Version 4
SHEET 1 880 680
WIRE 64 -32 -80 -32
WIRE 272 -32 144 -32
WIRE -432 0 -432 -32
WIRE -304 0 -304 -32
WIRE 80 80 32 80
WIRE 208 80 160 80
WIRE -432 112 -432 80
WIRE -304 112 -304 80
WIRE -16 128 -16 96
WIRE 32 144 32 80
WIRE 208 144 208 80
WIRE 208 144 80 144
WIRE 80 160 80 144
WIRE -192 176 -224 176
WIRE -80 176 -80 -32
WIRE -80 176 -112 176
WIRE -48 176 -80 176
WIRE 272 224 272 -32
WIRE 272 224 176 224
WIRE 368 224 272 224
WIRE -48 272 -448 272
WIRE 368 272 368 224
WIRE 128 288 128 272
WIRE -448 304 -448 272
WIRE -16 352 -16 320
WIRE 80 368 80 288
WIRE 128 368 128 352
WIRE 128 368 80 368
WIRE 368 384 368 352
WIRE 32 432 32 304
WIRE 80 432 32 432
WIRE 208 432 208 144
WIRE 208 432 160 432
WIRE -448 464 -448 384
FLAG -16 96 +40
FLAG -16 352 -40
FLAG -224 176 0
FLAG -448 464 0
FLAG -304 112 0
FLAG -432 112 0
FLAG -432 -32 +40
FLAG -304 -32 -40
FLAG 368 384 0
SYMBOL res 64 448 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R1
SYMATTR Value 1.2
SYMBOL res 64 96 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R2
SYMATTR Value 1.2
SYMBOL cap 112 288 R0
SYMATTR InstName C1
SYMATTR Value 47p
SYMBOL res 352 256 R0
SYMATTR InstName R3
SYMATTR Value 100
SYMBOL res 48 -16 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL res -208 192 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R5
SYMATTR Value 1k
SYMBOL voltage -448 288 R0
WINDOW 123 0 0 Left 0
WINDOW 39 24 132 Left 0
SYMATTR InstName V1
SYMATTR Value PULSE(-2 2 0 10n 10n 50u 100u)
SYMATTR SpiceLine Rser=50
SYMBOL voltage -432 -16 R0
SYMATTR InstName V2
SYMATTR Value 40
SYMBOL voltage -304 -16 R0
SYMATTR InstName V3
SYMATTR Value -40
SYMBOL PA19 0 224 R0
SYMATTR InstName U1
TEXT -482 506 Left 0 !.tran 0 .2m 0 1u
TEXT -480 536 Left 0 !.options plotwinsize=0