Version 4 SHEET 1 2228 772 WIRE 272 64 -288 64 WIRE 416 64 336 64 WIRE 640 64 416 64 WIRE 416 96 416 64 WIRE 640 96 640 64 WIRE -288 128 -288 64 WIRE -112 128 -288 128 WIRE 272 128 272 64 WIRE 272 128 224 128 WIRE -288 160 -288 128 WIRE -192 160 -288 160 WIRE -288 192 -288 160 WIRE -192 208 -192 160 WIRE -112 208 -192 208 WIRE 336 208 336 64 WIRE 336 208 224 208 WIRE 416 224 416 176 WIRE -288 288 -288 272 WIRE -288 288 -480 288 WIRE -112 288 -288 288 WIRE 256 288 224 288 WIRE 336 288 320 288 WIRE -112 368 -144 368 WIRE 416 368 224 368 WIRE 480 368 416 368 WIRE 640 368 640 160 WIRE 640 368 560 368 WIRE 704 368 640 368 WIRE 816 368 704 368 WIRE 960 368 896 368 WIRE 1072 368 960 368 WIRE 1168 368 1072 368 WIRE -480 416 -480 288 WIRE 416 416 416 368 WIRE 1168 416 1168 368 WIRE -288 432 -288 288 WIRE 640 432 640 368 WIRE 960 432 960 368 WIRE -480 544 -480 496 WIRE -288 544 -288 496 WIRE 416 544 416 496 WIRE 640 544 640 496 WIRE 960 544 960 496 WIRE 1168 544 1168 496 FLAG -480 544 0 FLAG -288 544 0 FLAG 960 544 0 FLAG 1072 368 Ub FLAG 416 544 0 FLAG 1168 544 0 FLAG 640 544 0 FLAG 416 224 0 FLAG 704 368 Uout FLAG -144 368 Uout FLAG 336 288 Uout SYMBOL voltage -480 400 R0 WINDOW 123 0 0 Left 2 WINDOW 39 24 132 Left 2 SYMATTR SpiceLine Rser=10m SYMATTR InstName V1 SYMATTR Value 12 SYMBOL res -272 288 R180 WINDOW 0 -39 87 Left 2 WINDOW 3 -52 44 Left 2 SYMATTR InstName Rsc SYMATTR Value .66 SYMBOL cap 256 304 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C2 SYMATTR Value 757p SYMBOL schottky 656 160 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D1 SYMATTR Value 1N5818 SYMATTR Description Diode SYMATTR Type diode SYMBOL ind2 400 80 R0 SYMATTR InstName L1 SYMATTR Value 2.7m SYMATTR Type ind SYMBOL res 464 384 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R1 SYMATTR Value 5.6k SYMBOL res 400 400 R0 SYMATTR InstName R2 SYMATTR Value 75k SYMBOL res 1152 400 R0 SYMATTR InstName R4 SYMATTR Value 900 SYMBOL polcap -304 432 R0 WINDOW 39 24 86 Left 2 WINDOW 40 24 85 Left 2 SYMATTR SpiceLine Rser=0.05 SYMATTR InstName C1 SYMATTR Value 10µ SYMBOL cap 944 432 R0 WINDOW 39 24 92 Left 2 SYMATTR SpiceLine Rser=0.05 SYMATTR InstName C3 SYMATTR Value 10µ SYMBOL mc34063a 128 224 R0 SYMATTR InstName U1 SYMBOL cap 624 432 R0 WINDOW 39 24 92 Left 2 SYMATTR SpiceLine Rser=0.05 SYMATTR InstName C4 SYMATTR Value 100µ SYMBOL res 912 352 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 10 TEXT -472 -320 Left 2 !.tran 0 50m 1u 100n TEXT -472 -352 Left 2 !.inc MC34063A.lib TEXT 1120 272 Left 2 ;Abschluß für:\n18V 20mA TEXT -1072 -88 Left 2 ;http://www.a-z-e.de/index.php?file=mc34063.php\n \nVin = 15V\nVout = -18V\nIout = 20mA\nf (min) = 30 kHz\n \nCt = 757 pF\nIpk = 93 mA\nRsc = 3.241 Ohm\nLmin = 2863 uH\nCo = 34 uF\nR1 = 5.6 k\nR2 = 75 k\nVout = 17.99 V