Version 4
SHEET 1 1728 1024
WIRE -1280 -416 -1376 -416
WIRE -1184 -416 -1280 -416
WIRE -928 -416 -1184 -416
WIRE -768 -416 -928 -416
WIRE -928 -400 -928 -416
WIRE -1280 -384 -1280 -416
WIRE -1376 -368 -1376 -416
WIRE -1120 -304 -1232 -304
WIRE -1088 -304 -1120 -304
WIRE -928 -304 -928 -320
WIRE -928 -304 -1008 -304
WIRE -1120 -288 -1120 -304
WIRE -768 -272 -768 -416
WIRE -1184 -240 -1184 -416
WIRE -1232 -224 -1232 -304
WIRE -1216 -224 -1232 -224
WIRE -928 -224 -928 -304
WIRE -1120 -208 -1120 -224
WIRE -1120 -208 -1152 -208
WIRE -1088 -208 -1120 -208
WIRE -976 -208 -1008 -208
WIRE -1472 -192 -1504 -192
WIRE -1280 -192 -1280 -304
WIRE -1280 -192 -1408 -192
WIRE -1216 -192 -1280 -192
WIRE -1376 -144 -1376 -288
WIRE -1184 -144 -1184 -176
WIRE -1184 -144 -1376 -144
WIRE -928 -112 -928 -128
WIRE -880 -112 -928 -112
WIRE -768 -112 -768 -192
WIRE -768 -112 -800 -112
WIRE -768 -64 -768 -112
WIRE -752 -64 -768 -64
WIRE -912 -16 -928 -16
WIRE -880 -16 -912 -16
WIRE -768 -16 -768 -64
WIRE -768 -16 -800 -16
WIRE -928 16 -928 -16
WIRE -1184 48 -1376 48
WIRE -1184 64 -1184 48
WIRE -1216 80 -1248 80
WIRE -768 80 -768 -16
WIRE -1120 96 -1152 96
WIRE -1088 96 -1120 96
WIRE -976 96 -1008 96
WIRE -1504 112 -1520 112
WIRE -1456 112 -1504 112
WIRE -1280 112 -1392 112
WIRE -1216 112 -1280 112
WIRE -1120 112 -1120 96
WIRE -1520 144 -1520 112
WIRE -1280 160 -1280 112
WIRE -1248 192 -1248 80
WIRE -1120 192 -1120 176
WIRE -1120 192 -1248 192
WIRE -1088 192 -1120 192
WIRE -928 192 -928 112
WIRE -928 192 -1008 192
WIRE -1376 208 -1376 48
WIRE -928 208 -928 192
WIRE -1520 304 -1520 224
WIRE -1376 304 -1376 288
WIRE -1376 304 -1520 304
WIRE -1280 304 -1280 240
WIRE -1280 304 -1376 304
WIRE -1184 304 -1184 128
WIRE -1184 304 -1280 304
WIRE -928 304 -928 288
WIRE -928 304 -1184 304
WIRE -768 304 -768 160
WIRE -768 304 -928 304
FLAG -912 -16 D
FLAG -752 -64 0
FLAG -1504 112 in
SYMBOL voltage -1376 192 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 -976 16 R0
SYMATTR InstName M1
SYMATTR Value IRFP240
SYMBOL Opamps\\opamp2 -1184 32 R0
WINDOW 3 19 -1 Left 2
SYMATTR Value LM358
SYMATTR InstName U1
SYMBOL cap -1136 112 R0
SYMATTR InstName C1
SYMATTR Value 1n
SYMBOL Misc\\EuropeanResistor -1104 208 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL Misc\\EuropeanResistor -912 304 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R2
SYMATTR Value .47
SYMBOL Misc\\EuropeanResistor -1104 112 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 100
SYMBOL voltage -1376 -384 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 V2
SYMBOL voltage -768 64 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 60
SYMBOL voltage -1520 128 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 -133 -80 Left 2
SYMATTR Value SINE(0 {Uin} 8k)
SYMATTR InstName V4
SYMBOL cap -1392 96 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 100n
SYMBOL Misc\\EuropeanResistor -1264 256 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R6
SYMATTR Value 1Meg
SYMBOL Opamps\\opamp2 -1184 -272 R0
WINDOW 3 23 102 Left 2
SYMATTR Value LM358
SYMATTR InstName U2
SYMBOL cap -1136 -224 M180
WINDOW 0 24 56 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName C3
SYMATTR Value 1n
SYMBOL Misc\\EuropeanResistor -1104 -320 M90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL Misc\\EuropeanResistor -912 -416 M0
SYMATTR InstName R7
SYMATTR Value .47
SYMBOL Misc\\EuropeanResistor -1104 -224 M90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 100
SYMBOL voltage -768 -288 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V5
SYMATTR Value 60
SYMBOL Misc\\EuropeanResistor -1264 -400 M0
SYMATTR InstName R9
SYMATTR Value 1Meg
SYMBOL cap -1472 -176 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C4
SYMATTR Value 100n
SYMBOL pmos -976 -128 M180
SYMATTR InstName M2
SYMATTR Value IRFP9240
SYMBOL Misc\\EuropeanResistor -896 -128 M90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 20
SYMBOL Misc\\EuropeanResistor -896 -32 M90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R10
SYMATTR Value 20
TEXT -1720 -240 Left 2 !.tran 0 1m 0 .1m
TEXT -1672 248 Left 2 !.lib LM358.lib
TEXT -1720 -336 Left 2 ;.step param R3 list 8 20
TEXT -1720 -312 Left 2 ;.meas Iout AVG I(R3)
TEXT -1728 -152 Left 2 ;.step param Uin .1 1 .5
TEXT -1720 -288 Left 2 ;.meas Pout avg (60V-V(D))*I(R3)
TEXT -1720 -192 Left 2 !.param Uin=.5
TEXT -872 24 Left 2 ;Speaker
TEXT -1672 272 Left 2 !.lib IRFP9240.lib
TEXT -1696 -96 Left 2 !.opt plotwinsize=0