Version 4 SHEET 1 880 680 WIRE 144 -128 -16 -128 WIRE -16 -96 -16 -128 WIRE 144 -96 144 -128 WIRE -16 16 -16 -16 WIRE 144 32 144 -16 WIRE 240 32 144 32 WIRE 288 32 240 32 WIRE 240 64 240 32 WIRE 144 112 144 32 WIRE 240 176 240 144 WIRE 240 176 192 176 WIRE -144 192 -240 192 WIRE -16 192 -80 192 WIRE 96 192 -16 192 WIRE 112 288 112 240 WIRE 192 288 112 288 WIRE -240 320 -240 192 WIRE -16 320 -16 192 WIRE 112 320 112 288 WIRE 192 320 192 288 WIRE -240 432 -240 400 WIRE -16 432 -16 400 WIRE 112 432 112 400 WIRE 192 432 192 384 FLAG 112 432 0 FLAG 192 432 0 FLAG -16 432 0 FLAG -16 16 0 FLAG -240 432 0 FLAG 288 32 out1 FLAG -240 192 in SYMBOL voltage -16 -112 R0 SYMATTR InstName V1 SYMATTR Value 400 SYMBOL Misc\\EuropeanResistor 96 304 R0 SYMATTR InstName R1 SYMATTR Value 1k SYMBOL polcap 176 320 R0 SYMATTR InstName C1 SYMATTR Value 100u SYMBOL Misc\\EuropeanResistor -32 304 R0 SYMATTR InstName R2 SYMATTR Value 1Meg SYMBOL Misc\\EuropeanResistor 128 -112 R0 SYMATTR InstName R3 SYMATTR Value 10k SYMBOL voltage -240 304 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value SINE(0 1 1k) SYMBOL cap -144 208 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C2 SYMATTR Value 1u SYMBOL Misc\\EuropeanResistor 224 48 R0 SYMATTR InstName R4 SYMATTR Value 500 SYMBOL pentode4 144 176 R0 SYMATTR InstName U1 SYMATTR Value EL509 TEXT -280 -232 Left 2 !.tran 10m TEXT -280 -208 Left 2 !.options plotwinsize=0 TEXT 56 -240 Left 2 !.inc EL509.sub