Version 4
SHEET 1 1736 812
WIRE 416 -112 320 -112
WIRE 496 -112 416 -112
WIRE 320 -48 320 -112
WIRE 496 -16 496 -112
WIRE 320 128 320 32
WIRE 496 176 496 64
WIRE 496 176 368 176
WIRE 272 192 192 192
WIRE 288 432 288 240
WIRE -576 560 -608 560
WIRE -448 560 -480 560
WIRE -320 560 -352 560
WIRE -192 560 -224 560
WIRE -608 608 -608 560
WIRE -480 608 -480 560
WIRE -352 608 -352 560
WIRE -224 608 -224 560
WIRE -608 720 -608 688
WIRE -480 720 -480 688
WIRE -352 720 -352 688
WIRE -224 720 -224 688
FLAG -352 720 0
FLAG -320 560 +Ub3
FLAG -224 720 0
FLAG -192 560 -Ub4
FLAG -480 720 0
FLAG -448 560 +Ub2
FLAG -608 720 0
FLAG -576 560 +Ub1
FLAG 288 432 0
FLAG 192 192 -Ub4
FLAG 416 -112 +Ub2
SYMBOL voltage -352 592 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 355
SYMBOL voltage -224 592 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value -5
SYMBOL voltage -480 592 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V4
SYMATTR Value 150
SYMBOL voltage -608 592 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V5
SYMATTR Value 470
SYMBOL Misc\\tetrode 320 176 R0
SYMATTR InstName U1
SYMATTR Value EL34N
SYMBOL Misc\\EuropeanResistor 512 80 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R1
SYMATTR Value 22
SYMBOL Misc\\EuropeanResistor 336 48 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R2
SYMATTR Value 22
TEXT -352 -184 Left 2 !.inc Tubes.cir
TEXT -352 -160 Left 2 !.tran 0 0.02 0.016