Version 4 SHEET 1 1364 1776 WIRE 48 288 0 288 WIRE 176 288 128 288 WIRE 272 288 176 288 WIRE 576 288 352 288 WIRE 0 352 0 288 WIRE 272 368 272 352 WIRE 496 368 272 368 WIRE 496 400 496 368 WIRE 272 416 272 368 WIRE 176 432 176 288 WIRE 240 432 176 432 WIRE 352 448 304 448 WIRE 432 448 352 448 WIRE 240 464 176 464 WIRE 352 480 352 448 WIRE 272 512 272 480 WIRE 496 544 496 496 WIRE 576 544 576 288 WIRE 576 544 496 544 WIRE 224 576 -384 576 WIRE 352 576 352 544 WIRE 352 576 304 576 WIRE 576 608 576 544 WIRE -384 624 -384 576 WIRE -336 624 -384 624 WIRE -192 624 -256 624 WIRE -144 624 -192 624 WIRE 0 624 -64 624 WIRE 352 624 352 576 WIRE 0 672 0 624 WIRE -192 720 -192 624 WIRE -192 720 -256 720 WIRE -384 736 -384 624 WIRE -320 736 -384 736 WIRE -192 752 -256 752 WIRE -144 752 -192 752 WIRE 352 752 352 688 WIRE 352 752 -64 752 WIRE 576 752 576 688 WIRE 576 752 352 752 WIRE -288 784 -288 768 WIRE -192 784 -192 752 WIRE -336 896 -384 896 WIRE -192 896 -192 864 WIRE -192 896 -256 896 WIRE -144 896 -192 896 WIRE 0 896 -64 896 WIRE 48 896 0 896 WIRE 160 896 128 896 WIRE 176 896 176 464 WIRE 176 896 160 896 WIRE 240 896 176 896 WIRE 416 896 320 896 WIRE 576 896 576 752 WIRE 576 896 416 896 WIRE 704 896 576 896 WIRE 784 896 704 896 WIRE 832 896 784 896 WIRE 416 928 416 896 WIRE 160 944 160 896 WIRE 0 960 0 896 WIRE -384 976 -384 896 WIRE 704 1024 704 896 WIRE 704 1024 608 1024 WIRE 784 1024 784 896 WIRE 160 1040 160 1008 WIRE 256 1040 160 1040 WIRE 416 1040 416 1008 WIRE 416 1040 320 1040 WIRE 608 1088 608 1024 WIRE 0 1104 0 1040 WIRE 224 1120 224 1104 WIRE -384 1136 -384 1104 WIRE 416 1136 416 1040 WIRE 416 1136 256 1136 WIRE 160 1152 160 1040 WIRE 192 1152 160 1152 WIRE 304 1168 256 1168 WIRE 784 1184 784 1104 WIRE 224 1216 224 1184 WIRE 224 1216 192 1216 WIRE 704 1232 704 1024 WIRE -384 1248 -384 1216 WIRE -320 1248 -384 1248 WIRE 224 1248 224 1216 WIRE 192 1264 0 1264 WIRE -384 1280 -384 1248 WIRE -320 1280 -320 1248 WIRE 304 1280 304 1168 WIRE 304 1280 256 1280 WIRE 320 1280 304 1280 WIRE 352 1280 320 1280 WIRE 464 1280 432 1280 WIRE 528 1280 464 1280 WIRE 608 1280 608 1168 WIRE 608 1280 592 1280 WIRE 640 1280 608 1280 WIRE 192 1296 144 1296 WIRE 0 1312 0 1264 WIRE 224 1328 224 1312 WIRE 320 1328 320 1280 WIRE 464 1328 464 1280 WIRE -384 1392 -384 1360 WIRE 704 1392 704 1328 WIRE 464 1424 464 1392 WIRE 0 1440 0 1392 WIRE 144 1440 144 1296 WIRE 320 1440 320 1408 WIRE 320 1440 144 1440 WIRE 320 1472 320 1440 WIRE 320 1584 320 1552 FLAG -320 1280 0 FLAG 0 352 0 FLAG 0 1104 0 FLAG 784 1184 0 FLAG -384 1104 +V FLAG -384 1392 -V FLAG 272 352 +V FLAG 272 512 -V FLAG 224 1104 +V FLAG 0 1440 0 FLAG 832 896 out IOPIN 832 896 Out FLAG -288 704 +V FLAG -288 784 -V FLAG 0 672 0 FLAG -384 976 0 FLAG 320 1584 0 FLAG 224 1328 +V FLAG 192 1216 -V FLAG 704 1392 0 FLAG 464 1424 0 SYMBOL Misc\\EuropeanResistor 368 272 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 100k SYMBOL Misc\\EuropeanResistor 144 272 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 1Meg SYMBOL Misc\\EuropeanResistor 144 880 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R4 SYMATTR Value 1Meg SYMBOL Misc\\EuropeanResistor 336 880 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 100k SYMBOL Misc\\EuropeanResistor 560 704 