1. Younes Thabet

    How to import a third-party SPICE model in LTSpice that doesn't have a generic component!?

    Hello all, I don't know if i am supposed to ask this kinda questions in this thread but i am going to anyway! Tried importing a spice model for BAV70 (Dual-diode SOT23 package) after seeing some tutorials, all of them use a a generic component that represents the symbol of the SPICE model...
  2. M

    Simulation of a three phase voltage meter: MOV error (Analysis: Step time too small) LTSPICE

    Hi, I was hoping someone can help me to solve my error on LTspice. I am designing a three phase voltage sensor using voltage divider resitors and a isolated differential amplifier. The voltage range I need to measure is max 440V_rms. I want to add protection by adding a thermistor and MOVs. I...
  3. M

    LTspice - Take Voltage and Convert to PWM

    Hi, In LTspice, I have a voltage. I want to convert it to a PWM. This is only for LTspice - it doesn't have to be a something that can be realised. Tperiod is 10ms. So if the measured voltage is 2.3V, and my reference is 3.3V, then I want a PWM to have a duty of 69% (2.3V/3.3V). So Ton 6.9ms...
  4. Cyirxrc6vec

    Charging Li-ion circuit

    Hi, I made a circuit that charge Li-ion battery. When I simulated it, I found something strange; the time for charging was too short. I made it with 'LTspiceXVII' and here's my circuit's diagram and the graph, also I uploaded the 'Li-ion bat file'. So, would you like to help me if you don't...
  5. Sajid_Naseeb

    How do I simulate these two different Line Impedance Stabilization Network (LISN) models in LTspice?

    So, I found these models for Line Impedance Stabilization Network (LISN) in two different books. I want to simulate these two models in LTspice, but I don't know which side to connect the EUT and which side to connect the spectrum analyzer and ofcourse, where to connect the source? and how do I...
  6. Aivaras Andrijauskas

    LTspice - added diode models not listed.

    Standard.dio (diode models) (https://forum.allaboutcircuits.com/attachments/standard-txt.65504/) This is an updated version of the diode models file, which includes the 1N4001 diode, which is what i'm after. I replaced the file in /cmp with this one, but the program doesn't list any new diode...
  7. Mayank_2606

    Potentiometer in LTSPICE XVII

    I am trying to create a POT in ltspice xvii, even after following all the steps i am not able to get this to work. I created a schematic first for the pot, viz. pot.asc and then created a symbol for this file namely, pot.asy. I even named the attributes and added a spiceline that said R = 10k...
  8. robi10101298

    Simulation of implemented amplifier in LTSpice

    Hello, I need to simulate the following circuit in LTSpice. I made the scheme but I don't know what value to choose for R2 and Cinf in order to have theoretical gain Av=1500. The following constraints are imposed: Vcc=10v; VCM=1.5V; vg it's a sine wave with a frequency of 1Khz and R1=15kOhms. I...
  9. F

    LTspice simulation of RLC discharge circuit using voltage controlled switch

    Hi, I would like to simulate the discharge curve of an initially charged photoflash capacitor into a RL load as shown below (with component parasitics): A few things to note: 1. photoflash capacitor (C1) is initially charged to 360V 2. a voltage controlled switch represents a microcontroller...
  10. robi10101298

    Help with implementation of circuit in LTSpice

    Hello, I need to implement the following circuit in LTSpice but I don't know what VCM, Vg,VCC and C infinite are...Can you help me with the symbols for it? Also, the scheme implemented by me it's ok? Thanks!
  11. J

    LTspice Error: Undefined symbol in: "<<voltage>>" on mac.

    Hey y'all! Hope you're having a great day! I've spent an unnecessary amount of time trying to resolve this issue. I'm pretty new to LTspice and I wanna simply change the x-axis to show voltage instead of time, but it just doesn't seem to work (I'm running the program on mac). As you can see in...
  12. AksharGandhi05

    LTSpice simulation of a two-port network.

    Here's the question : "For the two port network given, obtain the Z-parameters, ABCD (transmission) parameters and h (hybrid) parameters. What should be the value of load resistance connected at Port-2 for maximum power transfer when a voltage source of 25V is connected at Port-1." (Picture...
  13. J

    LTSpice Simulation will not show the desired result

    Hello, I can't seem to see why the R7 resistor is not showing a current. I've redone the circuit three times and I'm still not getting any result. Is it something to do with the program? I've attached the LTspice file, the circuit diagram, and my simulation results. If anyone can help that...
  14. Luiz Fernando Vieira

    LTspice and Electric – (VLSI) - Simulation error

    I'm having trouble solving this problem with two software [LTspice and Electric - (VLSI)]. A simulation error occurs when I try to simulate. Code: C5_models.txt Source:http://cmosedu.com/videos/electric/electric_videos.htm
  15. D

    Pierce oscillator simulation on LTSpice

    Hello, I am trying to simulate a 32.768 kHz Pierce oscillator. I am referencing this particular crystal https://support.epson.biz/td/api/doc_check.php?dl=brief_FC-255&lang=en I believe my values are correct, however, the peak frequency of the FFT is almost only depended on the td value of the...
  16. S

    creating new component with cir files

    I have a low noise amplifier which has a HEMT as its transistor. (ATF38143). I have been trying to create a component in LT Spice and came across this website. The page linked here is a .cir file for ATF34143 and it was the closest HEMT I could find. I copied and pasted the script in a text...
  17. R

    Ltspice Hbridge DC-AC converter with GaN FET

    Hello, I'm working about a DC-AC converter with 400kHz switching frequency. I'm trying to simulate it in Ltspice using the model provided by the manufacturer of the transistor that is a GS66516B by gansystems ( https://gansystems.com/gan-transistors/gs66516b/ ). I want to evaluate power losses...
  18. R

    LTspice Simulation Question

    Hello All, Currently I've been doing some parametric sweeps with components and temperature. If I perform both a parametric sweep with a temperature sweep is there a way to extract or plot the data for one of the temperature points? For example lets say I perform a transient sweep while...
  19. K

    LM2940 (5V) LTSpice Model

    A Novice to LTSpice. I'm trying to get the LM2940 into my LTSpice but I don't know where to find it to download or how to import it into LTSpice. Please help and thank you.
  20. P

    LTSpice - using an encrypted ".mod" file for a MOSFET

    Hi folks, I wish to use a particular MOSFET in a schematic / simulation in LTSpice, and have found the manufacturers supply an encrypted ".mod" file for part I want: https://toshiba.semicon-storage.com/us/product/mosfet/detail.SSM3K361R.html I wonder if some one could tell me how to go about...
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