Author Topic: Minimal wiring relay contacts.  (Read 630 times)

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Offline orneaTopic starter

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Minimal wiring relay contacts.
« on: May 16, 2019, 11:26:25 am »
I often use relay shields or completed boards that may be populated with relays.

They typically break out the NO, NC & COM via a 3 pin screw terminal.

Often I simply want to switch the same supply (12VDC) that is feeding the board.  To wire this via screw terminal gets messy and I always find I need somewhere to connect the common ground.

I have taken to soldering bodge wires as shown in the diagram attached which appears to an elegant solution.   But curious if it is bad.  I can see it is bad for some unsuspecting person who comes after me but if its just me I think it fine.

The bodge wires provide, Normally ON(2-3), Normally OFF (2-1) and Always ON (1-3) terminals.  It is clean, tidy and allows me to easily install the boards and connect the relay driven loads.

 I am about to incorporate this in my own PCB design with clearly labelled pinouts. 

I think it is a good solution but feel there is something I am missing as to why this is bad.
« Last Edit: May 16, 2019, 11:36:11 pm by ornea »
 

Online ataradov

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Re: Minimal wiring relay contacts.
« Reply #1 on: May 16, 2019, 05:53:12 pm »
If NO, NC and COM labels are nowhere close to the connector, then I think you are fine. Anyone who has hooked up a lot of relay units like this will be looking for those labels, and not having them will give enough of a pause.
Alex
 
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