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  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    17 years ago

    Hi,

    I am interested in using the ADA board to generate DC voltages from 0 to 3.3 Volts. I realize that I will need to remove the transformer to have DC operation.

    Additionally, I would likely need to do something so that the circuit can provide the relatively high voltage. I believe that the DAC chip on the board is limited to around 1.2 Volts.

    Can anybody suggest a simple way to achieve the high voltages that I need?

    Thanks,

    Hooter
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    17 years ago

    Can someone explain why there are two transformers in series on each ADC input? I understand that one is needed for level shifting, but why two?

    Thanks
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    17 years ago

    Obviously, they are intended to improve common mode rejection a higher frequencies.

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    17 years ago

    Yes, that makes sense, thanks. I'm not sure I can agree that it is obvious :).

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    17 years ago

    Agreed, but I think, it's the only plausible explanation. As the possibly more important question, I'm also not sure if it's necessary.