LTspice tutorial - Re-using standard component symbols

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In this video I look at a topic I should have known about a long time ago - how to use sub-circuit models with the standard symbols present in LTspice. This will remove the need to generate automatic symbols and it will make the schematic look much nicer.
Further reading: www.analog.com...
LTspice Tutorial series:
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
• LTspice tutorial - Wor...
EP14 - Digital circuits and logic gates • LTspice tutorial - Dig...
EP15- SMPS EMI and electrical noise and filters
• LTspice tutorial - SMP...
EP16- Feedback loop simulation
• LTspice tutorial - Fee...
Ep17 - Verifying Simulation Models
• LTspice tutorial - Sim...
Ep18 - Simulating Capacitors
• LTspice tutorial - Sim...
Ep 19 - Simulating Inductors
• LTspice tutorial - Sim...
EP 20 - Noise simulations
• LTspice tutorial - Noi...
Ep21 - Models and Libraries
• LTspice Tutorial - Cre...
Ep22- Voltage and current limited source
• LTspice Tutorial - Vol...
Ep23- Measuring Power Factor
• LTspice tutorial - Mea...
Ep24 - Modeling a vacuum tube triode
• LTspice tutorial - Mod...
Ep25- Using standard symbols
• LTspice tutorial - Re-...
Special Thanks to all my supporters on Patreon! Especially @afiskon and Ralf B.!
If you liked this video be sure to check out my other videos and you can also subscribe to be up to date with all the new ones!
If you want to support the creation of more and better videos please consider checking out: / feszelectronics

Опубликовано:

1 окт 2024

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Комментарии : 21

@juliosaldana8346 6 месяцев назад

Thank you for the video. How about make the internal parameters names of a subcircuit to appear in the symbol properties?

@KamleshGadhvana 3 года назад

this one was much needed, i get confused many times adding subckts thank you

@abdelazeemhassan3701 7 месяцев назад

Amazing as usual, thanks for sharing

@monkshoodtv 3 года назад

This has saved an awful lot of my remaining hair.

@alifeleparanj3688 3 года назад

Your channel is the only one that I have activated its notification bell since I've joined youtube (about 8 years) Good Job man

@FesZElectronics 3 года назад

Thank you for your support! I'm happy you are enjoying my content!

@willhelmx8388 3 года назад

Hi and thank you for a very good content - one thing that would be nice to see is how to create a new model based on a schematic if possible? If you build lets say a standard rc filter with input R/C 1 Output midpoint, RC2 output = a 3 terminal filter, can you make this as a symbol/model that one can use from the library? /A

@philippeversailles2170 3 года назад

Thanks a lot for this video. This is very clear and very useful. Will make my life easier with LTSPICE !

@BB-iq4su 6 месяцев назад

Thank you!

@하민성-o6h Год назад

thank you so much for the video! I was look for a tutorial just like this.

@misterthekaitheman 3 года назад

Is it also possible to assign a subcircuit to an existing symbol, but have the subckt text in a seperate file? So as to not have the text inside the schematic

@FesZElectronics 3 года назад

Of course. You need a .lib or .inc statement with the file path - for example " .inc C:\file.txt "

@MJ-vt1kp 3 года назад

As always very good LTspice tutorial. Keep creating.

@FesZElectronics 3 года назад

I'm happy you enjoyed it! Thank you!

@NishantjonyJaiswal 3 года назад

How can we simulate finfet transistor 32, 16 or 7 nm?

@kclu8512 11 месяцев назад

You need have foundry model ( node32 16 7 ) and MAKE sure your circuit simulator ( LTspice )could support them .

@thezodiace7399 3 года назад

Thank you for the video. What is the difference between a subcircuit and a model when talking about a single component?

@FesZElectronics 3 года назад

Well, if you are taking about a basic component - say a BJT, defined according to LTspice convention (ex: " .model 2N3906 PNP(IS=1E-14 VAF=100 [...])" ) - its a model; if on the other hand you have a BJT built from multiple basic components (ex: .SUBCKT BC817_nxp 1 2 3 Q1 1 2 3 Transistor 0.9457 Q2 11 2 3 Transistor 0.05425 RQ 1 11 200 D1 2 1 Diode) to more accurately define its behavior, its a subckt. When you find a simulation model, on the line where the component name is defined, it will either start with ".subckt" or ".model";

@thezodiace7399 3 года назад

@@FesZElectronics Thank you for your reply. What I would like to understand why there are two definitions of a BJT model for example? does define a model as a SUBCKT improves the precision of the model? and if I find both which one should I use?

@FesZElectronics 3 года назад

Any mathematical model will mimic reality only in a partial way, certain behaviors will not be modeled, or will be represented slightly inaccurately . The model for a transistor is no exception. If you want the best precision in simulating a circuit, a subckt will usually be better but take longer to simulate.

@thezodiace7399 3 года назад

@@FesZElectronics Thank you.