HOW TO DISCHARGE ACCU WITH CONST CURRENT

Discussion in 'General Electronics Chat' started by the kid, Apr 4, 2016.

  1. the kid

    Thread Starter Member

    Jan 4, 2015
    57
    1
    Hello everyone
    I m studying a method of accu capacity measurement. but I have not a circuit that discharge the battery at const current. Everyone help me, please
    sorry for my english
     
  2. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    5,800
    1,104
    How much current?
    Do you need a circuit which will automatically stop when the battery voltage drops to some threshold value?
    Will the timing be automatic or done manually?
     
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  3. the kid

    Thread Starter Member

    Jan 4, 2015
    57
    1
    I need a automatic circuit. Could you help me. thank you verymuch
     
  4. hp1729

    Well-Known Member

    Nov 23, 2015
    1,954
    219
    So what kind of voltage and current are you talking about?
    You need a power transistor, a load resistor,a voltage comparator, and a reference voltage. Turn off the power transistor using the output of the comparator when the expected voltage level is reached.
    Something like this to start with?
    Or buy one already made? http://www.all-battery.com/TenergyI...22_a_7c01444&gclid=COHpopfM9csCFY9ffgodr4YKpg
     
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