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LTspice

Discussion in 'Circuit Simulation & PCB Design' started by XL-power, Jul 18, 2010.

  1. XL-power

    XL-power New Member

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    hi all,

    am new to LTspice, could anyone help me? how can i make my program to draw the dissipated power versus a variable resistor?

    (power versus resistor)
    my circuit is completed, just my problem is how can i make the program to do so?

    thanks in advance
     
  2. Sceadwian

    Sceadwian Banned

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    You started with a topic slightly more complex than it first appears. I've never seen a variable resistor properly modeled in LTspice. You can STEP a resistor value through a single simulation over a set of values but constant variability is not so easy.

    You don't need LTSpice to determine power over a resistor though, all you need to know is the voltage and use a calculator.
     
  3. MikeMl

    MikeMl Well-Known Member Most Helpful Member

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    First, this topic should be in This forum.


    Second, does this do what you want?

    Third, here is an alternate way to do it, where the resistor is a function of time.
     

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    Last edited: Jul 18, 2010
  4. dave

    Dave New Member

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  5. XL-power

    XL-power New Member

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    thanks for your reply, but i do , i need power versus resistor
    i use "MikeMl" method and it works
     
  6. XL-power

    XL-power New Member

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    thanks a lot "MikeMl" , i use the first one and it works
    sorry for posting here
     
  7. BrownOut

    BrownOut Banned

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    Don't be surry, dude. That's what the forum is for.
     

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