Version 4
SHEET 1 2804 680
WIRE -128 -368 -512 -368
WIRE 1200 -368 -128 -368
WIRE -512 -336 -512 -368
WIRE 256 -288 240 -288
WIRE 352 -288 320 -288
WIRE 576 -288 352 -288
WIRE 752 -288 576 -288
WIRE 800 -288 752 -288
WIRE 912 -288 880 -288
WIRE 992 -288 912 -288
WIRE 1088 -288 1072 -288
WIRE -128 -272 -128 -368
WIRE 576 -272 576 -288
WIRE 752 -272 752 -288
WIRE 1200 -256 1200 -368
WIRE -512 -224 -512 -256
WIRE 1520 -224 1504 -224
WIRE 1616 -224 1584 -224
WIRE 1872 -224 1616 -224
WIRE 1920 -224 1872 -224
WIRE 2256 -224 2000 -224
WIRE 2336 -224 2256 -224
WIRE 2432 -224 2416 -224
WIRE 1616 -208 1616 -224
WIRE 2256 -192 2256 -224
WIRE 352 -176 352 -288
WIRE 576 -176 576 -192
WIRE 640 -176 576 -176
WIRE 752 -176 752 -192
WIRE 752 -176 704 -176
WIRE 576 -160 576 -176
WIRE 1872 -160 1872 -224
WIRE 912 -144 912 -288
WIRE 1616 -112 1616 -128
WIRE 1696 -112 1616 -112
WIRE 1808 -112 1776 -112
WIRE 752 -96 752 -176
WIRE 848 -96 752 -96
WIRE 1616 -96 1616 -112
WIRE 2112 -96 2048 -96
WIRE 2256 -96 2256 -112
WIRE 2256 -96 2192 -96
WIRE 2336 -96 2256 -96
WIRE 2448 -96 2400 -96
WIRE 2480 -96 2448 -96
WIRE 240 -80 -128 -80
WIRE 2256 -64 2256 -96
WIRE 576 -16 576 -80
WIRE 1616 -16 1616 -32
WIRE 1616 -16 1200 -16
WIRE 2048 -16 2048 -96
WIRE 2080 -16 2048 -16
WIRE 2192 -16 2160 -16
WIRE 1872 0 1872 -64
WIRE 2480 16 2480 -96
WIRE -384 32 -496 32
WIRE -48 32 -128 32
WIRE 0 32 -48 32
WIRE 32 32 0 32
WIRE 160 32 112 32
WIRE 192 32 160 32
WIRE 240 32 240 -80
WIRE 240 32 192 32
WIRE 256 32 240 32
WIRE 352 32 352 -96
WIRE 352 32 320 32
WIRE 384 32 352 32
WIRE 512 32 464 32
WIRE 912 32 912 -48
WIRE 976 32 912 32
WIRE 1088 32 1040 32
WIRE 1104 32 1088 32
WIRE 1376 32 1296 32
WIRE 1424 32 1376 32
WIRE 1456 32 1424 32
WIRE 1584 32 1536 32
WIRE 1616 32 1616 -16
WIRE 1616 32 1584 32
WIRE -496 80 -496 32
WIRE -384 80 -384 32
WIRE 32 80 32 32
WIRE 112 80 112 32
WIRE 912 80 912 32
WIRE 1104 80 1104 32
WIRE 1456 80 1456 32
WIRE 1536 80 1536 32
WIRE -128 96 -128 32
WIRE -48 96 -48 32
WIRE 192 96 192 32
WIRE 1296 96 1296 32
WIRE 1376 96 1376 32
WIRE 1616 96 1616 32
WIRE 1872 96 1872 80
WIRE 1952 96 1872 96
WIRE 2048 96 2048 -16
WIRE 2048 96 2016 96
WIRE 2256 96 2256 32
WIRE 576 112 576 80
WIRE 1872 112 1872 96
WIRE -496 224 -496 160
WIRE -384 224 -384 160
WIRE -384 224 -496 224
WIRE -128 224 -128 160
WIRE -128 224 -384 224
WIRE -48 224 -48 160
WIRE -48 224 -128 224
WIRE 32 224 32 160
WIRE 32 224 -48 224
WIRE 112 224 112 160
WIRE 112 224 32 224
WIRE 192 224 192 160
WIRE 192 224 112 224
WIRE 576 224 576 192
WIRE 576 224 192 224
WIRE 912 224 912 160
WIRE 912 224 576 224
WIRE 1104 224 1104 160
WIRE 1104 224 912 224
WIRE 1296 224 1296 160
WIRE 1376 224 1376 160
