Version 4
SHEET 1 880 692
WIRE 192 -112 80 -112
WIRE 608 -112 192 -112
WIRE 192 -80 192 -112
WIRE 128 -32 80 -32
WIRE 80 48 80 -32
WIRE 192 64 192 16
WIRE 192 144 192 128
WIRE 16 176 -224 176
WIRE 16 192 16 176
WIRE 80 192 80 112
WIRE -224 240 -224 176
WIRE 192 240 192 144
WIRE 256 240 192 240
WIRE 352 240 320 240
WIRE 432 240 416 240
WIRE 80 288 80 192
WIRE 192 288 192 240
WIRE 608 304 608 -112
WIRE 432 320 432 240
WIRE -224 336 -224 320
WIRE 304 352 80 352
WIRE 192 416 192 368
WIRE 80 432 80 352
WIRE 304 464 304 352
WIRE 304 464 256 464
WIRE 80 640 80 512
WIRE 144 640 80 640
WIRE 192 640 192 512
WIRE 192 640 144 640
WIRE 608 640 608 384
WIRE 608 640 192 640
WIRE 144 672 144 640
FLAG -224 336 0
FLAG 432 320 0
FLAG 144 672 0
SYMBOL npn 128 -80 R0
SYMATTR InstName Q1
SYMBOL voltage -224 224 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value SINE(0 0.4 50)
SYMBOL diode 64 48 R0
SYMATTR InstName D1
SYMBOL res 64 -128 R0
SYMATTR InstName R4
SYMATTR Value 470
SYMBOL diode 64 288 R0
SYMATTR InstName D2
SYMBOL res 64 416 R0
SYMATTR InstName R5
SYMATTR Value 470
SYMBOL voltage 608 288 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 9
SYMBOL pnp 256 512 R180
SYMATTR InstName Q2
SYMBOL cap 16 208 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C2
SYMATTR Value 10µ
SYMBOL res 176 48 R0
SYMATTR InstName R2
SYMATTR Value 10
SYMBOL res 176 272 R0
SYMATTR InstName R3
SYMATTR Value 10
SYMBOL cap 320 224 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 470µ
SYMBOL res 448 224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 8
TEXT -98 618 Left 2 !.tran 100m