Version 4 SHEET 1 2224 1972 WIRE 48 96 -272 96 WIRE 352 96 112 96 WIRE 32 208 -176 208 WIRE 240 208 128 208 WIRE 352 208 352 96 WIRE 352 208 320 208 WIRE -1056 320 -1168 320 WIRE -272 320 -272 96 WIRE -272 320 -1056 320 WIRE -176 320 -176 208 WIRE -176 320 -272 320 WIRE 32 320 -176 320 WIRE 240 320 128 320 WIRE 352 320 352 208 WIRE 352 320 320 320 WIRE 688 320 352 320 WIRE 1008 320 688 320 WIRE 1424 320 1088 320 WIRE 1520 320 1424 320 WIRE 1600 320 1520 320 WIRE 1680 320 1600 320 WIRE 1744 320 1680 320 WIRE 1776 320 1744 320 WIRE 1424 368 1424 320 WIRE 80 384 80 272 WIRE -176 432 -176 320 WIRE 32 432 -176 432 WIRE 240 432 128 432 WIRE 352 432 352 320 WIRE 352 432 320 432 WIRE 80 496 80 384 WIRE -176 544 -176 432 WIRE -96 544 -176 544 WIRE 80 544 80 496 WIRE 80 544 0 544 WIRE 240 544 80 544 WIRE 352 544 352 432 WIRE 352 544 320 544 WIRE -48 688 -48 608 WIRE 640 688 -48 688 WIRE 1088 688 640 688 WIRE -48 720 -48 688 WIRE 640 720 640 688 WIRE 1088 720 1088 688 WIRE 560 832 -736 832 WIRE 1008 832 560 832 WIRE 1168 832 1008 832 WIRE 1296 832 1168 832 WIRE -736 928 -736 832 WIRE -464 928 -736 928 WIRE -336 928 -464 928 WIRE -128 928 -336 928 WIRE -48 928 -48 800 WIRE -48 928 -64 928 WIRE 96 928 -48 928 WIRE 736 928 96 928 WIRE 96 944 96 928 WIRE 736 944 736 928 WIRE 1168 944 1168 832 WIRE -1168 960 -1168 320 WIRE -1056 976 -1056 320 WIRE 160 992 144 992 WIRE 800 992 784 992 WIRE -464 1024 -464 928 WIRE -336 1024 -336 928 WIRE 1296 1024 1296 832 WIRE 96 1040 96 1024 WIRE 96 1040 32 1040 WIRE 160 1040 160 992 WIRE 160 1040 96 1040 WIRE 736 1040 736 1024 WIRE 800 1040 800 992 WIRE 800 1040 736 1040 WIRE -176 1056 -256 1056 WIRE 1168 1072 1168 1024 WIRE 1232 1072 1168 1072 WIRE 160 1088 160 1040 WIRE 1744 1088 1744 320 WIRE 1520 1104 1520 320 WIRE 1600 1104 1600 320 WIRE -176 1120 -176 1056 WIRE -176 1120 -256 1120 WIRE -160 1120 -176 1120 WIRE -48 1120 -48 928 WIRE -48 1120 -80 1120 WIRE 1168 1120 1168 1072 WIRE -544 1184 -640 1184 WIRE -640 1200 -640 1184 WIRE 1296 1200 1296 1120 WIRE -48 1216 -48 1120 WIRE -48 1216 -256 1216 WIRE 560 1232 560 832 WIRE -864 1248 -960 1248 WIRE -736 1248 -736 928 WIRE -736 1248 -784 1248 WIRE 32 1248 32 1040 WIRE 80 1248 32 1248 WIRE 160 1248 160 1168 WIRE 288 1248 160 1248 WIRE 400 1248 288 1248 WIRE 432 1248 400 1248 WIRE 496 1248 464 1248 WIRE 528 1248 496 1248 WIRE 1008 1248 1008 832 WIRE 160 1264 160 1248 WIRE 640 1264 640 784 WIRE 640 1264 592 1264 WIRE 688 1264 688 320 WIRE 800 1264 688 1264 WIRE 944 1264 880 1264 WIRE 976 1264 944 1264 WIRE 32 1280 32 1248 WIRE 432 1280 432 1248 WIRE 528 1280 432 1280 WIRE 1088 1280 1088 784 WIRE 1088 1280 1040 1280 WIRE 1168 1280 1168 1264 WIRE 1168 1280 1088 1280 WIRE 976 1296 896 1296 WIRE -640 1312 -640 1280 WIRE -544 1312 -640 1312 WIRE -176 1312 -256 1312 WIRE -160 1312 -176 1312 WIRE -48 1312 -48 1216 WIRE -48 1312 -80 1312 WIRE 400 1312 288 1312 WIRE 464 1312 464 1248 WIRE 464 1312 400 1312 