Guru
Joined: 05/03/2018
Location: NetherlandsPosts: 6103
| Posted: 05:14pm 10 May 2022 |
@Tinine
If you have 10k from 24V to the LED, and 10k pullup or pulldown at the optocoupler output that will work for all normal optocouplers. Assuming 3.3V.
In specific cases you can tune these values (speed / noise immunity / analog behaviour).
But if speed is an issue, please don't spend too much time tuning. Solve it by using a digital optocoupler. These are far superior in speed to anything you can achieve with normal optocouplers.
Volhout