Version 4
SHEET 1 1504 680
WIRE 128 -144 128 -160
WIRE 128 -48 128 -64
WIRE 256 -48 128 -48
WIRE 128 -32 128 -48
WIRE -96 32 -128 32
WIRE -16 48 -32 48
WIRE 80 48 64 48
WIRE -96 64 -304 64
WIRE -304 96 -304 64
WIRE -128 176 -128 32
WIRE 128 176 128 64
WIRE 128 176 -128 176
WIRE -304 192 -304 176
WIRE 128 192 128 176
WIRE 128 288 128 272
FLAG -304 192 0
FLAG 128 288 0
FLAG -208 -144 OPV+
IOPIN -208 -144 Out
FLAG -208 -64 0
FLAG -64 16 OPV+
IOPIN -64 16 Out
FLAG 128 -160 OPV+
IOPIN 128 -160 Out
FLAG -304 -128 OPV-
IOPIN -304 -128 Out
FLAG -304 -208 0
FLAG -64 80 OPV-
IOPIN -64 80 Out
SYMBOL voltage -304 80 R0
WINDOW 3 -55 154 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value SINE(2.5 2.5 1000)
SYMATTR InstName V1
SYMBOL voltage -208 -160 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 9
SYMBOL res 80 32 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R6
SYMATTR Value 1k
SYMBOL res 112 176 R0
SYMATTR InstName R3
SYMATTR Value 4.99k
SYMBOL Opamps\\UniversalOpamp -64 48 R0
SYMATTR InstName U2
SYMATTR SpiceModel level3a
SYMBOL nmos 80 -32 R0
SYMATTR InstName M1
SYMATTR Value FDS6680A
SYMBOL res 112 -160 R0
SYMATTR InstName R1
SYMATTR Value 2k
SYMBOL voltage -304 -224 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value 0
TEXT -296 -24 Left 0 !.tran 5m
TEXT 312 136 Left 0 ;www.discovercircuits.com/H-Corner/\n100ma%20current%20source.htm\n \nFet liegt außerhalb des Regelkreises,\ndaher eine schlechte Lösung.\n                Esko