Version 4
SHEET 1 880 680
WIRE 64 48 48 48
WIRE 160 48 128 48
WIRE 288 48 240 48
WIRE 128 144 128 96
WIRE 208 144 208 96
WIRE 176 160 144 160
WIRE 288 176 288 48
WIRE 288 176 240 176
WIRE 384 176 288 176
WIRE 48 192 48 48
WIRE 48 192 16 192
WIRE 80 192 48 192
WIRE 176 192 80 192
WIRE 16 208 16 192
WIRE 80 208 80 192
WIRE 208 240 208 208
WIRE 144 288 144 160
WIRE 208 288 144 288
WIRE 288 288 288 176
WIRE 144 320 144 288
WIRE 16 416 16 288
WIRE 80 416 80 272
WIRE 80 416 16 416
WIRE 144 416 144 400
WIRE 144 416 80 416
WIRE 384 416 144 416
WIRE 384 432 384 416
FLAG 384 432 0
FLAG 208 240 0
FLAG 128 144 0
SYMBOL Opamps\\LT1007 208 112 R0
SYMATTR InstName U1
SYMBOL Misc\\EuropeanResistor 144 64 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 10200
SYMBOL Misc\\EuropeanResistor 32 304 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R2
SYMATTR Value 10200
SYMBOL Misc\\EuropeanResistor 160 416 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R3
SYMATTR Value 47k
SYMBOL Misc\\EuropeanResistor 192 304 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 100k
SYMBOL cap 64 64 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C1
SYMATTR Value 3n
SYMBOL cap 96 272 R180
WINDOW 0 24 56 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName C2
SYMATTR Value 3n
SYMBOL voltage 224 96 R90
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 12
TEXT -74 456 Left 2 !.tran 10