Version 4 SHEET 1 1880 692 WIRE -656 -176 -816 -176 WIRE -496 -176 -656 -176 WIRE 400 -176 112 -176 WIRE -816 -144 -816 -176 WIRE -656 -144 -656 -176 WIRE -496 -144 -496 -176 WIRE 112 -96 112 -176 WIRE 400 -48 400 -176 WIRE 400 -48 240 -48 WIRE -496 -32 -496 -64 WIRE -240 -32 -496 -32 WIRE -128 -32 -176 -32 WIRE -16 -32 -128 -32 WIRE 400 0 400 -48 WIRE -816 16 -816 -64 WIRE -288 16 -816 16 WIRE -128 32 -128 -32 WIRE 80 32 80 16 WIRE 80 32 -16 32 WIRE 160 32 80 32 WIRE 80 48 80 32 WIRE -16 64 -16 32 WIRE 576 80 576 0 WIRE 576 80 496 80 WIRE -352 128 -352 96 WIRE 496 128 496 80 WIRE 576 128 576 80 WIRE -128 160 -128 112 WIRE -128 160 -192 160 WIRE -16 160 -16 128 WIRE -16 160 -128 160 WIRE 80 160 80 128 WIRE 80 160 -16 160 WIRE 160 160 160 112 WIRE 160 160 80 160 WIRE 208 160 160 160 WIRE 400 160 400 80 WIRE 400 160 288 160 WIRE -816 192 -816 16 WIRE -496 192 -496 -32 WIRE 80 192 80 160 WIRE -128 208 -128 160 WIRE 160 208 160 160 WIRE -16 224 -16 160 WIRE -1040 240 -1104 240 WIRE -960 240 -976 240 WIRE -944 240 -960 240 WIRE -352 240 -352 208 WIRE -352 240 -368 240 WIRE 400 240 400 160 WIRE 496 240 496 208 WIRE 576 240 576 208 WIRE 576 240 496 240 WIRE 576 272 576 240 WIRE -848 304 -848 288 WIRE -656 304 -848 304 WIRE -592 304 -656 304 WIRE -464 304 -464 288 WIRE -464 304 -592 304 WIRE -352 304 -352 240 WIRE -16 304 -16 288 WIRE 80 304 80 272 WIRE 80 304 -16 304 WIRE 160 304 160 288 WIRE 160 304 80 304 WIRE 80 320 80 304 WIRE -1104 336 -1104 240 WIRE -960 336 -960 240 WIRE -288 368 -288 16 WIRE -240 368 -288 368 WIRE -128 368 -128 288 WIRE -128 368 -176 368 WIRE -16 368 -128 368 WIRE 400 384 400 320 WIRE 400 384 240 384 WIRE -656 400 -656 384 WIRE -592 400 -592 384 WIRE -592 400 -656 400 WIRE -1104 480 -1104 416 WIRE -960 480 -960 416 WIRE -960 480 -1104 480 WIRE -656 480 -960 480 WIRE -352 480 -352 384 WIRE -352 480 -656 480 WIRE 112 480 112 432 WIRE 400 480 400 384 WIRE 400 480 112 480 WIRE -960 512 -960 480 FLAG -960 512 0 FLAG 576 272 0 FLAG 576 0 out IOPIN 576 0 Out FLAG -192 160 0 FLAG -352 96 out IOPIN -352 96 In FLAG -656 -64 0 SYMBOL Misc\\triode -816 240 R0 WINDOW 3 -24 64 Invisible 2 WINDOW 0 8 -64 Invisible 2 SYMATTR Value "" SYMATTR InstName U1 SYMATTR SpiceModel ecc88 SYMBOL Misc\\triode -496 240 M0 WINDOW 0 8 -64 Invisible 2 SYMATTR InstName U2 SYMATTR Value "" SYMATTR SpiceModel ecc88 SYMBOL res -832 -160 R0 SYMATTR InstName R2 SYMATTR Value 33k SYMBOL res -512 -160 R0 SYMATTR InstName R3 SYMATTR Value 33k SYMBOL cap -176 -48 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 470n SYMBOL cap -176 352 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value 470n SYMBOL res -144 192 R0 SYMATTR InstName R5 SYMATTR Value 470k SYMBOL res -112 16 M0 SYMATTR InstName R6 SYMATTR Value 470k SYMBOL voltage -656 -160 R0 WINDOW 123 0 0 Left 2 WINDOW 39 24 44 Left 2 SYMATTR InstName V1 SYMATTR Value 225 SYMBOL voltage -1104 320 M0 WINDOW 123 -98 57 Left 2 WINDOW 39 0 0 Left 2 WINDOW 0 -53 7 Left 2 