Pulse Width Modulation (PWM) tutorial
Posted: Mon Nov 17, 2008 4:28 am
I found this on the hackaday main page. I think its a concise and clear explaination of PWM.
http://www.afrotechmods.com/groovy/PWM_tutorial/PWM_tutorial.htm
http://www.afrotechmods.com/groovy/PWM_tutorial/PWM_tutorial.htm