Whats pos & neg on a coaxial type charger plug?

WARNING: They are not all the same. If you had to make a gamble, the outside shell would be the negative and the inside contact would be the positive. But as I say, they aren't all the same. I have a Coleman electric fluorescent lantern that uses the outside shell as positive and the inside terminal as negative, so you have to be careful.

Also, be sure of the voltage. Many are 6 volt, some 9 volt, others 12 volt, etc.

As for car cigarette lighters, the outer shell is negative and the inner contact is positive. This is true for basically any American car built within the last 50 years. So you're pretty much guaranteed to get that one right.

 

NO NO NO TIM........

COAX WIRE IS USUALLY 75 OR 50 OHM....WILL NOT WORK

USE A PIECE OF LAMP OR ZIP CORD OR A CHEAP EXTENSION CORD..AND CUT IT AS NEEDED

THERES 2 WIRES ON IT

1 IS POS

1 IS NEGATIVE

BRUCE


PS TO ANSWER YOUR QUESTION...ON ALL COAX WIRE, THE GOLD OR SILVER SHIELD IN THE MIDDLE CORE IS ALWAYS POSITIVE, THE OUTSIDE PERIMETERS WHEN ATTACHED ALWAYS IS THE GROUND OR NEGATIVE

 

Bruce, I think that Tim was using the term "coaxial" only in reference to the way the plugs are made: circular with an inner and outer shell in a coaxial fashion. But you are correct Bruce. One would not want to use a true coaxial cable as a power cord. It would work, but very weird and un-professional.

 

NO PROB TIM,

COAXIAL CONNECTORS ARE USED AS

F CONNECTORS
OR

PL259 CONNECTORS

OR

BNC OR TNC CONNECTORS

AGREEDED ARLE????

 

Absolutely agreed. I wonder sometimes that the electronics industry designs new connectors just for the purpose of making more money by selling another type of connector! As I type this posting, I am surrounded by literally thousands of miles of 70 ohm coax cable that feeds every corner of our building here at the TV station. A few years ago, most installations started to use a new type of 70 ohm video cable that is about half the diameter of the standard black video cable. When you have thousands of cables running through giant troughs, it pays to use a smaller cable to save space. The backsides of some of our equipment racks are absolute hideous nightmares because of all the cables crammed into them.
A few weeks ago, we finally removed some of the more ancient PL259 connectors that still existed among the thousands of BNC connectors. But of course the PL259s never hit the dumpster because fellow scroungers saved them for me!