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spice

  1. J

    Trouble with ADA2200 in Multisim

    I am trying to simulate ADA2200 in Multisim. The device is not readily available in Multisim library. So, I downloaded the SPICE netlist code for it from Analog Devices. I tried to make a component in Multisim using this code. But I am encountering an error (It was also commented in the code...
  2. sr13579

    How am I supposed to get a plot from this code on WeSpice(NGspice) engine?

    There is the code ’npn transistor vbias 3 0 dc 5v vs 1 0 dc 0v rb 1 2 20k rc 3 4 2k q 4 2 0 mynpn .model mynpn npn (BF=175 IS=1e-17 VA=75 BR=2) .dc vs 0 5 0.5 .plot dc v(3) -i(vbias) .end ’ But the output is showing a negative going down. How to get the graph of the plot with this app called...
  3. sr13579

    Help me understand what is happening with my NGSPICE coding..

    The thing is, I am confused with rawfile and .print card (spice.out file). There are like 3 options for rawfile generation: NONE,COMPACT and ACCURATE. While I am using NONE with the .print card the result is going inside a .out file without generating a rawfile. But when I am using ACCURATE or...
  4. sr13579

    Can't get a print of voltages between nodes from this SPICE (NGSPICE) simulator.

    The code is here, Diode Voltage Drop r1 1 2 10k r2 2 3 5k r3 3 4 4k r4 4 0 3k vin 1 0 dc 10 .print dc v(3,2) .end As you can see I am trying to get a voltage drop between node 3 aand 2. But the print function is not working properly. It is just showing the usual outputs of( the ouput is...
  5. A

    CMOS Inverter Simulation using SPICE

    Once i build the inverter circuit and simulate using SPICE tool, i can plot the I-V characteristic...Is there any possibility to change the built in drain current expression..[for eg :instead of Id= 0.5K(vgs-vth)^2 to Id=0.5K(vgs-vth)^3] ?
  6. I

    Frequency Response Heterojunction Bipolar Transistor

    I have a project, first i need to find a circuit to Analyse/study the Frequency Response of Heterojunction Bipolar Transistor. Then simulate that circuit on SPICE (i'am using Orcad Cadence). Can someone help me finding a circuit as mentioned above???, I'm having difficulties finding one. Any...
  7. V

    LM 2936 3.3

    looking a spice model for LM 2936 3.3 - any help appreciated

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