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???
03/20/07 08:40
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 		 #135360 - Parasite power?
Responding to: ???'s previous message
Jez Smith said:
Obviously you can just increase the conversion time to take account of this

Presumably, then, you're using parasite power?

If you use a separate supply line (3 wires to the device), you can specifically detect when the conversion is done...


List of 34 messages in thread
TopicAuthorDate
thermometer with a 89c52            01/01/70 00:00      
   e-mail            01/01/70 00:00      
   You\\\'ve got lots of options including...            01/01/70 00:00      
      Options            01/01/70 00:00      
   start by making your A/D convertor work            01/01/70 00:00      
      What the hell are you posting??            01/01/70 00:00      
      Not for a direct-to-digital sensor!            01/01/70 00:00      
   Link            01/01/70 00:00      
   Background?            01/01/70 00:00      
      thanx            01/01/70 00:00      
         Project?            01/01/70 00:00      
            hobby            01/01/70 00:00      
               Plenty of time to think, then!            01/01/70 00:00      
   Thermistor, 12-bit ADC, 89S52 and LED display            01/01/70 00:00      
      lm35            01/01/70 00:00      
         Thermistor Thermometer: LCD version            01/01/70 00:00      
            Think!            01/01/70 00:00      
         Interesting links that have to do with the LM35            01/01/70 00:00      
            Interesting links on how to make a simple ADC...            01/01/70 00:00      
            You forgot the most important one            01/01/70 00:00      
               I was assuming that he was already there!            01/01/70 00:00      
   the easy way            01/01/70 00:00      
      Easy?            01/01/70 00:00      
         Re Easy            01/01/70 00:00      
            There's the problem!            01/01/70 00:00      
            My friend's opinion            01/01/70 00:00      
               I hope analog            01/01/70 00:00      
                  In that case            01/01/70 00:00      
               understanding basics            01/01/70 00:00      
                  slight warning about 1-wire thermo sensors            01/01/70 00:00      
                     Parasite power?            01/01/70 00:00      
                        yep parasite power            01/01/70 00:00      
               not believeable !            01/01/70 00:00      
                  timing diagrams can look daunting.            01/01/70 00:00      

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