Version 4
SHEET 1 880 680
WIRE 720 -64 384 -64
WIRE 384 32 384 -64
WIRE 384 32 320 32
WIRE 432 32 384 32
WIRE 240 112 240 32
WIRE 336 112 240 112
WIRE 512 112 512 32
WIRE 512 112 416 112
WIRE 240 192 240 112
WIRE 512 192 512 112
WIRE 720 208 720 -64
WIRE 96 240 -112 240
WIRE 160 240 96 240
WIRE 192 240 160 240
WIRE 624 240 560 240
WIRE 656 240 624 240
WIRE 96 288 96 240
WIRE 624 288 624 240
WIRE 208 336 208 288
WIRE 208 352 208 336
WIRE 544 352 544 288
WIRE 544 352 208 352
WIRE -112 368 -112 240
WIRE 208 400 208 352
WIRE 96 512 96 368
WIRE 208 512 208 480
WIRE 208 512 96 512
WIRE 624 512 624 368
WIRE 624 512 208 512
WIRE 720 512 720 288
WIRE 720 512 624 512
WIRE -112 544 -112 448
WIRE 656 544 656 240
WIRE 656 544 -112 544
WIRE 208 576 208 512
FLAG 208 576 0
FLAG 208 336 k
FLAG 160 240 g
SYMBOL Misc\\triode 240 240 R0
SYMATTR InstName U1
SYMATTR Value ECC82
SYMBOL Misc\\EuropeanResistor 192 384 R0
SYMATTR InstName R1
SYMATTR Value 470
SYMBOL Misc\\EuropeanResistor 112 384 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R2
SYMATTR Value 100K
SYMBOL voltage 720 192 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 250
SYMBOL voltage -112 352 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value SINE(0 16 1K)
SYMBOL Misc\\triode 512 240 M0
SYMATTR InstName U2
SYMATTR Value ECC82
SYMBOL ind2 224 48 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 10
SYMATTR Type ind
SYMBOL ind2 416 48 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L2
SYMATTR Value 10
SYMATTR Type ind
SYMBOL res 432 96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 20K
SYMBOL Misc\\EuropeanResistor 640 384 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R4
SYMATTR Value 100K
TEXT -200 560 Left 2 !.inc koren_tubes.cir
TEXT -200 584 Left 2 !.tran 0 15m 10m 50µ
TEXT 536 56 Left 2 !K L1 L2 1