Ltspice Definition and 56 Threads

  1. S

    Engineering LTspice iv Laplace circuit design help

    Homework Statement Find Io(t) for t>0 using Ltspice 4 Homework Equations n/a The Attempt at a Solution Here is what i have so far. I am unsure if i have the voltage source on the left correct or not. I am also stuck on how to use the current dependent current source from...
  2. E

    LTSpice IV simulation speed adjustments

    Hi everybody. how r u. i'm using linear technology's LTSpice IV to simulate my dc/dc switching power supplies. for that I'm using the chips from the same company. the problem is that when i simulate the circuit using LTSpice IV the simulation speed that it shows is only 25microsecond/s which...
  3. X

    Why Does LTspice Report Unknown Subcircuit for a 1N5231B Zener Diode?

    * C:\Documents and Settings\****(myusername)\Desktop\project\projectSimulation.asc Vin Vin N001 SINE(0 22.2 60) C1 Vc 0 100e-6 XDz 0 Vout 1N5231B RLIMIT Vc Vout 10 RLOAD Vout 0 500 D1 0 Vin 1n4004 D2 Vin Vc 1n4004 D3 N001 Vc 1n4004 D4 0 N001 1n4004 .lib C:\Program...
  4. X

    How Do You Add a New Diode Model in LTspice?

    EDIT: PROBLEM SOLVED! I found a model on a website of the manufacturer! Next, I need to hunt down this 5.1 V Zener. Hey. I'm designing a full-wave bridge rectifier regulated by a Zener, and on of the project requirements is an LTspice simulation(not to mention it's a good place to start before...
  5. K

    Using LTSPICE simulate CMOS function

    Homework Statement write the output F for different combinations of input using F= abc F= ((ab)’+c)’ Homework Equations The Attempt at a Solution I've tried and have drawn the schematic but I can't get correct output righ, I am using LTspice which is not very...
  6. Redbelly98

    LTSpice question, dependent sources.

    I use LTSpice, and vaguely remember there was a way to make a voltage (or current) source depend on either another source in the circuit, or to follow some function of time. I think it's either a source parameter, or a command line placed in the schematic. Does anybody know how to do this...
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