Version 4
SHEET 1 880 680
WIRE -32 -144 -112 -144
WIRE 32 -144 -32 -144
WIRE 112 -144 32 -144
WIRE 208 -144 112 -144
WIRE 288 -144 208 -144
WIRE 304 -144 288 -144
WIRE 304 -48 304 -144
WIRE 304 -48 240 -48
WIRE 32 -32 32 -144
WIRE 0 -16 -32 -16
WIRE 80 0 64 0
WIRE 176 0 160 0
WIRE 304 0 304 -48
WIRE 0 16 -96 16
WIRE 32 48 32 32
WIRE -32 112 -32 -16
WIRE 304 112 304 96
WIRE 304 112 -32 112
WIRE -96 128 -96 16
WIRE 304 128 304 112
WIRE -96 224 -96 208
WIRE 272 224 -96 224
WIRE 304 224 304 208
WIRE 304 224 272 224
WIRE 304 256 304 224
WIRE 304 352 304 336
FLAG 304 352 0
FLAG -112 -64 0
FLAG 32 48 0
FLAG 208 352 0
FLAG 208 272 Vr
FLAG 272 224 U_Last
FLAG -96 16 Uref
FLAG 112 -80 0
FLAG 208 -80 0
FLAG -32 -80 0
FLAG 288 -144 U_GL
SYMBOL OPAs\\LM358 32 0 R0
SYMATTR InstName U1
SYMBOL voltage -96 112 M0
WINDOW 3 11 97 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 0.3V
SYMBOL res 288 112 R0
SYMATTR InstName R1
SYMATTR Value 100m
SYMBOL npn 240 0 R0
SYMATTR InstName Q1
SYMATTR Value BD131
SYMBOL res 176 -16 R90
WINDOW 0 6 56 VBottom 2
WINDOW 3 26 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 100
SYMBOL res 288 240 R0
SYMATTR InstName R_LAST
SYMATTR Value R=0.1R*V(Vr)
SYMBOL voltage -112 -160 M0
WINDOW 3 -56 129 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 24 40 Left 2
SYMATTR InstName V2
SYMATTR Value SINE(12 1 50)
SYMATTR SpiceLine Rser=100m
SYMBOL npn 176 -48 R0
WINDOW 0 69 17 Left 2
WINDOW 3 34 37 Left 2
SYMATTR InstName Q2
SYMATTR Value 2N2222
SYMBOL voltage 208 256 M0
WINDOW 3 -89 149 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value PULSE(1n 30 0 1 1 1)
SYMBOL cap 96 -144 R0
SYMATTR InstName C1
SYMATTR Value 5600µ
SYMATTR SpiceLine Rser=25m
SYMBOL cap 192 -144 R0
SYMATTR InstName C2
SYMATTR Value 5600µ
SYMATTR SpiceLine Rser=25m
SYMBOL cap -48 -144 R0
SYMATTR InstName C3
SYMATTR Value 5600µ
SYMATTR SpiceLine Rser=25m
TEXT -86 350 Left 2 !.tran 1
TEXT 200 384 Left 2 ;variabler Widerstand 0 - 3 Ohm
TEXT -120 -208 Left 2 ;12V= überlagert mit 2Vss 50Hz-Sinus
RECTANGLE Normal 464 384 144 240 2