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12V adapter and 12V 7Ah smf battery setup

Discussion in 'Power Electronics' started by deepakgupta.rf, Aug 14, 2011.

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  1. deepakgupta.rf

    deepakgupta.rf

    2
    0
    Aug 14, 2011
    here i need this design for industrial purpose please guide me.
    i controlled my avr microcontroller and it is working fine for its power supply i used 12 v 1 amp dc adapter and in mid we required power in absense of genral power supply so i used 12 v 7ah smf lead acid battery .
    but i m confused is that diagram will work fine.or i need any changes
    and regarding fuse i m also confused which fuse ( 1, 1.5 or 2 amp ) ishud use and where i shud place

    main thing is when power is continue then i can take power from adapter directoly or if power goes then without any power flicks ican take power from battery and battery can be charged properly through adapter.
    so please guide me what i shud do for this
     
  2. alfa88

    alfa88

    344
    5
    Dec 1, 2010
    Failsafe Power

    For a fuse I'd pick a 1.5 amp. The failsafe block diagram is what is used in a transit control system. Failsafe.jpg
     
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