A problem on transformer

Discussion in 'Homework Help' started by podgymax, Jan 29, 2009.

  1. podgymax

    Thread Starter Member

    Oct 19, 2008
    25
    0
    [​IMG]

    I've brought a transformer. It is 220 to 24. However, can I change it to 220-48 as it is 24-0-24. I would appreciate if anyone could help. thx
     
  2. podgymax

    Thread Starter Member

    Oct 19, 2008
    25
    0
    It is my original circuit.
    [​IMG]
     
  3. mellowmon

    Member

    Jan 24, 2009
    17
    0
    The Voltage output of your circuit would be 67 volts not 48 volts.:cool:
     
  4. podgymax

    Thread Starter Member

    Oct 19, 2008
    25
    0
    Why? I've bought a transformer that 220 to 24-0-24. After low pass filter, not that change to 24V?
     
  5. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    Yes, but 24V is the RMS voltage. The peak voltage of the transformer's secondary is Vrms*sqrt2=48*1.4142=68Vpeak.
    Thus the capacitor will charge up to the peak value with no load but the average voltage will drop when a load is applied.
     
Loading...