Pratik kamble at 12:56, 20 February 2017

2017-02-20T12:56:54Z

Sandhya.np14 at 04:47, 12 July 2016

2016-07-12T04:47:22Z

Ranjana at 12:31, 19 June 2016

2016-06-19T12:31:08Z

Sandhya.np14 at 10:06, 17 May 2016

2016-05-17T10:06:58Z

Sandhya.np14 at 10:05, 17 May 2016

2016-05-17T10:05:37Z

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Sandhya.np14 at 05:40, 13 May 2016

2016-05-13T05:40:27Z

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Pratik kamble: Created page with "{| border=1 |'''Time''' |'''Narration''' |- |00:01 | Hello everyone.Welcome to this tutorial on '''Diode, Rectifier and Transistor'''. |- |00:08 |In this tutorial we will st..."

2016-05-05T12:38:20Z

Created page with "{| border=1 |'''Time''' |'''Narration''' |- |00:01 | Hello everyone.Welcome to this tutorial on '''Diode, Rectifier and Transistor'''. |- |00:08 |In this tutorial we will st..."

New page

{| border=1
|'''Time'''
|'''Narration'''

|-
|00:01
| Hello everyone.Welcome to this tutorial on '''Diode, Rectifier and Transistor'''.

|-
|00:08
|In this tutorial we will study:

* Working of PN Junction diode

* Diode as rectifier

* Diode IV characteristics

* Light emitting diode(LED) IV characteristics

* Out of Phase inverting amplifier and

* Transistor CE

|-
|00:26
|Here I am using,

* ExpEYES version 3.1.0

* Ubuntu Linux OS version 14.04

|-
|00:36
|To follow this tutorial, you should be familiar with:

'''ExpEYES Junior''' interface.If not, for relevant tutorials, please visit our website.

|-
|00:47
|Let's first define a '''PN junction diode'''.

|-
| 00:51
|'''PN junction diode''',

* is a semiconductor device which allows current to pass through in one direction.

* It converts alternating current to direct current.
|-
|01:03
|We will demonstrate working of '''PN junction diode''' as a '''half wave rectifier'''.

|-
|01:09
|In this experiment, we will,

* Convert AC signal into a DC signal in '''forward bias'''

* Convert AC signal into a DC signal in '''reverse bias'''

* Filter the AC component using a capacitor.

|-
|01:25
|Now I will explain the circuit connections.

'''1K''' resistor is connected between '''GND''' and '''A2'''.

'''PN junction diode''' is connected between '''A2''' and '''SINE'''.

'''SINE''' is connected is to '''A1'''. Here '''SINE''' is an '''AC''' source.

This is the circuit diagram.

|-
|01:46
|Let's see the result on the Plot window.

|-
|01:49
|On the Plot window, click on '''A1''' and drag to '''CH1'''.'''A1''' is assigned to '''CH1'''.

|-
|01:56
|Click on '''A2''' and drag '''CH2'''.'''A2''' is assigned to '''CH2'''.

|-
|02:01
|Move the '''mSec/div''' slider to adjust the waves.Two sine waves are generated.

|-
|02:10
|Black trace is the original sine wave.

|-
|02:13
|Red trace is the rectified sine wave.Negative half of red trace is completely removed, as it is a '''rectified wave'''.

|-
|02:23
|Positive half starts after diode attains a '''threshold voltage'''.'''AC''' signal gets converted into a '''DC''' signal, in the '''forward bias'''.

|-
|02:34
|Click on '''CH1''' and drag to '''FIT'''.
Click on '''CH2''' and drag to '''FIT'''.

|-
|02:40
|Observe the voltage and frequency values on the right side of the window.

|-
|02:45
|On reversing the diode connection, '''AC''' signal gets converted into a '''DC''' signal, in the '''reverse bias'''.

|-
|02:52
|We will filter the sine wave using a '''10uF'''(micro farad) capacitor.In the same connection, replace '''1K''' resistor with a '''10uF'''(micro farad) capacitor.

|-
|03:04
|This is the circuit diagram.

|-
|03:06
|Let's see the result on the '''Plot window'''.

|-
|03:09
|On the '''Plot window''' we can see that '''rectified sine wave''' is filtered.Here '''AC''' component is called '''ripple''' in the '''DC'''.

|-
|03:20
|Now we will demonstrate diode IV characteristics of:

* PN junction diode and LEDs

|-
|03:27
|I will explain the circuit connections.'''PVS''' is connected to '''IN1''' through '''1K''' resistor.

