Simulating a transformer

Why am I not getting an induced voltage across L2 in the attached sim ?

Because that's not a simulated transformer, that's a rudimentary mutual induction simulation. Transformer simulations are drastically more complex.

So close and yet so far.

Your problem is that the statement for mutual inductance above the two inductors is just a comment which the Spice simulation ignores. Click the Spice Directive option in the statement in place of the Comment option and the two inductors will work as a transformer.

An ideal transformer simulation is quite simple, Sceadwian. Don't know why you say it's "drastically more complex"?

Doh! Thanks Crutschow. I'm sure I made that mistake a while back, got round it, then promptly forgot all about the solution. The LTS (un)'Help' merely says the mutual inductance statement should be 'placed as text' !

Hi Carl,

He's probably thinking more towards the phenomenological magnetic models more than the behavioral ones.

alec_t said:

Doh! Thanks Crutschow. I'm sure I made that mistake a while back, got round it, then promptly forgot all about the solution. The LTS (un)'Help' merely says the mutual inductance statement should be 'placed as text' !

Click to expand...

Yes, that's a confusing Help statement about mutual inductance. If you look at Help about Transformers, it states that the text must be a Spice Directive.