Version 4
SHEET 1 5052 1828
WIRE 1184 -560 896 -560
WIRE 1632 -560 1184 -560
WIRE 1184 -528 1184 -560
WIRE 896 -512 896 -560
WIRE 1632 -464 1632 -560
WIRE 1312 -448 1232 -448
WIRE 1312 -400 1312 -448
WIRE 896 -384 896 -432
WIRE 1184 -384 1184 -432
WIRE 1136 -304 1040 -304
WIRE 1632 -304 1632 -384
WIRE 1184 -272 1184 -288
WIRE 1312 -272 1312 -320
WIRE 1312 -272 1184 -272
WIRE 1840 -224 1680 -224
WIRE 1040 -208 1040 -304
WIRE 1184 -208 1184 -272
WIRE 1632 -176 1632 -208
WIRE 1728 -176 1632 -176
WIRE 1840 -160 1840 -224
WIRE 1632 -128 1632 -176
WIRE 1728 -96 1728 -176
WIRE 1040 -64 1040 -128
WIRE 1184 -64 1184 -128
WIRE 1184 -64 1040 -64
WIRE 1216 -64 1184 -64
WIRE 1328 -64 1296 -64
WIRE 1344 -64 1328 -64
WIRE 1440 -64 1424 -64
WIRE 1584 -64 1440 -64
WIRE 1184 0 1184 -64
WIRE 1440 16 1440 -64
WIRE 1504 16 1440 16
WIRE 1632 16 1632 -32
WIRE 1632 16 1568 16
WIRE 1728 16 1728 -32
WIRE 1728 16 1632 16
WIRE 1840 16 1840 -80
WIRE 1840 16 1728 16
WIRE 1936 16 1840 16
WIRE 2064 16 2000 16
WIRE 2144 16 2064 16
WIRE 2208 16 2144 16
WIRE 1632 48 1632 16
WIRE 2144 48 2144 16
WIRE 1328 64 1328 -64
WIRE 2064 64 2064 16
WIRE 1184 128 1184 80
WIRE 2064 160 2064 128
WIRE 2144 160 2144 128
WIRE 2144 160 2064 160
WIRE 1328 176 1328 128
WIRE 1632 176 1632 128
WIRE 1632 176 1328 176
WIRE 2064 208 2064 160
WIRE 1632 240 1632 176
WIRE 1360 288 1280 288
WIRE 1488 288 1424 288
WIRE 1536 288 1488 288
WIRE 1584 288 1536 288
WIRE 1280 336 1280 288
WIRE 1488 336 1488 288
WIRE 1488 464 1488 416
WIRE 1280 576 1280 416
WIRE 1488 576 1488 544
WIRE 1488 576 1280 576
WIRE 1600 576 1600 336
WIRE 1600 576 1488 576
WIRE 1488 624 1488 576
FLAG 1536 288 IN
FLAG 1488 624 0
FLAG 896 -384 0
FLAG 2208 16 OUT
IOPIN 2208 16 Out
FLAG 1184 128 0
FLAG 2064 208 0
DATAFLAG 1632 -176 "round($)"
DATAFLAG 1040 -64 "round($)"
DATAFLAG 1840 16 "round($)"
DATAFLAG 1632 176 "Ix(U1:Plate)"
SYMBOL res 1472 320 R0
SYMATTR InstName R2
SYMATTR Value 680K
SYMBOL res 2128 32 R0
SYMATTR InstName R10
SYMATTR Value 100K
SYMBOL voltage 1280 320 R0
WINDOW 3 -91 102 Left 2
SYMATTR Value SINE(0 {amp} {freq})
SYMATTR Value2 AC 1 0
SYMATTR InstName V2
SYMBOL voltage 896 -528 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 180
SYMBOL nmos 1232 -528 M0
SYMATTR InstName M1
SYMATTR Value LND150_
SYMBOL nmos 1136 -384 R0
SYMATTR InstName M2
SYMATTR Value LND150_
SYMBOL res 1296 -416 R0
SYMATTR InstName R1
SYMATTR Value 1K
SYMBOL res 1168 -224 R0
SYMATTR InstName R3
SYMATTR Value {5K_POT}
SYMBOL res 1024 -224 R0
SYMATTR InstName R4
SYMATTR Value 1K
SYMBOL res 1168 -16 R0
SYMATTR InstName R5
SYMATTR Value 220K
SYMBOL res 1312 -80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 10Meg
SYMBOL res 1824 -176 R0
SYMATTR InstName R11
SYMATTR Value 1K
SYMBOL res 1616 32 R0
SYMATTR InstName R12
SYMATTR Value 470
SYMBOL zener 1568 0 R90
WINDOW 0 -4 32 VBottom 2
WINDOW 3 36 32 VTop 2
SYMATTR InstName D2
