Version 4 SHEET 1 3640 1556 WIRE 848 -720 800 -720 WIRE 1008 -720 928 -720 WIRE 1120 -720 1072 -720 WIRE 512 -608 240 -608 WIRE 672 -608 592 -608 WIRE 1072 -608 752 -608 WIRE 240 -576 240 -608 WIRE 512 -512 -992 -512 WIRE 800 -512 800 -720 WIRE 800 -512 592 -512 WIRE 912 -512 800 -512 WIRE 960 -512 912 -512 WIRE 1072 -512 1072 -608 WIRE 1072 -512 1024 -512 WIRE 1120 -512 1120 -720 WIRE 1120 -512 1072 -512 WIRE 1168 -512 1120 -512 WIRE 1296 -512 1232 -512 WIRE 2128 -512 1296 -512 WIRE 2256 -512 2128 -512 WIRE 2464 -512 2368 -512 WIRE 2640 -512 2592 -512 WIRE 2832 -512 2768 -512 WIRE 3056 -512 2992 -512 WIRE 2128 -496 2128 -512 WIRE 2256 -480 2256 -512 WIRE 2464 -480 2464 -512 WIRE 2640 -480 2640 -512 WIRE 2832 -480 2832 -512 WIRE 3056 -480 3056 -512 WIRE 1952 -432 1808 -432 WIRE 1952 -416 1952 -432 WIRE 2256 -384 2256 -416 WIRE 2464 -384 2464 -416 WIRE 2640 -384 2640 -416 WIRE 2832 -384 2832 -416 WIRE 3056 -384 3056 -416 WIRE 2128 -336 2128 -416 WIRE 1872 -320 1712 -320 WIRE 1952 -320 1952 -336 WIRE -80 -304 -208 -304 WIRE 96 -304 -16 -304 WIRE 2256 -288 2256 -320 WIRE 2464 -288 2464 -320 WIRE 2640 -288 2640 -320 WIRE 2832 -288 2832 -320 WIRE 3056 -288 3056 -320 WIRE 1808 -272 1808 -432 WIRE 1872 -256 1872 -320 WIRE 1872 -256 1840 -256 WIRE 576 -240 128 -240 WIRE 1488 -240 656 -240 WIRE 1712 -240 1712 -320 WIRE 1712 -240 1568 -240 WIRE 1776 -240 1712 -240 WIRE 2128 -224 2128 -272 WIRE 2128 -224 1840 -224 WIRE 2160 -224 2128 -224 WIRE 2256 -192 2256 -224 WIRE 2464 -192 2464 -224 WIRE 2640 -192 2640 -224 WIRE 2832 -192 2832 -224 WIRE 3056 -192 3056 -224 WIRE -208 -176 -208 -304 WIRE -160 -176 -208 -176 WIRE -16 -176 -80 -176 WIRE 96 -176 96 -304 WIRE 96 -176 48 -176 WIRE 432 -176 304 -176 WIRE 432 -144 432 -176 WIRE 1808 -128 1808 -208 WIRE 2256 -96 2256 -128 WIRE 2464 -96 2464 -128 WIRE 2640 -96 2640 -128 WIRE 2832 -96 2832 -128 WIRE 3056 -96 3056 -128 WIRE 656 -64 656 -112 WIRE 1296 -48 1296 -512 WIRE 432 -32 432 -64 WIRE -992 0 -992 -512 WIRE 2256 0 2256 -32 WIRE 2464 0 2464 -32 WIRE 2640 0 2640 -32 WIRE 2832 0 2832 -32 WIRE 3056 0 3056 -32 WIRE 304 16 304 -176 WIRE 912 32 912 -512 WIRE -208 80 -208 -176 WIRE 128 80 128 -240 WIRE 128 80 -208 80 WIRE 144 80 128 80 WIRE 3056 96 3056 64 WIRE 512 112 464 112 WIRE 704 112 512 112 WIRE 816 112 784 112 WIRE 864 112 816 112 WIRE 2256 112 2256 64 WIRE 2368 112 2368 -512 WIRE 2368 112 2256 112 WIRE 2464 112 2464 64 WIRE 2592 112 2592 -512 WIRE 2592 112 2464 112 WIRE 2640 112 2640 64 WIRE 2768 112 2768 -512 WIRE 2768 112 2640 112 WIRE 2832 112 2832 64 WIRE 2992 112 2992 -512 WIRE 2992 112 2832 112 WIRE 2160 128 2160 -224 WIRE 96 144 96 -176 WIRE 144 144 96 144 WIRE 816 160 816 112 WIRE 3056 192 3056 160 WIRE -240 208 -240 176 WIRE -240 208 -480 208 WIRE -16 208 -240 208 WIRE 96 208 -16 208 WIRE 144 208 96 208 WIRE 576 240 464 240 WIRE -16 256 -16 208 WIRE 816 256 816 240 WIRE 144 272 48 272 WIRE -480 304 -480 208 WIRE -512 336 -576 336 WIRE -288 336 -432 336 WIRE 576 336 576 240 WIRE 656 336 656 16 WIRE 656 336 576 336 WIRE 736 336 656 336 WIRE 912 336 912 128 WIRE 912 336 816 336 WIRE -512 368 -640 368 WIRE -16 368 -16 336 WIRE -16 368 -160 368 WIRE 48 368 48 272 WIRE 48 368 -16 368 WIRE 912 384 912 336 WIRE -16 400 -16 368 WIRE 96 400 96 208 WIRE -160 416 -160 368 WIRE 576 416 576 336 WIRE -496 464 -496 400 WIRE -480 464 -480 400 WIRE -480 464 -496 464 WIRE -464 464 -464 400 WIRE -464 464 -480 464 WIRE -576 480 -576 336 WIRE -288 496 -288 336 WIRE -208 496 -288 496 WIRE 2160 560 2160 208 WIRE 3056 560 3056 256 WIRE 3056 560 2160 560 WIRE 3056 608 3056 560 WIRE -992 