I am trying to drive a RGB-ledstrip using the following circuit: http://learn.adafruit.com/rgb-led-strips/usage
As I am using a Common Cathode led-strip instead of a Common Anode one as used in the above link thus I came up with this 'modified circuit'. Because my experience with FETs was nihil this didn't actually work as I would need at least a voltage => Vcc to saturate the MOSFET.
VCC + STP50N06FI | N-MOSFET | ||-+ ___ ||<- | \_----------||-+ |___/ | Logic 5V (PWM) | Ledstrip V -> (Common - Cathode) | | === GND (created by AACircuit v1.28.6 beta 04/19/05 www.tech-chat.de)
Is it possible to use a N-channel MOSFET at all for this application? and if so, what do I need to do to make this work (Control the LED-strip brightness with a PWM signal, logic 5v).