WIRE 80 1328 80 1248 WIRE -176 1344 -176 1312 WIRE -960 1360 -960 1248 WIRE 160 1360 160 1328 WIRE -736 1376 -736 1248 WIRE -736 1376 -816 1376 WIRE 800 1376 784 1376 WIRE 896 1376 896 1296 WIRE 896 1376 880 1376 WIRE 1296 1392 1296 1280 WIRE 496 1424 496 1248 WIRE 576 1424 496 1424 WIRE 640 1424 640 1264 WIRE 736 1424 736 1040 WIRE 944 1424 944 1264 WIRE 1024 1424 944 1424 WIRE 1088 1424 1088 1280 WIRE -176 1440 -176 1408 WIRE -176 1440 -256 1440 WIRE 288 1440 288 1312 WIRE -816 1456 -816 1376 WIRE -736 1456 -736 1376 WIRE -640 1456 -640 1312 WIRE -48 1456 -48 1312 WIRE 784 1472 784 1376 WIRE 32 1488 32 1360 WIRE 96 1488 32 1488 WIRE 160 1488 160 1440 WIRE 160 1488 96 1488 WIRE 736 1536 736 1504 WIRE 1424 1536 1424 448 WIRE 1424 1536 736 1536 WIRE -960 1584 -960 1440 WIRE -816 1584 -816 1520 WIRE -816 1584 -960 1584 WIRE -736 1584 -736 1520 WIRE -736 1584 -816 1584 WIRE -640 1584 -640 1520 WIRE -640 1584 -736 1584 WIRE -544 1584 -640 1584 WIRE -400 1584 -400 1472 WIRE -400 1584 -544 1584 WIRE -304 1584 -400 1584 WIRE -48 1584 -48 1520 WIRE -48 1584 -304 1584 WIRE 288 1584 288 1520 WIRE 288 1584 -48 1584 WIRE 1296 1584 1296 1456 WIRE 1296 1584 288 1584 WIRE 1680 1584 1680 320 WIRE 1680 1584 1296 1584 WIRE -960 1616 -960 1584 WIRE -736 1616 -736 1584 WIRE -544 1616 -544 1584 WIRE 688 1616 688 1264 WIRE -960 1712 -960 1696 WIRE -864 1712 -960 1712 WIRE -736 1712 -736 1680 WIRE -736 1712 -784 1712 WIRE -544 1712 -544 1680 WIRE -544 1712 -736 1712 WIRE 560 1712 560 1296 WIRE 560 1712 -544 1712 WIRE 1008 1712 1008 1312 WIRE 1008 1712 560 1712 WIRE -1168 1776 -1168 1040 WIRE -1056 1776 -1056 1040 WIRE -1056 1776 -1168 1776 WIRE 96 1776 96 1488 WIRE 96 1776 -1056 1776 WIRE 688 1776 688 1696 WIRE 688 1776 96 1776 WIRE 1520 1776 1520 1168 WIRE 1520 1776 688 1776 WIRE 1600 1776 1600 1168 WIRE 1600 1776 1520 1776 WIRE 1744 1776 1744 1168 WIRE 1744 1776 1600 1776 WIRE 1776 1776 1744 1776 WIRE 96 1792 96 1776 FLAG 1776 320 PLUS IOPIN 1776 320 Out FLAG 1776 1776 MINUS IOPIN 1776 1776 Out FLAG 96 1792 0 FLAG -304 1584 GND+/-15V SYMBOL npn 32 272 R270 WINDOW 0 84 4 VRight 0 WINDOW 3 84 54 VRight 0 SYMATTR InstName Q5 SYMATTR Value TIP3055 SYMBOL npn 32 384 R270 WINDOW 0 82 4 VRight 0 WINDOW 3 84 56 VRight 0 SYMATTR InstName Q4 SYMATTR Value TIP3055 SYMBOL npn 32 496 R270 WINDOW 0 82 3 VRight 0 WINDOW 3 84 55 VRight 0 SYMATTR InstName Q3 SYMATTR Value TIP3055 SYMBOL npn -96 608 R270 WINDOW 0 84 5 VRight 0 WINDOW 3 85 51 VRight 0 SYMATTR InstName Q2 SYMATTR Value TIP31C SYMBOL res 224 560 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R17 SYMATTR Value 10 SYMATTR SpiceLine pwr=1 SYMBOL res 224 448 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R18 SYMATTR Value 0.22 SYMATTR SpiceLine pwr=1 SYMBOL res 224 336 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R19 SYMATTR Value 0.22 SYMATTR SpiceLine pwr=1 SYMBOL res 224 224 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R20 