Version 4 SHEET 1 2516 916 WIRE -496 -576 -576 -576 WIRE -352 -576 -432 -576 WIRE -192 -576 -352 -576 WIRE 80 -576 -192 -576 WIRE 160 -576 80 -576 WIRE 320 -576 240 -576 WIRE -352 -480 -352 -576 WIRE -192 -480 -192 -576 WIRE 80 -480 80 -576 WIRE -192 -336 -192 -400 WIRE 320 -304 320 -576 WIRE -672 -288 -736 -288 WIRE -544 -288 -608 -288 WIRE -352 -288 -352 -400 WIRE -352 -288 -544 -288 WIRE -256 -288 -352 -288 WIRE -736 -240 -736 -288 WIRE -544 -240 -544 -288 WIRE 80 -192 80 -400 WIRE -544 -144 -544 -176 WIRE -192 -144 -192 -240 WIRE -192 -144 -544 -144 WIRE 16 -144 -192 -144 WIRE -736 -80 -736 -160 WIRE -544 -64 -544 -144 WIRE -352 -64 -352 -288 WIRE -192 -48 -192 -144 WIRE 80 -48 80 -96 WIRE -736 64 -736 0 WIRE -544 64 -544 0 WIRE -544 64 -736 64 WIRE -352 64 -352 16 WIRE -352 64 -544 64 WIRE -192 64 -192 32 WIRE -192 64 -352 64 WIRE -64 64 -192 64 WIRE 80 64 80 32 WIRE 80 64 -64 64 WIRE 320 64 320 -224 WIRE 320 64 80 64 WIRE -64 112 -64 64 WIRE -496 208 -576 208 WIRE -352 208 -432 208 WIRE -192 208 -352 208 WIRE 80 208 -192 208 WIRE 160 208 80 208 WIRE 320 208 240 208 WIRE -352 304 -352 208 WIRE -192 304 -192 208 WIRE 80 304 80 208 WIRE -192 448 -192 384 WIRE 320 480 320 208 WIRE -736 496 -880 496 WIRE -672 496 -736 496 WIRE -544 496 -608 496 WIRE -352 496 -352 384 WIRE -352 496 -544 496 WIRE -256 496 -352 496 WIRE -880 544 -880 496 WIRE -736 544 -736 496 WIRE -544 544 -544 496 WIRE 80 592 80 384 WIRE -544 640 -544 608 WIRE -192 640 -192 544 WIRE -192 640 -544 640 WIRE 16 640 -192 640 WIRE -1024 656 -1120 656 WIRE -880 656 -880 608 WIRE -880 656 -944 656 WIRE -1120 704 -1120 656 WIRE -736 704 -736 624 WIRE -544 720 -544 640 WIRE -352 720 -352 496 WIRE -880 736 -880 656 WIRE -192 736 -192 640 WIRE 80 736 80 688 WIRE -1120 848 -1120 784 WIRE -880 848 -880 800 WIRE -880 848 -1120 848 WIRE -736 848 -736 784 WIRE -736 848 -880 848 WIRE -544 848 -544 784 WIRE -544 848 -736 848 WIRE -352 848 -352 800 WIRE -352 848 -544 848 WIRE -192 848 -192 816 WIRE -192 848 -352 848 WIRE -64 848 -192 848 WIRE 80 848 80 816 WIRE 80 848 -64 848 WIRE 320 848 320 560 WIRE 320 848 80 848 WIRE -64 896 -64 848 FLAG -576 -576 0 FLAG -64 112 0 FLAG -576 208 0 FLAG -64 896 0 SYMBOL res -208 -496 R0 SYMATTR InstName R1 SYMATTR Value 4.7k SYMBOL res -368 -496 R0 SYMATTR InstName R3 SYMATTR Value 33k SYMBOL cap -432 -592 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 220n SYMBOL cap -560 -240 R0 SYMATTR InstName C2 SYMATTR Value 1n SYMBOL cap -560 -64 R0 SYMATTR InstName C3 SYMATTR Value 1n SYMBOL cap -608 -304 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C4 SYMATTR Value 1n SYMBOL ind -752 -96 R0 SYMATTR InstName L1 SYMATTR Value 50µ SYMBOL voltage 320 -320 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL npn 16 -192 R0 SYMATTR InstName Q2 SYMATTR Value BC550C SYMBOL res 64 -496 R0 SYMATTR InstName R6 SYMATTR Value 1k SYMBOL res 64 -64 R0 SYMATTR InstName R7 SYMATTR Value 470 SYMBOL res 256 -592 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R8 SYMATTR Value 220 SYMBOL res -368 -80 R0 SYMATTR InstName R2 SYMATTR Value 33k SYMBOL res -752 -256 R0 SYMATTR InstName R5 SYMATTR Value 5 SYMBOL npn -256 -336 R0 SYMATTR InstName Q1 SYMATTR Value BC550C SYMBOL res -208 -64 R0 SYMATTR InstName R4 SYMATTR Value 2.2k SYMBOL res -208 288 R0 SYMATTR InstName R9 SYMATTR Value 4.7k SYMBOL res -368 288 R0 SYMATTR InstName R10 SYMATTR Value 33k SYMBOL cap -432 192 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C5 SYMATTR Value 220n SYMBOL cap -560 544 R0 SYMATTR InstName C6 SYMATTR Value 1n SYMBOL cap -560 720 R0 SYMATTR InstName C7 SYMATTR Value 1n SYMBOL cap -608 480 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C8 SYMATTR Value 1n SYMBOL ind -752 688 R0 SYMATTR InstName L2 SYMATTR Value 50µ SYMBOL voltage 320 464 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value 12 SYMBOL npn 16 592 R0 SYMATTR InstName Q3 SYMATTR Value BC550C SYMBOL res 64 288 R0 SYMATTR InstName R11 SYMATTR Value 1k SYMBOL res 64 720 R0 SYMATTR InstName R12 SYMATTR Value 470 SYMBOL res 256 192 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R13 SYMATTR Value 220 SYMBOL res -368 704 R0 SYMATTR InstName R14 SYMATTR Value 33k SYMBOL res -752 528 R0 SYMATTR InstName R15 SYMATTR Value 5 SYMBOL npn -256 448 R0 SYMATTR InstName Q4 SYMATTR Value BC550C SYMBOL res -208 720 R0 SYMATTR InstName R16 SYMATTR Value 2.2k SYMBOL varactor -896 544 R0 SYMATTR InstName D1 SYMATTR Value BB212 SYMATTR Type diode SYMBOL varactor -864 800 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D2 SYMATTR Value BB212 SYMATTR Type diode SYMBOL ind -1040 672 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L3 SYMATTR Value 100µ SYMBOL voltage -1120 688 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V3 SYMATTR Value 4 TEXT -752 136 Left 2 !.tran 0 100m 0 100n startup TEXT 480 -440 Left 2 !.model BC550B NPN(Is=7.049f Xti=3 Eg=1.11 Vaf=59.93 Bf=375.6 Ise=56.03f\n+ Ne=1.553 Ikf=87.07m Nk=.4901 Xtb=1.5 Br=2.886 Isc=7.371p\n+ Nc=1.508 Ikr=5.426 Rc=1.175 Cjc=5.5p Mjc=.3132 Vjc=.4924 Fc=.5\n+ Cje=11.5p Mje=.6558 Vje=.5 Tr=10n Tf=417.3p Itf=1.512 Xtf=39.51\n+ Vtf=10)\n* PHILIPS pid=bc549b case=TO92\n* 91-07-31 dsq\n*$\n.model BC550C NPN(Is=7.049f Xti=3 Eg=1.11 Vaf=23.89 Bf=493.2 Ise=99.2f\n+ Ne=1.829 Ikf=.1542 Nk=.6339 Xtb=1.5 Br=2.886 Isc=7.371p\n+ Nc=1.508 Ikr=5.426 Rc=1.175 Cjc=5.5p Mjc=.3132 Vjc=.4924 Fc=.5\n+ Cje=11.5p Mje=.6558 Vje=.5 Tr=10n Tf=420.3p Itf=1.374 Xtf=39.42\n+ Vtf=10)\n* PHILIPS pid=bc549c case=TO92\n* 91-07-31 dsq TEXT 384 48 Left 2 !.MODEL BB212 D ( IS=1e-14 RS=0.0011 CJO=7.202e-10 VJ=.10 TT=5n M=0.9 BV=100 XTI=3 FC=0.5 IBV=0.0001 mfg=Philips type=varactor