| ??? 05/26/04 05:32 Read: times |
#71224 - RE: Input signals to A/D Responding to: ???'s previous message |
Thanks Kia for the helpful information and the circuit!
Some of the parts use +10V and -5V is the +10 a minimum value and +24V can be used instead? The electronics is potted in a solution that is UL1604 approved which makes LED's covered up for the final assembly and not visible. They operate the units in corrosive environments and use the potting compound to protect the electronics from corrosive chemicals. Unfortunately LEDs would not be visable in the final product. I have a few questions about the circuit. 1. The TLC352 LED illuminates when the common mode is at +3V or -3V? Could that common mode out of range signal be a 5V logic signal that is compatible to an input into a microcontroller? 2. You had mentioned that using a BJT transistor instead of a FET for the current limit would eliminate the use of a trimmer. Can you give some insight on how that would be accomplished using a BJT? Is it a matter of looking at saturation curves like on the FET? The spec for the input voltage is listed as being good for 12 - 28V DC. Joe |
| Topic | Author | Date |
| Input signals to A/D | 01/01/70 00:00 | |
| RE: Input signals to A/D | 01/01/70 00:00 | |
| To be added ... | 01/01/70 00:00 | |
| RE: Input signals to A/D | 01/01/70 00:00 | |
| RE: Input signals to A/D | 01/01/70 00:00 | |
| RE: Input signals to A/D | 01/01/70 00:00 | |
| RE: Input signals to A/D | 01/01/70 00:00 | |
| RE: Input signals to A/D | 01/01/70 00:00 | |
| RE: Input signals to A/D | 01/01/70 00:00 | |
| RE: Input signals to A/D | 01/01/70 00:00 | |
| RE: Input signals to A/D | 01/01/70 00:00 | |
| RE: Input signals to A/D | 01/01/70 00:00 | |
| RE: Input signals to A/D | 01/01/70 00:00 | |
| RE: Input signals to A/D - CMRR | 01/01/70 00:00 | |
| Answer + circuit modification | 01/01/70 00:00 | |
| RE: Input signals to A/D | 01/01/70 00:00 | |
| RE: Input signals to A/D | 01/01/70 00:00 | |
| RE: Input signals to A/D | 01/01/70 00:00 | |
| RE: Input signals to A/D | 01/01/70 00:00 | |
| RE: Input signals to A/D | 01/01/70 00:00 | |
| RE: Input signals to A/D | 01/01/70 00:00 | |
| RE: Input signals to A/D | 01/01/70 00:00 | |
| RE: Input signals to A/D | 01/01/70 00:00 | |
RE: Input signals to A/D | 01/01/70 00:00 |