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regulated power supply

Discussion in 'Electronic Design' started by sunny, Jul 5, 2006.

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  1. sunny

    sunny Guest

    I'm using Pspice to design a regulated power supply and I'm getting the
    following error when I run my simulation:

    ERROR -- Subcircuit TX used by X_TX1 is undefined

    does anyone no what causes this type of error. I'm using a transformer
    from a library called SEDRA_lib which is part of Microelectronics
    textbook In my schematic TX1 is the
    transformer. I have been able to build this circuit using individual
    inductors for primary and secondary plus using the K_linear part,
    however, I would prefer to use the sedra/smith library part if

    My circuit consist of the following: VSIN - R1 (.5ohm) - primary
    windings all in series - GND

    Secondary side of transformer:

    Ls1 - D1 - C1 - R2 - Zener - Rload - GND
    Center tap - node w/C1 -zener- R3 -R4 - GND
    Ls2 - D2 - node w/D1 -C1

    I would appreciate any assistance
  2. Jim Thompson

    Jim Thompson Guest

    To use the Sedra Smith Library part, the part *graphics* must be in a
    declared *symbol* library.

    The part *subcircuit definition* must be in a declared *device*

    ...Jim Thompson
  3. sunny

    sunny Guest

    Thanks for the quick response. Just one follow up question these
    additional part you mention like graphics, symbol etc. Where are they

  4. Jim Thompson

    Jim Thompson Guest

    If you're using Capture, you're on your own. I use PSpice Schematics,
    where there's an "Edit Symbol" in the toolbar.

    ...Jim Thompson
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