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Sonsivri > Electronics > General Electronics (Moderators: o2, pickit2) > Help drive the LED with PIC16F887 ?
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smainj
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« on: April 14, 2010, 11:13:11 23:13 »
Hi for all
so i'm start to make electronic animator for LED sign you can programme the sequence with software and send it to PIC with rs-232
the digital side is ok but for power side i don't know how i drive the LED with MOSFET  or bipolaire transistor what is the best solution
i see on this project used STP36NF06
http://picprojects.org.uk/projects/bigmosfetrgb/index.htm
that is ok for my application
thanks for your reading this topic
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Ichan
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« Reply #1 on: April 15, 2010, 08:12:16 08:12 »
Mosfet with low RdsOn is the best, logic level mosfet is needed for driving directly by uC.

I use IRLI3705 (55V 52A logic level) bought from Digikey for similar application, no heatsink required on driving 24V 8A led array.

-ichan
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kalpakchiev
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« Reply #2 on: April 16, 2010, 08:00:56 08:00 »
Or you can also take a logic level FET from almost any old PC motherboard
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smainj
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« Reply #3 on: April 16, 2010, 10:04:56 10:04 »
Quote from: kalpakchiev on April 16, 2010, 08:00:56 08:00
Or you can also take a logic level FET from almost any old PC motherboard

Hi
so this project for Commercial use
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kalpakchiev
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« Reply #4 on: April 16, 2010, 11:22:13 11:22 »
 I this case better follow Ichan's advice. Best regards
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