Version 4 SHEET 1 880 680 WIRE 208 -224 96 -224 WIRE 208 -208 208 -224 WIRE 96 -192 96 -224 WIRE 96 -112 96 -128 WIRE 96 -112 -32 -112 WIRE 96 -96 96 -112 WIRE 208 -96 208 -128 WIRE 96 0 96 -32 WIRE -160 80 -256 80 WIRE -64 80 -80 80 WIRE -32 80 -32 -112 WIRE -32 80 -64 80 WIRE 16 80 -32 80 WIRE 144 80 16 80 WIRE 400 96 208 96 WIRE 432 96 400 96 WIRE 544 96 512 96 WIRE 624 96 544 96 WIRE 640 96 624 96 WIRE 784 96 720 96 WIRE -64 112 -64 80 WIRE 16 112 16 80 WIRE 144 112 112 112 WIRE 784 112 784 96 WIRE 112 160 112 112 WIRE 544 160 544 96 WIRE 624 160 624 96 WIRE -256 256 -256 80 WIRE 112 256 112 240 WIRE 192 256 112 256 WIRE 272 256 256 256 WIRE 320 256 272 256 WIRE 400 256 400 96 WIRE 544 256 544 240 WIRE 624 256 624 224 WIRE 624 256 544 256 WIRE 656 256 624 256 WIRE 784 256 784 192 WIRE 784 256 656 256 WIRE 656 272 656 256 WIRE 112 336 112 256 WIRE 192 336 112 336 WIRE 272 336 272 256 WIRE 112 368 112 336 WIRE -256 448 -256 336 WIRE -160 448 -256 448 WIRE -64 448 -64 192 WIRE -64 448 -160 448 WIRE 16 448 16 176 WIRE 16 448 -64 448 WIRE 112 448 16 448 WIRE -160 464 -160 448 WIRE -160 576 -160 544 FLAG -160 576 0 FLAG 656 272 0 FLAG 96 0 0 FLAG 208 -96 0 SYMBOL res -176 96 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R1 SYMATTR Value 22k SYMBOL res -80 96 R0 SYMATTR InstName R2 SYMATTR Value 680k SYMBOL res 304 272 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R3 SYMATTR Value 82k SYMBOL res 96 144 R0 SYMATTR InstName R4 SYMATTR Value 680k SYMBOL res 96 352 R0 SYMATTR InstName R5 SYMATTR Value 82k SYMBOL res 288 320 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 680k SYMBOL res 416 112 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R7 SYMATTR Value 470k SYMBOL res 528 144 R0 SYMATTR InstName R8 SYMATTR Value 470k SYMBOL res 624 112 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R9 SYMATTR Value 10k SYMBOL cap 608 160 R0 SYMATTR InstName C1 SYMATTR Value 470n SYMBOL cap 0 112 R0 SYMATTR InstName C2 SYMATTR Value 33n SYMBOL cap 192 272 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C3 SYMATTR Value 220n SYMBOL Opamps\\opamp 176 160 M180 SYMATTR InstName U1 SYMBOL voltage 784 96 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 5 SYMBOL voltage -160 448 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value 4.8 SYMBOL voltage -256 240 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V3 SYMATTR Value 5 SYMBOL diode 80 -128 M180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D1 SYMBOL diode 112 -32 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D2 SYMBOL voltage 208 -224 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V4 SYMATTR Value 9.1 TEXT -288 600 Left 2 !.tran 100