| ??? 08/22/05 12:13 Read: times |
#99805 - comments. Responding to: ???'s previous message |
move the driver transistor to the board with the micro and other stuff. That way I wont have any low level (TTL) wires rounning around - only 24V lines. My concern is relay noise induced in the other electronics.
That will make your lines "better" and make your board "worse". You will have the 24V returns running on the ground of your board. There are many solutions, all depend on "budget" vs "risk". If this is not a whole lot of signals, and there is money to make sure, I would consider either 422/485 drivers and receivers or optical isolation. The thing you will need most of all is to keep the 24V (feed AND return) separate from your logical power. If that is done, then you only have to be concerned with "radiated" noise. Again all depend on so many factors that can not be communicated in a forum. Good luck. Erik |
| Topic | Author | Date |
| driving ribboncabel - ESD precautions | 01/01/70 00:00 | |
| on interconnect | 01/01/70 00:00 | |
| Alternative | 01/01/70 00:00 | |
| comments. | 01/01/70 00:00 | |
| Recommended scheme | 01/01/70 00:00 | |
| 74H? | 01/01/70 00:00 | |
| nope | 01/01/70 00:00 | |
| Don't forget series termination | 01/01/70 00:00 | |
| series termination | 01/01/70 00:00 | |
| re: series termination | 01/01/70 00:00 | |
| an, in my opinion, much better way is to | 01/01/70 00:00 | |
| Series termination is the correct method | 01/01/70 00:00 | |
| both? | 01/01/70 00:00 | |
| Series termination prevents overshot | 01/01/70 00:00 | |
| HUH? | 01/01/70 00:00 | |
| Huh Huh? | 01/01/70 00:00 | |
| read the original post | 01/01/70 00:00 | |
| Think about the newbies | 01/01/70 00:00 | |
| That is exacltly why I always push the u | 01/01/70 00:00 | |
| RS485 is a good alternative, indeed | 01/01/70 00:00 | |
| Use a relay driver and sleep well ... | 01/01/70 00:00 | |
ferite bead, series termination, or | 01/01/70 00:00 |