Version 4
SHEET 1 880 680
WIRE 16 32 -16 32
WIRE 128 32 96 32
WIRE 352 32 128 32
WIRE 352 48 352 32
WIRE 128 96 128 32
WIRE 256 96 224 96
WIRE 288 96 256 96
WIRE -16 144 -16 32
WIRE 352 160 352 144
WIRE 352 160 176 160
WIRE 352 176 352 160
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 -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 3k
SYMBOL voltage -16 128 R0
WINDOW 3 -30 185 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value PULSE(3.6 3.7 0 1u 1u 1u 10u 1)
TEXT -50 334 Left 2 !.tran 0 50m 30m