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???
02/18/07 02:21
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#133204 - Yes, I decreased the intensity,
Responding to: ???'s previous message


as a test I build a fixture, feeding the segments thru a DIP switch to ensure no electrical leakage. Varing the power applied I could vary the intensity. I can decrease the apparent crosstalk with reduced intensity but it has to be VERY low. So low as to be unusable.

The biggest issue is the variability in the units. Some are excellent, some are trash. I have been buying old-stock QT units to get by since the product line was sold by Fairchild. They never admitted to a problem..... but it is blatant.

Perhaps I need to look into Agilent/HP units. They might be better.....

Bob

List of 13 messages in thread
TopicAuthorDate
7 segment LED question, "light crosstalk"            01/01/70 00:00      
   Filters?            01/01/70 00:00      
      I have one            01/01/70 00:00      
         did you try decreasing LEDs intensity?            01/01/70 00:00      
            Yes, I decreased the intensity,            01/01/70 00:00      
   Optical bleed-over? Or...            01/01/70 00:00      
   Custom Display            01/01/70 00:00      
   Display Filters.            01/01/70 00:00      
      Filter            01/01/70 00:00      
         just to make sure            01/01/70 00:00      
            Exactly!            01/01/70 00:00      
            Understood, good point.            01/01/70 00:00      
      Nice, but...            01/01/70 00:00      

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