ltspice

I am simulating a synchronous buck converter based on the LTC3703 in LTspice and I want to accurately measure the input power in steady-state. The input current drawn from the source is highly pulsed and includes large switching spikes , so instantaneous waveforms are not very intuitive. Thank you

Hello, I assembled a circuit that is a crossed-out circuit using MOSFETs where I'm working with oscillators with an order of phantom capacitance and an inductor with nano, and I left these values fixed without using .step param in LT Spice. I used the `.step param` method on W to see the...

Hi, Maybe this is a silly question but I didn't find the answer on the forum... I simulate an oscilator with LTSpice. The FFT simulation gives me a curve, but I would like to know if I can get a clear table with the resonance frequency, the noise... without guessing with cursor position on the...

How can I add components like 74LS47, 74LS90 etc to LTSpice to simulate a circuit schematic I have done in KiCad?

Hi people, Im trying to simulate this nMosfet on LTspice. Am pretty new to this LTSpice but trying to learn bit of pieces here and there. This is where I'm stuck. I've calculated the basic parameters from the nMosfet Im interested in (Vth, Kp, Cgs and the rest). The Vth is approx 0.94-0.99V...

Hi, Im trying to draw some schematic in LTSpice (not simulating) and would like to know which is the best library for the standard components. For example i have a default library currently, which is not so efficient. For example, I could not find proper symbol for IGBT/Relay/current sensors...

This circuit is supposed to divide clk signal by 3. However, when I try to simulate I get this issue: Analysis: Time step too small; time = 1e-07, timestep = 1.2207e-19: trouble with dflop-instance a5 I've tried changing pulse parameters but nothing seems to work

Hi everyone, I'm trying to implement this active low-pass filter using a TL072CP. I have simulated it in LTspice, and its behavior is pretty much what I expected. However, when I assemble it on the breadboard and analyze its Bode plot, it appears more like a high-pass filter with poor gain...

I’m a beginner in circuit simulation and I’m trying to simulate a FitzHugh-Nagumo circuit that incorporates a piezoelectric bimembrane as a nonlinear resistor in LTspice or Proteus. My goal is to calculate the initial parameters values like x1 and x2 by running the circuit in simulation...

Hello, I am following the schematic on this site. I am simulating the circuit with zero success. Is the jfet I am using suitable for this amp? Have I done something wrong?

Oii, alguém tem o modelo LTSpice preciso para TIP122? Desde já, agradeço!

Hello, I have been given a cicuit which I modeled in LTspice. The assignment is to modify the simulation deck so that the currents passing through an R2 and R3 show the natural and forced responses' graphs seperately. I have tried this by dividing it into two circuits: One with the sinusoidal...

Im currently working on a project for my course (power electronics). No one in my class knows what we are supposed to do. I could just use some direction, thank you this is what I've got so far. When I check the voltage across the resistor, it looks like this.

I am not supposed to change the components in the box here. So, to find Thevenin resistance, I added in a 1A current source and figured Voc would be equal to Rt. But Voc keeps coming up as 15, and I checked that no other hidden impedances exist, so why is it coming up like this?

I'm designing a simple amplifier for educational purposes. Please ignore that this amplifier is very sensitive to changes in the transistor's DC current gain. I calculated some component values, then simulated the circuit and realized my calculations were way off. Could you help me identify...

I am trying to simulate a circuit from an exercise. I am confident that I have calculated everything correctly, but unfortunately, the simulation does not match the calculation. The amplification in the upper half of the waveform is weaker than in the lower half. I suspect that the cause of this...

Hi, I’d like to compute the efficiency of attached circuit for V2 range 20-300V. Can you please check if the formulas are correct? Results:

In attached circuit I expect the FET to be biased fully on, with RDSON = 6 ohms. Current through the loop is 10V/(100 + 6 ohms) = 94mA. Drop across M1 should be 566mV. Drop across R1 should be 9.43V. V1 Rser = 0, so no drop there. I tried several other FET models but I am seeing similar...

Hello there, I've been try to learn how sigma-delta ADC works, I've been through the block diagram mostly and tried simulating one myself by following this video lecture from "The signal path" channel, the wiring is right as it shows in the circuit diagram( from timeframe 34:30 ) and it also...

Hello, I'm new to ltspice. How can I add a varistor to the memristor moderation so that the current-voltage characteristic is nonlinear? I am attaching the files.