Version 4 SHEET 1 1500 884 WIRE -416 -64 -672 -64 WIRE -320 -64 -336 -64 WIRE -672 16 -672 -64 WIRE -576 16 -672 16 WIRE -480 16 -576 16 WIRE 336 16 -480 16 WIRE 336 48 336 16 WIRE -48 80 -304 80 WIRE 48 80 32 80 WIRE -672 192 -672 16 WIRE -576 192 -576 16 WIRE -480 192 -480 16 WIRE 336 192 336 128 WIRE 336 192 224 192 WIRE -304 208 -304 80 WIRE -224 208 -304 208 WIRE 224 208 224 192 WIRE 224 208 96 208 WIRE 336 208 336 192 WIRE -352 272 -384 272 WIRE -224 272 -272 272 WIRE 224 272 96 272 WIRE 224 304 224 272 WIRE 336 304 336 288 WIRE 336 304 224 304 WIRE 336 320 336 304 WIRE -480 336 -480 272 WIRE -224 336 -480 336 WIRE 112 336 96 336 WIRE -576 400 -576 272 WIRE -224 400 -576 400 WIRE 208 400 96 400 WIRE 208 416 208 400 WIRE 336 416 336 400 WIRE -672 464 -672 272 WIRE -224 464 -672 464 WIRE 128 464 96 464 WIRE -672 480 -672 464 WIRE 208 512 208 496 WIRE -672 560 -672 544 FLAG 128 464 0 FLAG -384 272 0 FLAG 176 336 0 FLAG 336 416 0 FLAG -320 -64 0 FLAG -672 560 0 FLAG 208 512 0 FLAG 48 80 0 SYMBOL voltage -256 272 R90 WINDOW 0 -32 56 VBottom 2 WINDOW 3 34 73 VTop 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value PWL(0 0 10m 12) SYMBOL res 320 304 R0 SYMATTR InstName R1 SYMATTR Value 10K SYMBOL res 320 144 M180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R2 SYMATTR Value 57.6K SYMBOL res 320 304 M180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R3 SYMATTR Value 1.1K SYMBOL cap 176 320 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 29 VTop 2 SYMATTR InstName C1 SYMATTR Value 22n SYMBOL LTC2919-50 -64 336 R0 SYMATTR InstName U1 SYMBOL res -496 176 R0 SYMATTR InstName R6 SYMATTR Value 10K SYMBOL voltage -432 -64 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 -32 56 VBottom 2 SYMATTR InstName V2 SYMATTR Value PULSE(2.5 5 0 1000m 1000m 3000m 5000m) SYMBOL cap -656 544 R180 WINDOW 0 -34 53 Left 2 WINDOW 3 -66 14 Left 2 SYMATTR InstName C2 SYMATTR Value 1000p SYMBOL current 208 416 R0 SYMATTR InstName I1 SYMATTR Value PWL(0 0 1 0 1.001 1m 2 1m 2.001 -1m 3 -1m 4 -5m 4.001 -5m 5 5m) SYMBOL res -592 176 R0 SYMATTR InstName R4 SYMATTR Value 10K SYMBOL res -688 176 R0 SYMATTR InstName R5 SYMATTR Value 10K SYMBOL voltage -64 80 R270 WINDOW 3 -32 56 VBottom 2 WINDOW 0 32 56 VTop 2 SYMATTR Value PWL(0 0 5010m 0 5011m 0.9 10010m 0.9 10011m 5) SYMATTR InstName V3 TEXT -96 552 Left 2 !.tran 15