Version 4
SHEET 1 880 680
WIRE 96 112 64 112
WIRE 176 128 160 128
WIRE 320 128 256 128
WIRE 96 144 80 144
WIRE 464 144 384 144
WIRE -16 160 -16 144
WIRE 64 160 64 112
WIRE 64 160 -16 160
WIRE 320 160 272 160
WIRE 464 160 464 144
WIRE 80 192 80 144
WIRE 176 192 176 128
WIRE 176 192 80 192
WIRE -16 208 -16 160
WIRE 272 256 272 160
WIRE 464 256 464 224
WIRE 464 256 272 256
WIRE 256 272 256 128
WIRE 256 272 176 272
WIRE -16 352 -16 272
FLAG 176 352 0
FLAG 464 336 0
FLAG -16 352 0
FLAG -256 336 0
FLAG -256 256 V_vers
FLAG -16 64 V_vers
FLAG -368 336 0
FLAG -368 256 V_op-
FLAG -464 336 0
FLAG -464 256 V_op+
FLAG 128 160 V_op+
FLAG 352 176 V_op+
FLAG 128 96 V_op-
FLAG 352 112 V_op-
SYMBOL res -32 48 R0
SYMATTR InstName R1
SYMATTR Value 6.8k
SYMBOL res 160 176 R0
SYMATTR InstName R2
SYMATTR Value 2k
SYMBOL res 160 256 R0
SYMATTR InstName R3
SYMATTR Value 2k
SYMBOL res 448 240 R0
SYMATTR InstName R4
SYMATTR Value 56
SYMBOL LED -32 208 R0
SYMATTR InstName D1
SYMBOL LED 448 160 R0
SYMATTR InstName D3
SYMBOL voltage -256 240 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 10
SYMBOL Opamps\\OP07 128 192 M180
SYMATTR InstName U1
SYMBOL Opamps\\OP07 352 208 M180
SYMATTR InstName U2
SYMBOL voltage -368 240 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value -12
SYMBOL voltage -464 240 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value 12
TEXT -232 400 Left 2 !.tran 10m
TEXT -216 448 Left 2 ;.op
TEXT -24 -160 Left 2 ;https://www.mikrocontroller.net/topic/487952#new\nVerständnisfrage OP Dimmer für LED
TEXT -16 -112 Left 2 ;spannungsgesteuerte Spannungsquelle
RECTANGLE Normal 592 400 -64 -48 2
RECTANGLE Normal -192 368 -528 144 2