Version 4
SHEET 1 880 680
WIRE 416 -112 240 -112
WIRE 576 -112 416 -112
WIRE 240 -48 240 -112
WIRE 416 -16 416 -112
WIRE 240 128 240 32
WIRE 304 128 240 128
WIRE 416 128 416 48
WIRE 416 128 384 128
WIRE 240 192 240 128
WIRE -64 240 -112 240
WIRE 96 240 16 240
WIRE 192 240 96 240
WIRE 96 336 96 240
WIRE 208 352 208 288
WIRE 576 352 576 -112
WIRE -112 368 -112 240
WIRE -112 512 -112 448
WIRE 96 512 96 416
WIRE 96 512 -112 512
WIRE 208 512 208 432
WIRE 208 512 96 512
WIRE 576 512 576 432
WIRE 576 512 208 512
WIRE 208 576 208 512
FLAG 208 576 0
FLAG 480 128 out
IOPIN 480 128 Out
SYMBOL Misc\\triode 240 240 R0
SYMATTR InstName U1
SYMATTR Value ECC82
SYMBOL voltage 576 336 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 24
SYMBOL voltage -112 352 M0
WINDOW 39 0 0 Left 2
WINDOW 3 24 44 Left 2
SYMATTR Value2 AC 1
SYMATTR InstName V3
SYMATTR Value SINE(0 0.62 1K)
SYMBOL res 80 320 R0
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL res 400 112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 220
SYMBOL current 240 -48 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I2
SYMATTR Value 340µ
SYMBOL cap 416 144 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C2
SYMATTR Value 1µ
SYMBOL res 192 336 R0
SYMATTR InstName R1
SYMATTR Value 2k2
SYMBOL res 32 224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 30k
SYMBOL cap 400 -16 R0
SYMATTR InstName C1
SYMATTR Value 180p
TEXT -120 168 Left 2 !.inc koren_tubes.cir
TEXT -120 136 Left 2 !.tran 0 10m 0m 50µ