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???
11/06/05 12:18
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#103333 - Solid ground plane is needed!
Responding to: ???'s previous message
Suresh said:
In two layer micro based PCB design can i have connected the GND net to Bottom layer copper pour. But i have doubt whether i could connect the Vcc (+5VDC) to Top layer copper pour.


If you want to design something reliable, then you need a piece of ground under each single signal, so you will need a PCB containing a solid ground plane. Remember, that noise on ground is much more critical than noise on Vcc. So, fill every free area on your board with ground, connect it to your ground plane by as many vias as possible and use proper supply decoupling with each chip.

Kai

List of 16 messages in thread
TopicAuthorDate
two layer PCB            01/01/70 00:00      
   +5VDC also drives PhotoMOS relays            01/01/70 00:00      
   Solid ground plane is needed!            01/01/70 00:00      
      what i have done is            01/01/70 00:00      
         what you have done ...            01/01/70 00:00      
            Thermal relief's            01/01/70 00:00      
               You need a solid ground plane            01/01/70 00:00      
                  I want the best money can buy, but do no            01/01/70 00:00      
                  Thermal relief in PCB's            01/01/70 00:00      
                     An illustration...            01/01/70 00:00      
                        went through the design but            01/01/70 00:00      
                           Thermal reliefs were demonstrated            01/01/70 00:00      
                           who are you posting to????            01/01/70 00:00      
               thermal reliefs only ease soldering            01/01/70 00:00      
                  Resistance calculation for thrmal relief            01/01/70 00:00      
                     you better read .....            01/01/70 00:00      

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