Shop OBEX P1 Docs P2 Docs Learn Events
Optp isolators — Parallax Forums

Optp isolators

NewzedNewzed Posts: 2,503
edited 2005-07-10 18:13 in BASIC Stamp
Do most opto isolators - or couplers - have an internal resistor for the LED or does this have to be added externally?

Thanks

Sid

Comments

  • KenMKenM Posts: 657
    edited 2005-07-10 18:10
    Most I have seen or worked with require a current limiting resistor on the input side.

    Do you have an IC number or device?


    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Ken

    Post Edited (KenM) : 7/10/2005 7:58:57 PM GMT
  • NewzedNewzed Posts: 2,503
    edited 2005-07-10 18:13
    Nope - I have four inside a Flashcut IB463 stepper driver and I can't get to them.· Just wanted to make sure about the external circuitry.

    Sid
Sign In or Register to comment.