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???
11/26/10 09:17
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#179646 - Who is the designer ?? Stand up....
Responding to: ???'s previous message
Stefan Kanev said:
Hi,
....In my opinion - your Darlington driver is not configured properly - at least base-emitter resistors are missing.
Rethink things!
regards

Hey you guys at National Instruments! are you listening ??

Raghu

PS : What was attached is a block schematic in the user manual of the PCI card. It does not purport to be a full circuit diagram with parts list.



List of 19 messages in thread
TopicAuthorDate
Switch off a LED array            01/01/70 00:00      
   What are the switches?            01/01/70 00:00      
   Virtual ground at 3.3V            01/01/70 00:00      
      3.3V Regulator Idea            01/01/70 00:00      
         The 3.3V regulator idea might not work!            01/01/70 00:00      
   It is a SOURCE board ...            01/01/70 00:00      
   Hhm, leakage currents?            01/01/70 00:00      
      Solution in sight            01/01/70 00:00      
         LED tester shows bad design/bad parts            01/01/70 00:00      
            Who is the designer ?? Stand up....            01/01/70 00:00      
               LED tester shows bad design/bad parts            01/01/70 00:00      
               I wouldn't rely on anything published by NI            01/01/70 00:00      
                  crying wolf again??            01/01/70 00:00      
                     NI is not a fly-by-night-operator            01/01/70 00:00      
                        No question about that            01/01/70 00:00      
                           The "crying wolf" is right here...            01/01/70 00:00      
                              I also say it...            01/01/70 00:00      
                                 Leakage current analysis            01/01/70 00:00      
            Also, the voltage across the load....            01/01/70 00:00      

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