Version 4
SHEET 1 1728 1024
WIRE -2224 -624 -2224 -640
WIRE -2224 -528 -2224 -544
WIRE -2192 -528 -2224 -528
WIRE -2224 -512 -2224 -528
WIRE -2224 -416 -2224 -432
WIRE -1504 -272 -1520 -272
WIRE -1408 -272 -1424 -272
WIRE -1376 -272 -1408 -272
WIRE -2192 -256 -2224 -256
WIRE -1520 -240 -1520 -272
WIRE -1760 -192 -1760 -208
WIRE -1792 -176 -1840 -176
WIRE -1712 -160 -1728 -160
WIRE -1696 -160 -1712 -160
WIRE -1664 -160 -1696 -160
WIRE -1568 -160 -1584 -160
WIRE -2192 -144 -2192 -256
WIRE -2176 -144 -2192 -144
WIRE -2064 -144 -2096 -144
WIRE -1968 -144 -2000 -144
WIRE -1904 -144 -1968 -144
WIRE -1792 -144 -1904 -144
WIRE -1696 -112 -1696 -160
WIRE -2224 -80 -2224 -256
WIRE -1408 -80 -1408 -272
WIRE -1904 -64 -1904 -144
WIRE -1984 0 -1984 -32
WIRE -1840 0 -1840 -176
WIRE -1808 0 -1840 0
WIRE -1696 0 -1696 -48
WIRE -1696 0 -1808 0
WIRE -1664 0 -1696 0
WIRE -1520 0 -1520 -144
WIRE -1520 0 -1584 0
WIRE -2224 16 -2224 0
WIRE -1520 16 -1520 0
WIRE -1984 112 -1984 80
WIRE -1904 112 -1904 16
WIRE -1904 112 -1984 112
WIRE -1760 112 -1760 -128
WIRE -1760 112 -1904 112
WIRE -1520 112 -1520 96
WIRE -1520 112 -1760 112
WIRE -1440 112 -1520 112
WIRE -1408 112 -1408 0
WIRE -1408 112 -1440 112
WIRE -1408 128 -1408 112
FLAG -1520 -272 out
FLAG -1440 112 -Ub
FLAG -1984 -32 -48V
FLAG -1712 -160 Q
FLAG -1968 -144 in-n
FLAG -1408 128 0
FLAG -2224 16 0
FLAG -2192 -528 0
FLAG -2224 -640 +12V
FLAG -2224 -416 -12V
FLAG -1760 -208 -48V
FLAG -1808 0 inv
SYMBOL nmos -1568 -240 R0
SYMATTR InstName M1
SYMATTR Value IRFP240
SYMBOL cap -1712 -112 R0
SYMATTR InstName C1
SYMATTR Value 1n
SYMBOL Misc\\EuropeanResistor -1680 16 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 9.1k
SYMBOL Misc\\EuropeanResistor -1504 112 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R2
SYMATTR Value .75
SYMBOL Misc\\EuropeanResistor -1680 -144 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 100
SYMBOL voltage -1408 -96 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 60
SYMBOL Misc\\EuropeanResistor -1888 32 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R6
SYMATTR Value 1Meg
SYMBOL Misc\\EuropeanResistor -1520 -256 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R17
SYMATTR Value 20
SYMBOL voltage -1984 -16 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 cap -2064 -128 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C3
SYMATTR Value 100n
SYMBOL Opamps\\UniversalOpamp2 -1760 -160 R0
SYMATTR InstName U2
SYMBOL voltage -2224 -96 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 -50 151 Left 2
WINDOW 0 -48 22 Left 2
SYMATTR Value SINE(0 1.2 80)
SYMATTR InstName V6
SYMBOL Misc\\EuropeanResistor -2192 -128 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R3
SYMATTR Value 33k
SYMBOL voltage -2224 -528 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 -45 95 Left 2
WINDOW 0 -48 23 Left 2
SYMATTR Value 12
SYMATTR InstName V2
SYMBOL voltage -2224 -640 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 -47 93 Left 2
WINDOW 0 -48 22 Left 2
SYMATTR Value 12
SYMATTR InstName V7
TEXT -2176 -8 Left 2 !.lib IRFP9240.lib
TEXT -2176 -32 Left 2 !.opt plotwinsize=0
TEXT -2176 -80 Left 2 !.tran 0 25m 0 1m
TEXT -2176 -56 Left 2 ;.meas Io avg I(R17)