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  1. #1
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    Battery Level Indicator

    i am using lm3914 to make a battery level indicator , as the given in datasheet that we should not use current more that 1 amp. but i need to make a battery level indicator for 12v, 7.3 A battery any solutions to reduce current to 1 amp or any other solutions

    Please reply to me as soon as possible.

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  2. #2
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    Re: Battery Level Indicator

    Your post does not describe the problem fully.

    Assuming that 'level ' indicator is 'voltage' indicator
    te question about the 12v , 7,3A spec of the battery exceeding the lm3914 specification is not correct.
    3914 is a voltage sensor.
    load courrent of battery will not pass thro it.

    post your circuit .



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  3. #3
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    Re: Battery Level Indicator

    I built several led bargraph voltmeters around the 3914. None draws more than 50 or 100 mA.

    A few resistors are needed, including one that limits current through the led's. You must select a sufficiently high ohm value. An led should not be asked to carry more than 20 mA.



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  4. #4
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    Re: Battery Level Indicator




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