automatic speed controller for fans and coolers
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Active In SP

Posts: 1
Joined: Mar 2010
26-03-2010, 05:31 PM

please upload full report regarding this topic.
Active In SP

Posts: 549
Joined: Mar 2010
30-03-2010, 05:36 PM

visit this thread for more details on this topic:
Use Search at wisely To Get Information About Project Topic and Seminar ideas with report/source code along pdf and ppt presenaion
nanda ganesh kumar
Active In SP

Posts: 1
Joined: Sep 2011
29-09-2011, 01:44 PM

hi friend i need ppt and documentation for this project and implimentation plz answer to my request as soon as possible
seminar addict
Super Moderator

Posts: 6,592
Joined: Jul 2011
30-09-2011, 09:52 AM

to get information about the topic " automatic speed controller for fans and coolers" please link bellow
Thinking To Register

07-03-2012, 10:30 AM

i wanna circuit diagram of automatic speed controllers for fans and coolers
seminar flower
Super Moderator

Posts: 10,120
Joined: Apr 2012
16-10-2012, 10:57 AM


.pdf   AUTOMATIC SPEED CONTROLLER.pdf (Size: 142.32 KB / Downloads: 17)

During summer nights, the temperature is initially quite high. As time passes, the
temperature starts dropping. Also, after a person falls asleep, the metabolic rate of one’s
body decreases. Thus, initially the fan/cooler needs to be run at full speed. As time
passes, one has to get up again and again to adjust the speed of the fan or the cooler.
The device presented here makes the fan run at full speed for a predetermined time. The
speed is decreased to medium after some time, and to slow later on. After a period of
about eight hours, the fan/cooler is switched off.
Fig. 1 shows the circuit diagram of the system. IC1 (555) is used as an astable
multivibrator to generate clock pulses. The pulses are fed to decade dividers/counters
formed by IC2 and IC3. These ICs act as divide- by-10 and divide-by-9 counters,
respectively. The values of capacitor C1 and resistors R1 and R2 are so adjusted that the
final output of IC3 goes high after about eight hours.
The first two outputs of IC3 (Q0 and Q1) are connected (ORed) via diodes D1 and D2 to
the base of transistor T1. Initially output Q0 is high and therefore relay RL1 is energised.
It remains energised when Q1 becomes high. The method of connecting the gadget to
the fan/cooler is given in Figs 3 and 4.
It can be seen that initially the fan shall get AC supply directly, and so it shall run at top
speed. When output Q2 becomes high and Q1 becomes low, relay RL1 is turned ‘off’ and
relay RL2 is switched ‘on’. The fan gets AC through a resistance and its speed drops to
medium value. This continues until output Q4 is high. When Q4 goes low and Q5 goes
high, relay RL2 is switched ‘off’ and relay RL3 is activated. The fan now runs at low

Important Note..!

If you are not satisfied with above reply ,..Please


So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page
Tagged Pages: controller for coolers, automatic speed control for fan and coolers, automatic speed controller for fans and coolers projects, automated speed control for fans and cooler documentation, automatic speed controller for fans and cooller, pcb layout of automatic speed controllers for fans coolers, seminar on automatic speed controller for fans and coolers,
Popular Searches: seminar on thermoelectric coolers, temperature fans domestic use, automatic speed controller for fans and coolers ppt, automatic speed controller for fans and coolers mini project abstract, temperature dependent speedregulator for fans, automatic speed controller for fans and coolers full report, 510 workshop meerut apprentice iti,

Quick Reply
Type your reply to this message here.

Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  4 fabrication of automatic handbrake release pdf Guest 2 163 25-10-2016, 10:36 AM
Last Post: jaseela123
  automatic tilting car full seminar ppt Guest 1 66 12-10-2016, 09:06 AM
Last Post: amrutha735
  sim card based vehicle speed control ppt Guest 1 40 11-10-2016, 03:48 PM
Last Post: amrutha735
  future scope of gsm based dc motor speed control Guest 1 33 11-10-2016, 10:39 AM
Last Post: amrutha735
  water level controller using verilog Guest 1 50 11-10-2016, 09:29 AM
Last Post: amrutha735
  fabrication of automatic handbrake release pdf file Guest 1 95 08-10-2016, 04:34 PM
Last Post: Dhanabhagya
  automatic headlight dim bright controller using ldr sensor Guest 1 56 08-10-2016, 04:27 PM
Last Post: Dhanabhagya
  automatic handbrake release system project pdf Guest 1 55 08-10-2016, 04:13 PM
Last Post: amrutha735
  speed control of dc motor using triac seminar pdf report Guest 1 60 08-10-2016, 02:58 PM
Last Post: Dhanabhagya
  journal on automatic side stand for two wheelers Guest 1 49 08-10-2016, 02:53 PM
Last Post: Dhanabhagya