On the round plug is the (+) positive in the center, and the (-) outside around the center (O) ?
365118
Dear Piero, Using the key provided turn the orange disc on the left to +. in the middle of each disc is a tiny arrow shaped opening to put the key in. On the right turn the arrow to the voltage you need. On the back of the box it states " If the product does not function, change the polarity. That is all you need to do.
365119
Dear Peiro, I am looking at the device and I don't understand your question. Are you talking about the orangedials on the back of the box as pictured here?
365120
Dear Peiro, I am looking at the device and I don't understand your question. Are you talking about the orange dials on the back of the box as pictured here?
365121
As shown in the photo, the yellow dial on the Left is the polarity selector. You can select which polarity you want.
1630283
Sorry, but I don't remember. Mine was used with a 12v DC converter for a light strip, so polarity is a definite concern
1776963
Middle is positive or "hot" wire. The 2 ends are the negatives and brass is ground.
456385
Use a voltmeter. If the needle goes positive then the red lead wire is positive.
1830854
One the ones that I have the + and - terminals are marked on the bottom. The + terminal is the one closest to the center and the - terminal is the one closest to the edge.
1662969
When facing the front of the meter, the port on the left is negative (-) while the port on the right is positive (+). In other words, if you apply a positive pressure to the left port the reading is negative and if you apply a positive pressure to the right port the reading is positive.
1469172
Typically the white or dash-dot wire is positive and the unmarked black one is negative. As to the plug itself, the center pin is positive and the shield is negative. Of course, it is always best to test with a volt meter but this is standard electrical wire code.
285435
I can't say with 100% certainty, but usually the center pin is positive.http://en.wikipedia.org/wiki/DC_connector#Cylindrical_connectorsLast sentence in that section.
1379032
Amazon carries for under sdollars make sure that you get the correct polarity--- Positive center negative outside!!!!
1899692
The symbol above the + (power) is the symbol for "ground" while the other symbol is for the item you want to come on when the switch is in the ON position. Hope this helps.
2082619
Chris, Most of these DC power supplies are center positive. The connector configuration (polarity) is always displayed on the front or the back label on the PS.
1086603
Make sure the polarity is correct. The negative pin -- Is marked on backside.
817181
The one with Red O-Ring is the positive. There're also positive and negative mark on them.
987890
The center wire should be Positive. Sorry that's the best I can tell you, it's been way too long since I installed mine.
1333756
The polarity of the T connectors is standard -- the top bar of the T is positive and the post is negative. The labels on the diagram in the instructions are misleading since they are opposite to the orientation of the T sockets.
495073
I believe that it is the larger one. It should show a + and - at the base of the terminals. If not marked with + or - it will have a red dot on the positive terminal. If still not marked for some reason, then there is a capacitor soldered to the + terminal. It will be a little round thing soldered to one of the leads that goes to the tweeter. This is the positive terminal.
1865105
If what you mean is the part that plugs into the device (not the wall) then yes the center part on the inside is positive and the outer shell is negative. I BELIEVE, NOT 110% SURE THOUGH.