![]() |
AUTOMATIC SPEED CONTROLLER FOR FANS AND COOLERS full report - Printable Version +- Free Academic Seminars And Projects Reports (https://easyreport.in) +-- Forum: Seminars Topics And Discussions (https://easyreport.in/forumdisplay.php?fid=30) +--- Forum: Miscellaneous Seminars Topics (https://easyreport.in/forumdisplay.php?fid=21) +---- Forum: General Seminar Topics (https://easyreport.in/forumdisplay.php?fid=58) +---- Thread: AUTOMATIC SPEED CONTROLLER FOR FANS AND COOLERS full report (/showthread.php?tid=49240) |
AUTOMATIC SPEED CONTROLLER FOR FANS AND COOLERS full report - sreedominates - 10-04-2017 AUTOMATIC SPEED CONTROLLER FOR FANS AND COOLERS [attachment=17411] INTRODUCTION This is a device to control the speed of fan and coolers automatically. The device presented here makes the fan run at a full speed for pre determined time. This speed is decreased to medium after some time and to slow then onwards after a period of 8 hours, the fan or cooler is switched off. The circuit consist of IC1 (555 Timer IC) which is used as an astable multi vibrator used to generate clock pulses. These are fed to decade dividers or counters formed by IC2 and IC3 (IC CD4017B). These ICs act as divide by 10 and divide by 9 counters respectively. The values of capacitor C1 and resister R1 and R2 are adjusted so that the final output of IC3 goes high after 8 Hours. So during summer nights the temperature is quality high but as time passes temperature starts dropping. So it is required to reduce the speed of a fan or cooler after particular periods. By using this device these reducing can be done automatically. This also makes the reduced conception of power. BLOCK DIAGRAM DISCRIPTION The block diagram is shown above the important parts consist of a 555 Timer IC and 1 divide by 9 and divide by 10 counter and relays. Each block in the block diagram is explained in detail in below. Astable Multivibrator In this block diagram Astable multivibrator which is used as a pulse generator circuit it s high and low state are both unstable. It provides clock pulses for the working of the decade counter1. The output of the multivibrator toggles with the low and high continuously, infect generating a train of pulses. Decade counter1 It accepts the output from the astable multivibrator as clock pulse. And the counter starts counting when there is a output at the astable output. Decade Counter2 It accept the output from the decade counter1 and counter start counting till there is an output from the decade counter1 and it act as a divide by 9 counter. Relay This device simply acts as an electronic switch. When the output from the decade counter 2 reaches the relay terminal it will control the speed of the fan or cooler by switching of relays. AUTOMATIC SPEED CONTROLLER FOR FANS AND COOLERS full report - alisha - 10-04-2017 to get information about the topic automatic speed control for fans and coolers full report ppt and related topic refer the page link bellow http://seminarsprojects.net/Thread-automatic-speed-controller-for-fans-and-coolers-full-report http://seminarsprojects.net/Thread-automatic-speed-controller-for-fans-with-on-off-control-by-light http://seminarsprojects.net/Thread-automatic-speed-controller-for-fans-coolers http://seminarsprojects.net/Thread-automatic-speed-controller-for-fans-with-on-off-control-by-light |