WINDOW 3 -106 188 Left 2 SYMATTR Value2 AC 1 SYMATTR InstName V2 SYMATTR Value SINE(0 2.5 1k) SYMBOL cap -976 224 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C6 SYMATTR Value 220n SYMBOL res -976 320 R0 SYMATTR InstName R7 SYMATTR Value 100k SYMBOL current -656 304 R0 WINDOW 3 -14 -34 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 WINDOW 0 -62 32 Left 2 SYMATTR Value 8m SYMATTR InstName I1 SYMBOL Misc\\tetrode 112 -48 R0 SYMATTR InstName U3 SYMATTR Value "" SYMATTR SpiceModel 6ca7 SYMBOL Misc\\tetrode 112 384 M180 SYMATTR InstName U4 SYMATTR Value "" SYMATTR SpiceModel 6ca7 SYMBOL cap -32 224 R0 SYMATTR InstName C7 SYMATTR Value 2200µ SYMBOL cap -32 64 R0 SYMATTR InstName C8 SYMATTR Value 2200µ SYMBOL res 80 -48 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R9 SYMATTR Value 4.7k SYMBOL res 80 352 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R10 SYMATTR Value 4.7k SYMBOL ind2 384 224 R0 SYMATTR InstName L2 SYMATTR Value 50 SYMATTR Type ind SYMATTR SpiceLine Rser=50 Cpar=3n SYMBOL ind2 384 -16 R0 SYMATTR InstName L1 SYMATTR Value 50 SYMATTR Type ind SYMATTR SpiceLine Rser=50 Cpar=3n SYMBOL ind2 480 224 M180 WINDOW 0 36 80 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName L3 SYMATTR Value .5 SYMATTR Type ind SYMATTR SpiceLine Rser=.1 SYMBOL voltage 304 160 R90 WINDOW 123 0 0 Left 2 WINDOW 39 24 44 Left 2 SYMATTR InstName V3 SYMATTR Value 250 SYMBOL res 256 -64 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R11 SYMATTR Value 10 SYMBOL res 256 368 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R12 SYMATTR Value 10 SYMBOL res 560 112 R0 SYMATTR InstName R13 SYMATTR Value 8 SYMBOL res -368 288 R0 SYMATTR InstName R4 SYMATTR Value 2k SYMBOL res -368 112 R0 SYMATTR InstName R14 SYMATTR Value 12k SYMBOL voltage -656 496 R180 WINDOW 0 39 84 Left 2 WINDOW 3 43 46 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V4 SYMATTR Value 15 SYMBOL current 80 48 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName I2 SYMATTR Value 35m SYMBOL current 80 272 M180 WINDOW 0 24 80 Left 2 WINDOW 3 24 0 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName I3 SYMATTR Value 35m SYMBOL res 144 16 R0 SYMATTR InstName R1 SYMATTR Value 1meg SYMBOL res 144 192 R0 WINDOW 0 42 51 Left 2 SYMATTR InstName R8 SYMATTR Value 1meg SYMBOL res -608 288 R0 WINDOW 0 50 80 Left 2 WINDOW 3 40 49 Left 2 SYMATTR InstName R15 SYMATTR Value 1meg SYMBOL res -352 224 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R16 SYMATTR Value 510 SYMBOL res -848 224 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R17 SYMATTR Value 510 TEXT -416 -120 Left 2 !.inc 6ca7.inc TEXT -1104 32 Left 2 !.tran 10m TEXT 464 280 VLeft 2 !K123 L1 L2 L3 .99975 TEXT -192 -120 Left 2 !.four 1k V(out) TEXT -416 -160 Left 2 !.inc ecc88.inc TEXT -792 144 Left 2 ;PCC88 TEXT 160 -128 Left 2 ;PL84 TEXT 168 448 Left 2 ;PL84 TEXT -592 144 Left 2 ;PCC88 TEXT -408 184 VLeft 2 ;~6dB GK TEXT -192 -160 Left 2 ;~5W (Triode) an 8 Ohm