* source FLYBACK CONVERTER
D_D1         N12204 OUTPUT Dbreak 
X_TX1    N12112 N12284 0 N12204 SCHEMATIC1_TX1 
V_Vs         N12112 0 24
R_R         0 OUTPUT  5  
V_V2         CONTROL 0  
+PULSE 0 5 0 1n 1n {Duty/Freq} {1/Freq}
X_S1    CONTROL 0 N12284 0 SCHEMATIC1_S1 
C_C         0 OUTPUT  200u  
.PARAM  lm=500u duty=0.385 freq=40k n1overn2=3

.subckt SCHEMATIC1_TX1 1 2 3 4  
K_TX1         L1_TX1 L2_TX1 1
L1_TX1         1 2 {Lm}
L2_TX1         3 4 {Lm/(N1overN2*N1overN2)}
.ends SCHEMATIC1_TX1

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