Version 4
SHEET 1 880 680
WIRE 192 0 160 0
WIRE 304 0 272 0
WIRE 160 48 160 0
WIRE 160 48 64 48
WIRE 64 80 64 48
WIRE 224 112 224 96
WIRE 160 144 160 48
WIRE 176 144 160 144
WIRE 304 144 304 0
WIRE 304 144 288 144
WIRE 368 144 304 144
WIRE -64 160 -64 144
WIRE 64 160 64 144
WIRE 224 192 224 176
WIRE -64 256 -64 240
WIRE 64 256 64 240
FLAG 224 192 0
FLAG 224 96 V+
FLAG 64 256 0
FLAG -64 256 0
FLAG -64 144 V+
FLAG 368 144 out
IOPIN 368 144 Out
SYMBOL CD4069UB 224 80 R0
SYMATTR InstName U1
SYMBOL voltage 64 144 R0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 0
SYMATTR Value2 AC 1 0
SYMBOL voltage -64 144 R0
SYMATTR InstName V2
SYMATTR Value 9
SYMBOL cap 48 80 R0
SYMATTR InstName C1
SYMATTR Value 1
SYMBOL res 288 -16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 22meg
TEXT -80 24 Left 2 !.ac oct 1 1k 1k
TEXT -72 304 Left 2 !.step v2 5 15 100m