Version 4 SHEET 1 912 852 WIRE -208 0 -432 0 WIRE 96 0 -208 0 WIRE -432 16 -432 0 WIRE -208 16 -208 0 WIRE 96 48 96 0 WIRE -432 112 -432 96 WIRE -208 112 -208 96 WIRE -64 112 -208 112 WIRE 320 112 256 112 WIRE -208 128 -208 112 WIRE 320 128 320 112 WIRE 320 208 320 192 WIRE -208 224 -208 208 WIRE -64 240 -160 240 WIRE 272 240 256 240 WIRE -160 256 -160 240 WIRE 368 304 352 304 WIRE 464 304 448 304 WIRE 480 304 464 304 WIRE 576 304 560 304 WIRE 576 336 576 304 WIRE -160 352 -160 336 WIRE -64 352 -160 352 WIRE 464 352 464 304 WIRE 464 352 256 352 WIRE 528 352 464 352 WIRE -160 368 -160 352 WIRE 528 400 496 400 WIRE 496 416 496 400 WIRE 96 432 96 416 WIRE 576 432 576 416 WIRE -160 464 -160 448 WIRE 496 512 496 496 FLAG 96 432 0 FLAG -160 464 0 FLAG -208 224 0 FLAG -432 112 0 FLAG 320 208 0 FLAG 352 304 0 FLAG 496 512 0 FLAG 576 432 0 SYMBOL res -176 240 R0 SYMATTR InstName R5 SYMATTR Value 16.5K SYMBOL res -176 352 R0 SYMATTR InstName R6 SYMATTR Value 13K SYMBOL res -224 0 R0 SYMATTR InstName R7 SYMATTR Value 25K SYMBOL res -224 112 R0 SYMATTR InstName R8 SYMATTR Value 10K SYMBOL voltage -432 0 R0 SYMATTR InstName V2 SYMATTR Value PWL(0 0 1m 5) SYMBOL cap 304 192 M180 WINDOW 0 24 64 Left 2 WINDOW 3 24 8 Left 2 SYMATTR InstName C1 SYMATTR Value 0.1µ SYMBOL res 464 288 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R10 SYMATTR Value 400K SYMBOL res 576 288 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R11 SYMATTR Value 400K SYMBOL g2 576 320 R0 SYMATTR InstName G1 SYMATTR Value 1 SYMBOL voltage 496 400 R0 SYMATTR InstName V3 SYMATTR Value 1 SYMBOL PowerProducts\\LTC2927 96 224 R0 SYMATTR InstName U1 TEXT 264 520 Left 2 !.tran 1 2 0 1m