| ??? 12/06/04 17:41 Read: times |
#82632 - But I want something simpler. Responding to: ???'s previous message |
Hi Steve,
Thanks for your reply, Like I said, you could do all that in software too, just a question of offsetting your zero. You are right steve but for doing that I would need a bipolar ADC with 4 input channels since I am taking voltage feedback and reading two front panel control knobs + the current feedback. I couldn't find any bipolar ADC in local market at a reasonable price. PCF8591 + precision Op-Amp is meeting almost all requirements. Use a Dallas one-wire serial memory on another three of pins in your cable from the Rogowski - read the calibration constants from the memory when you boot up. But I know there exists a simpler method where in I can simply make the coils interchangeable by puttin a resistor but I couldnt find more information about this technique what resitor where to put it. I am looking for more information on this technique. Thanks & Regards, Prahlad Purohit |
| Topic | Author | Date |
| Rogowski Coil Interchangeability. | 01/01/70 00:00 | |
| echo | 01/01/70 00:00 | |
| re: Echo | 01/01/70 00:00 | |
| Still missed it then ? | 01/01/70 00:00 | |
| I guess, standard practice for interchg | 01/01/70 00:00 | |
| Re: seeprom storing caliberation. | 01/01/70 00:00 | |
| But I want something simpler. | 01/01/70 00:00 | |
| stability | 01/01/70 00:00 | |
| 1-Wire = 3 Pins?! | 01/01/70 00:00 | |
| Calibration is unavoidable. | 01/01/70 00:00 | |
| Calibetaion through POT. | 01/01/70 00:00 | |
| error budget. | 01/01/70 00:00 | |
| exceeding error budget | 01/01/70 00:00 | |
| OP07 amplifier | 01/01/70 00:00 | |
| Re: Error Budget | 01/01/70 00:00 | |
| CT versus Rogowski coil | 01/01/70 00:00 | |
| Re: CT vs Rogowski Coil | 01/01/70 00:00 | |
Solving in the frequency domain | 01/01/70 00:00 |