Version 4 SHEET 1 1320 812 WIRE 368 -64 80 -64 WIRE 736 -64 368 -64 WIRE 80 -32 80 -64 WIRE 368 -32 368 -64 WIRE 80 64 80 48 WIRE 112 64 80 64 WIRE 208 64 176 64 WIRE 368 64 368 48 WIRE 400 64 368 64 WIRE 480 64 464 64 WIRE 80 80 80 64 WIRE 368 80 368 64 WIRE 208 96 208 64 WIRE -48 128 -144 128 WIRE -16 128 -48 128 WIRE 32 128 -16 128 WIRE 320 128 272 128 WIRE 480 128 480 64 WIRE 560 128 480 128 WIRE -144 144 -144 128 WIRE 272 176 272 128 WIRE 272 176 208 176 WIRE 48 208 48 176 WIRE 112 208 48 208 WIRE 736 208 736 -64 WIRE 112 224 112 208 WIRE 336 224 336 176 WIRE 416 224 336 224 WIRE -144 240 -144 224 WIRE -48 240 -48 128 WIRE 48 240 48 208 WIRE 336 240 336 224 WIRE 416 240 416 224 WIRE 480 240 480 128 WIRE -144 352 -144 320 WIRE -48 352 -48 320 WIRE 48 352 48 320 WIRE 112 352 112 288 WIRE 208 352 208 256 WIRE 336 352 336 320 WIRE 416 352 416 304 WIRE 480 352 480 320 WIRE 736 352 736 288 FLAG -144 352 0 FLAG -48 352 0 FLAG 48 352 0 FLAG 336 352 0 FLAG 480 352 0 FLAG 112 352 0 FLAG 208 352 0 FLAG 736 352 0 FLAG 560 128 out FLAG 416 352 0 FLAG 272 128 gU2 FLAG 336 224 kU2 FLAG 368 64 aU2 FLAG 80 64 aU1 FLAG -16 128 gU1 SYMBOL Misc\\triode 80 128 R0 WINDOW 0 50 44 Left 2 SYMATTR InstName U1 SYMATTR Value 6SN7 SYMBOL Misc\\triode 368 128 R0 WINDOW 0 49 30 Left 2 SYMATTR InstName U2 SYMATTR Value 6SN7 SYMBOL res 64 -48 R0 WINDOW 3 35 75 Left 2 SYMATTR Value 47k SYMATTR InstName R1 SYMBOL res 352 -48 R0 SYMATTR InstName R2 SYMATTR Value 33k SYMBOL res 32 224 R0 SYMATTR InstName R3 SYMATTR Value 820 SYMBOL res 320 224 R0 SYMATTR InstName R4 SYMATTR Value 1K5 SYMBOL res -64 224 R0 SYMATTR InstName R5 SYMATTR Value 1e6 SYMBOL res -160 128 R0 WINDOW 0 36 40 Invisible 2 SYMATTR InstName Ri SYMATTR Value 10k SYMBOL cap 464 48 R90 WINDOW 0 0 32 Invisible 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C3 SYMATTR Value 470n SYMBOL voltage -144 224 R0 WINDOW 123 24 124 Left 2 WINDOW 39 0 0 Left 2 WINDOW 3 -173 88 Left 2 SYMATTR Value2 AC 1 SYMATTR Value SINE(0 0.5 1k) SYMATTR InstName V1 SYMBOL res 464 224 R0 SYMATTR InstName R9 SYMATTR Value 470k SYMBOL cap 96 224 R0 SYMATTR InstName C5 SYMATTR Value 100µ SYMBOL res 192 160 R0 WINDOW 0 36 40 Invisible 2 SYMATTR InstName R10 SYMATTR Value 56K SYMBOL cap 176 48 R90 WINDOW 0 7 1 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value 470n SYMBOL res 192 80 R0 WINDOW 0 -36 58 Left 2 SYMATTR InstName R6 SYMATTR Value 47K SYMBOL voltage 736 192 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value 300 SYMBOL cap 400 240 R0 SYMATTR InstName C1 SYMATTR Value 100µ TEXT -224 -120 Left 2 !.INC Koren_Tubes.inc TEXT -224 -88 Left 2 !.tran 0 200m 195m TEXT -224 -64 Left 2 !;ac oct 1000 10 22k TEXT 400 208 Left 2 ;5V8DC TEXT 112 192 Left 2 ;3V2DC TEXT 432 -80 Left 2 ;300VDC TEXT 256 32 Left 2 ;171VDC TEXT -40 32 Left 2 ;116VDC