How to step up an AC voltage?

Discussion in 'General Electronics Chat' started by worldHello, Oct 22, 2014.

  1. worldHello

    Thread Starter New Member

    Oct 15, 2014
    23
    0
    I'm trying to step a 0.5 V AC to 5 VAC and 10 VAC. I used a transformer, but I got unpleasant results (A very unstable wave, and the voltage is even lower...)

    Any ideas on why this happened?
     
  2. MrChips

    Moderator

    Oct 2, 2009
    12,449
    3,365
    What is the nature of your 0.5VAC? Source, frequency, shape, current?
    What transformer did you use?
    How do you know the output wave was unstable? What is your meaning of unstable?
     
  3. BillB3857

    Senior Member

    Feb 28, 2009
    2,400
    348
    Where is the 0.5v coming from? My guess it is an impedance problem between the source an the transformer. What kind of load will the 5VACor 10VAC be driving? What frequency range are you dealing with... The devil is in the details.
     
  4. worldHello

    Thread Starter New Member

    Oct 15, 2014
    23
    0
    So far, the period of the source is about 2.9 ms . The load will simply be a resistor. I don't really know why, but I think a mosfet is needed for some reason.
     
  5. worldHello

    Thread Starter New Member

    Oct 15, 2014
    23
    0
    Also, the source of the 0.5VAC comes of a transformer
     
  6. MrChips

    Moderator

    Oct 2, 2009
    12,449
    3,365
    Sorry. We cannot see your setup where we are, at least not yet via the internet.

    Where is the signal to the transformer coming from?
    What is the make and model number of the transformer?
    What is the value of the load resistor?
     
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