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Thread Closed: Issue successfully resolved

Prahlad J. Purohit
04/09/04 03:13
Read: 427 times
Mumbai
India


 		 #68239 - RE: ULN2803 Output droping at 3KHz.
Responding to: Michael Karas's previous message
Michael the schematic which you have posted is perfectly describing my connections. The only thing is the ULN2803 is connected to optocouplers and which in turn are connected to uC port pins.

I don't have pull ups across ULN2803 outputs at present. Whats value pull up resistors should I use.
Thanks in advance.

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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