Version 4 SHEET 1 880 788 WIRE -208 -208 -256 -208 WIRE -96 -208 -144 -208 WIRE -368 -128 -400 -128 WIRE -256 -128 -256 -208 WIRE -256 -128 -288 -128 WIRE -208 -128 -256 -128 WIRE -96 -128 -96 -208 WIRE -96 -128 -128 -128 WIRE -48 -128 -96 -128 WIRE 48 -128 32 -128 WIRE 352 -128 48 -128 WIRE 416 -128 352 -128 WIRE 240 0 144 0 WIRE 544 0 240 0 WIRE 592 0 544 0 WIRE -176 16 -176 -80 WIRE -144 16 -176 16 WIRE 64 16 -64 16 WIRE 144 32 144 0 WIRE 240 32 240 0 WIRE 592 32 592 0 WIRE -208 112 -240 112 WIRE -96 112 -144 112 WIRE 240 128 240 112 WIRE 288 128 240 128 WIRE 304 128 288 128 WIRE 416 128 416 -128 WIRE 416 128 368 128 WIRE 240 144 240 128 WIRE 592 144 592 112 WIRE -400 176 -400 -128 WIRE -368 176 -400 176 WIRE -240 176 -240 112 WIRE -240 176 -288 176 WIRE -208 176 -240 176 WIRE -96 176 -96 112 WIRE -96 176 -128 176 WIRE -48 176 -96 176 WIRE 48 176 48 -128 WIRE 48 176 32 176 WIRE 64 176 64 16 WIRE 80 176 64 176 WIRE 144 176 144 112 WIRE 144 208 144 176 WIRE 176 208 144 208 WIRE 192 208 176 208 WIRE -448 240 -480 240 WIRE -400 240 -400 176 WIRE -400 240 -448 240 WIRE 240 256 240 240 WIRE 288 256 240 256 WIRE 320 256 288 256 WIRE 144 272 144 208 WIRE 240 272 240 256 WIRE 320 272 320 256 WIRE 416 272 416 128 WIRE -480 288 -480 240 WIRE -176 320 -176 224 WIRE -144 320 -176 320 WIRE 64 320 64 176 WIRE 64 320 -80 320 WIRE 144 368 144 352 WIRE 240 368 240 352 WIRE 320 368 320 336 WIRE 416 368 416 352 WIRE -480 400 -480 368 WIRE -400 480 -400 240 WIRE -368 480 -400 480 WIRE -208 480 -304 480 WIRE -64 480 -128 480 WIRE 48 480 48 176 WIRE 48 480 0 480 WIRE -176 624 -176 528 WIRE -144 624 -176 624 WIRE 64 624 64 320 WIRE 64 624 -64 624 FLAG 144 368 0 FLAG 240 368 0 FLAG 320 368 0 FLAG 592 144 0 FLAG 416 368 0 FLAG -480 400 0 FLAG 352 -128 out FLAG -448 240 in FLAG 288 128 drain FLAG 288 256 source FLAG 176 208 gate FLAG 544 0 supply SYMBOL njf 192 144 R0 SYMATTR InstName J1 SYMATTR Value 2N4393 SYMBOL res 224 256 R0 SYMATTR InstName R1 SYMATTR Value 4.7k SYMBOL res 224 16 R0 SYMATTR InstName R2 SYMATTR Value 4.7k SYMBOL cap 304 272 R0 SYMATTR InstName C1 SYMATTR Value 47u SYMBOL res 128 16 R0 SYMATTR InstName R3 SYMATTR Value 2.2meg SYMBOL res 128 256 R0 SYMATTR InstName R4 SYMATTR Value 560k SYMBOL voltage -480 272 R0 WINDOW 123 24 124 Left 2 WINDOW 39 0 0 Left 2 SYMATTR Value2 AC 1 SYMATTR InstName V1 SYMATTR Value SINE(0 2 1000) SYMBOL voltage 592 16 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value 9 SYMBOL potentiometer_standard -112 -144 R90 SYMATTR InstName U1 SYMATTR Value Rtot=300K wiper=.9 SYMBOL potentiometer_standard -112 160 R90 SYMATTR InstName U2 SYMATTR Value Rtot=300K wiper=.1 SYMBOL potentiometer_standard -112 464 R90 SYMATTR InstName U3 SYMATTR Value Rtot=300K wiper=.8 SYMBOL res -272 -144 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R5 SYMATTR Value 47k SYMBOL res 48 -144 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 47k SYMBOL cap -304 464 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value 1000p SYMBOL cap 0 464 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C3 SYMATTR Value 1000p SYMBOL cap -144 -224 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C4 SYMATTR Value 4700p SYMBOL cap -208 96 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C5 SYMATTR Value 470p SYMBOL res 48 160 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R7 SYMATTR Value 47k SYMBOL res -272 160 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R8 SYMATTR Value 47k SYMBOL cap -80 304 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C6 SYMATTR Value 3300p SYMBOL res -48 0 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R9 SYMATTR Value 100k SYMBOL res -48 608 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R10 SYMATTR Value 22k SYMBOL cap 368 112 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C7 SYMATTR Value 0.22u SYMBOL cap 144 160 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C8 SYMATTR Value 0.047u SYMBOL res 400 256 R0 SYMATTR InstName R11 SYMATTR Value 220k TEXT -496 600 Left 2 !;tran 0 100m 95m TEXT -496 560 Left 2 !.ac dec 20 20 20000