Version 4
SHEET 1 880 680
WIRE -112 288 -112 160
WIRE -96 160 -112 160
WIRE -80 160 -96 160
WIRE 64 160 32 160
WIRE 64 176 64 160
WIRE 64 336 64 240
WIRE 96 160 64 160
WIRE 96 288 -112 288
WIRE 96 288 96 240
WIRE 128 240 96 240
WIRE 160 160 96 160
WIRE 160 208 160 160
WIRE 160 288 96 288
WIRE 160 288 160 272
WIRE 176 160 160 160
WIRE 304 160 288 160
WIRE 320 160 304 160
WIRE 320 176 320 160
WIRE 320 288 160 288
WIRE 320 288 320 240
FLAG 64 336 0
FLAG -96 160 1
FLAG 96 160 2
FLAG 304 160 3
SYMBOL Dig_Add\\CD4xxx\\cd40106b -32 112 R0
SYMATTR InstName U1
SYMBOL Dig_Add\\CD4xxx\\cd40106b 224 112 R0
SYMATTR InstName U2
SYMBOL cap 304 176 R0
SYMATTR InstName C1
SYMATTR Value 560p
SYMBOL cap 48 176 R0
WINDOW 0 -25 52 Left 0
WINDOW 3 -42 74 Left 0
SYMATTR InstName C2
SYMATTR Value 270p
SYMBOL Pote 144 176 R0
WINDOW 0 40 40 Left 0
SYMATTR InstName Pote
SYMATTR Value2 Set=.9
SYMATTR Value Rt=5k
TEXT -26 306 Left 0 !.tran 2u