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???
02/25/03 21:45
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 		 #40086 - RE: Connecting an LED to an 8052
Responding to: ???'s previous message
Rob Klein wrote:
-------------------------------
Charles,



Your point on not using a regulated supply to feed LEDs is well taken. However, using an unregulated supply also means that the current through the LED -and thus its brightness-

By rearranging the circuit I proposed slightly,(A resistor in the emitter lead of the second transistor) it becomes a constant current drive for the LED !

Next objection, please.

Steve

List of 40 messages in thread
TopicAuthorDate
Connecting an LED to an 8052            01/01/70 00:00      
   RE: Connecting an LED to an 8052            01/01/70 00:00      
      RE: Connecting an LED to an 8052            01/01/70 00:00      
      Figure #2 like this?            01/01/70 00:00      
         RE: Figure #2 like this?            01/01/70 00:00      
            RE: Figure #2 like this?            01/01/70 00:00      
               RE: Figure #2 like this?            01/01/70 00:00      
                  RE: Figure #2 like this?            01/01/70 00:00      
                     RE: Figure #2 like this? Rob            01/01/70 00:00      
                        RE: Figure #2 like this? Rob            01/01/70 00:00      
                  RE: Figure #2 like this?            01/01/70 00:00      
                     RE: drawing            01/01/70 00:00      
                        RE: drawing            01/01/70 00:00      
                           RE: drawing            01/01/70 00:00      
                              RE: drawing            01/01/70 00:00      
               Jackson Pollock?            01/01/70 00:00      
                  RE: Jackson Pollock?            01/01/70 00:00      
                     RE: Perpetual Energy / Chris            01/01/70 00:00      
                        RE: Perpetual Energy / Chris            01/01/70 00:00      
            RE: Figure #2 like this? Steve            01/01/70 00:00      
   RE: Connecting an LED to an 8052            01/01/70 00:00      
      RE: Connecting an LED to an 8052            01/01/70 00:00      
         RE: Connecting an LED to an 8052            01/01/70 00:00      
   RE: Connecting an LED to an 8052            01/01/70 00:00      
      RE: Connecting an LED to an 8052            01/01/70 00:00      
   RE: Connecting an LED to an 8052            01/01/70 00:00      
      RE: Connecting an LED to an 8052            01/01/70 00:00      
         RE: Connecting an LED to an 8052            01/01/70 00:00      
            RE: Connecting an LED to an 8052            01/01/70 00:00      
               RE: Connecting an LED to an 8052            01/01/70 00:00      
               RE: Connecting an LED to an 8052            01/01/70 00:00      
                  RE: Connecting an LED to an 8052            01/01/70 00:00      
   RE: Connecting an LED to an 8052            01/01/70 00:00      
   *** LED Page updated ***            01/01/70 00:00      
      RE: *** LED Page updated ***            01/01/70 00:00      
   RE: Connecting an LED to an 8052            01/01/70 00:00      
   RE: Connecting an LED to an 8052            01/01/70 00:00      
      RE: Connecting an LED to an 8052            01/01/70 00:00      
         RE: Connecting an LED to an 8052            01/01/70 00:00      
   RE: Connecting an LED to an 8052            01/01/70 00:00      

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