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Recent content by caledonia

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    [SOLVED] Multiparameter Simulation in Pspice, alternatives

    Hi actually there is a parameter plotter too whitch enables it. You have to buy the licence separately:s
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    FFT algorithm in Pspice

    Hi Guys, I'm simulationg a circuit in Pspice and parallel trying to calculate it in Mathcad. I have tested the FFT in Pspice and the cfft in Mathcad and there is a difference in the amplitude, so the scaling. The one in Mathcad is scaling with 1/n I think. Can you tell me what expression...
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    [SOLVED] Multiparameter Simulation in Pspice, alternatives

    Hi LvW, no I didn't. I'll see what I Can find. Thanks!
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    [SOLVED] Multiparameter Simulation in Pspice, alternatives

    Hello everybody, I'm simulating a circuit in Pspice. I need to optimize 2 different parameters in the same time and alsolink others to them trough a mathematic expression. The parametric AC simulation permits only to change one parameter or other Elemet values if theres a mathematic...
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    MOSFET MODELL: Total Gate Charge effect

    Hello I would like to simulate a simple circuit with a current Mirror built with NMOS Transistors. To test the linearity of the circuit accuratly I would like to take also the variation of the Gate capacity with the Voltage, called the Total charge effect, into account. Have you any idea how...
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    current noise source Model in Pspice: Why dosn't it work?

    Hello, i found this Pspice Model of a current noise source. I integrated it in Pspice und wanted to simulate in a very simple Test circuit. It dosn't work. I always revceive this error message: FN0 is not defined with a little bar afterward that I don't know. The Noise source is supposed to...
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    [SOLVED] Shape of a linear Current pulse

    it's ok I calculated it through the pulse shape. thank you
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    [SOLVED] IPWL in Pspice: how does it work?

    Hello I'm trying to use the IPWL function of PSpice. I can't really get it. In the parameters of the source we find a list I1, I2,... but not where to write the times corresponding to these values. I saw also there is the possibility to use a text file, a .dat can you please explain in...
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    [SOLVED] Shape of a linear Current pulse

    Hello everybody, it is perhaps a silly question but I'm tired and can't really think now :) so: I need to determine the shape of a curent pulse. It is supposed to be given in the Simulation through an IPWL(piecewise linear) in Pspice. My pulse width is 50ns. The sensittivity is : 0,6 A/W...
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    Current Mirrors with a Ratio > 1:1

    Yes the first circuit I developped is built with a transimpedanceamplifier. I'm just looking for alternatives. I thought about the amplifying currentmirrors. But this solution is only worth it when the transistors are matched with only the ratio >1. Thank you!
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    Current Mirrors with a Ratio > 1:1

    Hello, could you please tell me if there are current mirrors in the market with a ratio more than 1:1? The matched transistors that I found are identical (1:1) or are destined for very hight currents. I need to amplify a photocurrent. I found the TL021 of TI, but they are not produced...

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