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[Solved] Calculating Coil Impedance Using Inductance (L), Q Factor, and Frequency (f)

Robson1989 22981 7
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  • #1 6342101
    Robson1989
    Level 11  
    Is it possible to calculate the coil impedance with only the following data:
    L coil inductance
    Q goodness
    f frequency
    ?
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  • #2 6342126
    Quarz
    Level 43  
    Robson1989 wrote:
    Is it possible to calculate the coil impedance with only the following data:
    L coil inductance
    Q goodness
    f frequency
    ?
    I will answer a question with a question; and what does the formula for the value of goodness look like? Q inductor (inductor) with inductance L. for a given frequency value f ? ? ?
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  • #4 6342176
    Quarz
    Level 43  
    Robson1989 wrote:
    Calculating Coil Impedance Using Inductance (L), Q Factor, and Frequency (f)
    ??
    What other parameter do you need? ? ?
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  • #5 6343817
    Robson1989
    Level 11  
    I have something like this:
    LS [?H] = 31.29 Q = 4104 f [kHz] = 1

    Formula for impedance:
    Z = j?L
    ? = 2 * Pi / T
    T = 1 / f
    T = 1 / 1000Hz = 0.001
    ? = 2 * 3.14 / 0.001 = 6280
    Z = j0,1965012 ???
    strange result, I put it in the wrong formula? Do I need R to calculate impedance?
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  • #6 6343954
    Quarz
    Level 43  
    Robson1989 wrote:
    I have something like this:
    LS [?H] = 31.29 Q = 4104 f [kHz] = 1

    Formula for impedance:
    Z = j?L
    But this is the pattern - on the right - on inductive reactance X L. coils;
    X L. = ? o L while each actual coil still has its own resistance R - see the formula you quoted on inducer goodness Q - so the formula for impedance FROM series connection of resistance and inductance it looks different ! ! !
    And how, then look for yourself ... :!: :idea: :cry: ... after all, you are asking about the basics Fundamentals of Electrical Engineering .

    Robson1989 wrote:
    ? = 2 * Pi / T
    T = 1 / f
    T = 1 / 1000Hz = 0.001
    ? = 2 * 3.14 / 0.001 = 6280
    Z = j0,1965012 ???
    strange result, I put it in the wrong formula? Do I need R to calculate impedance?
    Look up ...

    PS Any "otherwise helpful" please refrain from answering and not doing 'disservice' to the author of the topic.
    When he comes to this, he will remember it, and if he gets a "fried fish" instead of a "fishing rod", he will in a moment forget 'what it is eaten with' ... :idea: :D
  • #7 6344007
    Anonymous
    Anonymous  
  • #8 6344115
    Quarz
    Level 43  
    elektrit wrote:
    I'm afraid you have no choice, Quarz. You have to buy him the SAME book
    :lol: :lol:
    Calculating Coil Impedance Using Inductance (L), Q Factor, and Frequency (f)
    Greetings!
    Ps-further pages are more interesting for him. With patterns :)
    And I will not buy ... :!: :idea: :D ... I always have this 'book' with me ... :idea: :shocked!: :lol: ... and now guess where I am carrying said book ... :?: :idea: :D
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Topic summary

The discussion revolves around calculating coil impedance using given parameters: inductance (L), quality factor (Q), and frequency (f). Participants question the necessity of additional parameters, particularly resistance (R), for accurate impedance calculation. Various formulas are referenced, including the inductive reactance formula (X_L = ωL) and the relationship between frequency and period (T = 1/f). The conversation highlights the importance of understanding the fundamentals of electrical engineering to derive the correct impedance formula, which combines resistance and inductance in series.
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