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???
06/19/08 12:59
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Msg Score: +1
 +1 Good Answer/Helpful		 #156038 - no
Responding to: ???'s previous message
Must the input and output sides of the opto coupler share the same GND bus?
no, if they do that you may as well not use the optocoupler.

the purpose of an optocoupler is to isolate a from b and if you "share the same GND bus" there is no isolation.

Erik


List of 40 messages in thread
TopicAuthorDate
How to drive solenoids?            01/01/70 00:00      
   Sure a MOSFET but do consider...            01/01/70 00:00      
      Give more infomation?            01/01/70 00:00      
         Suggestons            01/01/70 00:00      
            MOSFET burn out?            01/01/70 00:00      
               possibly            01/01/70 00:00      
               Discharging coil            01/01/70 00:00      
                  Overkill            01/01/70 00:00      
                  Most MOSFETs have those built-in.            01/01/70 00:00      
      same GND bus.            01/01/70 00:00      
         no            01/01/70 00:00      
   Use a solenoid driver!            01/01/70 00:00      
   same GND bus.            01/01/70 00:00      
      High in-rush current consideration            01/01/70 00:00      
         mosfet drive from logic level?            01/01/70 00:00      
            Availability vs Suitability            01/01/70 00:00      
            mosfet drive from logic level            01/01/70 00:00      
               for googling purposes            01/01/70 00:00      
                  not exactly            01/01/70 00:00      
                     using google            01/01/70 00:00      
   about the solonoid valve            01/01/70 00:00      
   ABOUT THE S.V.            01/01/70 00:00      
   H11B1 and IRF510 Drive solenoid But....?            01/01/70 00:00      
      Sounds like inadequate power supply            01/01/70 00:00      
         Suitable Power supply.            01/01/70 00:00      
            12V 6.5A?            01/01/70 00:00      
            Think about it!            01/01/70 00:00      
      do the math            01/01/70 00:00      
   12v 8A power supply            01/01/70 00:00      
      none, except            01/01/70 00:00      
         also            01/01/70 00:00      
      Maybe a better starting point is....            01/01/70 00:00      
      Ever heard of fuses...            01/01/70 00:00      
         difficult, ....            01/01/70 00:00      
            plural            01/01/70 00:00      
               I do not understand            01/01/70 00:00      
                  Split tree of protection...            01/01/70 00:00      
                     Absolutely!            01/01/70 00:00      
                        well,            01/01/70 00:00      
                        The name used...            01/01/70 00:00      

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