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[DPRG] Question about "A Simple PWM Circuit Based on the 555 Timer"
Subject: [DPRG] Question about "A Simple PWM Circuit Based on the 555 Timer"
From: Mario Marín Richmond
mmarinr at gmail.com
Date: Mon Jan 28 09:51:45 CST 2008
Hi, my name is Mario and I'm a Power Systems Engineering Student from Costa
Rica University. I was searching in the web for any simple project to
execute for an electronics course and I found your article on the PWM for DC
motors. I would like to know a couple of details about it, such as the
values of the external components and some theorical doubts. Specifically, I
would like to know why the circuit uses the 10K resistance and the IRFZ46N??
I understand that it must be a N-channel MOSFET, but I must justify why I
(in this case you) picked this component, and if there is any other suitable
element that can be used instead of it. About the resistance, which is its
function on the PWModulator. I would also like to know if there is any
bibliographical resource that may help me create a Theorical and Conceptual
Base, explaining the main concepts involved in PWM. Thanks for publishing
the project and thanks in advance for any help given.
PD: sorry if my english wasn't very well.
Mario Marin Richmond
Universidad de Costa Rica.
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