Version 4 SHEET 1 880 788 WIRE -224 448 -224 432 WIRE -256 464 -464 464 WIRE -464 480 -464 464 WIRE -256 496 -352 496 WIRE -704 512 -704 496 WIRE -608 512 -608 496 WIRE 16 544 -80 544 WIRE -464 576 -464 560 WIRE -352 592 -352 576 WIRE -256 592 -352 592 WIRE -704 608 -704 592 WIRE -608 608 -608 592 WIRE -256 624 -288 624 WIRE -144 624 -144 608 WIRE -288 656 -288 624 WIRE -224 656 -224 640 FLAG -704 608 0 FLAG -608 608 0 FLAG -608 496 -V FLAG -464 576 0 FLAG -464 464 IN FLAG -144 624 0 FLAG 16 544 OUT FLAG -288 656 0 FLAG -224 432 +V FLAG -704 496 +V FLAG -224 656 -V SYMBOL voltage -704 496 R0 SYMATTR InstName V1 SYMATTR Value 5 SYMBOL voltage -608 496 R0 SYMATTR InstName V2 SYMATTR Value -5 SYMBOL res -368 480 R0 SYMATTR InstName R1 SYMATTR Value {R} SYMBOL LT1789-10 -224 544 R0 SYMATTR InstName U1 SYMBOL voltage -464 464 R0 WINDOW 123 26 105 Left 2 WINDOW 39 0 0 Left 2 SYMATTR Value2 AC 1 SYMATTR InstName V3 SYMATTR Value "" TEXT -160 680 Left 2 !.ac dec 100 100 1Meg\n.step PARAM R list 1e308 22.22K 2.0202K