Version 4 SHEET 1 1480 1204 WIRE 544 -192 272 -192 WIRE 640 -192 544 -192 WIRE 752 -192 640 -192 WIRE 544 -112 544 -192 WIRE 640 -112 640 -192 WIRE 272 -96 272 -192 WIRE 272 48 272 -32 WIRE 368 48 272 48 WIRE 432 48 368 48 WIRE 544 48 544 -32 WIRE 544 48 512 48 WIRE 640 48 640 -32 WIRE 640 48 544 48 WIRE -176 96 -256 96 WIRE -32 96 -96 96 WIRE 64 96 -32 96 WIRE 192 96 64 96 WIRE -256 144 -256 96 WIRE 752 144 752 -192 WIRE -32 176 -32 96 WIRE 64 176 64 96 WIRE 272 192 272 48 WIRE 192 256 192 96 WIRE 224 256 192 256 WIRE -256 304 -256 224 WIRE -32 304 -32 256 WIRE 64 304 64 240 WIRE 272 304 272 256 WIRE 752 304 752 224 FLAG 752 304 0 FLAG -256 304 0 FLAG -32 304 0 FLAG 64 304 0 FLAG 272 304 0 FLAG 368 48 Load SYMBOL Misc\\SCR 256 192 R0 SYMATTR InstName U1 SYMATTR Value Thyristor SYMBOL voltage 752 128 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 WINDOW 3 32 96 Left 2 SYMATTR Value SINE(0 325 50) SYMATTR InstName V1 SYMBOL voltage -256 128 R0 WINDOW 0 24 96 Left 2 WINDOW 3 -28 255 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value PULSE(0 15V {alpha*10m/180} 0.1µ 0.1µ 200µ 20m) SYMBOL res -80 112 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R1 SYMATTR Value 100 SYMBOL res -16 272 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R2 SYMATTR Value 270 SYMBOL diode 48 240 M180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D1 SYMATTR Value ES1D SYMBOL diode 256 -32 M180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D2 SYMATTR Value Diode SYMATTR Prefix X SYMBOL res 528 -128 R0 SYMATTR InstName R3 SYMATTR Value 10 SYMBOL ind 624 -128 R0 SYMATTR InstName L1 SYMATTR Value 200mH SYMBOL res 528 32 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R4 SYMATTR Value 2 TEXT -288 672 Left 2 !.subckt Thyristor A G K\nQP h e a 0 POUT off\nQN e h m 0 NOUT off\nDR a e ZR\nDF h e ZF\nDGK h m ZGK\nRR a e 160k\nRF e h 240k\nRGK h m 10\nRG g h 3\nRK m k 3m\n.model POUT pnp (is=10p nf=1.2 bf=1 cje=200p tf=0.18µ tr=2µ)\n.model NOUT npn (is=10p nf=1.2 bf=100 rc=18m cjc=350p cje=800p tf=0.18µ tr=2µ)\n.model ZR d (is=10f n=1.2 ibv=5µ bv=1200)\n.model ZF d (is=10f n=1.2 ibv=5µ bv=1200)\n.model ZGK d (is=10f n=1.2 ibv=5µ bv=6)\n.ends Thyristor TEXT -288 480 Left 2 !.subckt Diode A K\nD A K ZD\nR A K 1200k\n.model ZD d (is=10p n=1.05 rs=6m bv=1200 ibv=5µ cjo=300p tt=500n)\n.ends Diode TEXT -256 -256 Left 2 !.tran 0 1 0.9 TEXT 384 384 Left 2 !.step param alpha list 45 90 135