free 8051 Microcontroller Projects AVR PIC Microcontroller Projects Tutorials Ebooks Libraries, interfacing tutorials, lcd tutorial, stepper motor, dc motor 8051 assembly language programming electronics and communication ECE CSE pdf ebooks library BE final year project ideas Embedded systems

 
8051 microcontroller 8051 microcontroller
8051 PWM code

Pulse Width Modulation Tutorial
Pulse Width Modulation tutorial



Introduction to PWM
The theory behind pulse width modulation
and its working.


8051 PWM Example
Implementation of PWM on normal 8051
using timers, along with sample code.


AVR PWM Example
Using timers of AT90S8515 in 8-bit PWM
mode with non-inverting o/p, with sample code.

...[more]
pulse width modulation   8051 pwm code   avr pwm example code   implement pwm 8051   pulse width modulation 8051   
Posted on Monday 18 February 2008 - 12:55:43

An 8051 Based Temperature Controlled Fan project
PWM is Pulse width modulation.. it helps you to control the output voltage by varying the width of a square wave pulse..

A Brief Description:
CODE:
|¯¯|__|¯¯|__|¯¯|__ ---> A square wave

|¯¯¯¯¯¯|______
<-Ton-><-Tof->.
<---Ttotal--->


Ttotal = ton+toff

Duty cycle d = Ton/Ttotal

if Vin is the input voltage and Vo is the o/p voltage.. then

Vo = d x Vin
where d is the duty cycl...[more]
pulse width modulation   PWM   8051 PWM code   
Posted by Ajay Bhargav on Monday 20 August 2007 - 05:45:25

An 8051 Based Temperature Controlled Fan project
I think there is some problem with the attachment of file.. i need to check that..
By the time.. please try to paste the code..

here is a sample PWM code.. check it..
CODE:
org 0H
sjmp start
org 0BH
TIMER_0_INTERRUPT:
   JB F0, HIGH_DONE    ; If F0 is set then we just finished the high section of the
LOW_DONE:              ...[more]
PWM   pulse width modulation   8051 PWM code   PWM sample code   
Posted by Ajay Bhargav on Thursday 30 August 2007 - 06:05:26



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