Version 4
SHEET 1 1156 724
WIRE 400 -160 224 -160
WIRE 496 -160 400 -160
WIRE -336 -144 -368 -144
WIRE -224 -144 -256 -144
WIRE -96 -144 -224 -144
WIRE 48 -144 -96 -144
WIRE -224 -112 -224 -144
WIRE -96 -112 -96 -144
WIRE 224 -80 224 -160
WIRE 400 -80 400 -160
WIRE 48 -32 48 -144
WIRE -96 0 -96 -32
WIRE -528 48 -608 48
WIRE -448 48 -528 48
WIRE -368 48 -448 48
WIRE -304 48 -368 48
WIRE -224 48 -224 -32
WIRE -224 48 -240 48
WIRE -160 48 -224 48
WIRE 400 64 400 0
WIRE 496 64 400 64
WIRE 608 64 560 64
WIRE 640 64 608 64
WIRE 736 64 720 64
WIRE 816 64 736 64
WIRE 848 64 816 64
WIRE -528 80 -528 48
WIRE 848 80 848 64
WIRE -608 96 -608 48
WIRE -448 96 -448 48
WIRE 400 96 400 64
WIRE 608 96 608 64
WIRE 736 96 736 64
WIRE -368 128 -368 112
WIRE -96 128 -96 96
WIRE -96 128 -368 128
WIRE -96 144 -96 128
WIRE 48 144 48 48
WIRE 64 144 48 144
WIRE 224 144 224 0
WIRE 224 144 208 144
WIRE 336 144 224 144
WIRE 224 176 224 144
WIRE 48 192 48 144
WIRE 608 192 608 160
WIRE 736 192 736 160
WIRE 848 192 848 160
WIRE -608 208 -608 176
WIRE -528 208 -528 160
WIRE -528 208 -608 208
WIRE -448 208 -448 160
WIRE -448 208 -528 208
WIRE -368 208 -368 192
WIRE -368 208 -448 208
WIRE -96 240 -96 224
WIRE -16 240 -96 240
WIRE -224 256 -224 48
WIRE -96 256 -96 240
WIRE 400 256 400 192
WIRE 224 304 224 256
WIRE 224 304 144 304
WIRE 336 304 224 304
WIRE -96 336 -224 336
WIRE -96 352 -96 336
WIRE 48 352 48 288
WIRE 224 384 224 304
WIRE 400 384 400 352
WIRE -160 448 -176 448
WIRE -16 448 -160 448
WIRE 80 448 64 448
WIRE 144 448 144 304
WIRE -176 528 -176 448
WIRE 224 544 224 464
WIRE 400 544 400 464
WIRE -176 672 -176 608
FLAG -96 352 0
FLAG -448 208 0
FLAG -368 -144 0
FLAG -176 672 0
FLAG -160 448 ZF-Ausgang
FLAG 48 352 0
FLAG 576 -160 0
FLAG 400 544 0
FLAG 224 544 0
FLAG 608 192 0
FLAG 736 192 0
FLAG 848 192 0
FLAG 816 64 NF-Signal
SYMBOL npn -160 0 R0
SYMATTR InstName Q1
SYMATTR Value BC547C
SYMBOL Misc\\EuropeanResistor -112 240 R0
SYMATTR InstName R3
SYMATTR Value 1.8k
SYMBOL Misc\\EuropeanResistor -240 -128 R0
SYMATTR InstName R6
SYMATTR Value 100k
SYMBOL Misc\\EuropeanResistor -240 240 R0
SYMATTR InstName R7
SYMATTR Value 100k
SYMBOL cap -304 64 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C4
SYMATTR Value 680p
SYMBOL cap -384 128 R0
SYMATTR InstName C5
SYMATTR Value 680p
SYMBOL cap -384 48 R0
SYMATTR InstName C6
SYMATTR Value 680p
SYMBOL ind2 -544 64 R0
SYMATTR InstName L1
SYMATTR Value 270µ
SYMATTR Type ind
SYMBOL cap -464 96 R0
SYMATTR InstName C7
SYMATTR Value 48.3p
SYMBOL Misc\\EuropeanResistor -624 80 R0
SYMATTR InstName R8
SYMATTR Value 300k
SYMBOL Misc\\EuropeanResistor -112 -128 R0
SYMATTR InstName R9
SYMATTR Value 330
SYMBOL cap 144 160 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C8
SYMATTR Value 100n
SYMBOL Misc\\battery -240 -144 R90
WINDOW 0 32 56 VTop 2
WINDOW 3 -32 56 VBottom 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V5
SYMATTR Value 6v
SYMBOL voltage -176 512 R0
WINDOW 3 -221 102 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value SINE(0 100m 489k)
SYMATTR InstName V2
SYMBOL cap 80 464 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C10
SYMATTR Value 100n
SYMBOL Misc\\EuropeanResistor 48 160 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R15
SYMATTR Value 3.3k
SYMBOL npn -16 192 R0
SYMATTR InstName Q2
SYMATTR Value BC547C
SYMBOL Misc\\EuropeanResistor -112 128 R0
SYMATTR InstName R1
SYMATTR Value 5.6k
SYMBOL Misc\\EuropeanResistor 32 -48 R0
SYMATTR InstName R2
SYMATTR Value 3.3k
SYMBOL Misc\\EuropeanResistor 384 -96 R0
SYMATTR InstName R4
SYMATTR Value 2.2k
SYMBOL Misc\\battery 480 -160 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 -32 56 VBottom 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 9V
SYMBOL Misc\\EuropeanResistor 384 368 R0
SYMATTR InstName R5
SYMATTR Value 150
SYMBOL cap 496 80 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C1
SYMATTR Value 470n
SYMBOL Misc\\EuropeanResistor 208 160 R0
SYMATTR InstName R10
SYMATTR Value 10k
SYMBOL Misc\\EuropeanResistor 208 -96 R0
SYMATTR InstName R11
SYMATTR Value 39k
SYMBOL npn 336 96 R0
SYMATTR InstName Q3
SYMATTR Value BC547C
SYMBOL npn 336 256 R0
SYMATTR InstName Q4
SYMATTR Value BC547C
SYMBOL Misc\\EuropeanResistor 208 368 R0
SYMATTR InstName R12
SYMATTR Value 10k
SYMBOL cap 592 96 R0
SYMATTR InstName C2
SYMATTR Value 12n
SYMBOL cap 720 96 R0
SYMATTR InstName C3
SYMATTR Value 12n
SYMBOL ind 624 80 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L2
SYMATTR Value 100m
SYMBOL Misc\\EuropeanResistor 832 64 R0
SYMATTR InstName R13
SYMATTR Value 2.2k
SYMBOL Misc\\EuropeanResistor -32 464 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R14
SYMATTR Value 1k
TEXT -384 568 Left 2 !.tran 0 30m 10m
TEXT -600 16 Left 2 ;BFO