circuit, we will connect 1K resistor to CCS instead of OD1. This is the circuit diagram.
02:51 Click on CLEAR button to clear the window.
02:55 Click on CC Charge button. Voltage across the capacitor rises exponentially.
03:03 Click on Calculate RC button. Value of RC= 5.81 mSec is displayed.
03:12 Now we will demonstrate transient Response of RL circuit.
03:17 In this experiment, we will:
  • Plot Step up and Step down voltage curves of RL and
  • Measure R/L.
03:26 In this experiment,

IN1 is connected to OD1.

OD1 is connected to A1 through 1K resistor.

A1 is connected to GND through a coil.

03:38 This is the circuit diagram.
03:41 Let's see the result on the Plot window.
03:44 On the Plot window, click on EXPERIMENTS button. Select RL Circuit.
03:51 Transient response of RL Circuit and Schematic windows open.

Schematic window shows RL Circuit Transient.

04:02 On the Transient response of RL Circuit window, click on 0 to 5V STEP button.

'Step up' voltage curve is displayed.

04:12 Click on 5 to 0V STEP button. Step down voltage curve is displayed.
04:20 Click on Calculate R/L button to display the values.
04:26 L/R value is = 0.083mSec (milli second).

Rind value is =529 Ohm.

04:35 Inductor value i s =127.6mH(milli henry).

Here- 'R' is resistance, 'L' is inductance and 'Rind' is resistance of the inductor.

04:50 As an assignment, plot voltage curves of RL circuit using two coils connected in series.
04:57 Now, we will show under damped discharge of LCR circuit.
05:02 In this experiment, OD1 is connected to A1 through a coil.
05:07 A1 is connected to GND through 0.1uF (0.1 micro farad) capacitance. This is the circuit diagram.
05:15 Let's see the result on the Plot window.
05:18 On the Plot window, click on EXPERIMENTS button. Select RLC Discharge.
05:25 EYES Junior: RLC Discharge window and Schematic windows open. Schematic window shows RLC Circuit Transient.
05:35 On the EYES Junior: RLC Discharge window, click on 5->0V STEP button. Step down voltage curve is displayed.
05:45 Move the mS/div slider and click on 5->0V STEP button. Under damped discharge curve is displayed.
05:55 Click on FIT button to display the values.

Resonant Frequency = 1.38 KHz and Damping = 0.300.

06:08 As an assignment-

Plot over damped discharge of LCR circuit using a 2K resistor. This is the circuit diagram.

06:18 Now ,we will demonstrate RC integration.
06:21 In this experiment, we will transform a square wave into a triangular wave.
06:28 Here, SQR2 is connected to A1 through 1K resistor. This is the circuit diagram.
06:34 Let's see the result on the Plot window.
06:38 On the Plot window, set SQR2 to 1000 Hz. Click on SQR2 check-box.
06:45 Move the frequency slider.
06:48 Move the mSec/div slider to adjust the wave. A square wave is generated.
06:56 In the same connection, connect A1 to GND through 1uF (one micro farad) capacitor. This is the circuit diagram.
07:05 A triangular wave is generated. A square wave is transformed to a triangular wave when RC is integrated.
07:14 Click on XMG button to show the Grace plot of the triangular wave.
07:20 Now, we will demonstrate RC differentiation.
07:24 In this experiment we will transform a square wave to a narrow spikes wave.
07:31 In this experiment, SQR2 is connected to A1 through 1uF (one micro farad) capacitor. This is the circuit diagram.
07:40 Let's see the result on the Plot window.
07:43 A square wave is generated.
07:43 In the same connection, connect A1 to GND through 1K Resistor. This is the circuit diagram.
07:55 On the Plot window, set SQR2 to 100 Hz.
08:00 Move the mSec/div slider to adjust the waves. A narrow spikes wave is generated.
08:08 A square wave is transformed to a narrow spikes wave when RC is differentiated.
08:15 Click on XMG button to show the Grace plot.
08:19 Let's summarize.
08:21 In this tutorial, we have studied:
  • Transient response of RC, RL and LCR circuits
  • Under damped discharge of LCR circuit
  • RC integration and Differentiation.
08:36 This video summarizes the Spoken Tutorial project. If you do not have good bandwidth, you can download and watch it.
08:44 We conduct workshops using Spoken Tutorials and give certificates. Please contact us.
08:51 The Spoken Tutorial project is funded by NMEICT, MHRD, Government of India.
08:57 This tutorial is contributed by Kaushik Datta and Madhuri Ganapathi.

Thank you for joining.

Contributors and Content Editors

Pratik kamble, Ranjana, Sandhya.np14