help me solve total resistance

Discussion in 'Homework Help' started by terrakota, May 20, 2005.

  1. terrakota

    Thread Starter Well-Known Member

    Feb 8, 2005
    67
    1
    hi,

    can u help me to solve the total resistance of this schematic?

    i think is 25k, but when i measure with multisim it givsme 13k

    thanks for any help
     
  2. David Bridgen

    Senior Member

    Feb 10, 2005
    278
    0
    The combination of R1, R2 and R4 is in parallel with R3. It follows that the combination of R1,2,3 and 4 is less than the value of R3.
     
  3. atferrari

    AAC Fanatic!

    Jan 6, 2004
    2,646
    759
    Hola Terrakota:

    "Thinking" with the sense of your posting makes no sense. Instead, you have three options:

    1 - Use any program (you did) to calculate for you.

    2 - Breadboard that (95 seconds if all resistors available) and measure.

    3 - Calculate it using delta-wye tyransforms. Simple to do even if at the begining it seems difficult.

    I used delta-wye once to solve the famous resistor cube. You could look here:

    http://cablemodem.fibertel.com.ar/atferrari/ in "Theory, design & calculations"

    ¡Buena suerte!

    Agustín Tomás
     
  4. terrakota

    Thread Starter Well-Known Member

    Feb 8, 2005
    67
    1
    gracias
     
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