Version 4
SHEET 1 880 680
WIRE -112 0 -176 0
WIRE -32 0 -112 0
WIRE 0 0 -32 0
WIRE 224 0 0 0
WIRE 0 32 0 0
WIRE -32 80 -32 0
WIRE -16 80 -32 80
WIRE 80 80 64 80
WIRE -176 96 -176 0
WIRE 224 96 224 0
WIRE 0 144 0 128
WIRE 48 144 0 144
WIRE 80 144 80 80
WIRE 80 144 48 144
WIRE 160 144 80 144
WIRE 336 144 288 144
WIRE 0 160 0 144
WIRE -176 272 -176 176
WIRE 0 272 0 240
WIRE 0 272 -176 272
WIRE 0 304 0 272
FLAG 0 304 0
FLAG 336 144 RAMP
IOPIN 336 144 Out
FLAG -112 0 VDD
FLAG 48 144 UB
SYMBOL pa 48 32 M0
SYMATTR InstName U1
SYMBOL current 0 160 R0
SYMATTR InstName I1
SYMATTR Value 10µ
SYMBOL voltage -176 80 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 -106 116 Left 0
SYMATTR InstName V1
SYMATTR Value PULSE(0 5 0 10u 10u 5 10)
SYMBOL RampGen1 224 144 R0
SYMATTR InstName RMP
TEXT -104 336 Left 0 !.include C:/Programs/LTspiceIV/lib/sub/GFlev8.sub
TEXT 112 280 Left 0 !.tran 0 500u 0
TEXT 248 280 Left 0 !;.ic V(RAMP)=2.9