Version 4 SHEET 1 880 680 WIRE 544 -48 352 -48 WIRE 352 -16 352 -48 WIRE 544 48 544 32 WIRE 352 112 352 64 WIRE 480 112 352 112 WIRE 784 112 544 112 WIRE 352 128 352 112 WIRE 784 160 784 112 WIRE -128 176 -272 176 WIRE 48 176 -48 176 WIRE 176 176 112 176 WIRE 272 176 176 176 WIRE 288 176 272 176 WIRE 176 192 176 176 WIRE -272 208 -272 176 WIRE 784 288 784 240 WIRE 176 304 176 272 WIRE 352 304 352 224 WIRE -272 352 -272 288 WIRE 176 416 176 384 FLAG 352 304 0 FLAG -272 352 0 FLAG 544 48 0 FLAG 176 416 0 FLAG 384 128 c FLAG 272 176 b FLAG 784 288 0 SYMBOL res 160 176 R0 SYMATTR InstName R1 SYMATTR Value 470 SYMBOL ind 336 -32 R0 SYMATTR InstName L1 SYMATTR Value 500µ SYMATTR SpiceLine Rser=0.05 SYMBOL cap 112 160 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 100n SYMBOL res 768 144 R0 WINDOW 3 56 85 Left 2 SYMATTR Value 135 SYMATTR InstName R2 SYMBOL npn 288 128 R0 SYMATTR InstName Q1 SYMATTR Value BC847A SYMBOL res -32 160 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 50 SYMBOL voltage 544 -64 R0 WINDOW 123 0 0 Left 2 WINDOW 39 24 124 Left 2 SYMATTR SpiceLine Rser=0.050 SYMATTR InstName V1 SYMATTR Value 8 SYMBOL voltage 176 288 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value 0.65 SYMBOL voltage -272 192 R0 WINDOW 39 0 0 Left 2 SYMATTR InstName V4 SYMATTR Value SINE(0 0.350 2e6) SYMBOL cap 544 96 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C3 SYMATTR Value 100n TEXT -304 440 Left 2 !.tran 0 43e-6 40e-6 0.1e-6 TEXT -808 -16 Left 2 ;A-Betrieb wenig Strom 50mV AC 0.85V Bias Ica=28,5mA\nA-Betrieb halber Icmax 55mV AC 0.96V Bias Ica=48.5mA\nB-Betrieb 350mV AC 0.65V Bias Ica=1mA\nAB-Betrieb 0.72V Bias Ica=6.3mA