Version 4 SHEET 1 1032 680 WIRE 448 48 240 48 WIRE 128 80 112 80 WIRE 320 80 208 80 WIRE 448 80 448 48 WIRE 240 160 240 48 WIRE -128 176 -160 176 WIRE 0 176 -128 176 WIRE 112 176 112 80 WIRE 112 176 80 176 WIRE 208 176 112 176 WIRE 320 192 320 80 WIRE 320 192 272 192 WIRE 592 192 320 192 WIRE 160 208 112 208 WIRE 208 208 160 208 WIRE 592 240 592 192 WIRE -160 272 -160 176 WIRE 112 304 112 208 WIRE 240 304 240 224 WIRE 320 304 240 304 WIRE 448 304 448 160 WIRE 448 304 320 304 WIRE 320 352 320 304 WIRE -160 432 -160 352 WIRE 112 480 112 384 WIRE 592 512 592 320 FLAG 592 512 0 FLAG 320 352 0 FLAG 112 480 0 FLAG -160 432 0 FLAG 160 208 Vref FLAG -128 176 Vin FLAG 592 192 Vout SYMBOL res 96 160 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 330 SYMBOL res 224 64 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 100K SYMBOL res 576 224 R0 SYMATTR InstName R3 SYMATTR Value 1.2K SYMBOL Misc\\battery 448 64 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 24 SYMBOL Misc\\battery -160 256 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V3 SYMATTR Value 9.98 SYMBOL Misc\\battery 112 288 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value 10V SYMBOL Opamps\\OP777 240 128 R0 SYMATTR InstName U1 TEXT -6 536 Left 2 !.tran 2ms startup