Version 4 SHEET 1 880 680 WIRE -576 -224 -800 -224 WIRE -528 -224 -576 -224 WIRE -304 -224 -448 -224 WIRE -192 -224 -304 -224 WIRE -144 -224 -192 -224 WIRE -32 -224 -64 -224 WIRE 16 -224 -32 -224 WIRE 48 -224 16 -224 WIRE 176 -224 128 -224 WIRE 640 -224 176 -224 WIRE -576 -192 -576 -224 WIRE -192 -192 -192 -224 WIRE -32 -192 -32 -224 WIRE 16 -144 16 -224 WIRE 32 -144 16 -144 WIRE 400 -144 240 -144 WIRE 480 -144 400 -144 WIRE -576 -96 -576 -128 WIRE -192 -96 -192 -128 WIRE -32 -96 -32 -128 WIRE 176 -96 176 -224 WIRE 240 -96 240 -144 WIRE 400 -96 400 -144 WIRE -800 -80 -800 -224 WIRE -304 -80 -304 -224 WIRE 240 32 240 -16 WIRE 336 32 240 32 WIRE 400 32 400 -16 WIRE 400 32 336 32 WIRE -800 48 -800 0 WIRE -704 48 -800 48 WIRE -448 48 -640 48 WIRE -304 64 -304 0 WIRE -160 64 -304 64 WIRE 0 64 -96 64 WIRE 336 80 336 32 WIRE -800 112 -800 48 WIRE -304 112 -304 64 WIRE 176 112 176 -16 WIRE 640 144 640 -224 WIRE -1216 160 -1296 160 WIRE -1072 160 -1136 160 WIRE -960 160 -1008 160 WIRE -848 160 -960 160 WIRE -448 160 -448 48 WIRE -352 160 -448 160 WIRE 336 160 224 160 WIRE 0 176 0 64 WIRE 128 176 0 176 WIRE -960 224 -960 160 WIRE -736 224 -752 224 WIRE -640 224 -656 224 WIRE -1296 240 -1296 160 WIRE -448 240 -448 160 WIRE 0 240 0 176 WIRE -832 256 -832 208 WIRE -752 256 -752 224 WIRE -752 256 -832 256 WIRE -640 256 -640 224 WIRE -608 256 -640 256 WIRE 144 288 144 224 WIRE -832 304 -832 256 WIRE -752 304 -752 256 WIRE -720 304 -752 304 WIRE -640 304 -640 256 WIRE -640 304 -656 304 WIRE -336 304 -336 208 WIRE 640 352 640 224 WIRE 640 352 592 352 WIRE 592 368 592 352 WIRE -1296 400 -1296 320 WIRE -960 400 -960 304 WIRE -960 400 -1296 400 WIRE -832 400 -832 384 WIRE -832 400 -960 400 WIRE -448 400 -448 320 WIRE -448 400 -832 400 WIRE -336 400 -336 384 WIRE -336 400 -448 400 WIRE 0 400 0 320 WIRE 0 400 -336 400 WIRE 144 400 144 368 WIRE 144 400 0 400 WIRE 640 400 640 352 WIRE 640 400 144 400 FLAG 592 368 0 FLAG -32 -96 0 FLAG 32 -144 HT2 IOPIN 32 -144 Out FLAG 336 160 HT2 IOPIN 336 160 In FLAG -192 -96 0 FLAG 480 -144 NFB IOPIN 480 -144 Out FLAG -608 256 NFB IOPIN -608 256 In FLAG 336 80 0 FLAG -576 -96 0 SYMBOL res 128 272 R0 SYMATTR InstName R1 SYMATTR Value 130 SYMBOL ind2 160 -112 R0 WINDOW 0 -40 39 Left 0 WINDOW 3 -63 67 Left 0 SYMATTR InstName L1 SYMATTR Value 150H SYMATTR Type ind SYMATTR SpiceLine Rser=120 Cpar=120p SYMBOL ind2 256 -112 M0 WINDOW 0 -38 38 Left 0 WINDOW 3 -71 66 Left 0 SYMATTR InstName L2 SYMATTR Value 0.23H SYMATTR Type ind SYMATTR SpiceLine Rser=0.7 SYMBOL res 384 -112 R0 SYMATTR InstName R2 SYMATTR Value 8 SYMBOL voltage 640 128 R0 WINDOW 123 0 0 Left 0 WINDOW 39 -86 124 Left 0 WINDOW 0 -45 -8 Left 0 WINDOW 3 -16 59 Left 0 SYMATTR SpiceLine Rser=160 SYMATTR InstName V1 SYMATTR Value 300 SYMBOL res 32 -208 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R3 SYMATTR Value 1K SYMBOL cap -48 -192 R0 SYMATTR InstName C2 SYMATTR Value 47µ SYMBOL res -16 224 R0 SYMATTR InstName R4 SYMATTR Value 470K SYMBOL cap -160 80 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName C3 SYMATTR Value 22n SYMBOL voltage -1296 224 R0 WINDOW 123 24 132 Left 0 WINDOW 39 0 0 Left 0 SYMATTR Value2 AC 1 0 SYMATTR InstName V2 SYMATTR Value SINE(0 0.03447 400) SYMBOL res -352 288 R0 SYMATTR InstName R5 SYMATTR Value 1.2K SYMBOL res -320 -96 R0 SYMATTR InstName R6 SYMATTR Value 100K SYMBOL res -160 -208 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R7 SYMATTR Value 10K SYMBOL cap -208 -192 R0 SYMATTR InstName C4 SYMATTR Value 10µ SYMBOL res -1232 176 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R8 SYMATTR Value 30K SYMBOL res -976 208 R0 SYMATTR InstName R9 SYMATTR Value 470K SYMBOL res -752 240 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R10 SYMATTR Value 160K SYMBOL res -848 288 R0 SYMATTR InstName R11 SYMATTR Value 1.2K SYMBOL res -816 -96 R0 SYMATTR InstName R12 SYMATTR Value 100K SYMBOL res -464 224 R0 SYMATTR InstName R13 SYMATTR Value 470K SYMBOL res -544 -208 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R14 SYMATTR Value 10K SYMBOL cap -592 -192 R0 SYMATTR InstName C5 SYMATTR Value 10µ SYMBOL cap -704 64 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName C6 SYMATTR Value 22n SYMBOL cap -656 288 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C7 SYMATTR Value 33p SYMBOL cap -1072 176 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName C1 SYMATTR Value 22n SYMBOL Valve\\triode -800 160 R0 WINDOW 0 64 -40 Left 0 WINDOW 38 124 -9 Center 0 SYMATTR InstName U1a SYMATTR SpiceModel NH12AX7 SYMBOL Valve\\triode -304 160 R0 WINDOW 0 64 -40 Left 0 WINDOW 38 124 -9 Center 0 SYMATTR InstName U1b SYMATTR SpiceModel NH12AX7 SYMBOL Valve\\Tetrode 176 160 R0 WINDOW 0 12 -68 Left 0 WINDOW 38 24 84 Center 0 SYMATTR InstName U2 SYMATTR SpiceModel 6BQ5RY TEXT 184 -168 Left 0 !K1 L1 L2 0.9999 TEXT -1136 -168 Left 0 !.tran 100m TEXT -1136 -200 Left 0 !;ac dec 50 1 1MEG