736 -992 80 WIRE -576 736 -576 560 WIRE -576 736 -992 736 WIRE -480 736 -480 464 WIRE -480 736 -576 736 WIRE -160 736 -160 512 WIRE -160 736 -480 736 WIRE -16 736 -16 464 WIRE -16 736 -160 736 WIRE 96 736 96 464 WIRE 96 736 -16 736 WIRE 304 736 304 336 WIRE 304 736 96 736 WIRE 576 736 576 480 WIRE 576 736 304 736 WIRE 912 736 912 464 WIRE 912 736 576 736 WIRE 1296 736 1296 16 WIRE 1296 736 912 736 WIRE 3056 736 3056 688 WIRE 3056 736 1296 736 WIRE 304 768 304 736 WIRE -640 848 -640 368 WIRE 512 848 512 112 WIRE 512 848 -640 848 FLAG 432 -32 0 FLAG 304 768 0 FLAG 816 256 0 FLAG 656 -112 vref FLAG -240 176 vref FLAG 240 -576 0 FLAG 1808 -128 0 FLAG 1952 -320 0 SYMBOL Comparators\\LT1713 -480 352 R0 SYMATTR InstName U3 SYMBOL nmos 864 32 R0 SYMATTR InstName M1 SYMATTR Value BSZ900N15NS3 SYMBOL PowerProducts\\LT1243 304 176 R0 SYMATTR InstName U1 SYMBOL res 800 144 R0 SYMATTR InstName R1 SYMATTR Value 33k SYMBOL res 800 96 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 1 SYMBOL res 0 352 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R3 SYMATTR Value 1k5 SYMBOL res 928 480 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R4 SYMATTR Value 0.62 SYMBOL res 720 352 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R5 SYMATTR Value 510 SYMBOL cap 80 400 R0 SYMATTR InstName C1 SYMATTR Value 3µ3 SYMATTR SpiceLine Rser=0.04 SYMBOL cap -32 400 R0 SYMATTR InstName C2 SYMATTR Value 470p SYMATTR SpiceLine Rser=0.04 SYMBOL cap 560 416 R0 SYMATTR InstName C3 SYMATTR Value 220p SYMATTR SpiceLine Rser=0.04 SYMBOL voltage 432 -160 R0 WINDOW 123 0 0 Left 2 WINDOW 39 24 44 Left 2 SYMATTR SpiceLine Rser=0.1 SYMATTR InstName V1 SYMATTR Value 10 SYMBOL schottky 1168 -496 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D1 SYMATTR Value MBRS1100 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap 1280 -48 R0 SYMATTR InstName C4 SYMATTR Value 4µ7 SYMATTR SpiceLine Rser=0.04 SYMBOL LED 2240 -192 R0 SYMATTR InstName D2 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL res 3040 592 R0 SYMATTR InstName R6 SYMATTR Value 50 SYMBOL res -64 -192 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R7 SYMATTR Value 510 SYMBOL cap 48 -192 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C5 SYMATTR Value 10n SYMATTR SpiceLine Rser=0.04 SYMBOL cap -16 -320 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C6 SYMATTR Value 220p SYMATTR SpiceLine Rser=0.04 SYMBOL ind2 496 -496 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 270µ SYMATTR SpiceLine Rser=0.461 SYMATTR Type ind SYMBOL LED 2240 -96 R0 SYMATTR InstName D3 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 2240 0 R0 SYMATTR InstName D4 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 2240 -480 R0 SYMATTR InstName D5 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 2240 -384 R0 SYMATTR InstName D6 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 2240 -288 R0 SYMATTR InstName D7 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 2448 -192 R0 SYMATTR InstName D8 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 2448 -96 R0 SYMATTR InstName D9 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 2448 0 R0 SYMATTR InstName D10 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 2448 -480 R0 SYMATTR InstName D11 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 2448 -384 R0 SYMATTR InstName D12 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 2448 -288 R0 SYMATTR InstName D13 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 2624 -192 R0 SYMATTR InstName D14 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 