DPRG mailing list archives: [DPRG] 555 PWM resistor capacitor calculation

Fri Feb 22 12:18:35 CST 2008

Mike,

            You can use just about any transistor you want here. The
current of a single LED will be much less than a motor, so you could use
a smaller MOSFET, or just a BJT like a 2n2222 or something.

Good Luck,

Rick

-----Original Message-----
From: dprglist-bounces at dprg.org [mailto:dprglist-bounces at dprg.org] On
Behalf Of Michael Nuzzi
Sent: Thursday, February 21, 2008 4:27 PM
To: dprglist at dprg.org
Subject: [DPRG] 555 PWM resistor capacitor calculation

Hi

I came across the article on using a 555 to make a PWM circuit.

http://www.dprg.org/tutorials/2005-11a/index.html

I would like to use this to drive LEDs instead of a motor. Is there a
different transistor I should use instead of the IRFZ46N?

thanks

Mike

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