SYMATTR Value 0.22 SYMATTR SpiceLine pwr=1 SYMBOL diode 112 80 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName D8 SYMATTR Value 1N4001 SYMBOL res -64 704 R0 SYMATTR InstName R9 SYMATTR Value 2k2 SYMBOL diode 624 720 R0 WINDOW 3 -108 71 Left 0 WINDOW 0 -66 22 Left 0 SYMATTR Value 1N4148 SYMATTR InstName D4 SYMBOL diode -64 912 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 43 44 VTop 0 SYMATTR InstName D1 SYMATTR Value 1N4001 SYMBOL res 992 336 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R21 SYMATTR Value 0.22 SYMATTR SpiceLine pwr=3 SYMBOL diode 1072 720 R0 WINDOW 3 -111 69 Left 0 WINDOW 0 -64 23 Left 0 SYMATTR Value 1N4148 SYMATTR InstName D5 SYMBOL LM723 -400 1152 R0 SYMATTR InstName U1 SYMBOL res -656 1184 R0 SYMATTR InstName R1 SYMATTR Value 4k7 SYMBOL Misc\\EuropeanPolcap -656 1456 R0 SYMATTR InstName C3 SYMATTR Value 100µ SYMATTR SpiceLine V=10V Rser=0.2 SYMBOL cap -192 1344 R0 SYMATTR InstName C4 SYMATTR Value 100p SYMATTR SpiceLine Rser=100 SYMBOL res -176 1136 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R2 SYMATTR Value 22 SYMBOL res -176 1328 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 -3 68 VBottom 0 SYMATTR InstName R3 SYMATTR Value 4k7 SYMBOL Misc\\EuropeanPolcap -64 1456 R0 SYMATTR InstName C5 SYMATTR Value 10µ SYMATTR SpiceLine V=25V Rser=0.6 SYMBOL Misc\\EuropeanPolcap -752 1456 R0 SYMATTR InstName C1 SYMATTR Value 1000µ SYMATTR SpiceLine V=25V Rser=0.09 SYMBOL res -880 1264 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R27 SYMATTR Value 47 SYMBOL Misc\\EuropeanPolcap -752 1616 R0 SYMATTR InstName C2 SYMATTR Value 1000µ SYMATTR SpiceLine V=25V Rser=0.09 SYMBOL res -880 1728 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R28 SYMATTR Value 47 SYMBOL diode 272 1248 R0 WINDOW 0 1 -92 Left 0 WINDOW 3 -46 -47 Left 0 SYMATTR InstName D2 SYMATTR Value 1N4148 SYMBOL diode 416 1312 R180 WINDOW 0 -5 157 Left 0 WINDOW 3 -71 111 Left 0 SYMATTR InstName D3 SYMATTR Value 1N4148 SYMBOL potentiometer_standard 16 1264 R0 WINDOW 0 -27 14 Left 0 WINDOW 3 48 89 Invisible 0 WINDOW 39 48 112 Invisible 0 WINDOW 38 38 102 Left 0 SYMATTR InstName P1 SYMATTR Value Rt=50K set=0.5 SYMBOL res 144 1072 R0 SYMATTR InstName R6 SYMATTR Value 4k7 SYMBOL cap 144 1264 R0 SYMATTR InstName C6 SYMATTR Value 1n SYMBOL res 144 1344 R0 SYMATTR InstName R7 SYMATTR Value 1k SYMBOL res 272 1424 R0 SYMATTR InstName R8 SYMATTR Value 4k7 SYMBOL cap 576 1440 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName C7 SYMATTR Value 100p SYMATTR SpiceLine Rser=100 SYMBOL potentiometer_standard 720 1408 R0 WINDOW 0 25 5 Left 0 WINDOW 3 48 89 Invisible 0 WINDOW 39 48 112 Invisible 0 WINDOW 38 29 90 Left 0 SYMATTR InstName P2 SYMATTR Value Rt=1K set=1 SYMBOL res 784 1280 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R14 SYMATTR Value 4k7 SYMBOL res 784 1392 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R13 SYMATTR