Punkrider Posted May 29, 2006 Report Share Posted May 29, 2006 Morning all,I am trying to work out charging times for my RC car, but i need to know the mA that my charger produces.On the charger it says 11.6v = 200 mAI want know what 7.2v = ___ mA?I tried making it into 1v then multiplying it by 7.2, but the amount of mA decreased, it should increase.Help me Thanks in advance Quote Link to comment Share on other sites More sharing options...
Joe_Elding Posted May 29, 2006 Report Share Posted May 29, 2006 From what i can figure its inversely proportional. But im no electrician so im not sure.so basically it means that 11.6 = constant/200therefore constant = 11.6 * 200 = 2320therefore 7.2 = 2320/ x(Ma) (sub in the second bit with the constant value)7.2 * x = 2320x = 322.2Therfore 7.2V = 322 MAWell thats how we do it in maths so it may be wrong. Quote Link to comment Share on other sites More sharing options...
MasterOfGussets Posted May 29, 2006 Report Share Posted May 29, 2006 I = V/R...You know the voltage is 7.2V. But you need to know the resistence to calculate the Capacitance. Quote Link to comment Share on other sites More sharing options...
Punkrider Posted May 29, 2006 Author Report Share Posted May 29, 2006 322 sounds about right, boy geniusThanks Quote Link to comment Share on other sites More sharing options...
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