Version 4
SHEET 1 1148 680
WIRE 1088 32 848 32
WIRE 848 112 848 32
WIRE 544 224 496 224
WIRE 672 224 608 224
WIRE 704 224 672 224
WIRE 848 224 848 192
WIRE 848 224 768 224
WIRE 960 224 848 224
WIRE 1088 224 1088 32
WIRE 848 240 848 224
WIRE 960 272 960 224
WIRE 496 288 496 224
WIRE 496 288 480 288
WIRE 560 288 496 288
WIRE 672 288 672 224
WIRE 672 288 640 288
WIRE 784 288 672 288
WIRE 480 320 480 288
WIRE 1088 400 1088 304
WIRE 848 416 848 336
WIRE 960 416 960 336
WIRE 480 432 480 400
FLAG 848 416 0
FLAG 1088 400 0
FLAG 480 432 0
FLAG 960 416 0
SYMBOL npn 784 240 R0
SYMATTR InstName Q1
SYMATTR Value BC817-40
SYMBOL res 656 272 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R1
SYMATTR Value 1000
SYMBOL res 864 208 R180
WINDOW 0 36 76 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName R2
SYMATTR Value 100
SYMBOL voltage 1088 208 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 15
SYMBOL voltage 480 304 R0
WINDOW 123 0 0 Left 0
WINDOW 39 24 132 Left 0
SYMATTR InstName V2
SYMATTR Value PULSE(0 5 1E-6 1E-9 1E-9 5E-6 10E-6 2)
SYMATTR SpiceLine Rser=0 Cpar=100pF
SYMBOL cap 944 272 R0
SYMATTR InstName C1
SYMATTR Value 100p
SYMBOL schottky 704 240 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName D1
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 608 208 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C2
SYMATTR Value 47p
TEXT 446 456 Left 0 !.tran 0 10E-6 0 10ns