Homework help

Discussion in 'Homework Help' started by Tabs, Oct 29, 2008.

  1. Tabs

    Thread Starter New Member

    Oct 29, 2008
    1
    0
    :confused::confused:Hi there,could you please help me with the ollowing homework. I've tried to answer the questions but I'm not sure if what I did is right.

    The question says. Draw a 12 V full wave bridge rectier power supply circuit that will be able to filter the ripple by 2V and supply the load resistance of 2kΩ by the same output voltage. Assume the main frequency of 50HZ.
    - Draw Bloc diagram
    - Do calculations
    - And write operation.:confused:
     
  2. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    To a good approximation these equations work:

    Vr=Vdc/(2*f*R*C)

    Vdc=Vm/[1+1/(4*f*C*R)]

    where

    Vr=peak to peak ripple voltage
    f=supply frequency
    R=load resistance
    C=filter capacitor
    Vm=peak value of the rectified voltage
    Vdc=output DC voltage across the load

    Use them to find the appropriate values
     
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