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BASIC Stamp
Optp isolators
Newzed
Posts:
2,503
2005-07-10 18:05
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
KenM
Posts:
657
2005-07-10 18:10
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?
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Ken
Post Edited (KenM) : 7/10/2005 7:58:57 PM GMT
Newzed
Posts:
2,503
2005-07-10 18:13
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
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Comments
Do you have an IC number or device?
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Ken
Post Edited (KenM) : 7/10/2005 7:58:57 PM GMT
Sid