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???
04/13/05 00:42
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#91485 - current?
Responding to: ???'s previous message
Joshua Vavra said:
Can someone elaborate on use of the MAX7219? I printed out the data sheet

You also need to read the data sheet! ;-)

The page on the Maxim site also has a list of Application Notes and other goodies:
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/1339

First, what should I use to drive the additional current needed for my large displays? Would a 2N2222 do the trick?

As Erik has already said, nobody can answer that until you actually say what current this display of yours requires!
And, as Jan said, the Voltage requirement may also be important.

List of 23 messages in thread
TopicAuthorDate
Seven Segment Displays Driven By 8051            01/01/70 00:00      
   Maxim part            01/01/70 00:00      
      Integrated MUX drivers are 5V only            01/01/70 00:00      
   Confused            01/01/70 00:00      
   Multiplexing 7-segment LED displays            01/01/70 00:00      
      rate of multiplex            01/01/70 00:00      
         Yes, of course,            01/01/70 00:00      
   Further Clarification of My Project            01/01/70 00:00      
      nobody can answer that            01/01/70 00:00      
      No 373s!            01/01/70 00:00      
         Ohhh! Pretty NM            01/01/70 00:00      
      OK            01/01/70 00:00      
   MAX7219            01/01/70 00:00      
      Like this            01/01/70 00:00      
      current?            01/01/70 00:00      
         LSD23255-10 Display Specs            01/01/70 00:00      
            data sheet?            01/01/70 00:00      
            GOOGLE!!!            01/01/70 00:00      
      Multiplexing            01/01/70 00:00      
   Drivers            01/01/70 00:00      
      74hc595 alt.            01/01/70 00:00      
         TPIC6C595 by TI?            01/01/70 00:00      
            Thanks.            01/01/70 00:00      

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