transformer output wire

J

jonny

Guest
i have a board cam and im going to hook up a 12 vac transformer to it.
the end is cut off and i need to know witch wire is the + or _ one
wire is solid color tha other has white stripe on it.
thank,s jonny
 
"jonny" <jonnycoxxx@netscape.net> wrote in message
news:e1fef500.0310072214.19647af0@posting.google.com...
i have a board cam and im going to hook up a 12 vac transformer to it.
the end is cut off and i need to know witch wire is the + or _ one
wire is solid color tha other has white stripe on it.
thank,s jonny
If you will be using AC it doesn't matter, if you are talking about the DC
Click to expand...
output from a plugpack it would be advisable to check on the Cam board. You
should be able to work out the polarity by looking at the electrolytic
capacitors and following one of the connections to the cable. Most likely
the easiest would be following the common ground tracks.

--
Regards ............... Rheilly Phoull
 
"Rheilly Phoull" <Rheilly@bigpond.com.au> writes:

"jonny" <jonnycoxxx@netscape.net> wrote in message
news:e1fef500.0310072214.19647af0@posting.google.com...
i have a board cam and im going to hook up a 12 vac transformer to it.
the end is cut off and i need to know witch wire is the + or _ one
wire is solid color tha other has white stripe on it.
thank,s jonny
If you will be using AC it doesn't matter, if you are talking about the DC
output from a plugpack it would be advisable to check on the Cam board. You
should be able to work out the polarity by looking at the electrolytic
capacitors and following one of the connections to the cable. Most likely
the easiest would be following the common ground tracks.
Click to expand...
Assuming it is DC which is almost certain, you need to make sure your
adapter puts out DC and that it's output voltage is close to 12 V.

An unregulated wall adapter may put out much more than the rated output
voltage under a small load. I've seen some go 2X or more! So, both
polarity and output voltage should be checked with a multimeter before
hooking it up and frying something.

--- sam | Sci.Electronics.Repair FAQ Home Page: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Site Info: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: The email address in this message header may no longer work. To
contact me, please use the Feedback Form at repairfaq.org. Thanks.
 
Do you mean you are hooking up a "wall wort"? That would be DC and the
polarity could be easily checked with a voltmeter. Good luck, Ross

"jonny" <jonnycoxxx@netscape.net> wrote in message
news:e1fef500.0310072214.19647af0@posting.google.com...
i have a board cam and im going to hook up a 12 vac transformer to it.
the end is cut off and i need to know witch wire is the + or _ one
wire is solid color tha other has white stripe on it.
thank,s jonny
Click to expand...
 
Could still be an AC transformer. If it is AC, the solid wire will be the
HOT wire and the wirw with the white stripe will be the neutral. If it is DC
the Solid will be the positve wire.


"Ross Mac" <macroeng@example.invalid> wrote in message
news:pQYgb.173373$3o3.12758719@bgtnsc05-news.ops.worldnet.att.net...
Do you mean you are hooking up a "wall wort"? That would be DC and the
polarity could be easily checked with a voltmeter. Good luck, Ross

"jonny" <jonnycoxxx@netscape.net> wrote in message
news:e1fef500.0310072214.19647af0@posting.google.com...
i have a board cam and im going to hook up a 12 vac transformer to it.
the end is cut off and i need to know witch wire is the + or _ one
wire is solid color tha other has white stripe on it.
thank,s jonny
Click to expand...
 
"red" <none@none.com> writes:

Could still be an AC transformer. If it is AC, the solid wire will be the
HOT wire and the wirw with the white stripe will be the neutral. If it is DC
the Solid will be the positve wire.
Click to expand...
Excuse me? Neutral on the secondary of a wall adapter transformer? :)

--- sam | Sci.Electronics.Repair FAQ Home Page: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Site Info: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: The email address in this message header may no longer work. To
contact me, please use the Feedback Form at repairfaq.org. Thanks.
 
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