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Stepping down voltage from a battery

Discussion in 'Power Electronics' started by Mindcrime13, Jan 6, 2010.

  1. Mindcrime13

    Mindcrime13

    8
    0
    Jan 6, 2010
    Im working on an airsoft replica and the issue im having is that the battery i have is way to powerfull but is the only battery that fits my replica propperly. The battery is lipo 11.1 volts, 1600mah, 20C i need to take the voltage down to at least 8 volts, i know that there is a formula to find what resistor i can use to step down the voltage but i really dont know, so any input , help is appreciated
     
  2. dmclambjr

    dmclambjr

    3
    0
    Jan 9, 2010
  3. Razorback64

    Razorback64

    2
    0
    Aug 13, 2010
    Depending on the application, the industry uses one of the following three methods, listed below in the order of increasing power level:

    1) A charge pump: lets the potential energy built up in a row of parallel capacitors then switches to connect the capacitors in series to add up the voltage.

    2) A boost converter: lets the kinetic energy built up in an inductor then switches to discharge that energy to a capacitor to pump up the capacitor voltage.

    3) A transformer: oscillates the DC to an AC, runs the AC through a step up transformer, then rectifies the secondary AC back to a DC.




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    Last edited: Aug 16, 2010
  4. barathbushan

    barathbushan

    223
    0
    Sep 26, 2009
    you cant use a resistor to drop voltage unless you know that the load current is constant !!
    if the load demands more current then there will be a greater drop at the resistor , and this prevents the load from getting the required voltage
     
  5. barathbushan

    barathbushan

    223
    0
    Sep 26, 2009

    there is no such thing as a transformer oscillator !!!
    if you run dc through a transformer , there is no change in flux , and hence Emf is not
    induced , IN SHORT NOTHING HAPPENS
     
  6. barathbushan

    barathbushan

    223
    0
    Sep 26, 2009
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