Version 4 SHEET 1 1212 840 WIRE -320 -192 -496 -192 WIRE -272 -192 -320 -192 WIRE -128 -192 -192 -192 WIRE 80 -192 -128 -192 WIRE 128 -192 80 -192 WIRE 288 -192 288 -224 WIRE 288 -192 208 -192 WIRE 336 -192 288 -192 WIRE 448 -192 416 -192 WIRE 880 -192 448 -192 WIRE -320 -160 -320 -192 WIRE 80 -160 80 -192 WIRE 288 -160 288 -192 WIRE -128 -144 -128 -192 WIRE -496 -64 -496 -192 WIRE -320 -64 -320 -96 WIRE 80 -64 80 -96 WIRE 288 -64 288 -96 WIRE -496 48 -496 16 WIRE -496 48 -624 48 WIRE -128 64 -128 -64 WIRE -64 64 -128 64 WIRE 80 64 0 64 WIRE 288 64 80 64 WIRE 512 64 512 32 WIRE -624 80 -624 48 WIRE 288 112 288 64 WIRE 80 128 80 64 WIRE 240 128 224 128 WIRE -128 144 -128 64 WIRE 512 160 512 128 WIRE 512 160 352 160 WIRE -624 176 -624 144 WIRE 736 176 656 176 WIRE -496 192 -496 48 WIRE -416 192 -496 192 WIRE -272 192 -352 192 WIRE -176 192 -272 192 WIRE 656 208 656 176 WIRE 656 208 592 208 WIRE 704 208 656 208 WIRE -496 224 -496 192 WIRE 592 224 592 208 WIRE 704 224 704 208 WIRE -736 272 -864 272 WIRE -656 272 -672 272 WIRE -544 272 -656 272 WIRE -160 272 -160 240 WIRE -64 272 -160 272 WIRE 80 272 80 208 WIRE 128 272 80 272 WIRE 304 272 304 208 WIRE 336 272 304 272 WIRE 448 272 448 -192 WIRE 512 272 512 240 WIRE 512 272 448 272 WIRE -272 288 -272 192 WIRE -160 288 -160 272 WIRE -64 288 -64 272 WIRE 512 304 512 272 WIRE 592 320 592 304 WIRE 640 320 592 320 WIRE 704 320 704 304 WIRE 704 320 640 320 WIRE 80 336 80 272 WIRE 304 336 304 272 WIRE 640 336 640 320 WIRE 880 352 880 -192 WIRE 1072 352 1072 304 WIRE -656 368 -656 272 WIRE 512 384 352 384 WIRE -864 400 -864 272 WIRE -528 400 -528 320 WIRE -416 400 -528 400 WIRE -160 400 -160 368 WIRE -64 400 -64 352 WIRE -64 400 -160 400 WIRE 240 416 224 416 WIRE 512 416 512 384 WIRE -272 432 -272 368 WIRE -160 432 -160 400 WIRE -160 432 -272 432 WIRE -528 464 -528 400 WIRE -416 480 -416 400 WIRE -160 480 -160 432 WIRE -64 480 -160 480 WIRE 80 480 80 416 WIRE 80 480 0 480 WIRE 288 480 288 432 WIRE 288 480 80 480 WIRE -160 512 -160 480 WIRE 512 512 512 480 WIRE -864 624 -864 480 WIRE -656 624 -656 448 WIRE -656 624 -864 624 WIRE -528 624 -528 544 WIRE -528 624 -656 624 WIRE -416 624 -416 544 WIRE -416 624 -528 624 WIRE -160 624 -160 592 WIRE -160 624 -416 624 WIRE 464 624 -160 624 WIRE 880 624 880 432 WIRE 880 624 464 624 WIRE 1072 624 1072 432 WIRE 1072 624 880 624 WIRE 464 656 464 624 FLAG 336 272 HT2 IOPIN 336 272 In FLAG 640 336 0 FLAG 224 128 0 FLAG 224 416 0 FLAG 288 -64 0 FLAG 288 -224 HT2 IOPIN 288 -224 Out FLAG 1072 304 BIAS IOPIN 1072 304 Out FLAG 736 176 LOAD IOPIN 736 176 Out FLAG 128 272 BIAS IOPIN 128 272 In FLAG 80 -64 0 FLAG 464 656 0 FLAG -320 -64 0 FLAG -624 176 0 FLAG 512 512 0 FLAG 512 32 0 SYMBOL ind2 496 144 R0 WINDOW 0 -36 53 Left 0 WINDOW 3 -38 75 Left 0 SYMATTR InstName L1 SYMATTR Value 50H SYMATTR Type ind SYMATTR SpiceLine Rser=61 Cpar=240p SYMBOL ind2 496 288 R0 WINDOW 0 -37 41 Left 0 WINDOW 3 -37 66 Left 0 SYMATTR InstName L2 SYMATTR Value 50H SYMATTR Type ind SYMATTR SpiceLine Rser=64 Cpar=240p SYMBOL ind2 608 320 R180 WINDOW 0 -32 67 