SYMATTR Value BZX84C15L
SYMBOL cap 1312 64 R0
SYMATTR InstName C1
SYMATTR Value 100n
SYMBOL zener 1712 -32 M180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D3
SYMATTR Value BZX84C15L
SYMBOL njf 1584 -128 R0
SYMATTR InstName J1
SYMATTR Value J310
SYMBOL nmos 1680 -304 M0
SYMATTR InstName M3
SYMATTR Value DN2540
SYMBOL Misc\\triode 1632 288 R0
SYMATTR InstName U1
SYMATTR Value 27
SYMBOL cap 1424 272 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 150n
SYMBOL cap 2000 0 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C6
SYMATTR Value 0.22µ
SYMBOL cap 2048 64 R0
SYMATTR InstName C8
SYMATTR Value 100p
SYMBOL res 1616 -480 R0
SYMATTR InstName R8
SYMATTR Value 3.9K
SYMBOL voltage 1488 560 R180
WINDOW 0 24 96 Left 2
WINDOW 3 24 16 Left 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value 9
SYMBOL res 1440 -80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 330
TEXT 896 512 Left 2 !;.options noopiter\n.options plotwinsize=0:FFT\n.options numdgt=7 \n \n.param amp=1\n.param freq=1000\n.param fft_wait_cycles=10\n.param fft_cycles=10\n.param fft_points=2**18\n.param fft_stepmax=fft_cycles/freq/fft_points\n;\n.tran 0 {(fft_cycles+fft_wait_cycles)*1/freq} {fft_wait_cycles*1/freq} {fft_stepmax}\n.four {freq} 9 {fft_cycles} V(out)\n;.ac oct 10m 1 1000k\n.meas tran poweroutput avg i(r10)*v(out)\n \n.inc korentube.inc
TEXT 1608 392 Left 2 !.inc 27.inc
TEXT 1616 1064 Left 2 !*VDMOS (c) Copyright Ian Hegglun Jul 2019 \n.model LND150h VDMOS (Rg=100 Vto=-1.4 Lambda=0m Rs=70 Kp=3m Ksubthres=95m \n+ Mtriode=0.6 Rd=300 Bex=-2 Vtotc=-5m Tksubthres1=3m Trs1=2.6m Trd1=3m \n+ Cgdmax=5p Cgdmin=3p a=0.3 Cgs=3p Cjo=15p m=0.7 VJ=0.75 IS=15p N=1.5 EG=1.1 \n+ Rb=100 Vds=400 Ron=600 mfg=IHKT1911) ;LT-XVII
TEXT 1200 -224 Left 2 !.param 5K_POT = 1.5K
TEXT 1800 544 Left 2 !.MODEL DN2540 NMOS (LEVEL=3 RS=1.05 NSUB=5.0E14 DELTA=0.1 \n+ KAPPA=0.20 TPG=1 CGDO=3.1716E-10 RD=11 VTO=-1.50 VMAX=1.0E7 \n+ ETA=0.0223089 NFS=6.6E10 TOX=725E-10 LD=1.698E-9 UO=862.425 \n+ XJ=6.4666E-7 THETA=1.0E-5 CGSO=2.50E-9 L=4.0E-6 W=59E-3)
TEXT 888 1008 Left 2 !*LND150 MODEL\n*\n.MODEL LND150 NMOS (LEVEL=3 RS=150.00 NSUB=5.0E13\n+DELTA=0.1 KAPPA=1.O TPG=1 CGDO=2.1716E-12\n+RD=40.0 VTO=-2.0 VMAX=1.0E8 ETA=0.1\n+NFS=6.6E10 TOX=1.0E-7 LD=1.698E-9 UO=862.425\n+XJ=6.4666E-7 THETA=1.0E-5 CGSO=5.09E-10 L=10.0E-6\n+W=600E-6)\n*.ENDS
TEXT 1800 344 Left 2 !*VDMOS (c) Copyright Ian Hegglun Jul 2019 \n.model LND150_ VDMOS (Rg=100 Vto={-1.4-(5m-1m)*(Temp-25)} Lambda=0m\n+ Rs={70*(1+2.6m*(Temp-25))} Kp={3m*((Temp+273)/(273+25))**-(2-1.5)}\n+ Ksubthres={0.095*(1+3m*(Temp-25))} Mtriode=0.6 Rd={300*(1+3m*(Temp-25))}\n+ Cgdmax=5p Cgdmin=3p a=0.3 Cgs=3p Cjo=15p m=0.7 VJ=0.75\n+ IS=15p  N=1.5  EG=1.1 Rb=100 Vds=400 Ron=600 mfg=IH1911)
TEXT 1944 -544 Left 2 ;Gyrator by Ale Moglia\nhttps://www.bartola.co.uk/valves/2016/04/23/27-preamp/
RECTANGLE Normal 1920 208 976 -576 2