WIRE 1376 224 1296 224
WIRE 1456 224 1456 160
WIRE 1456 224 1376 224
WIRE 1536 224 1536 160
WIRE 1536 224 1456 224
WIRE 1616 224 1616 160
WIRE 1616 224 1536 224
WIRE 1872 224 1872 192
WIRE 1872 224 1616 224
WIRE 2256 224 2256 176
WIRE 2256 224 1872 224
WIRE 2480 224 2480 96
WIRE 2480 224 2256 224
WIRE -496 240 -496 224
WIRE 1296 240 1296 224
FLAG -496 240 0
FLAG 1088 -288 0
FLAG 1088 32 out1
FLAG 160 32 in1
FLAG 0 32 loop1
FLAG 240 -288 0
FLAG 2432 -224 0
FLAG 2448 -96 out2
FLAG 1584 32 in2
FLAG 1424 32 loop2
FLAG 1504 -224 0
FLAG 1296 240 0
FLAG -512 -224 0
SYMBOL ind2 16 64 R0
WINDOW 0 -29 77 Left 2
WINDOW 3 -46 107 Left 2
SYMATTR InstName L1
SYMATTR Value 100µ
SYMATTR Type ind
SYMATTR SpiceLine Rser=4
SYMBOL ind2 -400 64 R0
WINDOW 0 -31 22 Left 2
WINDOW 3 -22 68 Left 2
SYMATTR InstName Ltx
SYMATTR Value 1
SYMATTR Type ind
SYMBOL current -496 80 M0
WINDOW 123 -46 88 Left 2
WINDOW 39 0 0 Left 2
WINDOW 0 37 52 Left 2
WINDOW 3 -177 121 Left 2
SYMATTR Value2 AC 1.6e-5
SYMATTR InstName I1
SYMATTR Value SINE(0 2.25e-5 1Meg)
SYMBOL voltage 976 -288 M90
WINDOW 0 -32 56 VBottom 2
WINDOW 3 32 56 VTop 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 8V
SYMBOL res 1088 64 R0
SYMATTR InstName R3
SYMATTR Value 50
SYMBOL npn 848 -144 R0
WINDOW 0 61 21 Left 2
WINDOW 3 29 49 Left 2
SYMATTR InstName Q1
SYMATTR Value BF199
SYMBOL res 928 64 M0
SYMATTR InstName R4
SYMATTR Value 150
SYMBOL cap 976 16 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 220n
SYMBOL cap 320 16 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 10n
SYMBOL npn 512 -16 R0
SYMATTR InstName Q2
SYMATTR Value BF199
SYMBOL cap -112 96 M0
WINDOW 3 11 57 Left 2
SYMATTR Value 198.5p
SYMATTR InstName C4
SYMBOL cap -32 96 M0
SYMATTR InstName C5
SYMATTR Value 54p
SYMBOL ind2 128 64 M0
WINDOW 0 -30 40 Left 2
WINDOW 3 -31 80 Left 2
SYMATTR InstName L2
SYMATTR Value 5µ
SYMATTR Type ind
SYMBOL cap 176 96 R0
SYMATTR InstName C6
SYMATTR Value 3.5p
SYMBOL res 336 -192 R0
SYMATTR InstName R2
SYMATTR Value 68k
SYMBOL res 592 96 M0
SYMATTR InstName R1
SYMATTR Value 33
SYMBOL res 560 -176 R0
SYMATTR InstName R10
SYMATTR Value 1
SYMBOL res 560 -288 R0
SYMATTR InstName R5
SYMATTR Value 249
SYMBOL res 896 -304 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 200
SYMBOL cap 320 -304 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 220n
SYMBOL cap 704 -192 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C7
SYMATTR Value 10n
SYMBOL res 736 -288 R0
SYMATTR InstName R7
SYMATTR Value 4.7k
SYMBOL ind2 1440 64 R0
WINDOW 0 -29 77 Left 2
WINDOW 3 -46 107 Left 2
SYMATTR InstName L3
SYMATTR Value 100µ
SYMATTR Type ind
SYMATTR SpiceLine Rser=4
