| ??? 09/01/05 06:11 Read: times |
#100404 - ferite bead, series termination, or Responding to: ???'s previous message |
Erik, Kai and others - thanx for the input
My initial idea was to let a 74HC14 drive the ribboncable, and have a BC547 in the other end to drive the relay. That seems to be a litle minimalistic. I could drive the cable with a busdriver type 74HC chip, add a series termination resistor and have a 74HC14 at the receiving end. And I could move the driver to the controller board, and simply let the ribboncable be connections to the relaycoil. This solution wont be sensitive to interferrance, however it might radiate some noise. Since there isnt any noise sensitive components around other than the controllerboard it self, that should not be of any concern. But basicly I think its wrong to have the relay currents to travel to the controllerboard, where it dosnt belong. The ribboncable is aprox. 1 meter (3') long. Still - any comment apreaciated have a nice day Per |
| 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 |