Email: Password: Remember Me | Create Account (Free)


 

Back to Subject List

Old thread has been locked -- no new posts accepted in this thread
Alberto Geraci
11/29/04 15:55
Read: 383 times
Buenos Aires
Argentina


 
Msg Score: 0
 -1 Message Not Useful
 +1 Underrated		 #82193 - EMI problem solution.
Responding to: Daniel Hertanu's previous message
Dear Daniel:

Let me know if you have optocoupled all I/O or relays outputs ?

1-Remember: is the MOST important, that any output or input to be isolated from the rest of the wiring in the machine. !!!!!!

2-The cpu's power supply MUST be only for that, external power supplies could be used for another needed external power.

3-Put .01 AND .1 polycarbonate capacitor (paralel) nearly of each chip, between Vcc and Gnd.

4- If you have some RFI problem, close all CPU board into a metalic box too.

That's all,.... believe me, that will resolve your problem. And use the same procedure, each time in differents projects. You'll forget about that headaches.

Good luck.




List of 22 messages in thread
TopicAuthorDate
EMI/RFI noise      Daniel Hertanu      11/28/04 15:52      
   Keep looking      Steve M. Taylor      11/28/04 16:19      
   Brownout?      Andy Neil      11/28/04 19:00      
      It is Brownout      Prahlad J. Purohit      11/28/04 19:56      
         brownout protection        Erik Malund      11/29/04 15:40      
   EMI/ RFI solutions.      Prahlad J. Purohit      11/28/04 20:02      
   Archives      James Krushlucki      11/28/04 22:08      
      0.1uF      Steve M. Taylor      11/29/04 03:56      
         Caps      Joseph Hebert      11/29/04 14:50      
            Highcap ceramics against paralleling        Kai Klaas      12/05/04 10:18      
               Highcap Ceramic.      Prahlad J. Purohit      12/05/04 11:24      
                  Thanks!      Kai Klaas      12/05/04 11:28      
         .01uf      James Krushlucki      11/30/04 23:07      
      decoupling      Erik Malund      11/29/04 15:42      
   EMI problem solution.      Alberto Geraci      11/29/04 15:55      
      is it ?      Erik Malund      11/29/04 16:00      
         That's all      Alberto Geraci      11/29/04 18:27      
            to Alberto      Erik Malund      11/30/04 07:06      
               To Erik      Alberto Geraci      11/30/04 19:41      
   Electrically Noisy Environments      Andy Neil      11/29/04 17:02      
   brownout - no, everything else - maybe      Daniel Hertanu      12/01/04 11:30      
   Problem solved      Daniel Hertanu      12/04/04 05:21      

Back to Subject List