Timeline for Optocoupler Input or Encoder Output Problem?
Current License: CC BY-SA 4.0
10 events
| when toggle format | what | by | license | comment | |
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| Mar 18, 2022 at 0:05 | comment | added | D.A.S. | Polarity will invert direction of rotation, so you can invert in S/W but my bad in version 2 | |
| Mar 18, 2022 at 0:03 | comment | added | D.A.S. | My 3rd choice might be better than the BS170 if worst case Vgs(th) | |
| Mar 17, 2022 at 23:53 | comment | added | Ariel Narboada | logic inversion not an issue. looking now at your proposal and use of a single nmos as suggested by miron. | |
| Mar 17, 2022 at 23:51 | history | edited | D.A.S. | CC BY-SA 4.0 |
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| Mar 17, 2022 at 23:50 | comment | added | D.A.S. | Check inverted logic affects | |
| Mar 17, 2022 at 23:40 | comment | added | Ariel Narboada | When you say 'current limiting R', is that the 390ohm resistor in your diagram above? thanks. will now look for this npn. | |
| Mar 17, 2022 at 23:36 | comment | added | D.A.S. | Next time, test your assumptions before layout of PCB. and better, make design specs 1st | |
| Mar 17, 2022 at 23:34 | history | edited | D.A.S. | CC BY-SA 4.0 |
added 180 characters in body
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| Mar 17, 2022 at 23:11 | comment | added | Ariel Narboada | Thanks Tony. V3 has a separate ground. Thus the need for the optocoupler. | |
| Mar 17, 2022 at 23:06 | history | answered | D.A.S. | CC BY-SA 4.0 |