Version 4
SHEET 1 880 680
WIRE 336 -48 48 -48
WIRE 624 -48 432 -48
WIRE 656 -48 624 -48
WIRE 48 32 48 -48
WIRE 432 32 432 -48
WIRE 336 48 336 -48
WIRE 336 144 336 48
WIRE 416 192 384 192
WIRE 432 192 432 112
WIRE 432 192 416 192
WIRE 272 208 160 208
WIRE 288 208 272 208
WIRE 432 304 432 192
WIRE 48 320 48 112
WIRE 656 320 656 -48
WIRE 48 432 48 400
WIRE 160 432 160 208
WIRE 160 432 48 432
WIRE 304 432 304 256
WIRE 304 432 160 432
WIRE 432 432 432 368
WIRE 432 432 304 432
WIRE 656 432 656 400
WIRE 656 432 432 432
WIRE 304 464 304 432
FLAG 304 464 0
FLAG 272 208 g1
FLAG 336 48 a
FLAG 624 -48 Ub
FLAG 416 192 g2
SYMBOL voltage 656 304 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 310
SYMBOL cap 416 304 R0
SYMATTR InstName C4
SYMATTR Value 1n
SYMBOL Misc\\EuropeanResistor 416 16 R0
SYMATTR InstName R2
SYMATTR Value 100K
SYMBOL Misc\\tetrode 336 192 R0
SYMATTR InstName U1
SYMATTR Value SVEL509
SYMBOL voltage 48 416 R180
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 100V
SYMBOL Misc\\EuropeanResistor 32 16 R0
SYMATTR InstName R1
SYMATTR Value 4K7
TEXT 384 512 Left 2 !.tran 1
TEXT 384 472 Left 2 !.inc koren_tubes.cir