| ??? 12/06/04 23:43 Read: times |
#82663 - 1-Wire = 3 Pins?! Responding to: ???'s previous message |
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. It sounds strange, but it's true: A Dallas 1-WireTM link requires up to three wires! (1). The actual 1-WireTM DQ data line; (2). Vdd supply line; (3). Ground reference line. If you already have a suitable Ground line, you can do away with (3) - so only two extra wires are needed; Most 1-Wire devices can be "parasite" powered, where the DQ data line also provides the power feed - if this works for your application, you can do away with (2); If both of the above apply, you can do away with both (2) and (3) - and you do end up with just one extra wire! |
| 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 |