Version 4 SHEET 1 1268 680 WIRE -768 -224 -768 -288 WIRE -512 -224 -768 -224 WIRE -384 -224 -416 -224 WIRE -64 -224 -384 -224 WIRE 96 -224 -64 -224 WIRE 224 -224 176 -224 WIRE 256 -224 224 -224 WIRE 528 -224 320 -224 WIRE 640 -224 528 -224 WIRE 736 -224 640 -224 WIRE 736 -192 736 -224 WIRE -768 -160 -768 -224 WIRE -704 -160 -768 -160 WIRE -496 -160 -496 -176 WIRE -496 -160 -624 -160 WIRE -64 -128 -64 -224 WIRE 736 -112 736 -128 WIRE -384 -64 -384 -224 WIRE 640 -64 640 -224 WIRE -768 -48 -768 -160 WIRE -736 -48 -768 -48 WIRE -624 -48 -656 -48 WIRE 224 -48 224 -224 WIRE 224 -48 64 -48 WIRE 736 -32 736 -48 WIRE 528 0 528 -224 WIRE -624 16 -624 -48 WIRE 272 16 64 16 WIRE -768 64 -768 -48 WIRE 736 64 736 32 WIRE 144 80 64 80 WIRE -624 96 -624 80 WIRE -608 96 -624 96 WIRE -384 96 -384 16 WIRE -384 96 -544 96 WIRE 144 96 144 80 WIRE 528 112 528 64 WIRE 528 112 320 112 WIRE -496 128 -496 -160 WIRE 640 160 640 0 WIRE 736 160 736 128 WIRE 736 160 720 160 WIRE -624 176 -624 96 WIRE -560 176 -624 176 WIRE 320 176 320 112 WIRE 144 192 144 176 WIRE -624 224 -624 176 WIRE 576 224 528 224 WIRE 576 240 576 224 WIRE 736 256 736 160 WIRE -64 272 -64 160 WIRE 144 272 144 256 WIRE 528 288 528 224 WIRE 640 304 640 160 WIRE 640 304 560 304 WIRE 272 320 272 16 WIRE 304 320 272 320 WIRE 416 320 384 320 WIRE 496 320 416 320 WIRE 608 336 560 336 WIRE -768 352 -768 144 WIRE -624 352 -624 304 WIRE -624 352 -768 352 WIRE -496 352 -496 224 WIRE -496 352 -624 352 WIRE 736 368 736 336 WIRE -768 400 -768 352 WIRE 416 464 416 320 WIRE 496 464 416 464 WIRE 608 464 608 336 WIRE 608 464 576 464 WIRE 608 496 608 464 WIRE 608 640 608 576 FLAG -64 272 0 FLAG 320 176 0 FLAG 736 368 0 FLAG 528 352 +U FLAG 608 640 0 FLAG 576 240 0 FLAG 144 272 0 FLAG -768 400 0 FLAG -768 -288 +U SYMBOL ind 80 -208 R270 WINDOW 0 34 55 VTop 0 WINDOW 3 5 56 VBottom 0 SYMATTR InstName L1 SYMATTR Value 110µ SYMBOL cap 512 0 R0 SYMATTR InstName C2 SYMATTR Value 220µ SYMBOL schottky 256 -208 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName D1 SYMATTR Value 1N5819 SYMATTR Description Diode SYMATTR Type diode SYMBOL res 720 240 R0 SYMATTR InstName R2 SYMATTR Value 250m SYMBOL res 480 480 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R3 SYMATTR Value 60k SYMBOL res 592 480 R0 SYMATTR InstName R4 SYMATTR Value 10k SYMBOL LED 720 64 R0 SYMATTR InstName D3 SYMATTR Value LXK2-PW14 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 720 -32 R0 SYMATTR InstName D2 SYMATTR Value LXK2-PW14 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 720 -112 R0 SYMATTR InstName D4 SYMATTR Value LXK2-PW14 SYMATTR Description Diode SYMATTR Type diode SYMBOL LED 720 -192 R0 SYMATTR InstName D5 SYMATTR Value LXK2-PW14 SYMATTR Description Diode SYMATTR Type diode SYMBOL res 128 80 R0 SYMATTR InstName R1 SYMATTR Value 1k SYMBOL cap 128 192 R0 SYMATTR InstName C1 SYMATTR Value 1µ SYMBOL Opamps\\LT1006 528 384 R180 SYMATTR InstName U3 SYMBOL PowerProducts\\LT1172 -64 16 R0 SYMATTR InstName U1 SYMBOL pmos -416 -176 M270 SYMATTR InstName M1 SYMATTR Value IRF7220 SYMBOL res -608 -176 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R5 SYMATTR Value 100k SYMBOL npn -560 128 R0 SYMATTR InstName Q1 SYMATTR Value BC547B SYMBOL res -640 -64 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R6 SYMATTR Value 50k SYMBOL res -640 208 R0 SYMATTR InstName R7 SYMATTR Value 100k SYMBOL voltage -768 48 R0 WINDOW 123 0 0 Left 0 WINDOW 39 24 132 Left 0 SYMATTR SpiceLine Rser=50m SYMATTR InstName V1 SYMATTR Value PULSE(7 5 0 1 1 0 2 2) SYMBOL res -400 -80 R0 SYMATTR InstName R8 SYMATTR Value 1.2MEG SYMBOL diode -544 80 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName D6 SYMATTR Value 1N4148 SYMBOL zener -608 80 R180 WINDOW 0 26 63 Left 0 WINDOW 3 -129 61 Left 0 SYMATTR InstName D7 SYMATTR Value BZX84C6V2L SYMATTR Description Diode SYMATTR Type diode SYMBOL zener 656 0 R180 WINDOW 0 24 72 Left 0 WINDOW 3 -35 104 Left 0 SYMATTR InstName D8 SYMATTR Value BZX84C15L SYMATTR Description Diode SYMATTR Type diode SYMBOL res 400 304 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R9 SYMATTR Value 1k SYMBOL res 736 144 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R10 SYMATTR Value 1k TEXT -552 -392 Left 0 !.params Uvar = 8 TEXT -552 -360 Left 0 !.include IRF4905.lib TEXT -776 464 Left 0 !.tran 0 2 0