Version 4
SHEET 1 2640 1724
WIRE 1232 -160 240 -160
WIRE 1264 -160 1232 -160
WIRE 1376 -160 1344 -160
WIRE 1456 -160 1376 -160
WIRE 480 -96 368 -96
WIRE 624 -96 544 -96
WIRE 672 -96 624 -96
WIRE 800 -96 752 -96
WIRE 864 -96 800 -96
WIRE 1104 -96 928 -96
WIRE 240 -64 240 -160
WIRE 368 -64 368 -96
WIRE 1104 -64 1104 -96
WIRE 1232 -64 1232 -160
WIRE 1456 -48 1456 -160
WIRE 288 80 288 48
WIRE 304 80 288 80
WIRE 320 80 320 48
WIRE 320 80 304 80
WIRE 1152 80 1152 48
WIRE 1168 80 1152 80
WIRE 1184 80 1184 48
WIRE 1184 80 1168 80
WIRE 160 112 160 48
WIRE 480 112 160 112
WIRE 800 112 800 -96
WIRE 800 112 544 112
WIRE 624 144 624 -96
WIRE 864 144 624 144
WIRE 1312 144 1312 48
WIRE 1312 144 928 144
WIRE 448 192 448 48
WIRE 1376 192 1376 -160
WIRE 1376 192 704 192
WIRE 1456 192 1456 32
WIRE 1024 208 1024 48
WIRE 304 304 304 80
WIRE 448 304 304 304
WIRE 704 304 704 192
WIRE 704 304 528 304
WIRE 944 304 704 304
WIRE 1168 304 1168 80
WIRE 1168 304 1024 304
WIRE 304 416 304 304
WIRE 656 416 304 416
WIRE 1168 416 1168 304
WIRE 1168 416 736 416
FLAG 1456 192 0
FLAG 448 192 0
FLAG 1024 208 0
SYMBOL Misc\\signal 1456 -64 M0
WINDOW 3 -24 7 Right 0
WINDOW 123 0 0 Left 0
WINDOW 39 1 134 Left 0
WINDOW 0 1 106 Left 0
SYMATTR Value PULSE({-up} {up} 0 1u 1u 14u 30u)
SYMATTR InstName V1
SYMBOL trafo1-2 224 -16 M90
SYMATTR Value Bs=0.4 Br=0.39 Hc=25.7 A=0.0000123 lm=0.035 lg=0 n1={n1} Rser1=10m n2={n2} Rser2=10m n3={n3} Rser3=10m
SYMATTR InstName U1
SYMBOL trafo1-2 1248 -16 R90
SYMATTR Value Bs=0.4 Br=0.39 Hc=25.7 A=0.0000123 lm=0.035 lg=0 n1={n1} Rser1=10m n2={n2} Rser2=10m n3={n3} Rser3=10m
SYMATTR InstName U2
SYMBOL diode 480 -80 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName D1
SYMBOL diode 928 -112 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName D2
SYMBOL Misc\\EuropeanResistor 768 -112 R90
WINDOW 0 26 56 VBottom 0
WINDOW 3 27 56 VTop 0
SYMATTR InstName R1
SYMATTR Value 4
SYMBOL diode 544 96 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName D3
SYMBOL diode 864 160 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName D4
SYMBOL Misc\\EuropeanResistor 544 288 R90
WINDOW 0 28 58 VBottom 0
WINDOW 3 27 56 VTop 0
SYMATTR InstName R2
SYMATTR Value 270
SYMBOL Misc\\EuropeanResistor 1040 288 R90
WINDOW 0 36 51 VBottom 0
WINDOW 3 27 56 VTop 0
SYMATTR InstName R3
SYMATTR Value 270
SYMBOL current 736 416 R90
WINDOW 0 -32 40 VBottom 0
WINDOW 3 32 40 VTop 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName I1
SYMATTR Value PULSE(-25m 25m 0 3m 3m 0 6m)
SYMBOL Misc\\EuropeanResistor 1360 -176 R90
WINDOW 0 26 56 VBottom 0
WINDOW 3 27 56 VTop 0
SYMATTR InstName R4
SYMATTR Value 1
TEXT 1256 288 Left 0 !.tran 0 10m 0 50n
TEXT -112 -184 Left 0 !.param n1=30 n2=15 n3=15; Ferroxcube TN14/9/5-3R1\n.param  up=20