about rectifiers ( Need Help )

Discussion in 'General Electronics Chat' started by madness_22, Apr 1, 2004.

  1. madness_22

    Thread Starter New Member

    Apr 1, 2004
    2
    0
    hi all ,,, i need help please ,, it may be a silly Q but i am countin on u to help me
    the Q is
    Why in full wave rectifiers using a function genrator instead of a low voltage center taped transformer will not work ?
     
  2. mozikluv

    AAC Fanatic!

    Jan 22, 2004
    1,437
    1
    :) hi,

    how did you come into conclusion that it did not work :)
     
  3. madness_22

    Thread Starter New Member

    Apr 1, 2004
    2
    0
    well i tried it ,, in out labs at the university it just dont work when we are using function generators :huh:
     
  4. bipin

    Well-Known Member

    Mar 21, 2004
    80
    0
    hi
    if you give any ac wave to a rectifier in theory it works, the problems that you would have faced could be because of any of these reasons,
    1- the input voltage that you would have given might be less than 1.4 volt which is lesser than the knee voltage of two silicon diodes. give 5v or above and try.
    2-you would have placed a load resistor of a very small resistance which pulls down the out put voltage. use 10k resistor and 100μF filter capacitor.
    3 or your function generators out put impedence must be very high. in this case try some other fucntion generator
    luv
    bipin
    India
     
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