| ??? 11/29/04 21:55 Read: times Msg Score: 0 -1 Message Not Useful +1 Underrated |
#82193 - EMI problem solution. Responding to: ???'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. |
| Topic | Author | Date |
| EMI/RFI noise | 01/01/70 00:00 | |
| Keep looking | 01/01/70 00:00 | |
| Brownout? | 01/01/70 00:00 | |
| It is Brownout | 01/01/70 00:00 | |
| brownout protection | 01/01/70 00:00 | |
| EMI/ RFI solutions. | 01/01/70 00:00 | |
| Archives | 01/01/70 00:00 | |
| 0.1uF | 01/01/70 00:00 | |
| Caps | 01/01/70 00:00 | |
| Highcap ceramics against paralleling | 01/01/70 00:00 | |
| Highcap Ceramic. | 01/01/70 00:00 | |
Thanks! | 01/01/70 00:00 | |
| .01uf | 01/01/70 00:00 | |
| decoupling | 01/01/70 00:00 | |
| EMI problem solution. | 01/01/70 00:00 | |
| is it ? | 01/01/70 00:00 | |
| That's all | 01/01/70 00:00 | |
| to Alberto | 01/01/70 00:00 | |
| To Erik | 01/01/70 00:00 | |
| Electrically Noisy Environments | 01/01/70 00:00 | |
| brownout - no, everything else - maybe | 01/01/70 00:00 | |
| Problem solved | 01/01/70 00:00 |