| ??? 09/11/07 05:09 Read: times |
#144354 - non linear Responding to: ???'s previous message |
Thanks Rob,
Your question: Can you explain just how "the reading is not coming properly"? Are you having trouble with offset, range, non-linearity, or what? What kind of resistors are you using for your divider? Have you considered their voltage coefficient? My answer: I am using imported resistor divider (1M/1000M). It is giving entirely non-linear readings. The voltage coefficient is good. My DPM is 2V DPM. I can replace it to 20V DPM also. But my ADC is 12-bit with VREF 2.5V. with this ADC, I can count only 4096. This resolution also may not sufficient I feel for this purpose. Pl. suggest. |
| Topic | Author | Date |
| High Voltage measurement | 01/01/70 00:00 | |
| reply | 01/01/70 00:00 | |
| Proper reading? | 01/01/70 00:00 | |
| non linear | 01/01/70 00:00 | |
| Resistor divider rating | 01/01/70 00:00 | |
| NON-linear ??? | 01/01/70 00:00 | |
| what is 'across' the 1M | 01/01/70 00:00 | |
| Does it matter | 01/01/70 00:00 | |
| e.g. A \'protection diode\' may leak a bit | 01/01/70 00:00 | |
| Parasitic ? | 01/01/70 00:00 | |
| DPM are normally very highohmic ... | 01/01/70 00:00 | |
| the problems | 01/01/70 00:00 | |
| A good idea, indeed! | 01/01/70 00:00 | |
| DPM input | 01/01/70 00:00 | |
| Thanks to all | 01/01/70 00:00 | |
| That's all very well | 01/01/70 00:00 | |
| Yes, Jprao, please answer our questions! | 01/01/70 00:00 | |
| DIffierent Divider Perhaps | 01/01/70 00:00 | |
| DPM? | 01/01/70 00:00 | |
| DPM is a widely used term... | 01/01/70 00:00 | |
| many DPMs use ICL7106 | 01/01/70 00:00 | |
Yes, evolves into a heart-stopping thread... | 01/01/70 00:00 |