Questions tagged [ltspice]
Anything related to LTspice. LTspice is a SPICE simulation, schematic capture, and waveform viewer program from Linear Technology. LTspice is freeware with a very liberal license, it is lightweight, and isn't crippled in any way.
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How to fix this LTspice error
Below is an H bridge inverter circuit model I came across in net:
I'm getting Singular matrix Iteration error when I try to run this.
If I delete the circuit on the right things work. Or if I ground ...
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Diode Circuit Analysis Conflicts
I am very confused about how to analyze diode circuits.
I have read sources that claim the voltage drop across the diode to be 0.5-0.7 V but this seems to be inconsistent with what happens when ...
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How to integrate a signal in LTSpice?
Is it possible to integrate a signal in LTSpice and plot the result?
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SPDT in LTspice
I'm currently new to using LTspice as a circuit simulation software.
Right now I'm trying to check if the IC (BD6221F-E2) that I included in the program is working. The process of making this IC is ...
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LTspice automation
I have a battery-powered boost converter and I'm attempting to measure the maximum input (battery) voltage droop under various load conditions of high current draws (different duty-cycles/...
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Problem with Bode diagram in LTspice
I am working on a buck converter and I want to obtain the Bode diagrams of the open-loop circuit. The below circuit is what I made. However, the DC-gain is -96 dB while it should be very small around -...
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How do you simulate voltage noise with LTSpice?
Is there a way to setup a voltage supply with voltage jitter/noise? I want to experiment with filtering out noise on various voltages etc. but not sure how to configure LTSpice to create a noisy ...
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LTspice: Vary a resistor's value over time
I want to simulate the load regulation of a power-supply. I'm sure I remember being able to vary the value of a resistor over the course of a simulation in LTspice, but I can't remember how. Anyone?
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What's the junk at the end of my FFT in LTSPICE?
Why do FFTs have junk on the high frequency end? Suppose I go to simulate this circuit in LTSPICE:
simulate this circuit – Schematic created using CircuitLab
Where the LTSPICE sine and ...
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Has LTspice been extended to support the modified-Chan, non-linear hysteretic model for coupled inductors (transformers)
I'd like to figure out how to simulate coupled, non-linear cores using the included modified Chan model in LTspice and I'm specifically interested to know if LTspice has ever been extended to support ...
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LTSpice capacitance dependend on voltage source
I am looking for a way to change the value of a capacitance dependent on the voltage source of the circuit.
How do I create a voltage dependent capacitor in LT spice?
Edit:
Two capacitances in a row ...
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How to model an inductor using a behavioural voltage source in LTspice (to get time-dependent inductors)?
I am trying to make a time-dependent inductor in LTspice, but it is not as easy as for resistors which allow values directly depending on 'time'. I tried using the characteristic equation of an ...
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LTSPICE - Changing parameters of a pulsed voltage source
At the moment I'm simulating a basic buck converter circuit and would like to be able to vary the duty cycle given to the circuit by a microcontroller (switching a MOSFET).
I'm simulating the micro ...
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LTSPICE - How to create PWM with rise time
A simple PWM circuit is simple to create using LTSPICE, such as:
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How to define the initial charge of a capacitor in SPICE
I would like to simulate a circuit with a capaciot in LTSPICE. In the first hand, I have tried to charge the capacitors in a period of time. However, the charging current is very high and I am not ...
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