| ??? 05/19/06 03:15 Read: times |
#116593 - Hopeless without further information... Responding to: ???'s previous message |
Vinita said:
We are using 24v and 5v power supply for our circuit. We have generated 5v from 24 v. We want to monitor these power supplies for shorting with earth.i.e if any of the supply points get shorted with earth we want to sense this shorting and glow an led through microcontroller. It's nearly impossible to find a strategy for your problem, if we do not have even the least amount of information! There are at least three questions, which immediatley come into my mind: 1. Why can the 5V or 24V supply become shorted to earth? I never had a circuit where this could happen anyhow. The grounds yes, but the supply voltages? 2. What do you mean by "shorted"? A zero impedance shorting? Or some unpredictable current flow, like it's observed when a barrier is leaking? 3. Where do you expect this shorting? Somewhere on a plant? Right at the output of your device? Or do you mean ground (0V) by earth? Do you want to detect a short circuit of your supply voltages to ground (0V)? Kai |
| Topic | Author | Date |
| Earth Fault | 01/01/70 00:00 | |
| huh? | 01/01/70 00:00 | |
| Cause or effect? | 01/01/70 00:00 | |
| Supply monitors | 01/01/70 00:00 | |
| Very simple supply monitor | 01/01/70 00:00 | |
| monitoring power supply | 01/01/70 00:00 | |
| Hopeless without further information... | 01/01/70 00:00 | |
| problem solved | 01/01/70 00:00 | |
| Incorrect deduction | 01/01/70 00:00 | |
| Good luck! | 01/01/70 00:00 | |
| not solved ! | 01/01/70 00:00 | |
| voltage divider | 01/01/70 00:00 | |
| it is posted by Vinita, not by micro | 01/01/70 00:00 | |
| Please don't use SMS abbreviations! | 01/01/70 00:00 | |
| Not even a useful suggestion | 01/01/70 00:00 | |
| earth fault | 01/01/70 00:00 | |
| the problem and a possible solution | 01/01/70 00:00 | |
We need further information | 01/01/70 00:00 |