Version 4
SHEET 1 880 680
WIRE 464 -160 256 -160
WIRE 704 -160 464 -160
WIRE 256 -96 256 -160
WIRE 464 -32 464 -160
WIRE 256 16 256 -16
WIRE 416 16 256 16
WIRE 256 48 256 16
WIRE 256 96 256 48
WIRE 64 144 -32 144
WIRE 208 144 64 144
WIRE 64 176 64 144
WIRE 432 192 432 64
WIRE 224 256 224 192
WIRE 432 272 432 192
WIRE 432 272 336 272
WIRE 64 288 64 256
WIRE 224 304 224 256
WIRE 432 304 432 272
WIRE 336 320 336 272
WIRE 704 336 704 -160
WIRE 64 448 64 368
WIRE 224 448 224 384
WIRE 224 448 64 448
WIRE 432 448 432 384
WIRE 432 448 224 448
WIRE 704 448 704 416
WIRE 704 448 432 448
WIRE 224 464 224 448
WIRE -32 544 -32 144
WIRE 128 544 -32 544
WIRE 336 544 336 384
WIRE 336 544 208 544
WIRE -32 624 -32 544
WIRE 128 624 -32 624
WIRE 336 624 336 544
WIRE 336 624 192 624
FLAG 224 464 0
FLAG 256 48 u1a
FLAG 432 192 u2k
FLAG 224 256 u1k
SYMBOL Misc\\triode 256 144 R0
SYMATTR InstName U1
SYMATTR Value ECC88
SYMBOL Misc\\EuropeanResistor 240 -112 R0
SYMATTR InstName R1
SYMATTR Value 22K
SYMBOL Misc\\EuropeanResistor 208 288 R0
SYMATTR InstName R2
SYMATTR Value 120
SYMBOL voltage 704 320 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 250
SYMBOL Misc\\triode 464 16 R0
SYMATTR InstName U2
SYMATTR Value ECC88
SYMBOL Misc\\EuropeanResistor 416 288 R0
SYMATTR InstName R3
SYMATTR Value 10K
SYMBOL voltage 64 272 R0
WINDOW 3 -36 202 Left 2
WINDOW 123 -36 230 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value SINE(0 50m 1K)
SYMATTR Value2 AC 45m
SYMBOL Misc\\EuropeanResistor 48 160 R0
SYMATTR InstName R4
SYMATTR Value 27K
SYMBOL cap 320 320 R0
SYMATTR InstName C1
SYMATTR Value 4.7n
SYMBOL Misc\\EuropeanResistor 224 528 R90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 68K
SYMBOL cap 192 608 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 1n
TEXT -296 592 Left 2 !.inc Koren_Tubes.cir
TEXT -298 628 Left 2 !.ac oct 100 10 30K