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???
07/31/08 20:54
Modified:
  07/31/08 20:55

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Msg Score: +1
 +1 Good Answer/Helpful
#157202 - the problem with the 16 bitters
Responding to: ???'s previous message
I noticed my LED driver ICs DM134B get hot during operation the problem with the 16 bitters is that they have to dissdapate twice as much power as the 8 bitters. For that reason we use only 8 bitters.
Make sure your Vled is the bare minimum ~3V for amber, the driver must dissipate the diferencce between Vf and Vled.

did it again
Vf the forward drop of the LED
Vled, the voltage applied to the LED anodes.

Erik

List of 13 messages in thread
TopicAuthorDate
Outdoor Display 2            01/01/70 00:00      
   you can't            01/01/70 00:00      
      seconded            01/01/70 00:00      
         Have seen parallel-connected LEDs            01/01/70 00:00      
            Who broke the breaks?            01/01/70 00:00      
               Lousy, cross-wired fingers            01/01/70 00:00      
      in series!!            01/01/70 00:00      
         Uneven load            01/01/70 00:00      
         most often for pure mechanical reasons            01/01/70 00:00      
   Temperature Problems            01/01/70 00:00      
      Don't connect            01/01/70 00:00      
         Serial connection it is            01/01/70 00:00      
      the problem with the 16 bitters            01/01/70 00:00      

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