Left 0 WINDOW 3 -67 42 Left 0 SYMATTR InstName L3 SYMATTR Value 0.47H SYMATTR Type ind SYMATTR SpiceLine Rser=0.7 SYMBOL res 688 208 R0 SYMATTR InstName R1 SYMATTR Value 8 SYMBOL voltage 880 336 R0 WINDOW 0 38 66 Left 0 WINDOW 123 0 0 Left 0 WINDOW 39 24 132 Left 0 SYMATTR InstName VHT SYMATTR SpiceLine Rser=125 SYMATTR Value 450V SYMBOL res 320 -176 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R2 SYMATTR Value 220 SYMBOL cap 272 -160 R0 SYMATTR InstName C1 SYMATTR Value 47µ SYMBOL voltage 1072 448 R180 WINDOW 0 -117 41 Left 0 WINDOW 3 -89 16 Left 0 WINDOW 123 0 0 Left 0 WINDOW 39 -136 -11 Left 0 SYMATTR InstName VBIAS SYMATTR Value 42V SYMATTR SpiceLine Rser=1000 SYMBOL res 64 112 R0 SYMATTR InstName R3 SYMATTR Value 100K SYMBOL res 64 320 R0 SYMATTR InstName R4 SYMATTR Value 100K SYMBOL res 112 -176 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R5 SYMATTR Value 10K SYMBOL cap 64 -160 R0 SYMATTR InstName C2 SYMATTR Value 47µ SYMBOL res -176 496 R0 SYMATTR InstName R6 SYMATTR Value 47K SYMBOL res -144 -160 R0 SYMATTR InstName R7 SYMATTR Value 47K SYMBOL res -176 272 R0 SYMATTR InstName R8 SYMATTR Value 1.2k SYMBOL cap -64 496 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName C3 SYMATTR Value 100n SYMBOL cap -64 80 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName C4 SYMATTR Value 100n SYMBOL res -288 272 R0 SYMATTR InstName R9 SYMATTR Value 470K SYMBOL res -512 -80 R0 SYMATTR InstName R10 SYMATTR Value 100K SYMBOL res -288 -176 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R11 SYMATTR Value 33k SYMBOL cap -336 -160 R0 SYMATTR InstName C5 SYMATTR Value 10µ SYMBOL res -544 448 R0 SYMATTR InstName R12 SYMATTR Value 820 SYMBOL cap -416 208 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName C6 SYMATTR Value 22n SYMBOL res -672 352 R0 SYMATTR InstName R13 SYMATTR Value 470K SYMBOL cap -736 288 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName C7 SYMATTR Value 22n SYMBOL voltage -864 384 R0 WINDOW 123 24 132 Left 0 WINDOW 39 0 0 Left 0 SYMATTR Value2 AC 1 0 SYMATTR InstName V1 SYMATTR Value SINE(0 .6 1k) SYMBOL cap -432 480 R0 SYMATTR InstName C8 SYMATTR Value 680n SYMBOL cap -640 80 R0 SYMATTR InstName C9 SYMATTR Value 1000p SYMBOL cap -80 288 R0 SYMATTR InstName C10 SYMATTR Value 220n SYMBOL cap 496 416 R0 SYMATTR InstName C11 SYMATTR Value 1000p SYMBOL cap 496 64 R0 WINDOW 0 54 2 Left 0 WINDOW 3 46 30 Left 0 SYMATTR InstName C12 SYMATTR Value 1000p SYMBOL Valve\\triode -496 272 R0 SYMATTR InstName V1a SYMATTR SpiceModel 12AX7 SYMBOL Valve\\triode -128 192 R0 SYMATTR InstName V1b SYMATTR SpiceModel 12AX7 SYMBOL Valve\\tetrode 304 384 M270 WINDOW 0 19 -55 VLeft 0 WINDOW 38 -68 -24 VCenter 0 SYMATTR InstName V3 SYMATTR SpiceModel EL34 SYMBOL Valve\\tetrode 304 160 R90 WINDOW 0 19 -55 VLeft 0 WINDOW 38 -68 -24 VCenter 0 SYMATTR InstName V2 SYMATTR SpiceModel EL34 TEXT 560 128 Left 0 !K1 L1 L2 L3 0.9995 TEXT -856 -144 Left 0 !.tran 5mS TEXT -856 -184 Left 0 !;op TEXT -856 -104 Left 0 !;ac dec 50 1 1MEG LINE Normal 544 384 544 160 LINE Normal 560 387 560 160