transformer in SwithcerCAD

Look in Help/FAQs/Transformer Model.

Here is a starter. You need to insert the appropriate values according to your particular transformer...

Version 4 SHEET 1 880 680 WIRE -160 224 -192 224 WIRE -160 304 -160 224 WIRE -160 480 -160 368 WIRE -112 224 -160 224 WIRE 32 224 -32 224 WIRE 32 240 32 224 WIRE 32 352 32 320 WIRE 112 224 32 224 WIRE 112 240 112 224 WIRE 112 352 32 352 WIRE 112 352 112 320 WIRE 112 368 112 352 WIRE 112 480 -160 480 WIRE 112 480 112 448 WIRE 112 528 112 480 WIRE 208 240 208 224 WIRE 208 368 208 320 WIRE 208 480 208 448 WIRE 208 528 208 480 WIRE 256 224 208 224 WIRE 384 224 336 224 WIRE 384 304 384 224 WIRE 384 480 208 480 WIRE 384 480 384 368 WIRE 432 224 384 224 SYMBOL ind2 96 224 R0 SYMATTR InstName Lp SYMATTR Value Lp SYMATTR Type ind SYMBOL ind2 192 224 R0 SYMATTR InstName Ls SYMATTR Value Ls SYMATTR Type ind SYMBOL ind -128 240 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 5 56 VBottom 0 SYMATTR InstName Llp SYMATTR Value Llp SYMBOL ind 240 240 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 5 56 VBottom 0 SYMATTR InstName Lls SYMATTR Value Lls SYMBOL res 96 352 R0 SYMATTR InstName Rp SYMATTR Value Rp SYMBOL res 192 352 R0 SYMATTR InstName Rs SYMATTR Value Rs SYMBOL cap 368 304 R0 SYMATTR InstName Cs SYMATTR Value Cs SYMBOL cap -176 304 R0 SYMATTR InstName Cp SYMATTR Value Cp SYMBOL res 16 224 R0 SYMATTR InstName Rc TEXT 104 144 Left 0 !K1 Lp Ls 1

Cheers, John

Hello Ira,

Look in the example files, there was at least one with a transformer. In SPICE transformer windings are represented as individual inductors with a coupling coefficient.