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07/24/05 08:28
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#97891 - Driving LED
Hi, in reading previous posts for driving LEDs with an 8051 I noticed it is suggested to use a transistor to drive the LED, preferably a PNP type. If the port pin can sink 20 ma then why bother with the PNP?

Regards

James Krushlucki

List of 10 messages in thread
TopicAuthorDate
Driving LED            01/01/70 00:00      
   Re: Led Driving            01/01/70 00:00      
      Another aspect            01/01/70 00:00      
   Sawing with a file..            01/01/70 00:00      
   How many LEDS            01/01/70 00:00      
      Driving LEDs            01/01/70 00:00      
         PNP            01/01/70 00:00      
            Good design practice            01/01/70 00:00      
               generalizations            01/01/70 00:00      
   Ground bounce is an issue            01/01/70 00:00      

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