What is LTspice used for?
LTspice® is Analog Devices’ high performance circuit simulation program, which allows you to draft, probe, and analyze the performance of your circuit design. LTspice contains an integrated schematic editor, waveform viewer, and advanced features that are easy to use once you learn some basic commands.
Is there a transformer in LTspice?
To add a transformer to your LTSpice/SwitcherCAD III model, simply draw two inductors and add a “K” statement to couple the inductors. Setting the turns ratio of the transformer is simply a matter of choosing the right inductor values. Remember, the inductance is proportional to the square of the turns ratio.
How do you measure LTspice?
To measure voltage across a component, click on the positive node to be measured, drag the mouse to the negative node and release the mouse. Measure current – To measure the current through a component, move the mouse cursor over the component and click.
How good is LTspice?
Very good and very detailed description of LTspice. It is a must have. I have used Pspice since 1990 and have developed countless models of various components. I have recently tried LTspice in more detail than just casually and discovered that it has a lot better simulation engine than Pspice.
How much does LTspice cost?
In this way, LTSpice on a Mac is the same as on Windows. However, the cost is $39 USD for a Crossover license.
What is K in LTspice?
Mutual Inductance is designated in a SPICE netlist by beginning the first word (label) of a new line with the letter “K”. It is unique among the basic circuit elements in LTspice in that a schematic symbol is not used to represented it.
What is RSER in LTspice?
This Rser allows LTspice IV to integrate the inductance as a Norton equivalent circuit instead of Thevenin equivalent in order to reduce the size of the circuit’s linearized matrix. If you don’t want LTspice to introduce this minimum resistance, you must explicitly set Rser=0 for that inductor.
What is spice directive?
In LTspice a SPICE Directive is text placed onto the schematic that passes directly into the netlist. It may be entered either as a single line or as a block of several lines of text. Since ENTER closes the text edit box, a new line must be started by typing either ctrl-ENTER or ctrl-M.
How do I display current LTspice?
8 Answers
- Place your voltage label, essentially anywhere.
- Right-click on the label.
- Now you can put whatever expression you want for the label, and the popup shows a list of valid nodes voltages and currents.
What is the best SPICE simulator?
LTSpice – is a widely popular SPICE simulator from Linear. LTspice is a free circuit simulation tool from Linear Technology corporation. This simulation software is considered as one of the best freeware available.
How to model a transformer in ltspice.com?
If simulation is desired, then a way to reduce time is to find manufacturers of transformers that already have spice models available. There have been a few tools I’ve seen that can take parameters and generate a spice model, but the physical nature of the transformer (such as wires size and turns ratio) need to be known.
Is the LTspice a model of a real magnetic device?
LTspice will faithfully model both ideal and real magnetic devices. However, caution is advised when first experimenting with unfamiliar concepts in inductors and transformers.
Is there a non linear model for Lt Spice?
LT spice does have a non linear model, but the problem is still relating it to physical parameters. The Jiles Atherton Model is useful for modeling these effects.
Why does LTspice start out with a DC current?
Without realizing it, many users may instruct LTspice to initialize the transformer magnetizing inductance with huge starting currents. Since they have used an ideal inductance that does not saturate (like a real transformer would), it starts out with dc current that may take many hundreds of line (or switching) cycles to die away.
