Timeline for Circuit to convert negative voltages to MCU / FPGA
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 17, 2020 at 12:37 | vote | accept | David777 | ||
| Nov 17, 2020 at 12:36 | comment | added | Andy aka | @David777 I'll take a look but if this is done then you need to select an answer and formally accept it. The fact that you were mistaken in assuming the tacho was an AC output type for this question is irrelevant. | |
| Nov 17, 2020 at 12:34 | comment | added | David777 | @Andyaka Yes I am finished with this Q & A. The tacho is actually AC and not DC like explained in this post. I have posted a new question if you are interested in answering | |
| Nov 17, 2020 at 12:12 | comment | added | Andy aka | @David777 are you done with this Q and A yet? If not, is there anything that you need to know? | |
| Nov 11, 2020 at 16:40 | comment | added | Chris Stratton | If you are concerned about slow speeds then you may not want a rectifier solution as that will fail to distinguish direction, including the case where the motor is spinning at the right rate but being spun by the load in the opposite of the desired direction, leading to no corrective drive being applied. So if you need low speed accuracy you may want a biased bidirectional setup instead so that zero speed is half range on the ADC and you can do absolute comparisons against a goal rather than having to guess a direction "mode bit". | |
| Nov 11, 2020 at 16:31 | comment | added | David777 | Thanks for the answer! I see how biasing a precision full wave rectifier could work. I will look into it and come back if I have any more questions. | |
| Nov 11, 2020 at 16:20 | history | answered | Andy aka | CC BY-SA 4.0 |