8v charger to 5v

Discussion in 'General Electronics Chat' started by olowuharun, May 1, 2017.

how convert 8v charger to 5v to charge my phone

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  1. olowuharun

    Thread Starter New Member

    Apr 29, 2017
    2
    0
    convert 8v charger to 5v to charge my phone
     
  2. crutschow

    Expert

    Mar 14, 2008
    20,060
    5,651
    7805.
     
  3. dl324

    AAC Fanatic!

    Mar 30, 2015
    7,227
    1,674
    You need to drop 3 volts with a voltage regulator, diodes, etc.

    If it were me, I'd go to a second hand store and buy a 5V adapter for a couple dollars.
     
  4. Reloadron

    Distinguished Member

    Jan 15, 2015
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    1,632
    While a 7805 would do I would just buy a 5 volt charger which a version made for either 120 VAC or 12 VDC cost about $5.00 USD I wouldn't bother converting or building anything. Amazon has a wide variety including 120 VAC, 220 VAC and 12 VDC flavors all under $10.00 USD and many under $5.00 USD. Considering under five bucks and I see the things everywhere including used in thrift stores for a buck I would not bother making a 8 volt unit into a 5 volt unit. I guess if I did I would use a simple LM 7805 Regulator.

    Ron
     
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