Version 4
SHEET 1 888 680
WIRE 192 -32 -16 -32
WIRE 464 -32 192 -32
WIRE 640 -32 464 -32
WIRE -16 -16 -16 -32
WIRE 192 -16 192 -32
WIRE 464 32 464 -32
WIRE 192 80 192 64
WIRE 304 80 192 80
WIRE 400 80 384 80
WIRE -16 96 -16 64
WIRE 272 96 -16 96
WIRE -16 112 -16 96
WIRE 192 112 192 80
WIRE 464 144 464 128
WIRE 640 144 640 -32
WIRE -160 160 -192 160
WIRE 272 160 272 96
WIRE 272 160 256 160
WIRE -192 192 -192 160
WIRE 32 208 -16 208
WIRE 192 208 32 208
WIRE -192 224 -192 192
WIRE 32 224 32 208
WIRE -192 320 -192 304
WIRE -144 320 -192 320
WIRE 32 320 32 304
WIRE 32 320 -144 320
WIRE 464 320 464 288
WIRE 464 320 32 320
WIRE 640 320 640 224
WIRE 640 320 464 320
WIRE -144 336 -144 320
FLAG -144 336 0
FLAG -192 192 ein
FLAG 464 128 aus
SYMBOL voltage 640 128 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 9V
SYMBOL voltage -192 208 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value SINE(5 5 1)
SYMBOL res -64 144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL npn -80 112 R0
SYMATTR InstName Q1
SYMBOL res -32 -32 R0
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL res 16 208 R0
SYMATTR InstName R3
SYMATTR Value 1k
SYMBOL npn 256 112 M0
SYMATTR InstName Q2
SYMBOL res 176 -32 R0
SYMATTR InstName R4
SYMATTR Value 100
SYMBOL res 400 64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 2.2k
SYMBOL pnp 400 128 M180
SYMATTR InstName Q3
SYMBOL res 448 128 R0
SYMATTR InstName R6
SYMATTR Value 2.2k
SYMBOL LED 448 224 R0
SYMATTR InstName D1
TEXT 694 304 Left 2 !.tran 1