Version 4 SHEET 1 880 680 WIRE 256 -64 48 -64 WIRE 48 -32 48 -64 WIRE 256 -32 256 -64 WIRE 48 80 48 48 WIRE 256 80 256 48 WIRE 320 80 256 80 WIRE 256 128 256 80 WIRE 128 176 48 176 WIRE 208 176 128 176 WIRE 48 224 48 176 WIRE 48 336 48 304 WIRE 224 336 224 224 WIRE 224 336 48 336 WIRE 48 352 48 336 FLAG 48 80 0 FLAG 48 352 0 FLAG 320 80 a FLAG 128 176 g SYMBOL Misc\\triode 256 176 R0 SYMATTR InstName U1 SYMATTR Value 354V SYMBOL voltage 48 -48 R0 SYMATTR InstName V1 SYMATTR Value {VA} SYMBOL voltage 48 208 R0 SYMATTR InstName VG SYMATTR Value -10 SYMBOL Misc\\EuropeanResistor 240 -48 R0 SYMATTR InstName R2 SYMATTR Value 1 TEXT 32 504 Left 2 !.inc 354V_LTspice.inc TEXT 32 424 Left 2 !.dc VG -10 0 0.1 TEXT 32 456 Left 2 !.step param VA 100 250 50