Version 4
SHEET 1 4432 680
WIRE 1664 -304 1440 -304
WIRE 1728 -304 1664 -304
WIRE 1728 -256 1728 -304
WIRE 1440 -224 1440 -304
WIRE 1664 -160 1664 -304
WIRE 1440 -80 1440 -144
WIRE 1504 -80 1440 -80
WIRE 1552 -80 1504 -80
WIRE 1552 -32 1552 -80
WIRE 1664 -32 1664 -80
WIRE 1760 -32 1664 -32
WIRE 1440 48 1440 -80
WIRE 1440 48 1408 48
WIRE 1760 64 1760 32
WIRE 1760 80 1760 64
WIRE 1200 96 1008 96
WIRE 1344 96 1264 96
WIRE 1008 112 1008 96
WIRE 1664 112 1664 -32
WIRE 1664 112 1632 112
WIRE 1440 144 1408 144
WIRE 1552 160 1552 32
WIRE 1568 160 1552 160
WIRE 1664 208 1632 208
WIRE 1440 272 1440 144
FLAG 1440 272 0
FLAG 1728 -176 0
FLAG 1008 192 0
FLAG 1664 208 0
FLAG 1504 -80 A
FLAG 1760 160 0
FLAG 1760 64 out
SYMBOL res 1424 -240 R0
SYMATTR InstName R2
SYMATTR Value 300k
SYMBOL voltage 1728 -272 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 300
SYMBOL cap 1536 -32 R0
SYMATTR InstName C1
SYMATTR Value 0.1µ
SYMBOL cap 1264 80 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 0.1µ
SYMBOL voltage 1008 96 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR SpiceLine Rser=1k
SYMATTR InstName V2
SYMATTR Value SINE(0 50u 1k)
SYMBOL res 1648 -176 R0
SYMATTR InstName R4
SYMATTR Value 300k
SYMBOL cap 1744 -32 R0
SYMATTR InstName C3
SYMATTR Value 0.1µ
SYMBOL res 1744 64 R0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL KT315G_Avalanche 1600 160 R0
SYMATTR InstName X1
SYMBOL KT315G_Avalanche 1376 96 R0
SYMATTR InstName X2
TEXT 1248 296 Left 2 !.tran 0 50m 0 10u