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Per Westermark
03/24/12 14:55
Read: 535 times
Sweden


 
#186866 - Potential
Responding to: Muhammad Naeem's previous message
It's common to have a common ground. After all - unless you make the sections totally isolated from each others (transformers, optocouplers etc), there need to be a potential reference between them or you will not be able to send electrical signal between them.

The issue here is more if all parts of the design should be a single huge ground plane on a PCB, or if there should be cutouts in the PCB to reduce the amount of noise between power electronics, digital electronics and analog electronics. Still a common ground, but with filtering at critical locations.

List of 5 messages in thread
TopicAuthorDate
Different power supply but common ground      Muhammad Naeem      03/24/12 14:28      
   Potential      Per Westermark      03/24/12 14:55      
   Common ground...      Kai Klaas      03/24/12 18:58      
   See Applicable Comment...      Michael Karas      03/25/12 08:38      
   yes -no      Erik Malund      03/26/12 07:05      

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