LTspice Using Transformers

Transformers and coupled inductors are key components in many switching regulator designs to include flyback, forward and SEPIC converters. They perform critical function in providing an isolation barrier, enabling high step-down or step-up ratios and accommodating multiple or inverting outputs. Although it is possible to make a dedicated subcircuit for a specific transformer, LTspice preferred method is to define a separate inductor for each transformer winding and then couple them all together magnetically via a single Mutual Inductance (K) statement. This video will provide an overview on how to define a transformer using inductors, specify the mutual inductance via a (K) statement and lastly show how to add multiple windings to a simulation

[@cashewmilkfan]

YOOO THAT INTRO MUSIC FUCKING SLAPS, GOOD STUFF

[@alan492]

Thank you, this video was very helpful.

[@Berk-lf6ge]

Thank you so much. You are a great teacher

[@qzorn4440]

nice ltspice transformers video... just starting to learn ltspice and this is the first inductor simulation video... thanks...:) interesting

[@qzorn4440]

this would make a great mag-amp sat-reactor model...

[@seshansesha7645]

Thank you

[@leejohnson197733]

i really need help with this program, i am trying to create a RLC circuit in parallel and create a resonance curve, i have no idea how to do this, any help would be fantastic

[@4DIOS_]

dzieki stary, mozemy kiedys pujsc na PIWO

[@zawilious]

In the first circuit, how there is no current limiting entering the transformer ? Wouldn't it be sucking a huge amount of current that way ?

[@misumi6312]

Sick vid, still no clue what Rser=.1 is or why it's needed

[@machotabit3556]

thats internal resistance

[@misumi6312]

@@machotabit3556 Yeah ended up figuring that out haha Thanks though

[@ayooavicado]

hmmm

[@sandymandytosh]

If I know the parameters of the transformer , how do I get the L1 and L2?

[@seanmcneill7241]

If you know the turns ratio (N1/N2) and if you know the inductance of either the primary or secondary, you can use the following relationship to get the other inductor value: (L1/L2) = (N1/N2)^2

[@arivnidunami3047]

How to make a 3 inductor transformer in LTSpice?

[@blockcamp]

K L1 L2 L3 1

[@charansri503]

@@blockcamp How to set turns ratio?

[@blockcamp]

@@charansri503 you gotta deal with inductance

[@josephnixon4814]

µ

[@optimusaprime6066]

but where optimus prime?

[@MrQjoo]

Thank you