Lab Projects

EL 209 ELECTRONIC DEVICES AND CIRCUITS LAB

 1.

Light sensor using photodiode

 Op-Amp, Photodiode, LED

http://www.engineersgarage.com/electronic-circuits/light-sensor-photodiode

 2.

 Audio Amplifier

 BJT, Signal Amplification

 http://www.engineersgarage.com/electronic-circuits/audio-amplifier

 3.

Variable Power Supply

Rectifier, Voltage Regulation, Diode

http://www.engineersgarage.com/electronic-circuits/variable-power-supply

 4.

Security Alarm for Doors, Almirah, cupboards using Op Amp

 Op-Amp, LED

http://www.engineersgarage.com/electronic-circuits/security-guard-circuit

 5.

Sinewave Generator

 BJT, Battery

http://www.redcircuits.com//Page13.htm

 6.

Light/Dark Sensor

 BJT, Op-Amp, LDR

http://www.sentex.ca/~mec1995/circ/sensor2.htm

 7.

DC to DC voltage   converter

 BJT,Zener diode

 http://www.sentex.ca/~mec1995/circ/car912.htm

 8.

Low cast Pilot lamp

 Diode,LED

 http://electroskan.wordpress.com/2010/06/02/low-cost-pilot-lamp/

 9.

Low battery indicator circuit

 Zener diode, Op-Amps,LED

 http://electroskan.wordpress.com/2010/05/10/low-battery-indicator/

 10.

Automatic  light/dark indicator

 Op-Amps, LDR

 http://www.engineersgarage.com/electronic-circuits/automatic-light-dark-indicator

11.

Dancing LED

 BJT, LED

 http://electroskan.wordpress.com/2010/05/03/401/

 12.

 Interruption Alarm

 Op-Amps, LDR,LED

 http://electroskan.wordpress.com/2010/04/24/interruption-alarm/

 13.

 Telephone status 

 indicator

 LED, switch

 http://electroskan.wordpress.com/2010/05/30/telephone-status-indicator/

14.

Adjustable Trip   point relay driver

 Op-Amps, BJT

 http://books.google.com.pk/books?id=K5tEAVCewYcC&pg=PA317&source=gbs_toc_r&cad=4#v=onepage&q&f=false

 15.

Voltage Tripler and  Quadruplar (TWO STUDENTS ONLY)

 Transformer, Diode, Zener diode.

 http://www.circuitstoday.com/voltage-multipliers

 16.

 Shadow Alarm

 Op-Amps, BJT

 http://electroskan.wordpress.com/2010/04/29/shadow-alarm-2/

 17.

 FM Transmitter

 BJT, Variable capacitor

 http://www.buildcircuit.com/simple-steps-for-making-fm-transmitter/

 18.

Transistor Based Secret Bell

 BJT, Switch, Buzzer

 http://www.engineersgarage.com/electronic-circuits/secret-bell

 19.

High bright LED Emergency Light

Transformer, Diodes,BJT,LED

 http://talkingelectronics.com/projects/200TrCcts/101-200TrCcts.html#69

 20.

 Relay off Delay

 BJT, Relay

 http://talkingelectronics.com/projects/200TrCcts/101-200TrCcts.html#69

 21.

 10 SECOND DELAY

 BJT, LED

 http://talkingelectronics.com/projects/200TrCcts/101-200TrCcts.html#69

22.

Flashing lights for model railway crossing

 BJT, LED

 http://talkingelectronics.com/projects/200TrCcts/101-200TrCcts.html#69

 23.

 Capacitor tester

 BJT

 http://talkingelectronics.com/projects/200TrCcts/101-200TrCcts.html#96

 24.

Electronic Gate  keeper

 BJT, Op-Amps, LED

http://www.extremecircuits.net/2013/02/electronic-gate-keeper.html

 25.

Simple function generator

 OP-Amps, Dual OP-Amps

http://www.eleccircuit.com/function-generator-by-ic-1458/

 26.

Increase output current circuit using Amplifier.

 Dual OP-Amps, OP-Amp

http://www.eleccircuit.com/increase-output-current-of-the-op-amp-ic-lm324-in-85ma-size/

 27.

Full Wave rectifier using OP-Amp

 OP-Amp, Diode

http://www.eleccircuit.com/full-wave-rectifier-with-an-op-amp-ic/

28.

Rectification by Zener diode

Zener diode, Diode.

http://www.eleccircuit.com/full-wave-rectifier-with-an-op-amp-ic/

 29.

 Sine wave oscillator         

 BJT, Zener diode

 http://www.eleccircuit.com/sine-wave-oscillator-low-frequency-constant-amplitude/

 30.

Push Bike Light

BJT, Photoresistor, Filament lamp/LED.

http://www.extremecircuits.net/2010/06/push-bike-light.html

 31.

Small surge protector

 BJT, Relays, Diode

http://www.eleccircuit.com/small-surge-protector-using-delay-system-by-c1815/

32.

White LED Light Probe for Inspection

 BJT, LED, Battery

 http://electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=66&article_type=1&id=773&tt=unhot&b_type=new

33.

Twi-light using white LEDs

 BJT, LDR, LED

 http://electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=76&article_type=1&id=769&tt=unhot&b_type=new

 34.

