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Battery charger diagram

Discussion in 'Power Electronics' started by Frank999, Jul 5, 2015.

  1. Frank999

    Frank999

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    Jul 5, 2015
    I was changing the AC power cord and battery cables and after a week forgot how the wires were connected ( I know I should have made a diagram but I did not) I need help on how to connect some of the wires. See pictures. IMG_9159.JPG IMG_9160.JPG scan-150705-0001.jpg

    Any help would be appreciated.
     
  2. duke37

    duke37

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    Jan 9, 2011
    Firstly check what is the mains input (primary) of the transformer, make sure there is no connection to the output circuit (the heatsink).
    I do not see how the voltage switch works unless it is in the primery which is very unusual.

    The led will only pass a very small current, you must have a substantial wire to the output.

    I like the rug, did you make it?
     
    Arouse1973 likes this.
  3. Martaine2005

    Martaine2005

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    May 12, 2015
    [MOD] I'm editing this in place because it's important to realize what is definitely wrong.

    Hi Frank,
    I will have a guess to get this thread started!!
    This is by no means HOW to connect it but a GUESS.
    You should really use a multimeter to check polarity and voltages.
    I am assuming BLACK to be positive and WHITE as neutral.
    RED to battery as positive.

    Here goes my attempt to prompt some more members to pitch in.
    B6 to B1 for transformer AC input.
    B2 to RED battery cable (orange connector). For 12v and 6v selection.

    By elimination (B4 and B5 below) B2 cannot be a low voltage connection.

    W1, B3 and B4 neutral (negative) connections.

    B4 connects to a LED and the meter (which reads current), so it must be a low voltage connection.

    B5, I have no idea.

    B5 connects to the rectifier, so it must be the low voltage DC.

    I do notice that if B6 does indeed connect to B1, there is no fuse!.
    I also don't think that mains neutral would connect to battery negative. But I cannot see any other way.

    Please don't try this without checking connection voltages and polarity first.
    And wait for some other members input..

    Martin
     
    Last edited by a moderator: Jul 6, 2015
  4. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    W1 and B6 go to B1 (neutral) and B2 (active). I'm not certain which is neutral (black or white) in Canada.

    This presumes that the 12V/6V switch does not have heavy cables -- it looks like a power switch. Does it have a centre off position?

    The main load (the battery) should be connected across B4 and B5. If we assume that the LED comes on when the battery is connected correctly with the power not applied, then B4 connects to B3 and B5 to the red battery connection.
     
  5. Martaine2005

    Martaine2005

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    May 12, 2015
    Hi steve,
    wouldn't that be a straight short across ac input?

    Martin
     
  6. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    It would if that was all I wrote.

    Keep going until you get to a full stop. Then read the next sentence too. ;)
     
  7. Minder

    Minder

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    N.A. domestic supply 120v - 0(N) - 120v, = BLK - WHT - BLK.
    M.
     
  8. Martaine2005

    Martaine2005

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    May 12, 2015
    steve said
    [MOD] I'm editing this in place because it's important to realize what is definitely wrong.
    It would have been nice if you highlighted these points too!!
    I made it quite clear NOT to try it and it was a GUESS.
    I also stated "wait for other members input".

    I am not sure if getting older makes me more stupid or others getting older makes them more immature.

    Martin
     
  9. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    The post you removed wasn't argumentative, it told me why my post was difficult to understand.

    it should be read as "the knife and fork go on the left and right, I'm not sure which goes on the left in Canada.

    either W1 or B6 connect to B1, and the other goes to B2. Given that I am now told that black is active, then it is B6 which connected to B2, and W1 this connects to B1.

    I realize you said it was a guess, my notes were only put in place because we're talking about connecting mains wiring and I'd hate someone to make a bad mistake.

    I'm glad you chipped in with a response, and even this "disagreement" has helped to clarify things.

    And I think we're both just old and cantankerous :D
     
  10. Martaine2005

    Martaine2005

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    May 12, 2015
    Hi steve, thanks for the explanation. However, I did read it wrong and apologize.
    You were perfectly correct in your original response.
    I deleted my post because it was 'argumentative' and I apologize.
    Not only argumentative but wrong too. I should read properly.
    BUT, I got the thread started!!!
    Cheers

    Martin
     
  11. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    No problems.

    I wonder if @Frank999 is still about?
     
  12. Martaine2005

    Martaine2005

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    May 12, 2015
    He probably legged it after I replied.:eek:
     
  13. Tha fios agaibh

    Tha fios agaibh

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    Aug 11, 2014
    If a google search of a digram was not fruitful; Second thing I would do, is add a fuse block with a 2 or 3 amp fuse to incoming line 86 and land B2 on the load side. Looks like B2 changes primary taps for 6/12v option. Then, W1 white to B1(other side of primary). Then B5 to B3 (neg?) and B4(pos?) to battery +.
    I would disconnect the diode until I verified polarity and voltage checked out and figure it out from there.
     
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