Version 4 SHEET 1 880 960 WIRE -240 144 -320 144 WIRE -160 144 -240 144 WIRE 64 144 -160 144 WIRE 256 144 160 144 WIRE -240 160 -240 144 WIRE -160 160 -160 144 WIRE 256 160 256 144 WIRE -320 176 -320 144 WIRE 64 176 64 144 WIRE 160 176 160 144 WIRE -320 288 -320 256 WIRE -240 288 -240 240 WIRE -160 288 -160 224 WIRE -160 288 -240 288 WIRE -128 288 -160 288 WIRE -32 288 -48 288 WIRE 64 288 64 256 WIRE 64 288 32 288 WIRE 160 288 160 256 WIRE 240 288 160 288 WIRE 288 288 240 288 WIRE 368 288 352 288 WIRE 464 288 368 288 WIRE 368 320 368 288 WIRE 464 320 464 288 WIRE 64 336 64 288 WIRE -160 384 -320 384 WIRE -144 384 -160 384 WIRE -32 384 -80 384 WIRE 64 384 64 336 WIRE -320 416 -320 384 WIRE 368 432 368 384 WIRE 464 432 464 400 WIRE -160 464 -160 384 WIRE -144 464 -160 464 WIRE -32 464 -32 384 WIRE -32 464 -64 464 WIRE 16 464 -32 464 WIRE 64 512 64 480 WIRE -320 528 -320 496 FLAG -320 288 0 FLAG 240 288 Sec FLAG 368 432 0 FLAG 464 432 0 FLAG 64 512 0 FLAG -320 528 0 FLAG 464 288 V+ FLAG 256 160 0 FLAG 64 336 Vd FLAG 112 192 B FLAG 112 224 Hg FLAG 112 256 Hf SYMBOL voltage -320 160 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value 30 SYMBOL diode 288 272 M90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName D1 SYMBOL cap 352 320 R0 SYMATTR InstName C1 SYMATTR Value 3.3µ SYMBOL res 448 304 R0 SYMATTR InstName R1 SYMATTR Value 50 SYMBOL voltage -320 400 M0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 WINDOW 3 -324 166 Left 0 SYMATTR InstName V2 SYMATTR Value PULSE(0 13 0 100n 100n 3u 10u) SYMBOL res -48 448 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R2 SYMATTR Value 20 SYMBOL diode -80 368 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName D2 SYMBOL cap -176 160 R0 SYMATTR InstName C2 SYMATTR Value 680p SYMBOL res -256 144 R0 SYMATTR InstName R3 SYMATTR Value 500 SYMBOL res -32 272 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R4 SYMATTR Value 20 SYMBOL diode 32 272 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName D3 SYMBOL nmos 16 384 R0 SYMATTR InstName M1 SYMATTR Value FDB2532 SYMBOL Custom\\Transformer\\tr2 112 224 R0 WINDOW 3 0 -108 Center 0 SYMATTR Value N1=50 N2=50 i01=0 i02=0 SYMATTR InstName U1 TEXT -328 112 Left 0 !.tran 150u TEXT -384 -16 Left 0 ;(c) Peter KAPAS, Nov. 2006, Behavioral Non-Linear Transformer's Model Test TEXT -296 16 Left 0 ;[ Hysteretic core model by John Chan (see Help / L: Inductor) ] TEXT -352 624 Left 0 ;Hc | Coercive force [ Amp-turns/meter ]\nBr | Remnant Flux Density [ Tesla ]\nBs | Saturation Flux Density [ Tesla ]\n------------------------------------------------------------------------------------------------------\nB Flux Density [ Tesla ] / Graph : 1 Volt -> 1T \nHf Magnetizing Influence in the Material [ A/m ] / Graph : 1 Volt -> 1 A/m\nHg Magnetizing Influence in the Air Gap [ A/m ] / Graph : 1 Volt -> 1 A/m TEXT -352 848 Left 0 ;The Model uses the Initial Magnetization Curve as : B(H)=0.5*(Bu(H)+Bd(H)) TEXT -352 880 Left 0 ;To see the effect of non-linear core change V1 voltage from 30V to 60V TEXT -352 912 Left 0 ;Dynamic Inductances Ld1, Ld2 as a function of Hf are : V(u1:ld1) and V(u1:ld2) / 1V -> 1 H TEXT -352 944 Left 0 ;Dynamic permeability as a function of Hf is : V(u1:dB/dH)