Version 4
SHEET 1 1728 1024
WIRE -1104 -352 -1104 -368
WIRE -1568 -304 -1568 -320
WIRE -1104 -256 -1104 -272
WIRE -1568 -208 -1568 -224
WIRE -1376 -192 -1392 -192
WIRE -1264 -176 -1312 -176
WIRE -1248 -176 -1264 -176
WIRE -1152 -176 -1168 -176
WIRE -1664 -160 -1664 -176
WIRE -1376 -160 -1520 -160
WIRE -1264 -160 -1264 -176
WIRE -1344 -128 -1344 -144
WIRE -1392 -80 -1392 -192
WIRE -1264 -80 -1264 -96
WIRE -1264 -80 -1392 -80
WIRE -1232 -80 -1264 -80
WIRE -1104 -80 -1104 -160
WIRE -1104 -80 -1152 -80
WIRE -1104 -64 -1104 -80
WIRE -1664 -48 -1664 -80
WIRE -1568 -48 -1568 -128
WIRE -1104 32 -1104 16
FLAG -1664 -48 0
FLAG -1664 -176 12V
FLAG -1344 -208 12V
FLAG -1568 -320 12V
FLAG -1104 32 0
FLAG -1344 -128 0
FLAG -1568 -48 0
FLAG -1104 -368 12V
SYMBOL voltage -1664 -176 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 -55 87 Left 2
WINDOW 0 -54 24 Left 2
SYMATTR Value 12
SYMATTR InstName V1
SYMBOL nmos -1152 -256 R0
SYMATTR InstName M1
SYMATTR Value IRF530N
SYMATTR Prefix X
SYMBOL Opamps\\opamp2 -1344 -240 R0
SYMATTR InstName U1
SYMATTR Value LM358
SYMBOL cap -1280 -160 R0
SYMATTR InstName C1
SYMATTR Value 1n
SYMBOL Misc\\EuropeanResistor -1248 -64 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL Misc\\EuropeanResistor -1088 32 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R2
SYMATTR Value .1
SYMBOL Misc\\EuropeanResistor -1088 -256 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R3
SYMATTR Value 10
SYMBOL Misc\\EuropeanResistor -1264 -160 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 100
SYMBOL potentiometer_standard -1584 -224 R0
WINDOW 39 38 112 Invisible 2
SYMATTR SpiceLine ""
SYMATTR InstName U2
SYMATTR Value Rtot=1K wiper={wip}
SYMBOL Misc\\EuropeanResistor -1552 -208 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R5
SYMATTR Value 100k
TEXT -1488 -72 Left 2 !.tran 0 4 0 .1
TEXT -1528 -16 Left 2 !.inc IRF530N.sub
TEXT -1528 0 Left 2 !.lib LM358.lib
TEXT -1528 -32 Left 2 !.lib potentiometer_standard.lib
TEXT -1552 -96 Left 2 !.step param wip 0 1 .1
TEXT -1456 -344 Left 2 !.meas Iout AVG -I(R3)
TEXT -1456 -320 Left 2 ;View -> Spice Error Log\nRight-mouse-click -> Plot ...\n(Danke, Helmut) ;)