Generation of PWM pulses to drive DC motor

[zeshan]

helo i need help regarding generation of PWM pulses to drive the motor....how can i generate PWM pulses...............................?????????? should i use motor driver to drive the motor or to connect the pwm port to Motor driver??????

 

[hameeds01]

do u need a variable Duty cycle or fixed ??
whatz ur motor specification?
do u want to control on the speed??

 

[zeshan]

yes i want a fixed duty cycle........................................i hav 9 V motors.plz if u can help me

 

[nashwan]

hi
in simple way u can use 2*(555) timer first one as stable the output of first one
trigger second 555 connected as monostable and last one drive output stage
with that connection u can adjust period and pulse width for drive signal
https://www.eleinmec.com/article.asp?28