| ??? 08/19/05 05:30 Read: times |
#99681 - driving ribboncabel - ESD precautions |
Hi guys and girls.
I am working on a new gizmo, wich consist of a µc (atmel P89C51RC2) a LC display and some glue electronics. This is build on a 4 layer PCB and housed in a plastic box on a pole, like the one you see as a part of the cashregister in almost any shop these days. This box/pole is mounted on the machine. The machine is made of iron, welded and/or bolted together. It contains motors and switches, and the last part of the electronics: Mainsfilters, mainstransformer, rectifier and 3 relays to control the motors. I will connect these two parts with a ribboncabel and a single 1 mm2 (yellow/green) wire for ground. Now the question: Is a 74HC14 sufficient to drive the ribboncable? The relays got their own driver and associated protection located next to them, so I can drive them with a std. "one". This "one" however must have enough drivingforce to charge/discharge the ribboncable, and to withstand any noise created by the nasty outside world. Electrostatic discharge, and so on. Any tip, trick and comment apreciated! Ha' en god weekend 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 |