Author Topic: Photocoupler Orentation Question  (Read 2519 times)

selfdestroyer

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Photocoupler Orentation Question
« on: March 21, 2013, 10:23:25 AM »
I picked up a few MI1210CLF-R from Smallbear for my Multiplex Jr. and I just want to verify what seems to be the obvious. The longer pin of the 4 is the positive for the LED side right? I only ask since my modulation does not seem to be working on my Multiplex Jr. and I am just eliminating potential issues.



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midwayfair

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Re: Photocoupler Orentation Question
« Reply #1 on: March 21, 2013, 10:35:56 AM »
Yup, the dot is the anode.
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selfdestroyer

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Re: Photocoupler Orentation Question
« Reply #2 on: March 21, 2013, 10:44:43 AM »
thanks so much. well, I guess that's not my problem. I will mess with it some more tonight be fore I post in Josh's sub forum.

gtr2

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Re: Photocoupler Orentation Question
« Reply #3 on: March 21, 2013, 01:36:58 PM »
THe anode (dot) should be soldered to the square pad.  Also, if you don't have anything soldered in as a spst switch at sw1 you need to have a jumper there.

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selfdestroyer

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Re: Photocoupler Orentation Question
« Reply #4 on: March 21, 2013, 03:57:48 PM »
THe anode (dot) should be soldered to the square pad.  Also, if you don't have anything soldered in as a spst switch at sw1 you need to have a jumper there.

Josh

Thanks Josh for the info, I checked on my lunch break and that is indeed how I have it hooked up. I also have a SPDT toggle on the SW pads. So I guess I may have to back trace it and see if maybe I have a bad part installed. Does the LED need to be installed for modulation to work? I do not have anything soldered on yet.

gtr2

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Re: Photocoupler Orentation Question
« Reply #5 on: March 21, 2013, 05:31:11 PM »
Yes, the LED needs to be installed or a jumper should be in it's place.  It will not work without it.

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selfdestroyer

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Re: Photocoupler Orentation Question
« Reply #6 on: March 22, 2013, 12:14:27 AM »
Yes, the LED needs to be installed or a jumper should be in it's place.  It will not work without it.

Josh

That fixed it. Thanks so much for the help.