Ask Experts Questions for FREE Help !
Ask
    Afefe10's Avatar
    Afefe10 Posts: 5, Reputation: 1
    New Member
     
    #1

    Dec 18, 2013, 02:39 AM
    Transformer polarity
    Lost transformer-ac110/120v,output-DC 9v 400/500ma. No polarity info. Have 3 universal adapters with polarity switches. Is there a way to figure out polarity so I don't fry the multi- action x- mas musical figure?
    Afefe10's Avatar
    Afefe10 Posts: 5, Reputation: 1
    New Member
     
    #2

    Dec 18, 2013, 02:48 AM
    Polarity
    Are all 9V transformers the same polarity?
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
     
    #3

    Dec 18, 2013, 04:49 AM
    No.
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
     
    #4

    Dec 18, 2013, 04:49 AM
    Do you own a multi-meter?
    Afefe10's Avatar
    Afefe10 Posts: 5, Reputation: 1
    New Member
     
    #5

    Dec 18, 2013, 01:44 PM
    Quote Originally Posted by stanfortyman View Post
    Do you own a multi-meter?
    . Yes more then one,but need to relearn how to use. Thanks for your 9 V ans.
    Afefe10's Avatar
    Afefe10 Posts: 5, Reputation: 1
    New Member
     
    #6

    Dec 18, 2013, 02:45 PM
    Quote Originally Posted by stanfortyman View Post
    No.
    Thank you
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
    Uber Member
     
    #7

    Dec 18, 2013, 02:51 PM
    Most DC adapters have the polarity marked on them. As a rule, but not 100%, the center is positive.
    Afefe10's Avatar
    Afefe10 Posts: 5, Reputation: 1
    New Member
     
    #8

    Dec 18, 2013, 04:58 PM
    Quote Originally Posted by Afefe10 View Post
    Are all 9V transformers the same polarity?
    Thanking Stanfortyman & all others for ans.

Not your question? Ask your question View similar questions

 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Polarity [ 6 Answers ]

What kind of problems would occur if polarity changes? We have had two rooms go out (that are in orig section of house ) and part of another room (in newer addition). Happened before. An electrician came out, wasn't having any luck and he heard a small "pop" and it starting working again. Now, 4...

Polarity [ 5 Answers ]

In the bond Cl-Cl Exist Polarity I heard there is no Polarity in this bond why is that? Thanks

What is reversed polarity [ 1 Answers ]

What is reversed polarity

Reverse polarity [ 3 Answers ]

Hello, If someone can help me understand what is meant by reverse polarity in an outlet in my house? I'am selling my house and the inspector want an outlets reverse polarity fixed. Where do I start?:confused:

Reversed Polarity [ 1 Answers ]

Regarding reverse polarity, I have 5 outlets in a room all showing reversed. The top of the outlets are wired to the light switch(red wire) the bottoms are hot all the time(black wire). When I remove the red wire from the switch the polarity is fixed.. if I hook that wire back up they then reverse...


View more questions Search