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Thread Closed: Issue successfully resolved

???
04/06/04 19:32
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 		 #68034 - RE: ULN2803 Output droping at 3KHz.
Responding to: ???'s previous message
accepts 3 TTL signals viz. CLOCK, DIRECTION, START

8051--->Optocouplers--->ULN2803--->motor drive

What is the purpose of ULN2803? Is not optocoupler o/p enough to drive the TTL level inputs of your motor?




List of 47 messages in thread
TopicAuthorDate
ULN2803 Output droping at 3KHz.            01/01/70 00:00      
   RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
      RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
         RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
            RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
         RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
            RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
               RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
            RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
               RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
                  RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
   RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
      RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
         RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
            RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
   RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
      RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
         RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
   RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
      RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
         RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
            RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
               RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
   RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
   RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
      RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
   RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
      RE: Schematic would help us            01/01/70 00:00      
   CNY17-3 is the culprit!            01/01/70 00:00      
      RE: CNY17-3 is the culprit!            01/01/70 00:00      
         RE: CNY17-3 is the culprit!            01/01/70 00:00      
            RE: CNY17-3 is the culprit!            01/01/70 00:00      
   RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
      May be Prahlad will inform us now?            01/01/70 00:00      
      RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
         RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
         RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
   RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      
      We are still waiting for more details            01/01/70 00:00      
         3 kHz ? Stepper motor ?            01/01/70 00:00      
      RE: ULN2803.            01/01/70 00:00      
         RE: ULN2803.            01/01/70 00:00      
         RE: ULN2803.            01/01/70 00:00      
            RE: ULN2803.            01/01/70 00:00      
         RE: ULN2803.            01/01/70 00:00      
            RE: ULN2803.            01/01/70 00:00      
   RE: ULN2803 Output droping at 3KHz.            01/01/70 00:00      

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