Version 4 SHEET 1 1524 680 WIRE -608 16 -752 16 WIRE -304 16 -608 16 WIRE -176 16 -304 16 WIRE 128 16 -176 16 WIRE -304 48 -304 16 WIRE -176 48 -176 16 WIRE -752 64 -752 16 WIRE -608 96 -608 16 WIRE 128 96 128 16 WIRE -320 144 -560 144 WIRE -304 144 -304 128 WIRE 80 144 -304 144 WIRE -752 160 -752 144 WIRE -320 160 -320 144 WIRE -176 160 -176 128 WIRE -176 160 -320 160 WIRE -304 192 -304 144 WIRE -176 192 -176 160 WIRE -576 240 -576 192 WIRE -576 240 -640 240 WIRE -464 240 -496 240 WIRE -384 240 -400 240 WIRE -352 240 -384 240 WIRE -96 240 -128 240 WIRE -80 240 -96 240 WIRE 0 240 -16 240 WIRE 96 240 96 192 WIRE 96 240 80 240 WIRE 160 240 96 240 WIRE -336 320 -336 288 WIRE -240 320 -336 320 WIRE -144 320 -144 288 WIRE -144 320 -240 320 WIRE -576 336 -576 240 WIRE -496 336 -496 240 WIRE -384 336 -384 240 WIRE -240 336 -240 320 WIRE -96 336 -96 240 WIRE 96 336 96 240 WIRE -496 352 -496 336 WIRE -576 448 -576 416 WIRE -496 448 -496 432 WIRE -384 448 -384 416 WIRE -240 448 -240 416 WIRE -96 448 -96 416 WIRE 96 448 96 416 FLAG -496 448 0 FLAG -496 336 in FLAG -240 448 0 FLAG -384 448 0 FLAG -752 160 0 FLAG 96 448 0 FLAG 160 240 out1 FLAG -96 448 0 FLAG -576 448 0 FLAG -640 240 out2 SYMBOL Misc\\signal -496 336 M0 WINDOW 123 74 127 Left 2 WINDOW 39 36 47 Left 2 WINDOW 3 -102 147 Left 2 WINDOW 0 -43 11 Left 2 SYMATTR Value SINE(0 1.2 1k 1) SYMATTR InstName V1 SYMBOL Misc\\triode -304 240 R0 WINDOW 3 9 62 Left 2 SYMATTR Value NH12AX7 SYMATTR InstName U2 SYMBOL res -256 320 R0 SYMATTR InstName R2 SYMATTR Value 1k8 SYMBOL res -368 320 M0 SYMATTR InstName R13 SYMATTR Value 470k SYMBOL cap -400 224 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C7 SYMATTR Value 100n SYMBOL voltage -752 48 M0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value 300 SYMBOL Misc\\triode -176 240 M0 WINDOW 3 -2 62 Invisible 2 SYMATTR Value NH12AX7 SYMATTR InstName U1 SYMBOL Misc\\triode 128 144 R0 WINDOW 3 -2 62 Left 2 SYMATTR Value NH12AU7 SYMATTR InstName U3 SYMBOL res 80 320 R0 SYMATTR InstName R6 SYMATTR Value 47k SYMBOL res -288 32 M0 SYMATTR InstName R3 SYMATTR Value 380k SYMBOL res -192 32 R0 SYMATTR InstName R4 SYMATTR Value 380k SYMBOL res -112 320 R0 SYMATTR InstName Rsym SYMATTR Value 4k SYMBOL res 96 224 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R7 SYMATTR Value 270k SYMBOL cap -16 224 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 10µ SYMBOL Misc\\triode -608 144 M0 WINDOW 3 -2 62 Left 2 SYMATTR Value NH12AU7 SYMATTR InstName U4 SYMBOL res -560 320 M0 SYMATTR InstName R1 SYMATTR Value 47k TEXT -96 64 Left 2 !.tran 0 1.3 0 30u TEXT -96 40 Left 2 !.inc dmtriodep.inc TEXT -96 88 Left 2 !.four 1k V(out1)\n.four 1k V(out2)