M180 WINDOW 0 31 76 Left 2 WINDOW 3 31 40 Left 2 SYMATTR InstName R5 SYMATTR Value 0R5 SYMBOL voltage -384 1120 M0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value 34V SYMBOL voltage 0 944 M0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V2 SYMATTR Value 2.5V SYMBOL Misc\\EuropeanResistor 768 1120 M180 WINDOW 0 31 76 Left 2 WINDOW 3 31 40 Left 2 SYMATTR InstName RL1 SYMATTR Value R=if(time>1m&time<2m,1m,1G) SYMBOL voltage -384 1264 M0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V3 SYMATTR Value 3V SYMBOL npn 432 400 R0 SYMATTR InstName Q2 SYMATTR Value BD131 SYMBOL diode 176 944 M0 SYMATTR InstName D1 SYMATTR Value 1N4148 SYMBOL voltage 0 1296 M0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V4 SYMATTR Value 1V SYMBOL Opamps\\UniversalOpamp 224 1152 M0 SYMATTR InstName U1 SYMATTR Value2 Avol=1Meg GBW=1Meg Slew=1Meg SYMBOL Opamps\\UniversalOpamp 272 448 R0 SYMATTR InstName U2 SYMATTR Value2 Avol=1Meg GBW=1Meg Slew=1Meg SYMBOL Misc\\EuropeanPolcap 336 624 R0 SYMATTR InstName C1 SYMATTR Value 10µF SYMBOL Opamps\\UniversalOpamp -288 736 M0 SYMATTR InstName U3 SYMATTR Value2 Avol=1Meg GBW=1Meg Slew=1Meg SYMBOL Misc\\EuropeanResistor -240 608 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R9 SYMATTR Value 10k SYMBOL Misc\\EuropeanResistor -48 608 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R10 SYMATTR Value 10k SYMBOL Misc\\EuropeanResistor -160 880 M90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R11 SYMATTR Value 68k SYMBOL Misc\\EuropeanResistor -352 880 M90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R12 SYMATTR Value 12k SYMBOL Misc\\EuropeanResistor -160 736 M90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R13 SYMATTR Value 12k SYMBOL Misc\\EuropeanResistor 320 560 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R8 SYMATTR Value 1k SYMBOL diode 336 480 R0 SYMATTR InstName D3 SYMATTR Value 1N4148 SYMBOL Misc\\EuropeanResistor -176 768 M0 SYMATTR InstName R14 SYMATTR Value 1k8 SYMBOL Misc\\EuropeanResistor 336 1424 R180 WINDOW 0 31 76 Left 2 WINDOW 3 31 40 Left 2 SYMATTR InstName R6 SYMATTR Value 180k SYMBOL Misc\\EuropeanResistor 336 1568 R180 WINDOW 0 31 76 Left 2 WINDOW 3 31 40 Left 2 SYMATTR InstName R7 SYMATTR Value 20k SYMBOL Opamps\\UniversalOpamp 224 1280 M180 SYMATTR InstName U4 SYMATTR Value2 Avol=1Meg GBW=1Meg Slew=1Meg SYMBOL pnp 640 1328 M180 WINDOW 0 57 32 Left 2 WINDOW 3 56 68 Left 2 SYMATTR InstName Q1 SYMATTR Value BC327-25 SYMBOL Misc\\EuropeanResistor 448 1264 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R15 SYMATTR Value 1k SYMBOL Misc\\EuropeanPolcap 448 1328 R0 SYMATTR InstName C2 SYMATTR Value 10µF SYMBOL Misc\\EuropeanResistor 432 1024 R180 WINDOW 0 31 76 Left 2 WINDOW 3 31 40 Left 2 SYMATTR InstName R16 SYMATTR Value 100k SYMBOL diode 256 1024 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D2 SYMATTR Value 1N4148 SYMBOL schottky 592 1264 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D4 SYMATTR Value BAT54 SYMATTR Description Diode SYMATTR Type diode SYMBOL Misc\\EuropeanResistor 624 1184 R180 WINDOW 0 31 76 Left 2 WINDOW 3 31 40 Left 2 SYMATTR InstName R17 SYMATTR Value 10k TEXT -1184 1600 Left 2 !.tran 3m TEXT -48 1352 Right 2 ;Voltage Limit TEXT -48 1000 Right 2 ;Current Limit