i have present you two circuit select best one from it ..

P1__22K Linear Potentiometer (See Notes)

R1__15K @ 20 C n.t.c. Thermistor (See Notes)
R2__100K 1/4W Resistor
R3,R6__10K 1/4W Resistors
R4,R5__22K 1/4W Resistors
R7__100R 1/4W Resistor
R8__470R 1/4W Resistor
R9__33K 4W Resistor

C1__10nF 63V Polyester Capacitor

D1__BZX79C18 18V 500mW Zener Diode
D2__TIC106D 400V 5A SCR
D3-D6__1N4007 1000V 1A Diodes

Q1,Q2__BC327 45V 800mA PNP Transistors
Q3__BC337 45V 800mA NPN Transistor

SK1__Female Mains socket

PL1__Male Mains plug & ....etc

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I need ppt on temperature based ceiling fan speed control system 230v ac motor using microcontroller 8051 to make mini project i also require circuit diagram and assembly language program.
....etc

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To get full information or details of temperature controlled fan using microcontroller please have a look on the pages

http://seminarsprojects.net/Thread-automatic-temperature-controlled-fan-using-microcontroller

http://seminarsprojects.net/Thread-automatic-temperature-control-of-vaccum-brazing-furnace-by-using-plc-full-report

http://seminarsprojects.net/Thread-temperature-controlled-fan-project

if you again feel trouble on temperature controlled fan using microcontroller please reply in that page and ask specific fields in temperature co ....etc

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to get information about the topic temperature controlled fanfull report ppt and related topic refer the page link bellow

http://seminarsprojects.net/Thread-automatic-temperature-controlled-fan

http://seminarsprojects.net/Thread-temperature-controlled-fan-project

http://seminarsprojects.in/attachment.php?aid=15652

http://seminarsprojects.net/Thread-temperature-controlled-fan-for-home-application

http://seminarsprojects.net/Thread-temperature-controlled-dc-fan-using-pic18f452-microcontroller-full-report ....etc

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please send to me a circuit diagram , explanation of that circuit diagarm, installation of that i.e how could we connect that to the fan, how can we tested this before using it in the main circuit of automatic temperature controlled fan .

And
also send to me explation of my attachement.. ....etc

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To get full information or details of embedded c code for temperature controlled fan please have a look on the pages

http://seminarsprojects.net/Thread-embedded-temperature-based-fan-speed-controller-using-at89s52-microcontroller

if you again feel trouble on embedded c code for temperature controlled fan please reply in that page and ask specific fields in embedded c code for temperature controlled fan ....etc

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temperature controlled dc fan using thermistor pdf

Working:

The basic working principle of temperature controlled DC fan is based on the working principle of thermistor. Thermistor is component which changes its resistance as its temperature changes. There are two types of thermistor available which are NTC i.e. negative temperature coefficient and other is PTC which is positive temperature coefficient.

In temperature controlled DC fan we have used a NTC type thermistor. It is called NTC because its resistance increases when its temperature ....etc

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temperature controlled fan speed code

Introduction:
In this project we will be using the concept of firing angle to control fan speed. Basically in this project we will be controlling fan speed with respect to the temperature.
The system will get the temperature from the temperature Sensor via the ADC and it will control the speed according the set poing set by the user. The circuit consists of four switches based keypad, in which two buttons are used to increment and decrement the temperature value and the remaining two buttons are used to ac ....etc

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to get information about the topic PWM based Inverter fed Induction MotorIntroduction to Pulse Width Modulation full report refer the page link bellow
http://seminarsprojects.net/Thread-pwm-based-inverter-fed-induction-motorintroduction-to-pulse-width-modulation-pwm-in ....etc

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i want complet detail about this project because i want to make a mini project in my college based on this. ....etc

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