** ideal transformer models

** ideal transformer 1
.SUBCKT IT1 1 2 3 4 Np=1 Ns=1
* 1 in+
* 2 in-
* 3 out+
* 4 out-
E1 1 2 3 4 {+Np/Ns}
F1 3 4 E1  {-Np/Ns}
.ENDS IT1

** ideal transformer 2
.SUBCKT IT2 1 2 3 4 Np=1 Ns=1
* 1 in+
* 2 in-
* 3 out+
* 4 out-
F1 1 2 E1  {-Ns/Np}
E1 3 4 1 2 {+Ns/Np}
.ENDS IT2

** ideal transformer 3 - two output windings
.SUBCKT IT2WDG 1 2 3 4 5 6 Np=1 Ns1=1 Ns2=1
* 1 in+
* 2 in-
* 3 out1+
* 4 out1-
* 5 out2+
* 6 out2-
F1 3 4 E1  {-Np/Ns1}
E1 1 x 3 4 {+Np/Ns1}
F2 5 6 E2  {-Np/Ns2}
E2 y 2 5 6 {+Np/Ns2}
R1 x 2 1m
R2 1 y 1m
.ENDS IT2WDG

** coupled inductors
.SUBCKT CI p1 p2 s1 s2 N=1 L=1
L1 p1 p2 {L}
L2 s1 s2 {N*N*L}
K1 L1 L2 0.999
.ENDS CI