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???
04/28/05 14:46
Modified:
  04/28/05 14:54

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#92521 - MAX232 is not an isolator
Responding to: ???'s previous message
What do you mean by no isolators? You should atleast use a MAX232 or something simular

Max 232 et al are not "isolators" they are "transcievers".

The prescence or not of a transciever will not affect whether he blows the PC serial port. Of course a transciever MUST be present.

What he (should) mean by "isolator" is using an isolated RS232 transciever such as MAX251/MAX3250.

there are loads of RS232 buffers (gender changer style) out there
I have never seen such a thing. However such a device will not necessarily be isolated. If you decide to use one, at least make sure you get an isolated one (NO connection between ground and ground.

Erik

List of 13 messages in thread
TopicAuthorDate
Serial Port            01/01/70 00:00      
   ground is not ground            01/01/70 00:00      
      Grounded !!!            01/01/70 00:00      
         yes, if you measure            01/01/70 00:00      
            Connecting grounds of different circuits            01/01/70 00:00      
               connected            01/01/70 00:00      
   No isolators?            01/01/70 00:00      
      MAX232 is not an isolator            01/01/70 00:00      
         B & B Electronics            01/01/70 00:00      
   MAX232 is no isolator indeed            01/01/70 00:00      
   IMHO Erik is right..            01/01/70 00:00      
   serial port cable            01/01/70 00:00      
   Damages???            01/01/70 00:00      

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