Version 4
SHEET 1 1728 1024
WIRE -1616 -64 -1856 -64
WIRE -1072 -64 -1104 -64
WIRE -1056 -64 -1072 -64
WIRE -944 -64 -944 -128
WIRE -944 -64 -976 -64
WIRE -1856 -16 -1856 -64
WIRE -1504 -16 -1504 -32
WIRE -1536 0 -1552 0
WIRE -1856 16 -1856 -16
WIRE -1392 16 -1472 16
WIRE -1360 16 -1392 16
WIRE -1264 16 -1280 16
WIRE -1152 16 -1184 16
WIRE -944 16 -944 -64
WIRE -1616 32 -1616 -64
WIRE -1536 32 -1616 32
WIRE -1392 32 -1392 16
WIRE -1616 80 -1616 32
WIRE -1856 112 -1856 96
WIRE -1552 112 -1552 0
WIRE -1392 112 -1392 96
WIRE -1392 112 -1552 112
WIRE -1360 112 -1392 112
WIRE -1104 112 -1104 32
WIRE -1104 112 -1280 112
WIRE -1104 128 -1104 112
WIRE -1616 224 -1616 160
WIRE -1504 224 -1504 48
WIRE -1504 224 -1616 224
WIRE -1104 224 -1104 208
WIRE -1104 224 -1504 224
WIRE -1008 224 -1104 224
WIRE -976 224 -1008 224
WIRE -944 224 -944 96
WIRE -944 224 -976 224
WIRE -1008 256 -1008 224
FLAG -1072 -64 out-n
FLAG -1008 256 0
FLAG -1504 -32 -48V
FLAG -976 224 -Ub
FLAG -1856 -16 in
FLAG -1856 112 0
SYMBOL nmos -1152 -64 R0
SYMATTR InstName M1
SYMATTR Value IRFP240
SYMBOL Opamps\\opamp2 -1504 -48 R0
WINDOW 3 19 -1 Left 2
SYMATTR Value LM358
SYMATTR InstName U1
SYMBOL cap -1408 32 R0
SYMATTR InstName C1
SYMATTR Value 1n
SYMBOL Misc\\EuropeanResistor -1376 128 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value {R1}
SYMBOL Misc\\EuropeanResistor -1088 224 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R2
SYMATTR Value .47
SYMBOL Misc\\EuropeanResistor -1376 32 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 100
SYMBOL voltage -944 0 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 60
SYMBOL Misc\\EuropeanResistor -1600 176 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R6
SYMATTR Value 1Meg
SYMBOL Misc\\EuropeanResistor -1072 -48 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R17
SYMATTR Value 20
SYMBOL voltage -1856 0 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 37 8 Left 2
WINDOW 0 -65 20 Left 2
SYMATTR Value SINE(0 {Uin} 400)
SYMATTR InstName V2
SYMBOL voltage -1280 16 R270
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 52 111 VLeft 2
WINDOW 0 -54 57 VLeft 2
SYMATTR Value {Utol}
SYMATTR InstName V4
TEXT -1816 136 Left 2 !.lib LM358.lib
TEXT -1816 160 Left 2 !.lib IRFP9240.lib
TEXT -1816 112 Left 2 !.opt plotwinsize=0
TEXT -1808 64 Left 2 !.tran 0 35mm 25m 1m
TEXT -1816 32 Left 2 ;.param Uin 1.44
TEXT -1832 -168 Left 2 !.param Uin 0\n.step param Utol 0 2 .2\n.step param R1 list 39k 43k 47k\n.temp 15 75
TEXT -1608 -152 Left 2 !.meas Io avg I(R17)
TEXT -1304 168 Left 2 ;(43k)