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Recharge circuit

Discussion in 'General Electronics Discussion' started by mostafa14, May 29, 2013.

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  1. mostafa14

    mostafa14

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    May 29, 2013
    [​IMG]

    Thank you..
     
    Last edited: May 29, 2013
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,496
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    Jan 21, 2010
    The box marked [?] is a lithium ion charger.

    Of course, a 5V supply will have a hard time charging a 7.4V battery.

    An almost acceptable option is a current limited voltage regulated source. In this case 8.4V and the appropriate current (0.5C is usually OK).

    And especially note -- current limited, not rated current!
     
  3. mostafa14

    mostafa14

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    May 29, 2013
    Thank you steve .

    but what is the different between current limited and rated current!

    and if you have a circuit diagram please share.

    Thank you.
     
  4. mostafa14

    mostafa14

    3
    0
    May 29, 2013
    [​IMG]
     
  5. davenn

    davenn Moderator

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    Sep 5, 2009
    Current limited = a power supply that cannot put out more current than what it is limited to

    Rated current = the amount of current a device will need to run correctly

    so for example with some rechargable batteries, you may need a current limited power supply so that the rated charging current of the batteries is never exceeded


    so you can see 2 very different thing :)

    Dave
     
    Last edited: May 29, 2013
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