normalized current

Discussion in 'Homework Help' started by swty_todd, Feb 16, 2009.

  1. swty_todd

    Thread Starter Active Member

    Aug 3, 2008
    82
    0
    in transmission lines i came across words such as mormalized current and normalized voltage...what do they mean..does it hav nething 2 do wid division??
     
  2. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    You choose some values as the base values, ie the maximum voltage and current ratings for the line. Also, you can find the base impedance by dividing Voltage (base) by Current (base). Any other values of voltage and current are expressed as a fraction of the base values.
     
  3. KL7AJ

    AAC Fanatic!

    Nov 4, 2008
    2,040
    287

    Greetings:

    When dealing with transmission lines, impedances are normalized with the Characteristic Impedance (Z0) of the transmission line. Smith Charts, for example, come in two versions, un-normalized with 1+j0 being at the origin, and with normalized versions being 50+j0 at the origin (or sometimes 75+j0)

    eric
     
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