Timeline for Optocoupler Input or Encoder Output Problem?
Current License: CC BY-SA 4.0
10 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 17, 2022 at 23:06 | answer | added | D.A.S. | timeline score: 0 | |
| Mar 17, 2022 at 22:55 | comment | added | Kartman | Congrats on a well formed question. I’d question if you need the opto coupler at all but the encoder datasheet is sparse on the voltage and current rating of the phototransistor. Saying you can’t add parts is probably not the best strategy - you’ve started with a poor design and you ‘might’ be able to tweak the values but if push comes to shove you’ll have to change the design and add/change parts. It wasn’t a major issue years ago to do this. | |
| Mar 17, 2022 at 22:21 | answer | added | Miron | timeline score: 0 | |
| Mar 17, 2022 at 22:20 | answer | added | TonyM | timeline score: 0 | |
| Mar 17, 2022 at 22:17 | answer | added | John D | timeline score: 1 | |
| Mar 17, 2022 at 22:16 | answer | added | rdtsc | timeline score: 0 | |
| Mar 17, 2022 at 22:14 | comment | added | Ariel Narboada | Hi DKNguyen, I think you're right. I'll remove R2. Encoder should be able to accept 3.8mA from the R1/LED pull-up right? | |
| Mar 17, 2022 at 21:49 | comment | added | DKNguyen | R2 doesn't need to be there at all. The voltage drop across the CE might be too high for the R1 you chose. It's only specified as being no greater than 1V. | |
| Mar 17, 2022 at 21:31 | history | edited | toolic | CC BY-SA 4.0 |
deleted 14 characters in body
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| Mar 17, 2022 at 21:26 | history | asked | Ariel Narboada | CC BY-SA 4.0 |