Version 4 SHEET 1 2768 680 WIRE 368 -1840 -80 -1840 WIRE 688 -1840 368 -1840 WIRE 1088 -1840 688 -1840 WIRE 1264 -1840 1088 -1840 WIRE 688 -1728 688 -1760 WIRE 1088 -1728 1088 -1760 WIRE 848 -1680 752 -1680 WIRE 1024 -1680 848 -1680 WIRE 688 -1600 688 -1632 WIRE 848 -1600 848 -1680 WIRE 848 -1600 688 -1600 WIRE 1088 -1552 1088 -1632 WIRE 1088 -1552 752 -1552 WIRE 368 -1520 368 -1840 WIRE 1264 -1488 1264 -1840 WIRE 688 -1456 688 -1504 WIRE 368 -1408 368 -1440 WIRE 368 -1408 272 -1408 WIRE 688 -1408 688 -1456 WIRE 1088 -1392 1088 -1552 WIRE 1264 -1376 1264 -1408 WIRE 1360 -1376 1264 -1376 WIRE 368 -1360 368 -1408 WIRE 624 -1360 368 -1360 WIRE 1264 -1344 1264 -1376 WIRE 1264 -1344 1152 -1344 WIRE 1264 -1328 1264 -1344 WIRE -80 -1312 -80 -1840 WIRE 688 -1280 688 -1312 WIRE 1088 -1264 1088 -1296 WIRE 368 -1232 304 -1232 WIRE 624 -1232 496 -1232 WIRE 304 -1184 304 -1232 WIRE 368 -1184 368 -1232 WIRE 496 -1184 496 -1232 WIRE 496 -1184 368 -1184 WIRE 752 -1184 688 -1184 WIRE 912 -1184 832 -1184 WIRE 1088 -1168 1056 -1168 WIRE 912 -1136 912 -1184 WIRE 976 -1136 912 -1136 WIRE 1056 -1136 1056 -1168 WIRE -80 -1120 -80 -1232 WIRE -80 -1120 -240 -1120 WIRE -80 -1072 -80 -1120 WIRE 912 -880 912 -1136 WIRE 800 -832 800 -880 WIRE 800 -832 720 -832 WIRE 848 -832 800 -832 WIRE 800 -768 800 -832 WIRE 912 -672 912 -784 WIRE 800 -656 800 -704 WIRE -80 -512 -80 -992 WIRE 800 -512 800 -592 WIRE 800 -512 -80 -512 WIRE 912 -512 912 -592 WIRE 912 -512 800 -512 FLAG -240 -1120 0 FLAG 800 -960 0 FLAG 656 -832 0 FLAG 304 -1104 0 FLAG 688 -1456 out1 FLAG 272 -1344 0 FLAG 1360 -1312 0 FLAG 304 -1296 0 FLAG 1264 -1200 0 FLAG 1152 -1216 0 SYMBOL npn 624 -1280 R0 SYMATTR InstName Q1 SYMATTR Value MPSA18 SYMBOL npn 1152 -1264 M0 SYMATTR InstName Q2 SYMATTR Value MPSA18 SYMBOL npn 848 -880 R0 SYMATTR InstName Q3 SYMATTR Value MPSA18 SYMBOL res 896 -688 R0 SYMATTR InstName R1 SYMATTR Value 250 SYMBOL voltage -80 -1328 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value 30 SYMBOL voltage -80 -1088 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V2 SYMATTR Value 30 SYMBOL diode 784 -768 R0 SYMATTR InstName D1 SYMATTR Value 1N4148 SYMBOL diode 784 -656 R0 SYMATTR InstName D2 SYMATTR Value 1N4148 SYMBOL res 784 -976 R0 SYMATTR InstName R2 SYMATTR Value 20k SYMBOL cap 720 -848 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C1 SYMATTR Value 10µ SYMBOL pnp 752 -1632 R180 SYMATTR InstName Q4 SYMATTR Value BC327-40 SYMBOL pnp 1024 -1632 M180 SYMATTR InstName Q5 SYMATTR Value BC327-40 SYMBOL voltage 304 -1200 R0 WINDOW 123 24 44 Left 0 WINDOW 39 0 0 Left 0 SYMATTR Value2 AC 1 SYMATTR InstName V3 SYMATTR Value SINE(0 100u 1k) SYMBOL res 848 -1200 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R6 SYMATTR Value 100 SYMBOL res 1072 -1152 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R7 SYMATTR Value 100 SYMBOL res 672 -1856 R0 SYMATTR InstName R9 SYMATTR Value 220 SYMBOL res 1072 -1856 R0 SYMATTR InstName R10 SYMATTR Value 220 SYMBOL pnp 752 -1504 R180 SYMATTR InstName Q11 SYMATTR Value BC327-40 SYMBOL npn 624 -1408 R0 SYMATTR InstName Q12 SYMATTR Value MPSA18 SYMBOL npn 1152 -1392 M0 SYMATTR InstName Q13 SYMATTR Value MPSA18 SYMBOL res 352 -1536 R0 SYMATTR InstName R4 SYMATTR Value 20k SYMBOL cap 288 -1344 R180 WINDOW 0 24 64 Left 0 WINDOW 3 24 8 Left 0 SYMATTR InstName C6 SYMATTR Value 10µ SYMBOL diode 352 -1360 R0 SYMATTR InstName D5 SYMATTR Value 1N4148 SYMBOL res 1280 -1504 M0 SYMATTR InstName R20 SYMATTR Value 20k SYMBOL cap 1344 -1312 M180 WINDOW 0 24 64 Left 0 WINDOW 3 24 8 Left 0 SYMATTR InstName C7 SYMATTR Value 10µ SYMBOL diode 1280 -1328 M0 WINDOW 3 54 31 Left 0 SYMATTR InstName D6 SYMATTR Value 1N4148 SYMBOL diode 368 -1312 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName D7 SYMATTR Value 1N4148 SYMBOL diode 1280 -1264 M0 WINDOW 3 -91 33 Left 0 SYMATTR InstName D8 SYMATTR Value 1N4148 TEXT -576 -2208 Left 0 !.model MPSA18 NPN(Is=33.58f Xti=3 Eg=1.11 Vaf=100 Bf=2.365K Ne=1.579\n \n+Ise=166.7f Ikf=.1172 Xtb=1.5 Br=5.774 Nc=2 Isc=0 Ikr=0 Rc=1\n \n+Cjc=4.948p Mjc=.4109 Vjc=.75 Fc=.5 Cje=7.547p Mje=.3765 Vje=.75\n \n+Tr=800.3p Tf=310.1p Itf=.6 Vtf=6 Xtf=35 Rb=10) TEXT 144 -2016 Left 0 !;tran 0 40m 5m 0.001m TEXT 472 -2168 Left 0 !.ac dec 1000 0.1 1Gig TEXT 488 -2112 Left 0 !.four 1k V(out1)\n.options plotwinsize=0