guyz help..

Discussion in 'General Electronics Chat' started by markparaiso, Mar 9, 2009.

  1. markparaiso

    Thread Starter New Member

    Mar 7, 2009
    what if i have a 5-48V Dc supply (consider that it was varying from 5-48V).. and then i want to have an output of steady 12V Dc.. what will i do? do i need a voltage regulator? what value? and do i need a capacitor coupled in input and output? what value? and 2 resistors connected to adjust terminal of VR? what value? plz help me.. ty..
  2. thatoneguy


    Feb 19, 2009
    How fast does the voltage vary between 5V and 48V?

    A voltage regulator is required, with the information available, you would need a buck/boost switching regulator to keep a 12VDC output (assuming slow change), but without details on current availability and reqirement at 12V, there are too many variables.
  3. markparaiso

    Thread Starter New Member

    Mar 7, 2009
    actually our input is from 24V DC motor.. driven by a turnstile by about 800rpm.. as we measure the voltage output of the motor.. it ranges by about maximum of 48V.. how will we do to charge it in a 12V DC battery of a motorcycle.. if the required voltage of the battery charger is steady 12V..
  4. thingmaker3

    Retired Moderator

    May 16, 2005