Version 4
SHEET 1 880 680
WIRE 96 64 -32 64
WIRE 240 64 176 64
WIRE 384 64 240 64
WIRE -32 112 -32 64
WIRE 240 128 240 64
WIRE 240 240 240 192
WIRE -32 256 -32 192
WIRE 128 256 -32 256
WIRE 240 256 240 240
WIRE 240 256 128 256
WIRE 384 256 240 256
WIRE 128 272 128 256
FLAG 128 272 0
FLAG -32 64 in
FLAG 240 240 out
SYMBOL res 192 48 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R1
SYMATTR Value 22k
SYMBOL cap 224 128 R0
SYMATTR InstName C1
SYMATTR Value 10n
SYMBOL voltage -32 96 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value PULSE(0 1 0 0 0 2m 4m 4)
TEXT -66 266 Left 0 !.tran 12m