2624 -96 R0 SYMATTR InstName D15 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 2624 0 R0 SYMATTR InstName D16 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 2624 -480 R0 SYMATTR InstName D17 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 2624 -384 R0 SYMATTR InstName D18 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 2624 -288 R0 SYMATTR InstName D19 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 3040 -192 R0 SYMATTR InstName D20 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 3040 -96 R0 SYMATTR InstName D21 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 3040 0 R0 SYMATTR InstName D22 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 3040 -480 R0 SYMATTR InstName D23 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 3040 -384 R0 SYMATTR InstName D24 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 3040 -288 R0 SYMATTR InstName D25 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 3040 96 R0 SYMATTR InstName D26 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 3040 192 R0 SYMATTR InstName D27 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL res 672 -256 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R8 SYMATTR Value 22k SYMBOL voltage -576 464 R0 WINDOW 123 0 0 Left 2 WINDOW 39 24 124 Left 2 SYMATTR SpiceLine Rser=0.1 SYMATTR InstName V3 SYMATTR Value 2.5 SYMBOL nmos -208 416 R0 SYMATTR InstName M2 SYMATTR Value 2N7002 SYMBOL res 640 -80 R0 SYMATTR InstName R9 SYMATTR Value 5k1 SYMBOL res 2144 112 R0 SYMATTR InstName R10 SYMATTR Value 1k SYMBOL res 2112 -512 R0 SYMATTR InstName R11 SYMATTR Value 5k1 SYMBOL cap 2112 -336 R0 SYMATTR InstName C7 SYMATTR Value 220n SYMATTR SpiceLine Rser=0.04 SYMBOL cap 1024 -528 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C9 SYMATTR Value 2µ2 SYMATTR SpiceLine Rser=0.04 SYMBOL ind2 496 -592 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 4 56 VBottom 2 SYMATTR InstName L2 SYMATTR Value 270µ SYMATTR SpiceLine Rser=0.461 SYMATTR Type ind SYMBOL LED 2816 -192 R0 SYMATTR InstName D29 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 2816 -96 R0 SYMATTR InstName D30 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 2816 0 R0 SYMATTR InstName D31 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 2816 -480 R0 SYMATTR InstName D32 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 2816 -384 R0 SYMATTR InstName D33 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 2816 -288 R0 SYMATTR InstName D34 SYMATTR Value AOT-2015 SYMATTR Description Diode SYMATTR Type diode SYMBOL res 944 -736 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R12 SYMATTR Value 15 SYMBOL cap 1072 -736 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C10 SYMATTR Value 2µ2 SYMATTR SpiceLine Rser=0.04 SYMBOL res 768 -624 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R13 SYMATTR Value 2.2 SYMBOL voltage -992 -16 R0 WINDOW 123 0 0 Left 2 WINDOW 39 24 124 Left 2 SYMATTR SpiceLine Rser=0.04 SYMATTR InstName V2 SYMATTR Value 12 SYMBOL Opamps\\LT1006 1808 -304 M0 SYMATTR InstName U2 SYMBOL voltage 1952 -432 R0 WINDOW 123 0 0 Left 2 WINDOW 39 24 44 Left 2 SYMATTR SpiceLine Rser=.02 SYMATTR InstName V4 SYMATTR Value 10 SYMBOL res 1584 -256 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R14 SYMATTR Value 50 TEXT 576 792 Left 2 !.tran 0 60m 0 startup TEXT -728 896 Left 5 ;OFF-TIME\nCOMPARATOR TEXT 344 -568 Left 3 ;Uncoupled. TEXT 2592 240 Left 5 ;LAMP TEXT 2888 424 Left 5 ;50mA TEXT 1360 -144 Left 5 ;Loop injection\npoint resistor. TEXT 1112 -448 Left 2 ;Higher voltage\ndiode would be\nused.