 Simple Video Amplifier

 BJT, Diode

http://electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=75&article_type=1&id=768&tt=unhot&b_type=new

 35.

Automatic Bathroom Lamp

 LDR, Relay, BJT, Transformer

 http://electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=803&article_type=1&id=699&tt=unhot&b_type=new

 36.

Infrared Illuminator

 BJT, LED

 http://www.electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=96&article_type=1&id=600&tt=unhot&b_type=new

 37.

Telephone Line In-use Indicator

 BJT, Zener Diode, LED

  www.electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=37&article_type=1&id=611&tt=unhot&b_type=new

 38.

Low Current, High Voltage Power Supply

 BJT, Zener, Transformer

www.electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=380&article_type=1&id=574&tt=unhot&b_type=new

 39.

Intelligent Switch (FOUR STUDENTS ONLY)

 BJT, LED, Transformer, Relays

www.electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=378&article_type=1&id=575&tt=unhot&b_type=new

 40.

 HANDY Zener Diode Tester

 BJT, Transformer

www.electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=375&article_type=1&id=569&tt=unhot&b_type=new

 41.

Telecom Headset

 (FOUR STUDENTS)

 BJT, Zener, LED

www.electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=340&article_type=1&id=567&tt=unhot&b_type=new

 42.

Low-Cost Transistorized Intercom

(FOUR STUDENTS)

 BJT,  Speaker

www.electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=409&article_type=1&id=549&tt=unhot&b_type=new

 43.

Protection for Electrical Appliances

 Diode, Transformer

www.electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=433&article_type=1&id=541&tt=unhot&b_type=new

 44.

 Low cost fire alarm circuit.

 BJT

 www.circuitstoday.com/low-cost-fire-alarm-circuit

 45.

2 km FM Transmitter

 BJT, V

 http://www.circuitstoday.com/2-km-fm-transmitter

 46.

 Water Level Indicator

 BJT, LED

www.circuitstoday.com/simple-water-level-idicator

47.

EXIT sign using LEDs (ONE STUDENT ONLY)

LED

 p 110 (Boylestad Ninth Edition)

 48.

 Smart Bicycle Light

BJT, Zener, LED

http://www.electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=709&article_type=1&id=644&tt=unhot&b_type=new

 49.

Miniature Stobe Light

 BJT, Transformer

www.electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=417&article_type=1&id=562&tt=unhot&b_type=new

 50.

Power-supply Failure Alarm

 BJT, Zener Diode, Alarm

www.electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=437&article_type=1&id=536&tt=unhot&b_type=new

 51.

Automatic Emergency Torch

 BJT, LED, Transformer

www.electronicsforu.com/newelectronics/lab/ad.asp?url=//EFYLinux/circuit/January2010/Automatic%20emergency%20tourch.pdf&article_type=1&id=510&tt=unhot&b_type=new

 52.

Blown Fuse Indicator with Alarm

 BJT, LED

www.electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=352&article_type=1&id=479&tt=unhot&b_type=new

 53.

LED Lighting For Christmas

 BJT, LED

www.electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=169&article_type=1&id=409&tt=unhot&b_type=new

 54.

Parrot-Sounding AC Door Bell

 BJT, Transformer

 www.electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=210&article_type=1&id=377&tt=unhot&b_type=new

 55.

Visual AC Mains Voltage Indicator (FIVE STUDENTS ONLY)

  

www.electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=213&article_type=1&id=376&tt=unhot&b_type=new

 56.

Versatile Power Supply

 BJT, Transformer

www.electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=218&article_type=1&id=369&tt=unhot&b_type=new

 57.

Tele Conferencing System

 BJT, Transformer, LED

www.electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=229&article_type=1&id=358&tt=unhot&b_type=new

 58.

Ultra-Bright LED Lamp

 (ONE STUDENT)

 Zener Diode

 www.electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=283&article_type=1&id=289&tt=unhot&b_type=new

 59.

Leakage and Continuity Tester

 BJT, LED

http://electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=916&article_type=1&id=759&tt=unhot&b_type=new

 60.

Universal High-Resistance Voltmeter

 Op-Amp, Diode

 http://electronicsforu.com/newelectronics/lab/ad.asp?url=/efylinux/circuit/feb2003/feb00_universal.pdf&article_type=1&id=11&tt=unhot&b_type=new

 61.

Emergency Photo Lamp

Photo-transistor, BJT, LED, Gates

electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=919&article_type=1&id=763&tt=unhot&b_type=new

62.

Power Resumption Alarm and Low-Voltage Protector

 

Transformer, LED

http://electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=60&article_type=1&id=775&tt=unhot&b_type=new

63.

Power supply with battery backup

 

Transformer, BJT, LED

http://www.electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=112&article_type=1&id=457&tt=unhot&b_type=new

64.

Battery Deep Discharge Saver

 

Transformer, Zener

http://electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=807&article_type=1&id=696&tt=unhot&b_type=new

65.

Friendly Charger for Mobile Phones

 

BJT,ZENER

http://www.electronicsforu.com/electronicsforu/circuitarchives/view_article.asp?sno=468&article_type=1&id=384&tt=unhot&b_type=new