Value 4k7 SYMBOL cap 1024 1440 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName C8 SYMATTR Value 56p SYMATTR SpiceLine Rser=100 SYMBOL res 1152 1168 R0 SYMATTR InstName R12 SYMATTR Value 4k7 SYMBOL res 1152 928 R0 SYMATTR InstName R10 SYMATTR Value 1k SYMBOL pnp 1232 1120 M180 SYMATTR InstName Q1 SYMATTR Value BC559C SYMBOL res 1280 1184 R0 SYMATTR InstName R11 SYMATTR Value 1k SYMBOL LED 1280 1392 R0 SYMATTR InstName D7 SYMATTR Value QTLP690C SYMBOL res 1408 352 R0 SYMATTR InstName R23 SYMATTR Value 10 SYMBOL Misc\\EuropeanPolcap 1504 1104 R0 SYMATTR InstName C9 SYMATTR Value 47µ SYMATTR SpiceLine V=63V Rser=0.2 SYMBOL res 672 1600 R0 SYMATTR InstName R22 SYMATTR Value 4k7 SYMATTR SpiceLine pwr=1 SYMBOL voltage -960 1344 R0 WINDOW 0 24 104 Left 0 WINDOW 3 24 16 Left 0 WINDOW 123 0 0 Left 0 SYMATTR InstName V2 SYMATTR Value 17V SYMATTR SpiceLine Rser=0.1 SYMBOL Misc\\EuropeanPolcap -1072 976 R0 WINDOW 0 38 -6 Left 0 WINDOW 3 41 79 Left 0 SYMATTR InstName C10 SYMATTR Value 4700µ SYMATTR SpiceLine V=63 Irms=5 Rser=0.04 MTBF=2000 Lser=0 SYMBOL voltage -1168 944 R0 WINDOW 123 0 0 Left 0 WINDOW 0 24 10 Left 0 SYMATTR InstName V1 SYMATTR Value 33V SYMATTR SpiceLine Rser=0.1 SYMBOL voltage -960 1600 R0 WINDOW 0 34 91 Left 0 WINDOW 3 24 16 Left 0 WINDOW 123 0 0 Left 0 SYMATTR InstName V3 SYMATTR Value 17V SYMATTR SpiceLine Rser=0.1 SYMBOL potentiometer_standard 80 928 R0 WINDOW 0 -1 -35 Left 0 WINDOW 3 48 89 Invisible 0 WINDOW 39 48 112 Invisible 0 WINDOW 38 48 30 Left 0 SYMATTR InstName P3 SYMATTR Value Rt=25K set=0.524 SYMBOL potentiometer_standard 720 928 R0 WINDOW 0 -1 -35 Left 0 WINDOW 3 48 89 Invisible 0 WINDOW 39 48 112 Invisible 0 WINDOW 38 51 31 Left 0 SYMATTR InstName P4 SYMATTR Value Rt=25K set=0.63 SYMBOL cap 1584 1104 R0 SYMATTR InstName C11 SYMATTR Value 100n SYMATTR SpiceLine Rser=50 SYMBOL res 1728 1072 R0 SYMATTR InstName RL SYMATTR Value 20 SYMBOL Robertugo\\OPAMP5 560 1200 R0 SYMATTR InstName U2 SYMATTR SpiceModel LM741/NS SYMBOL Robertugo\\OPAMP5 1008 1216 R0 SYMATTR InstName U4 SYMATTR SpiceModel LM741/NS SYMBOL zener -800 1520 R180 WINDOW 0 24 72 Left 0 WINDOW 3 24 0 Left 0 SYMATTR InstName D9 SYMATTR Value BZX84C15L SYMBOL zener -528 1680 R180 WINDOW 0 24 72 Left 0 WINDOW 3 24 0 Left 0 SYMATTR InstName D11 SYMATTR Value BZX84C15L SYMBOL zener 1184 1184 R180 WINDOW 0 24 72 Left 0 WINDOW 3 24 0 Left 0 SYMATTR InstName D6 SYMATTR Value 1N746 TEXT -760 528 Left 0 !.tran 0 1 0 TEXT 88 1336 Left 0 ;50k TEXT 176 992 Left 0 ;25k TEXT 816 992 Left 0 ;25k TEXT 800 1464 Left 0 ;1k TEXT -760 568 Left 0 ;.op TEXT 368 184 Left 0 ;1W TEXT 368 288 Left 0 ;1W TEXT 368 400 Left 0 ;1W TEXT 368 512 Left 0 ;1W TEXT 1032 384 Left 0 ;3W TEXT -888 1528 Left 0 ;1W TEXT -496 1688 Left 0 ;1W TEXT 680 112 Left 0 ;From Elektor - Dezember/1982.\nModified by Milivoj Djuran.\nSchematic for LTSpice by Damir Vrdjuka. TEXT 760 1672 Left 0 ;1W RECTANGLE Normal 208 624 -224 144 2