Version 4
SHEET 1 980 680
WIRE 0 112 -96 112
WIRE 464 112 0 112
WIRE 0 160 0 112
WIRE 560 160 384 160
WIRE 208 240 160 240
WIRE 272 240 208 240
WIRE 384 240 352 240
WIRE -96 256 -96 112
WIRE 464 256 464 112
WIRE 384 272 384 240
WIRE 432 272 384 272
WIRE 0 288 0 240
WIRE 0 288 -32 288
WIRE 560 288 560 160
WIRE 560 288 496 288
WIRE 592 288 560 288
WIRE 432 304 384 304
WIRE 0 320 0 288
WIRE 208 336 208 320
WIRE 208 336 96 336
WIRE 272 336 208 336
WIRE 384 336 384 304
WIRE 384 336 352 336
WIRE 160 384 160 240
WIRE -96 464 -96 336
WIRE 0 464 0 400
WIRE 0 464 -96 464
WIRE 16 464 0 464
WIRE 96 464 96 416
WIRE 96 464 16 464
WIRE 160 464 96 464
WIRE 464 464 464 320
WIRE 464 464 160 464
WIRE -32 496 -32 288
WIRE 384 496 384 336
WIRE 384 496 -32 496
FLAG 16 464 0
SYMBOL voltage 96 320 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value -4.2
SYMBOL res 368 224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 368 144 R0
SYMATTR InstName R2
SYMATTR Value 100k
SYMBOL res 368 320 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res 192 224 R0
SYMATTR InstName R5
SYMATTR Value 0.01
SYMBOL res -16 144 R0
SYMATTR InstName R6
SYMATTR Value 200k
SYMBOL Opamps/UniversalOpamp2 464 288 R0
SYMATTR InstName U1
SYMBOL res -16 304 R0
SYMATTR InstName R7
SYMATTR Value 200k
SYMBOL res 144 368 R0
SYMATTR InstName R8
SYMATTR Value 4.2
SYMBOL voltage -96 240 R0
SYMATTR InstName V2
SYMATTR Value 5
TEXT 16 560 Left 2 !.tran 25m