DC Power Cable Wiring

Thread Starter

123445

Joined Mar 15, 2013
22
Where goes RED+ and BLACK- ?
- Could someone draw ?


Where goes RED+ and BLACK- ?
- Could someone draw ?
 

spark8217

Joined Aug 29, 2011
64
Hi
Im sure if you google what you require there will be lots of clear images to be selected for the application you need.

cheers
spark 8217
 

Thread Starter

123445

Joined Mar 15, 2013
22
"spark 8217" I'm more of an visual people. Some written explanations I have seen but not images on google\altavista\etc... Don't want to blow my PWM-unit PCB :(
- If you have time mark +,- on photos and upload them on free picture sites like: Photobucket.com, Flickr.com or such...
 

ScottWang

Joined Aug 23, 2012
6,827
The photo shows that it is a 3 pins stereo plug connector, it's not the two pins for power.

You can also used it for dual power supply.

If you want to using for a single power supply that you should be choosing like this page.

Two wires for plug and three pins for block, you can used it for the power supply or mono headphone.
 

Thread Starter

123445

Joined Mar 15, 2013
22
OOoppss... Mistake Forget that audio cable below... First picture is the right one in question...
Bought this:

and bought this:

Now connecting wires problem:

Where goes red+ and black- wires ?
 
Last edited:
There is no standard way of wiring these power connectors. Some equipment uses the centre conductor as + with the outer as - and some equipment uses the opposite.

If you are wiring up both the jack and the socket then you can decide for yourself which way to connect it.

There are three connecions on the socket because it includes a switch so you can detect if a jack is inserted. Plug the jack into the socket and use a multimeter to see which of the three conections is which.
 

dentedduck

Joined Apr 3, 2013
2
Yes, there is no standard way. One tip you could follow though, is to keep the positive shielded in the center. This way if you happen to drop the plug connector onto a metal table (as we use in optics), you won't short things out. If you don't think that's an issue, then you can go either way. Just be consistent.

Dave
 

ScottWang

Joined Aug 23, 2012
6,827
Normally the centre is used for positive, but if this just using by your own then you can define by yourself.

You can using multimeter set on R range to measure all the pins when you unplug and plug in.

 

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Lundwall_Paul

Joined Oct 18, 2011
226
Center should used as positive. Because it isn't exposed. If the outside of this connector was used as the positive it could easily grounded during insertion, touching the chasse or just hanging free thus damaging the source supply.
 
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