Using an Interposing Relay

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Using an Interposing Relay

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23-02-2014, 12:26

James Lightfoot James Lightfoot is offline

Programming & Electrical Mentor

FRC #3737 (Rotoraptors)

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Join Date: Jan 2014

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Location: Wayne County, NC

Posts: 21

Re: Using an Interposing Relay

Quote:

Originally Posted by Alan Anderson

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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