The book contains projects with comprehensive functional description, construction details such as PCB and component layouts and parts list.Enjoy!!! Description: This book, a collection of hardware-based projects which appeared in Electronics For You from year 1979 to 2004, is brought out for the benefit of our new readers. It is a compilation of 60 construction projects tested at EFY Lab. Some projects also cover testing steps, equivalent part names of some hard to find components and lead/pin identification details of semiconductor devices and integrated circuits (ICs). TABLE OF CONTENTS ALARM CIRCUITS Electronic Bell System All In One Alarm Multichannel Fire Alarm System Fire Sensing System 12 Tune Musical Door Bell Burglar Alarm to Protect Your Home Auto Shut Off Door Lock Alarm CONTROLLER AND INDICATOR CIRCUITS Digital Water Level Indicator Cum Pump Controller Ultrasonic Lamp Brightness Controller Sound Operated On Off Switch Remote Controlled Sophisticated Electronic Code Lock DTMF 8 Channel Switching Via Powerline DTMF Remote Control System Automatic Room Light Controller A Unique Liquid Level Indicator Intelligent Water Level Controller Automatic Submersible Pump Controller Tripping Sequence Recorder Cum Indicator Electrolysis Proof Complete Water Level Solution Long Range Remote Control Remote Controlled Switch Board Multiple Control Remote Switch Infrared Remote Control Auto Changing In out Indicator with Door Bell Safety Indicators and AIDS Watchdog For Your Mains Auto Protection For Refrigerator Clap Operated Remote Control For Fans Refrigerator Temperature Controller A Volunteer in the Kitchen A Day Indicator With Alphabetical Display DISPLAY AND LIGHTING CIRCUITS Economical UPS For Cordless Phones Multi Feature Emergency Light Novel Mains Running Lights Spectacular Spectra Dynamic Psychedelic Lights Multilingual Numerical Display Electronic Advertisement Display Make Yourself This Beeper Cum Flasher TIMER AND CLOCK CIRCUITS Digital Clock Using Discrete ICs Digital Clock With Seconds And Alarm Time Display Simple Digital Clock With Hourly Music Digital Dial Clock Programmable Digital Timer Cum Clock Revolving Seconds Display Kettle Timer Melodious Digital Timepiece Improve Your Digital Clock Add Hourly Chime To Your Digital Clock LED Analogue Clock Make Yourself This Crystal-Controlled Electronic Digital Clock GAME BASED PROJECTS MGMA A Mighty Gadget With Multiple Applications Digital Number Shooting Game Party Game How Old Are You? Electronics Housie Player Digital Scoreboard Yoka Fun Box Video Car-Racing Game Make Yourself The Mind Reader - An Interesting Game Make Yourself This Digital Birth Date Teller As a Party Game
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