|-
|03:34
|'''IN1''' is connected to '''GND''' through '''PN junction diode'''.

|-
|03:39
|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 '''Diode IV'''.

|-
|03:53
|'''EYES:IV characteristics''' and '''Schematic''' windows open.'''Schematic''' window shows the circuit diagram.

|-
|04:00
|On EYES:IV characteristics window, click on START button.

|-
|04:05
|Current initially remains constant but rises as voltage increases to 0.6 volts.

|-
|04:13
|Click on '''FIT''' button.

|-
|04:16
|'''Diode equation''' and '''Ideality factor''' are displayed.'''Diode's ideality factor''' varies between 1 and 2.

|-
|04:26
|We will replace diode with red, green and white '''LEDs''' one by one in the circuit.

|-
|04:33
|Please note '''LED''' glows in only one direction.If it does not glow, turn to opposite direction and connect again.

|-
|04:43
|Let's first connect red '''LED''' in the circuit.This is the circuit diagram.

|-
|04:49
|On the '''Plot window''', click on '''EXPERIMENTS''' button.Select '''Diode IV'''.

|-
|04:56
|On '''EYES:IV characteristics''' window, click on '''START''' button.
In the '''diode IV''' curve, current initially remains constant but rises as voltage increases to '''1.7 volts'''.

|-
|05:11
|Let's connect green '''LED''' in the circuit.

|-
|05:15
|On the '''Plot window''', click on '''EXPERIMENTS''' button.Select '''Diode IV'''.

|-
|05:22
|On '''EYES:IV characteristics''' window, click on '''START''' button.

|-
|05:27
|In the diode IV curve,current initially remains constant but rises as voltage increases to '''1.8 volts'''.Here the value may vary a little.

|-
|05:40
|Let's connect white '''LED''' in the circuit.

|-
|05:44
|On the '''Plot window''', click on '''EXPERIMENTS''' button.Select '''Diode IV'''.

|-
|05:51
|On '''EYES:IV characteristics''' window, click on '''START''' button.
In the diode IV curve, current initially remains constant but rises as voltage increases to '''2.6 volts'''.

|-
|06:05
|Now we will demonstrate 180 degree out of Phase sine waves.

|-
|06:10
|We can do this by inverting the output of '''SINE''' using an amplifier.Here we are using '''51K''' resistor for the amplification.

|-
|06:21
|I will explain the circuit connections.

|-
|06:24
|'''A1''' is connected to '''SINE'''.'''51K''' resistor is connected between '''SINE''' and '''IN'''.
'''OUT''' is connected to '''A2'''.

|-
|06:35
|This is the circuit diagram.

|-
|06:37
|Let's see the result on the '''Plot window'''.

|-
|06:40
|On the '''Plot window''', click on '''A1''' and drag to '''CH1.'''A1''' is assigned to '''CH1'''.

|-
|06:49
|Click on '''A2''' and drag '''CH2'''.
'''A2''' is assigned to '''CH2'''.

|-
|06:54
|Move the '''mSec/div''' slider to adjust the waves.Two '''AC waveforms''' differing in phase by 180 degree are generated.

|-
|07:04
|Click on '''CH1''' and drag to '''FIT'''.
Click on '''CH2''' and drag to '''FIT'''.

|-
|07:10
|Voltage and frequency values are displayed on the right side.

|-
|07:15
|Right click on '''CH1'''.Voltage, frequency & Phase shift values are displayed at the bottom of the window.

|-
|07:25
|Now we will '''plot transistor CE(collector emitter)''' characteristic curves.

|-
|07:31
|* Please use 2N2222, NPN transistor.Solder the wires of the transistor.So that transistor can be connected properly to the '''ExpEYES''' kit.

|-
|07:44
|I will explain the circuit connections.
'''SQR1''' is connected to '''200K''' resistor.
'''200K''' resistor is connected to '''base''' of the transistor.

|-
|07:56
|'''PVS''' is connected to '''collector''' using a '''1K''' resistor.'''IN1''' is connected between '''1K''' resistor and '''collector'''.

|-
|08:06
|'''Emitter''' is connected to GND.
'''100uF'''(micro farad) capacitor is connected between '''200K''' resistor and '''GND'''. This is the circuit diagram.

|-
|08:18
|Let's see the result on the '''Plot window'''.

|-
|08:21
|On the '''Plot window''', '''Set PVS''' value as '''3 volt'''.'''PVS''' is set to '''3volts''' to provide internal voltage.

|-
|08:31
|Click on '''EXPERIMENTS''' button and select '''Transistor CE'''.

