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Unread 23-02-2014, 12:26
James Lightfoot James Lightfoot is offline
Programming & Electrical Mentor
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Re: Using an Interposing Relay

Quote:
Originally Posted by Alan Anderson View Post
The connection you describe is correct. However, the NPN part is a sinking output. It won't source current.
Thanks. So, the sinking output of the PE (it's providing to neg/common) needs the sourcing input of the GPIO; hence, connecting the PE's white or black wire to pin 1 (SIG) of a GPIO is correct. I get, and then when it comes up later my head gets twisted over it again.

Thanks, Alan.
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