Op amp with low output impedance

Discussion in 'General Electronics Chat' started by TimaV, Sep 22, 2014.

  1. TimaV

    Thread Starter New Member

    Sep 15, 2014
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    0
    How to use a transformer to make from a specific resistance to 50 ohm?
     
  2. kubeek

    AAC Fanatic!

    Sep 20, 2005
    4,851
    859
    what does a transformer have to do with opamp?
     
  3. MrCarlos

    Active Member

    Jan 2, 2010
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    135
    Hello TimaV

    You're looking for an OpAmp with an output impedance of 50 Ohms ??. . . Or Its input ??

    Or want to know how to use a transformer which has an impedance of 50 Ohms ?
     
  4. ErnieM

    AAC Fanatic!

    Apr 24, 2011
    7,906
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    Sorry we cannot understand that. Please restate your problem. Do use lots of words. Do not use abbreviations or undefined acronyms.
     
  5. wmodavis

    Well-Known Member

    Oct 23, 2010
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    Draw pictures if possible. Clear communication is imperative if you want helpful, accurate, useful answers.
     
  6. Ramussons

    Active Member

    May 3, 2013
    622
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    The transformation of impedence is "square of the turns ratio". If a transformer has a 1:2 turns ratio, the impedence "x" on the "1" side will be seen as "4x" on the "2" side.
     
  7. MrChips

    Moderator

    Oct 2, 2009
    14,282
    4,195
    There are opamps such as LM6181 designed to drive 50-ohm loads.
     
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