* source FORWARD CONVERTER
D_D1         SECONDARY VX Dbreak 
V_Vs         PRIMARY 0 100
R_R1         0 OUTPUT  10  
V_Vcontrol         CONTROL 0  
+PULSE 0 5 0 1n 1n {Duty/Freq} {1/Freq}
X_S1    CONTROL 0 SWITCH 0 SCHEMATIC1_S1 
L_L1         PRIMARY SWITCH  {Lm}  
L_Lx         VX OUTPUT  80u  
L_L2         SECONDARY 0  {Ls}  
C_C1         OUTPUT 0  20u IC=0 
L_L3         N13980 PRIMARY  {Lt}  
D_D2         0 VX Dbreak 
Kn_K1         L_L1 L_L2 
+ L_L3    .999
D_D3         0 N13980 Dbreak 
.PARAM  n1overn3=1 lm=1m lp=100m duty=0.3 freq=200k ls={lm/(n1overn2*n1overn2)}
+  lt={lm/(n1overn3*n1overn3)} n1overn2=2

.subckt SCHEMATIC1_S1 1 2 3 4  
S_S1         3 4 1 2 Sbreak
RS_S1         1 2 1G
.ends SCHEMATIC1_S1