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Thread Closed: Issue successfully resolved

Erik Malund
04/06/04 12:44
Read: 421 times
Mt Airy, Nc
USA


 		 #68028 - RE: ULN2803 Output droping at 3KHz.
Responding to: ???'s previous message
Steve said:
What are you pulling the cable up with ? A 2803 is a sinking driver.

If you have a high resistance pull-up (such as the inputs at the other end) it does not take much cable capacitance to drop the voltage at the receiver.

The easy way to determine if capacitive loading is your problem is with a scope.

Erik

List of 47 messages in thread
TopicAuthorDate
ULN2803 Output droping at 3KHz.      Prahlad J. Purohit      04/06/04 11:08      
   RE: ULN2803 Output droping at 3KHz.      Steve M. Taylor      04/06/04 11:58      
      RE: ULN2803 Output droping at 3KHz.      Prahlad J. Purohit      04/06/04 12:07      
         RE: ULN2803 Output droping at 3KHz.      Erik Malund      04/06/04 12:10      
            RE: ULN2803 Output droping at 3KHz.      Prahlad J. Purohit      04/06/04 12:21      
         RE: ULN2803 Output droping at 3KHz.      Steve M. Taylor      04/06/04 12:30      
            RE: ULN2803 Output droping at 3KHz.      Prahlad J. Purohit      04/06/04 12:40      
               RE: ULN2803 Output droping at 3KHz.      Steve M. Taylor      04/06/04 14:55      
            RE: ULN2803 Output droping at 3KHz.      Erik Malund      04/06/04 12:44      
               RE: ULN2803 Output droping at 3KHz.      Prahlad J. Purohit      04/06/04 12:51      
                  RE: ULN2803 Output droping at 3KHz.      Erik Malund      04/06/04 12:54      
   RE: ULN2803 Output droping at 3KHz.      Charles Bannister      04/06/04 12:20      
      RE: ULN2803 Output droping at 3KHz.      Prahlad J. Purohit      04/06/04 12:36      
         RE: ULN2803 Output droping at 3KHz.      Steve M. Taylor      04/06/04 12:55      
            RE: ULN2803 Output droping at 3KHz.      Erik Malund      04/06/04 13:08      
   RE: ULN2803 Output droping at 3KHz.      IJAZ AHMED      04/06/04 13:32      
      RE: ULN2803 Output droping at 3KHz.      Christian Kleiber      04/06/04 14:05      
         RE: ULN2803 Output droping at 3KHz.      Erik Malund      04/06/04 14:25      
   RE: ULN2803 Output droping at 3KHz.      Jacob Boyce      04/06/04 16:08      
      RE: ULN2803 Output droping at 3KHz.      Erik Malund      04/06/04 16:11      
         RE: ULN2803 Output droping at 3KHz.      Jacob Boyce      04/06/04 16:12      
            RE: ULN2803 Output droping at 3KHz.      Steve M. Taylor      04/06/04 16:53      
               RE: ULN2803 Output droping at 3KHz.      Jacob Boyce      04/07/04 08:03      
   RE: ULN2803 Output droping at 3KHz.      Terry Lingle      04/06/04 19:58      
   RE: ULN2803 Output droping at 3KHz.      Oleg Sergeev      04/07/04 02:10      
      RE: ULN2803 Output droping at 3KHz.      Prahlad J. Purohit      04/07/04 04:43      
   RE: ULN2803 Output droping at 3KHz.      Alexander Riabokris      04/07/04 09:16      
      RE: Schematic would help us      IJAZ AHMED      04/07/04 14:02      
   CNY17-3 is the culprit!      Kai Klaas      04/07/04 18:15      
      RE: CNY17-3 is the culprit!      IJAZ AHMED      04/10/04 14:36      
         RE: CNY17-3 is the culprit!      Kai Klaas      04/10/04 16:09      
            RE: CNY17-3 is the culprit!      Michael Karas      04/10/04 22:04      
   RE: ULN2803 Output droping at 3KHz.      Michael Karas      04/08/04 04:25      
      May be Prahlad will inform us now?      Kai Klaas      04/08/04 06:54      
      RE: ULN2803 Output droping at 3KHz.      Prahlad J. Purohit      04/09/04 03:13      
         RE: ULN2803 Output droping at 3KHz.      Steve M. Taylor      04/09/04 04:14      
         RE: ULN2803 Output droping at 3KHz.      Michael Karas      04/09/04 06:32      
   RE: ULN2803 Output droping at 3KHz.      Jacob Boyce      04/09/04 07:54      
      We are still waiting for more details      Kai Klaas      04/09/04 19:18      
         3 kHz ? Stepper motor ?      Raghunathan R      04/10/04 01:00      
      RE: ULN2803.      Abdul Mujid      04/10/04 22:58      
         RE: ULN2803.      Steve M. Taylor      04/11/04 03:51      
         RE: ULN2803.      Michael Karas      04/11/04 03:58      
            RE: ULN2803.      Steve M. Taylor      04/11/04 04:11      
         RE: ULN2803.      Michael Karas      04/11/04 04:14      
            RE: ULN2803.      Michael Karas      04/11/04 04:24      
   RE: ULN2803 Output droping at 3KHz.      Prahlad Purohit      04/11/04 21:15      

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