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???
10/19/09 03:35
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#169858 - Sink or source?
Responding to: ???'s previous message
I don't agree with sourcing.
In days of old, with relays, it was standard practice to sink, because when adjusting or cleaning relay contacts, you don't blow fuses.
Today, that argumant still holds, plus:
8051's boot outputs high, so sinking don't operate things that should not be operated.
Sink is cheaper and simpler with MosFets, no extra supplies needed.
Regards

List of 9 messages in thread
TopicAuthorDate
to sink or to source            01/01/70 00:00      
   More info            01/01/70 00:00      
      More info            01/01/70 00:00      
         That's quite a good reason            01/01/70 00:00      
            Just a practicallity then            01/01/70 00:00      
               RE: You will probably have to live with their requirements            01/01/70 00:00      
                  customers            01/01/70 00:00      
   Limits under fault conditions?            01/01/70 00:00      
      Sink or source?            01/01/70 00:00      

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