| ??? 06/13/06 16:29 Read: times |
#118242 - We need further information Responding to: ???'s previous message |
Harshada said:
i am using a 12v power supply.in my application the chasis is connected to earth.i have to check whether the 12v or 0v(ground) gets shorted with the chasis and display the fault.how do i sense this fault.and how do i practically check it. You haven't given us enough information to answer this question. 1. Why can the 12V supply become shorted to chassis? Why is it needed to display this? 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. A detection circuit will nearly always worsen the isolation properties between chassis and 12V. How much worsening is allowed? Could a low ohmic resistor be connected between chassis and 12V supply, which would destroy the isolation between both sides? What is allowed to be connected between both sides? Kai PS.: You should have started a new thread... |
| 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 |