|-
|08:37
|'''EYES Junior: Transistor CE characteristics''' and '''Schematic''' windows open.
'''Schematic''' window shows circuit diagram.

|-
|08:47
|On the EYES Junior: Transistor CE characteristics window, change the base voltage value to 1V.

|-
|08:55
|Click on '''START''' button.Collector current increases and becomes constant.
Collector current is close to '''0.3mA'''.Base Current is '''2uA'''(micro ampere).

|-
|09:10
|Change the base voltage value to '''2V''' and click on '''START''' button.Collector current is '''1.5mA'''

|-
|09:19
|Base Current is '''7uA'''(micro ampere).

|-
|09:23
|Change the base voltage value to '''3V''' and click on '''START''' button.Collector current is '''2.7mA'''

|-
|09:33
|Base Current is '''12uA'''(micro ampere).

|-
|09:37
|Let's summarize.

|-
|09:38
|In this tutorial we have studied:

* Working of PN Junction diode

* Diode as rectifier

* Diode IV characteristics

* LED IV characteristics

*Out of Phase inverting amplifier and

* Transistor CE

|-
|09:58
|As an assignment,

* Measure the intensity of light and its variation from the source.

* This is the circuit diagram.

* The output should look like this.

|-
|10:13
|This video summarises the Spoken Tutorial project.If you do not have good bandwidth, you can download and watch it.

|-
|10:21
|We conduct workshops using Spoken Tutorials and give certificates. Please contact us.

|-
|10:28
| Spoken Tutorial Project is funded by NMEICT, MHRD Government of India.

|-
|10:34
|This tutorial is contributed by Kaushik Datta and Madhuri Ganapathi. Thank you for joining.

|}

@@ Line 10: / Line 10: @@
 |00:08
 |In this tutorial, we will study:
-* Working of '''PN Junction diode'''
+'''Diode''' as '''rectifier'''
-* '''Diode''' as '''rectifier'''
+'''Diode IV''' characteristics
-* '''Diode IV''' characteristics
+'''Light emitting diode (LED) IV''' characteristics
-* '''Light emitting diode (LED) IV''' characteristics
+'''Out of Phase inverting amplifier''' and
-* '''Out of Phase inverting amplifier''' and
+'''Transistor CE'''.
-−
-* '''Transistor CE'''.
 |-
 |00:26
 |Here, I am using:
 '''ExpEYES''' version 3.1.0
-* '''ExpEYES''' version 3.1.0
+'''Ubuntu Linux OS''' version 14.04.
-−
-* '''Ubuntu Linux OS''' version 14.04.
 |-
@@ Line 43: / Line 40: @@
 | 00:51
 |'''PN junction diode''':
 |-
 |01:03
@@ Line 54: / Line 50: @@
 |01:09
 |In this experiment, we will:
 Convert '''AC signal''' into a '''DC signal'''  in '''forward bias'''
-* Convert '''AC signal''' into a '''DC signal'''  in '''forward bias'''
+Convert '''AC signal''' into a '''DC signal'''  in '''reverse bias'''
 '''Filter''' the '''AC''' component using a '''capacitor'''.
-* Convert '''AC signal''' into a '''DC signal'''  in '''reverse bias'''
-−
-* '''Filter''' the '''AC''' component using a '''capacitor'''.
 |-
@@ Line 351: / Line 344: @@
 |In this tutorial, we have studied:
-* Working of PN Junction diode
+Working of PN Junction diode
-* Diode as rectifier
+Diode as rectifier
-* Diode IV characteristics
+Diode IV characteristics
-* LED IV characteristics
+LED IV characteristics
-* Out of Phase inverting amplifier and
+Out of Phase inverting amplifier and
-* Transistor CE.
+Transistor CE.
 |-

@@ Line 27: / Line 27: @@
 |Here, I am using:
-* '''ExpEYES''' version '''3.1.0'''
+* '''ExpEYES''' version 3.1.0
-* '''Ubuntu Linux OS''' version '''14.04'''.
+* '''Ubuntu Linux OS''' version 14.04.
 |-

@@ Line 155: / Line 155: @@
 |-
-|03:53
+|03:51
 |'''EYES:IV characteristics''' and '''Schematic''' windows open. '''Schematic''' window shows the circuit diagram.

@@ Line 17: / Line 17: @@
 * '''Diode IV''' characteristics
-* '''Light emitting diode(LED) IV''' characteristics
+* '''Light emitting diode (LED) IV''' characteristics
 * '''Out of Phase inverting amplifier''' and