TEXT -512 1336 Left 0 !.MODEL BF245C NJF(VTO=-5.0014 BETA=5.43157E-4 BETATCE=-0.5 LAMBDA=2.71505E-2 RD=1.20869E1 RS=1.20869E1 CGS=2.00000E-12 CGD=2.00000E-12 PB=1.24659 IS=3.64346E-16 XTI=3 AF=1 FC=0.5 N=1 NR=2 MFG=PHILIPS) Version 4 SHEET 1 1140 680 WIRE -992 -240 -992 -304 WIRE -288 -208 -768 -208 WIRE -64 -208 -288 -208 WIRE 304 -208 -64 -208 WIRE 464 -208 304 -208 WIRE 656 -208 464 -208 WIRE 1040 -208 656 -208 WIRE 592 -160 576 -160 WIRE -64 -128 -64 -208 WIRE -768 -112 -768 -208 WIRE -288 -64 -288 -208 WIRE 464 -64 464 -128 WIRE 496 -64 464 -64 WIRE 576 -64 576 -160 WIRE -960 -48 -960 -96 WIRE 656 -48 656 -112 WIRE 752 -48 656 -48 WIRE -64 -16 -64 -48 WIRE 304 -16 304 -128 WIRE 304 -16 240 -16 WIRE 320 -16 304 -16 WIRE -64 32 -64 -16 WIRE 32 32 -64 32 WIRE 176 32 112 32 WIRE 752 32 752 -48 WIRE -288 48 -288 16 WIRE -288 48 -336 48 WIRE -64 48 -64 32 WIRE -768 64 -768 -32 WIRE -720 64 -768 64 WIRE -416 64 -416 48 WIRE -416 64 -656 64 WIRE 464 80 464 32 WIRE 464 80 240 80 WIRE -288 96 -288 48 WIRE -256 96 -288 96 WIRE -144 96 -144 -16 WIRE -144 96 -192 96 WIRE -128 96 -144 96 WIRE 400 96 400 -16 WIRE 416 96 400 96 WIRE 32 112 32 32 WIRE 112 112 112 32 WIRE -960 128 -960 32 WIRE -816 128 -960 128 WIRE -288 128 -288 96 WIRE -640 160 -640 144 WIRE -640 160 -768 160 WIRE 416 160 416 96 WIRE -416 176 -416 64 WIRE -352 176 -416 176 WIRE -768 192 -768 160 WIRE -640 192 -640 160 WIRE -288 352 -288 224 FLAG 656 32 0 FLAG 416 240 0 FLAG 240 160 0 FLAG 32 176 0 FLAG 112 176 0 FLAG -64 144 0 FLAG -288 352 0 FLAG -768 272 0 FLAG 1120 -208 0 FLAG -992 -384 0 FLAG -640 256 0 FLAG 752 192 0 SYMBOL njf -816 64 R0 SYMATTR InstName J1 SYMATTR Value BF245C SYMBOL npn -352 128 R0 SYMATTR InstName Q1 SYMATTR Value BC547C SYMBOL npn 176 -16 R0 SYMATTR InstName Q2 SYMATTR Value BC547B SYMBOL npn -128 48 R0 SYMATTR InstName Q3 SYMATTR Value BC547C SYMBOL npn 400 -64 R0 SYMATTR InstName Q4 SYMATTR Value BC547C SYMBOL pnp 592 -112 M180 SYMATTR InstName Q6 SYMATTR Value BC556B SYMBOL res -80 -144 R0 SYMATTR InstName R2 SYMATTR Value 3k9 SYMBOL res -304 -80 R0 SYMATTR InstName R4 SYMATTR Value 2200 SYMBOL res 16 48 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R5 SYMATTR Value 10k SYMBOL res 400 144 R0 SYMATTR InstName R6 SYMATTR Value 30k SYMBOL res 304 0 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R7 SYMATTR Value 39k SYMBOL res 288 -224 R0 SYMATTR InstName R8 SYMATTR Value 47k SYMBOL res 224 64 R0 SYMATTR InstName R9 SYMATTR Value 1k5 SYMBOL res 480 -112 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R10 SYMATTR Value 2k7 SYMBOL res 480 -48 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R11 SYMATTR Value 22k SYMBOL res 640 -64 R0 SYMATTR InstName R12 SYMATTR Value 2200 SYMBOL cap 96 112 R0 SYMATTR InstName C1 SYMATTR Value 180n SYMBOL cap 16 112 R0 SYMATTR InstName C2 SYMATTR Value 180n SYMBOL cap -256 112 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C3 SYMATTR Value 4.7µ SYMBOL res -784 -128 R0 SYMATTR InstName R17 SYMATTR Value 2200 SYMBOL res -784 176 R0 SYMATTR InstName R18 SYMATTR Value 1000 SYMBOL voltage -992 -288 R180 WINDOW 123 24 124 Left 2 WINDOW 39 0 0 Left 2 SYMATTR Value2 AC 1 SYMATTR InstName V1 SYMATTR Value PULSE(50u 200u 10m 1m 1m 50m 100m) SYMBOL voltage 1024 -208 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 -32 56 VBottom 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value 12 SYMBOL SpecialFunctions\\modulate -928 -240 R90 SYMATTR InstName A1 SYMATTR SpiceLine mark=77.5k space=77.5K SYMBOL voltage -960 48 R180 WINDOW 0 24 96 Left 2 WINDOW 3 -190 -378 Left 2 WINDOW 123 -190 -406 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V3 SYMATTR Value SINE(0 0 0) SYMATTR Value2 AC 1 SYMBOL cap -720 80 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C4 SYMATTR Value 100n SYMBOL res -432 64 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R14 SYMATTR Value 1meg SYMBOL res -160 0 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R3 SYMATTR Value 1meg SYMBOL cap -656 192 R0 SYMATTR InstName C5 SYMATTR Value 100n SYMBOL res 736 16 R0 SYMATTR InstName R15 SYMATTR Value 6800 SYMBOL res 736 96 R0 SYMATTR InstName R16 SYMATTR Value 5100 TEXT -552 -392 Left 2 !.tran 0 0.3 0 10µ TEXT -560 -352 Left 2 !;ac dec 10k 10k 1meg