Version 4
SHEET 1 1488 680
WIRE -976 -96 -1056 -96
WIRE -832 -96 -896 -96
WIRE -288 -64 -288 -80
WIRE -832 -48 -832 -96
WIRE -1056 32 -1056 -96
WIRE -832 64 -832 32
WIRE -576 64 -832 64
WIRE -480 64 -496 64
WIRE -832 96 -832 64
WIRE -480 112 -480 64
WIRE -432 112 -480 112
WIRE -208 112 -352 112
WIRE -1056 160 -1056 112
WIRE -288 176 -288 16
WIRE -480 192 -480 112
WIRE -320 192 -480 192
WIRE -832 208 -832 176
WIRE -832 208 -896 208
WIRE -208 208 -208 112
WIRE -208 208 -256 208
WIRE 48 208 -208 208
WIRE -400 224 -480 224
WIRE -320 224 -400 224
WIRE -832 240 -832 208
WIRE -896 256 -896 208
WIRE 48 272 48 208
WIRE -400 288 -400 224
WIRE -288 352 -288 240
WIRE -832 368 -832 320
WIRE -480 368 -480 224
WIRE -480 368 -832 368
WIRE -400 464 -400 368
WIRE -288 464 -288 432
WIRE 48 464 48 352
FLAG -288 -80 0
FLAG -288 464 0
FLAG -896 256 0
FLAG -1056 160 0
FLAG -400 464 0
FLAG 48 464 0
SYMBOL voltage -288 32 R180
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL voltage -288 448 R180
WINDOW 0 24 96 Left 2
WINDOW 3 24 16 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 12
SYMBOL ind2 -848 -64 R0
SYMATTR InstName L1
SYMATTR Value 5000
SYMATTR Type ind
SYMBOL ind2 -848 80 R0
SYMATTR InstName L2
SYMATTR Value 5000
SYMATTR Type ind
SYMBOL ind2 -848 224 R0
SYMATTR InstName L3
SYMATTR Value 5000
SYMATTR Type ind
SYMBOL voltage -1056 16 R0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value2 AC 1.
SYMATTR InstName V3
SYMATTR Value SINE(0 1 620K)
SYMBOL res -880 -112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 1
SYMBOL Opamps\\LM833 -288 144 R0
SYMATTR InstName U1
SYMBOL res -336 96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 39k
SYMBOL res -384 384 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R7
SYMATTR Value 39k
SYMBOL res -480 48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 78k
SYMBOL res 64 368 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R_L
SYMATTR Value 50
TEXT -1056 496 Left 2 !.tran 1m
TEXT -1016 -184 Left 2 !K L1 L2 L3 1.0