Version 4
SHEET 1 880 696
WIRE -80 -48 -208 -48
WIRE 48 -48 -80 -48
WIRE 192 -48 128 -48
WIRE -208 -16 -208 -48
WIRE 192 16 192 -48
WIRE 320 16 192 16
WIRE 48 80 -32 80
WIRE 192 80 192 16
WIRE 192 80 128 80
WIRE -208 96 -208 64
WIRE -32 112 -32 80
WIRE -32 224 -32 192
WIRE 32 320 -48 320
WIRE 176 320 112 320
WIRE 176 384 176 320
WIRE 304 384 176 384
WIRE 32 448 -48 448
WIRE 176 448 176 384
WIRE 176 448 112 448
WIRE -48 480 -48 448
WIRE 176 480 176 448
WIRE -48 592 -48 560
WIRE 176 592 176 560
FLAG -32 224 0
FLAG -208 96 0
FLAG 320 16 out
FLAG -80 -48 in
FLAG -48 592 0
FLAG 304 384 out2
FLAG 176 592 0
FLAG -48 320 in
SYMBOL res 144 -64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 3k
SYMBOL res 32 96 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL voltage -32 96 R0
SYMATTR InstName VR1
SYMATTR Value 3.3333
SYMBOL voltage -208 -32 R0
WINDOW 3 -281 167 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PULSE(-10 10 0 10n 10n 490n 1u)
SYMBOL res 128 304 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 3k
SYMBOL res 16 464 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 1.5k
SYMBOL voltage -48 464 R0
SYMATTR InstName VR2
SYMATTR Value 5
SYMBOL res 160 464 R0
SYMATTR InstName R5
SYMATTR Value 3k
TEXT -224 680 Left 2 !.tran 2u