How to make model for toroidal transformer and associate it to a symbol

Hi DarioLobos ,

I can't help you with evaluating your solution, or the Bordonynov library for that matter, but I might be able to help you create a symbol.

mike

Yes. Many thanks The only way simple that found to improve efficiency is a very big capacitor. I am trying to check with doing something in the primary because current is always the same with any load. Two mosfet is a complicated circuit to a small transformer so. I was thinking to use a triak and cut peaks like a dimmer of a lamp across an optocpuple. I tried to use .model CSW to simulate a triac but didn't work. So the help of put a correct model in a simbol is very welcome, specially the triac.

Mnay thanks.again.

This are the circuits and simulations. last one is the one with the triac that I want to simulate.

This is the circuit with an autotransformer. both need to regulate current in primary or add a resistor for the usage in the primary so i will need to check the triac.with an autotransformer, non isolated circuit, can easy use mosfet instead of a triac. 

Thanks I seen a video that teach me how to set up the model library for a triac :

https://youtu.be/lRz1gql-BWw?si=yfZKDRROmHYxjCml

and I could simulate my circuit and this step is finished the power supply vary form 15 watts in low load and 90 watts at 2 amps 12 volts load,  Attached is the simulation that shows power averages,

Then I need to do 5 volts from this 12 and 3.1 volts for that i will use an auto transformer and a modulator that I designed with an NE555 the circuits are atttached I just to set up proper resistors for the needed voltages. The 555 supply signal for the coil and sense it after it.