SYMBOL voltage 2320 -224 M90
WINDOW 0 -32 56 VBottom 2
WINDOW 3 32 56 VTop 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 8V
SYMBOL res 2464 0 R0
SYMATTR InstName R8
SYMATTR Value 50
SYMBOL npn 2192 -64 R0
WINDOW 0 61 21 Left 2
WINDOW 3 29 49 Left 2
SYMATTR InstName Q3
SYMATTR Value BF199
SYMBOL res 2272 80 M0
SYMATTR InstName R9
SYMATTR Value 4.7
SYMBOL cap 2336 -112 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C8
SYMATTR Value 220n
SYMBOL cap 1632 -96 M0
SYMATTR InstName C9
SYMATTR Value 10n
SYMBOL npn 1808 -160 R0
SYMATTR InstName Q4
SYMATTR Value BF199
SYMBOL cap 1312 96 M0
WINDOW 3 11 57 Left 2
SYMATTR Value 199.1p
SYMATTR InstName C10
SYMBOL cap 1392 96 M0
SYMATTR InstName C11
SYMATTR Value 54p
SYMBOL ind2 1552 64 M0
WINDOW 0 -30 40 Left 2
WINDOW 3 -31 80 Left 2
SYMATTR InstName L4
SYMATTR Value 5µ
SYMATTR Type ind
SYMBOL cap 1600 96 R0
SYMATTR InstName C12
SYMATTR Value 3.5p
SYMBOL res 1600 -224 R0
SYMATTR InstName R11
SYMATTR Value 68k
SYMBOL res 1856 96 R0
SYMATTR InstName R13
SYMATTR Value 249
SYMBOL res 1856 -16 R0
SYMATTR InstName R14
SYMATTR Value 1
SYMBOL res 2016 -240 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R15
SYMATTR Value 200
SYMBOL cap 1584 -240 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C13
SYMATTR Value 220n
SYMBOL cap 2016 80 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C14
SYMATTR Value 10n
SYMBOL res 2208 -112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R16
SYMATTR Value 22k
SYMBOL res 368 16 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R12
SYMATTR Value 47
SYMBOL res 1792 -128 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R17
SYMATTR Value 100
SYMBOL res 2240 -208 R0
SYMATTR InstName R18
SYMATTR Value 56
SYMBOL res 2176 -32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R19
SYMATTR Value 100
SYMBOL voltage -512 -352 R0
WINDOW 123 24 44 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value SINE(0 0 1Meg)
SYMATTR Value2 AC 2
SYMBOL res -144 -288 R0
SYMATTR InstName R20
SYMATTR Value 3.5k
SYMBOL res 1184 -272 R0
SYMATTR InstName R21
SYMATTR Value 3.5k
TEXT -40 -16 Left 2 ;9 Wdg. D=100cm
TEXT -448 248 Left 2 !K1 Ltx L1 L3 2e-3
TEXT -616 -104 Left 2 !.tran 0 1.1m 0 10n
TEXT -616 -72 Left 2 !;ac dec 2k 100k 10Meg
TEXT -616 -40 Left 2 !;noise v(out1) V3 dec 100 100k 10Meg
TEXT -16 248 Left 2 !K2 L1 L2 0.9
TEXT 544 -72 VLeft 2 ;Poti 200-250 Ohm
TEXT 1416 248 Left 2 !K4 L3 L4 0.9
TEXT 1832 208 VLeft 2 ;Poti 200-250 Ohm
TEXT -616 -8 Left 2 !;noise v(out2) V3 dec 100 100k 10Meg
TEXT 1064 -32 Left 2 ;/5
TEXT 1224 -64 Left 2 ;bez. auf v(in2)\n43/4.7 = 9.1nV/sqrt(Hz)
TEXT -80 -128 Left 2 ;bez. auf v(in1)\n49.5 / 5 = 9.9nV/sqrt(Hz)