INTRODUCTION TO BASIC ELECTRONICS WITH WORKSHOP

FOR A/L SCIENCE STUDENTS

GROUP MEMBERS Nishanth A. (E/09/239)

Supervised by Dr. Roshan Ragel Rishikesan S. (E/09/297)

Objectives of the Project

To increase the interest of students in practical thinking by working themself through the experiments.

To increase the interest in subjects by relating the theoretical knowledge to the practical.

Procedure of our of social project

Project plan

Permission for the project

Permission from the school

Work plan

Work Plan

Develop simple line flowing robot circuit with working condition, fault detection in the developed circuits.

Reduce the difficulty for students who are doing the project by proper select the circuit design.

Buy the parts we needed. Build model and check that. Build the mechanical model for fix the circuit

for all the circuits developed by students. Build the track for checking. Collect the other equipment’s we

needed(multimeter, bouth)

First we cleaned the physics laboratory and arranged them for access the practical sessions easily and take the list of equipment’s available in that how many is in working condition.

According to the electronics basic practical’s we arrange presentation for introducing the practical things available in market.

Do the basic practical by separate the students in groups.

Develop the simple line flowing robot step by step by understanding the basic principle behind that

Fault detection and then check in the track.

Feedback from students

Positive Comments

• Were thankful for conducting the practical free of charge.

• This practical are very helpful to us, wanted to continue for other sections.

• Wanted us to continue conducting this event in the future and were willing to help us to do so.

Negative Comments

Had difficulties in being present for the practical’s specially the students residing farm from school at Saturday and Sunday.

Students’ suggestions

 Wanted us to conduct other physics experiments.

 Suggested that providing them with the practical instruction sheet.

Wanted to teach about the PCB design software.

Results

We have successfully arranged the lab and finished the practical sessions. And let the students to complete the line following robot.

Final checking on the track Working condition

Team 1 worked

Team 2 Not fully worked

Conclusion

Most of the students are interested in theoretical studies for A/L examination. That's why students didn’t have practical knowledge. After our session they have got the basic electronic practical knowledge. This may guide them for innovative way.

Thank You

Discussion

அடிப்படை�இலத்தி�ரனி�யல்

ஓமி�ன்வி�தி� விடைரவி�லக்கணம்

தடை�யோ��ன்றிற்குக்குறுக்கா�ன மி�ன்யோ��ட்�மி�னது அதனூ��னஅழுத்தயோ�றுபா�ட்டிற்கு யோ�ர்��கா�தசமின�கும்

ஓமி�ன்வி�தி� ...

வி�ய்ப்புப் ப�ர்க்க ……...

Vα I

V=IR

இருவி�ய�

இருவி�ய�....

இருவி�ய�....

இருவி�ய� மி�ன்னி�யல்ந�த்டைதிடையத்துண�தில்

இருவி�ய�....

இருவி�ய�விடைககள்

LED LDR

Zenor Diode

ஒளி� க�லும்இருவி�ய�யும் (LED) ஒளி�யுணர் திடை�யும் (LDR)

LED and LDR வி�ய்ப்புப் ப�ர்த்தில்

மூவி�ய� (Transistor)

பொபா�துஅடி(Common Base)

மூவி�ய�ஒழுங்கடைமிப்பு

When the base is used as the common terminal, the transistor will have a low input impedance, high output impedance, unity (or less) current gain and high voltage gain. This configuration also realizes the best high frequency performance, and finds dominant use in RF amplifiers and high frequency circuits

பொப�துசே+கர�ப்ப�ன்(Common Collector)

This last configuration is also commonly known as the emitter follower. This is because the input signal is applied to the base and passes out at the emitter with little loss. Stage properties are high input impedance, a very low output impedance, a unity (slightly less) voltage gain and high current gain. The circuit is also used extensively as a "buffer" converting impedance's or for feeding or driving long cables or low impedance loads.

பொப�துக�லி (Common Emitter)

The common emitter configuration has the emitter terminal common to both the input and output signal. The arrangement is the same for a PNP transistor, except that the power supplies (not shown) will have the opposite polarity. Used in this way the transistor has the advantages of a medium input impedance, medium output impedance, high voltage gain and high current gain.

பொப�துக்க�லிமி�ன்னி�யல்ந�த்டைதி

மூவி�ய�ய�ன்ஆழி�த்பொதி�ழி�ற்ப�டு

LDR கட்டுப்ப�ட்டுஆழி�

ஒளி�மூவி�ய�(Phototransistor)

மூவி�ய�வி�ய்ப்புப் ப�ர்த்தில்..

ப�டைதிபொதி��ரும்இயந்தி�ரம் அடைமித்தில்

அடிப்படை�க் சேக�ட்ப�டு

இருஉணரி�யும் பொ�ள்டை) – யோமிற்ப்பாரிப்பா�ல் இருயோமி�ட்��ரும்

முன்யோன�க்கா� இ�ங்கும்

இ�துஉணரி� காறுப்பு – யோமிற்ப்பாரிப்பா�ல் �லது யோமி�ட்��ர்

மிட்டும் முன்யோன�க்கா� இ�ங்கும்

�லது உணரி� காறுத்த – யோமிற்ப்பாரிப்பா�ல் இ�து யோமி�ட்��ர்

மிட்டும் முன்யோன�க்கா� இ�ங்கும்

முழுச்சுற்றுவிர�ப்ப�ம்

Simple Line Following Robot எ)�� பா�டைதபொத��ரும்

எந்த�ரின்

ஒ)� உணர்தடை�(LDR)

இரு���� (DIODE)

விடிவிடைமிக்கத்சேதிடைவிய�னிடைவி

ஒ)�கா�லும்இரு���� (LED)

மி�றும்தடை� (VARIABLE RESISTOR)

தடை� (RESISTOR)

மூ���� (TRANSISTOR)

மி�ன்னழுத்தபொசம்டைமிப்பாடுத்த� (VOLTAGE REGULATOR)

யோமி�ட்��ர் (MOTOR)

உலர் காலம் (BATTERY)

பொசப்புத்தகாடு (COPPER BOARD)

பொசப்புக்காம்பா� (COPPER WIRE)

ஈ�ம் (LEAD)

பயன்படுத்தும்உபகரணங்கள்

சுற்றுவிடைரப�ம்

ப�கம் 1

ப�கம் 1 இன்பொதி�ழி�ற்ப�டு

ப�கம் 2

ப�கம் 2 இன்பொதி�ழி�ற்ப�டு

சுற்றுவிடைரப�ம்விடிவிடைமிppu