Version 4
SHEET 1 1148 708
WIRE 144 -112 48 -112
WIRE 48 -80 48 -112
WIRE 0 -32 -80 -32
WIRE -80 0 -80 -32
WIRE 16 64 16 16
WIRE 144 64 144 -112
WIRE -320 96 -432 96
WIRE -240 96 -320 96
WIRE -80 96 -80 80
WIRE -80 96 -176 96
WIRE -80 112 -80 96
WIRE -432 128 -432 96
WIRE -320 128 -320 96
WIRE -432 240 -432 208
WIRE -320 240 -320 208
WIRE -320 240 -432 240
WIRE -240 240 -320 240
WIRE -208 240 -240 240
WIRE -80 240 -80 192
WIRE -80 240 -128 240
WIRE 16 240 16 144
WIRE 16 240 -80 240
WIRE 144 240 144 144
WIRE 144 240 128 240
WIRE -320 288 -320 240
WIRE -240 304 -240 240
WIRE -80 304 -80 240
WIRE 16 352 16 240
WIRE 144 352 144 240
WIRE -320 400 -320 368
WIRE -240 400 -320 400
WIRE -80 400 -80 384
WIRE -80 400 -176 400
WIRE -80 416 -80 400
WIRE -400 448 -432 448
WIRE 16 480 16 432
WIRE -432 496 -432 448
WIRE -80 528 -80 496
WIRE 0 528 -80 528
WIRE -432 608 -432 576
WIRE 48 608 48 576
WIRE 144 608 144 432
WIRE 144 608 48 608
FLAG -240 304 0
FLAG 128 240 +Ub3
FLAG -432 608 0
FLAG -400 448 +Ub3
FLAG 48 -112 au1
FLAG 48 608 au2
SYMBOL Misc\\triode 48 -32 R0
SYMATTR InstName U1
SYMATTR Value ECC82
SYMBOL Misc\\triode 48 528 M180
SYMATTR InstName U2
SYMATTR Value ECC82
SYMBOL Misc\\EuropeanResistor 0 48 R0
SYMATTR InstName R1
SYMATTR Value 1K
SYMBOL Misc\\EuropeanResistor 0 336 R0
SYMATTR InstName R2
SYMATTR Value 1K
SYMBOL Misc\\EuropeanResistor -112 224 R90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 47K
SYMBOL Misc\\EuropeanResistor -96 -16 R0
SYMATTR InstName R4
SYMATTR Value 22K
SYMBOL Misc\\EuropeanResistor -96 96 R0
SYMATTR InstName R5
SYMATTR Value 5.1K
SYMBOL Misc\\EuropeanResistor -336 112 R0
SYMATTR InstName R6
SYMATTR Value 470K
SYMBOL cap -176 80 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 47µ
SYMBOL Misc\\EuropeanResistor -336 272 R0
SYMATTR InstName R7
SYMATTR Value 100
SYMBOL Misc\\EuropeanResistor -96 288 R0
SYMATTR InstName R8
SYMATTR Value 5.1K
SYMBOL Misc\\EuropeanResistor -96 400 R0
SYMATTR InstName R9
SYMATTR Value 22K
SYMBOL cap -176 384 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 47µ
SYMBOL Misc\\EuropeanResistor 128 48 R0
SYMATTR InstName R10
SYMATTR Value 43K
SYMBOL Misc\\EuropeanResistor 128 336 R0
SYMATTR InstName R11
SYMATTR Value 43K
SYMBOL voltage -432 480 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 355
SYMBOL voltage -432 112 R0
WINDOW 3 -59 160 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value SINE(0 0.2 1K)
TEXT -296 664 Left 2 !.inc Koren_Tubes.cir
TEXT -300 692 Left 2 !.tran 0.02
TEXT -336 408 Left 2 ;fb
TEXT -200 280 Left 2 ;long tail