about impedance at 80M

Discussion in 'General Electronics Chat' started by szhighstar, Jul 9, 2012.

  1. szhighstar

    Thread Starter New Member

    Jun 26, 2012
    27
    5
    Hi friends, I am designing a common mode choke, EE5.0 core, impedance is 1200ohm MIN at 80M, L is 400uH MIN, I made many samples to test, however it is difficult to meet 1200ohm MIN at 80M, would you please give good suggestion! thanks in advance.
     
  2. wmodavis

    Well-Known Member

    Oct 23, 2010
    737
    150
    What is "M'?
     
  3. MrChips

    Moderator

    Oct 2, 2009
    12,449
    3,365
    I can only guess op means 80-meter or 3.75MHz.
     
  4. wmodavis

    Well-Known Member

    Oct 23, 2010
    737
    150
    "I can only guess"

    That is exactly why those who want specific help need to explain their problem as clearly as possible, with schematics, pictures and CORRECT USE OF STANDARD ABBREVIATIONS so that those who might offer help do not have to guess what they meant and go of on some sort of tangent

    M = mini, micro, mil, mega, meter, many, mine, monday ????
     
  5. szhighstar

    Thread Starter New Member

    Jun 26, 2012
    27
    5
    sorry, my friends, I did not say clear, 80M is 80MHz , need impedance 1200ohm MIN at 80MHz, thanks!
     
  6. MrChips

    Moderator

    Oct 2, 2009
    12,449
    3,365
    80MHz is a bit different from 3.75MHz. I guess I guessed wrong.
     
  7. K7GUH

    Member

    Jan 28, 2011
    191
    23
    No, you guessed right, given the context. He stated the problem clumsily.
     
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