Version 4
SHEET 1 992 680
WIRE 608 -32 -16 -32
WIRE -16 32 -16 -32
WIRE 16 32 -16 32
WIRE 128 32 96 32
WIRE 352 32 128 32
WIRE 352 48 352 32
WIRE 608 64 608 -32
WIRE 128 96 128 32
WIRE 256 96 224 96
WIRE 288 96 256 96
WIRE 560 128 480 128
WIRE -16 144 -16 32
WIRE 352 160 352 144
WIRE 352 160 176 160
WIRE 368 160 352 160
WIRE 480 160 480 128
WIRE 480 160 448 160
WIRE 752 160 608 160
WIRE 880 160 816 160
WIRE 352 176 352 160
WIRE 608 176 608 160
WIRE 176 192 176 160
WIRE -16 256 -16 224
WIRE 176 256 -16 256
WIRE 256 256 256 96
WIRE 256 256 176 256
WIRE 352 256 256 256
WIRE 608 256 352 256
WIRE 880 256 880 240
WIRE 880 256 608 256
WIRE -16 272 -16 256
FLAG -16 272 0
SYMBOL pnp 224 160 M270
SYMATTR InstName Q1
SYMATTR Value BC557C
SYMBOL pnp 288 144 M180
SYMATTR InstName Q2
SYMATTR Value BC557C
SYMBOL ind 336 160 R0
SYMATTR InstName L1
SYMATTR Value 1m
SYMBOL cap 160 192 R0
SYMATTR InstName C1
SYMATTR Value 10µ
SYMBOL res 112 16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 4.7k
SYMBOL voltage -16 128 R0
WINDOW 3 -30 185 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value PULSE(3.6 3.7 0 1u 1u 1u 10u 1)
SYMATTR InstName V1
SYMBOL njf 560 64 R0
SYMATTR InstName J1
SYMATTR Value BF244A
SYMBOL res 464 144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 100k
SYMBOL res 592 160 R0
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL cap 816 144 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 470n
SYMBOL res 864 144 R0
SYMATTR InstName R_load
SYMATTR Value 10k
TEXT -48 336 Left 2 !.tran 0 150m 130m