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Supercapacitor Based 5 minutes Fast USB Charger

Discussion in 'General Electronics Discussion' started by Kedar264, May 3, 2015.

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  1. Kedar264

    Kedar264

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    0
    May 3, 2015
    A 2.7 v 500 farad supercapacitor can be charged in 5 minutes, if provided with 3A charging current,after that charging cell phone for 30 to 50% battery level is possible.
    The next level is then to step up the voltage upto 5 volts with minimum 500 ma for usable applications
    To make use of supercapacitor at its best i found power management solutions ic from linear technology "LTC 3108 & LTC 3105", which can work with 20 mv input!!!
    Here's my video ,check out and let me know your better suggestions.

     
  2. KJ6EAD

    KJ6EAD

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    Aug 13, 2011
    It doesn't matter if you have a super capacitor, a plug-in charger or a direct connection to the sun; the most you can push through a micro USB connector is around 2A. At that rate, a typical smart phone could be charged in 20-30 minutes. That's about what I get with the "turbo" charger that came with my phone. To charge in 5 minutes would require 10A or more.
     
    Arouse1973, hevans1944 and davenn like this.
  3. BobK

    BobK

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    Jan 5, 2010
    Read the OP again, he is not talking about charging the phone in 5 minutes, he is talking about charging the supercap in 5 min.

    Bob
     
    davenn likes this.
  4. KJ6EAD

    KJ6EAD

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    Aug 13, 2011
    His post is titled "Supercapacitor Based 5 minutes Fast USB Charger" and his video is titled "How To Charge Your Phone in 5 Minutes…"

    What nuance of opposite meaning am I missing?
     
    Last edited: May 14, 2015
  5. davenn

    davenn Moderator

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    Sep 5, 2009

    granted his video etc say the opposite to his opening statement
    as usual poor OP wording causes lots of confusion :rolleyes:
     
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