LTspice tutorial - simulating Frequency Dependent component Parameters
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- Опубліковано 30 вер 2024
- #216 In this tutorial episode I look at how components can be modeled to have frequency dependent parameters. I first analyze the way in which the basic passive components - the resistor, capacitor and inductor can be modeled using G-sources with the Laplace function, and then I look at how the values can be made frequency dependent.
Further reading:
www.analog.com...
www.eeeguide.c...
www.coilcraft....
More LTspice tutorials:
EP1-Getting started:
• LTSpice Tutorial - EP1...
EP2-AC simulation and the Baxandall tone control circuit:
• LTspice tutorial - EP2...
EP3-.param and .step directives:
• LTspice tutorial - EP3...
EP4-How to import libraries and component models: • LTspice tutorial - EP4...
Ep5- Stock example simulations to play with: • LTspice tutorial - Ep5...
Ep6- Basics of FFT analysis and .four statment: • LTspice tutorial - Ep6...
EP7- Dependent voltage and current sources
• LTspice tutorial - Ep7...
Ep8- Turning a datasheet into a component model
• LTspice tutorial - Ep8...
EP9- Independent voltage and current sources
• LTspice tutorial - Ep9...
Ep10- .wave statement and audio file processing
• LTspice tutorial - Ep1...
Ep11 The effect of temperature on your circuit
• LTspice tutorial - The...
EP12 Modeling a DC brushed motor
• LTSpice Tutorial - Mod...
Ep13- Worst Case, Monte Carlo and Gaussian statistics circuit analysis
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EP14 - Digital circuits and logic gates • LTspice tutorial - Dig...
EP15- SMPS EMI and electrical noise and filters
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EP16- Feedback loop simulation
• LTspice tutorial - Fee...
Ep17 - Verifying Simulation Models
• LTspice tutorial - Sim...
Ep18 - Simulating Capacitors
• LTspice tutorial - Sim...
Ep 19 - Simulating Inductors
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EP 20 - Noise simulations
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Ep21 - Models and Libraries
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Ep22- Voltage and current limited source
• LTspice Tutorial - Vol...
Ep23- Measuring Power Factor
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Ep24 - Modeling a vacuum tube triode
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Ep25- Using standard symbols
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Ep26- Modeling transformers
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Ep27 - Stepping sets of parameters
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EP28 - Simulating Quartz crystals
• Measuring and Simulati...
Ep29 - Simulating gas discharge tubes
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Ep30 - LT tips and tricks
• Video
Ep31 - Modeling switches
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EP32 - FREQ function
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That's pretty neat!! Thank you FesZ!
Brilliant. I have an ongoing home radio project that would benefit by being able to simulate the real and imaginary parts of the relative permeability to give an idea of frequency roll off and frequency dependent thermal noise due to core losses (imaginary part of u) as a function of different ferrite types (Fair-Rite types 73, 43, 61, 67 etc). To date, I have always created spot models that are a bit contrived but do the job. While this method may have difficulties, this video and the Coilcraft work (I was not aware of this) give me some pointers. Cheers!
Hi FesZ Electronics: I am using the last version of LTspice and when i am simulating the basic inductor magnitud and phase is different from the equivalent circuit using laplace. Is this due to any wrong configuration of the inductor ?
You are doing the internet a service with these videos, honestly I feel like LTSpice or even SPICE is criminally undocumented on the internet. Where do you go to learn SPICE? On the topic of Laplace functions in current sources, I saw one used to simulate flicker noise, cool idea.
Please do a video on the new “FRA” tool in LTSPICE! Seems really important but there is not a lot of good info out there on how to use it
Congrats! Applause!
Wow! Respect! Never thought LTSpice could do that. Not by simply enter the laplace expression like that.
Hello Fesz, I am really fascinated by your work,
How ever I have a question : what is a constant current source, and why is it used as a load equivalent in a an electrical circuitry design ?
Thank you
Hello; The typical "load" would be a resistor but the downside is that the exact current draw is voltage dependent; with the current source, you can force a fixed current regardless of voltage. When using the current source as a load, its important to also tick the "this is an active load" box in the definition, otherwise the source will actually source current back into the circuit, not just draw it.
@@FesZElectronics
Oh thanks ! everything is clear now, your content is wayyy better than some course in college !
Thank you FesZ
nice