Version 4 SHEET 1 1680 776 WIRE 32 -720 -272 -720 WIRE 528 -720 128 -720 WIRE 624 -720 528 -720 WIRE 800 -720 704 -720 WIRE 976 -720 800 -720 WIRE 1232 -720 976 -720 WIRE 1280 -720 1232 -720 WIRE -144 -576 -192 -576 WIRE -16 -576 -144 -576 WIRE 80 -576 80 -656 WIRE 528 -560 528 -720 WIRE -144 -368 -144 -576 WIRE -96 -368 -144 -368 WIRE 32 -368 32 -512 WIRE 32 -368 -16 -368 WIRE 176 -368 32 -368 WIRE 384 -352 384 -368 WIRE 528 -336 528 -480 WIRE 528 -336 416 -336 WIRE 352 -320 240 -320 WIRE 800 -304 800 -720 WIRE 800 -304 416 -304 WIRE 384 -272 384 -288 WIRE 1232 -272 1232 -720 WIRE 176 -240 176 -272 WIRE 528 -192 528 -336 WIRE 528 -48 528 -112 WIRE 800 -48 800 -304 WIRE 32 16 32 -368 WIRE 176 16 32 16 WIRE -272 48 -272 -720 WIRE -272 48 -416 48 WIRE 800 48 800 32 WIRE 800 48 416 48 WIRE 976 48 976 -720 WIRE 1072 48 976 48 WIRE 352 64 240 64 WIRE 800 64 800 48 WIRE 528 80 416 80 WIRE -640 128 -640 48 WIRE -272 128 -272 48 WIRE -416 144 -416 48 WIRE 176 144 176 112 WIRE 976 144 976 48 WIRE 1072 144 1072 48 WIRE 528 160 528 80 WIRE -640 256 -640 208 WIRE -640 256 -672 256 WIRE -416 256 -416 208 WIRE -416 256 -640 256 WIRE -272 256 -272 208 WIRE -272 256 -416 256 WIRE 384 256 384 96 WIRE 384 256 -272 256 WIRE 528 256 528 240 WIRE 528 256 384 256 WIRE 800 256 800 144 WIRE 800 256 528 256 WIRE 976 256 976 208 WIRE 976 256 800 256 WIRE 1072 256 1072 208 WIRE 1072 256 976 256 WIRE 1232 256 1232 -192 WIRE 1232 256 1072 256 WIRE -640 288 -640 256 WIRE -272 288 -272 256 WIRE -416 304 -416 256 WIRE -640 448 -640 368 WIRE -416 448 -416 368 WIRE -272 448 -272 368 WIRE -272 448 -416 448 FLAG -672 256 0 FLAG -640 48 Vcc FLAG 1280 -720 Output FLAG -640 448 Vss FLAG -192 -576 Vcc FLAG 384 -368 Vcc FLAG 384 32 Vcc FLAG 384 -272 0 FLAG 528 -48 0 FLAG 176 -240 0 FLAG 176 144 0 SYMBOL voltage -272 112 R0 WINDOW 123 0 0 Left 2 WINDOW 39 24 124 Left 2 SYMATTR InstName V1 SYMATTR Value 16.2 SYMATTR SpiceLine Rser=0.02 SYMBOL voltage -272 272 R0 WINDOW 123 0 0 Left 2 WINDOW 39 24 124 Left 2 SYMATTR InstName V2 SYMATTR Value 16.2 SYMATTR SpiceLine Rser=0.02 SYMBOL npn3 -16 -512 R270 SYMATTR InstName Q1 SYMATTR Value 2N4401 SYMBOL res 720 -736 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 0.1 SYMBOL cap 1056 144 R0 SYMATTR InstName C1 SYMATTR Value 470µF SYMATTR SpiceLine Rser=0.5 SYMBOL res -112 -352 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R2 SYMATTR Value 1k SYMBOL voltage 528 144 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName Voltage_set SYMATTR Value 3V SYMBOL res 1216 -288 R0 SYMATTR InstName Rload SYMATTR Value 1 SYMBOL cap -432 144 R0 SYMATTR InstName C2 SYMATTR Value 10,000u SYMBOL cap -432 304 R0 SYMATTR InstName C3 SYMATTR Value 10,000u SYMBOL cap 960 144 R0 SYMATTR InstName C4 SYMATTR Value 1µF SYMBOL res 784 48 R0 SYMATTR InstName R3 SYMATTR Value 1k SYMBOL res 784 -64 R0 SYMATTR InstName R4 SYMATTR Value 2k SYMBOL pnp2 240 -272 R180 SYMATTR InstName Q4 SYMATTR Value 2N2907 SYMBOL voltage -640 112 R0 WINDOW 0 -125 58 Left 2 WINDOW 3 36 45 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 34 72 Left 2 SYMATTR InstName Aux_V5 SYMATTR Value 25 SYMATTR SpiceLine Rser=1 SYMBOL voltage -640 272 R0 WINDOW 0 -124 55 Left 2 WINDOW 3 34 37 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 34 67 Left 2 SYMATTR InstName Aux_V6 SYMATTR Value 25 SYMATTR SpiceLine Rser=1 SYMBOL npn3 32 -656 R270 SYMATTR InstName Q3 SYMATTR Value 2N3055 SYMBOL pnp2 240 112 R180 SYMATTR InstName Q2 SYMATTR Value 2N2907 SYMBOL res 512 -576 R0 SYMATTR InstName R5 SYMATTR Value 100 SYMBOL current 528 -192 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName Current-Set SYMATTR Value 1mA SYMBOL Opamps\\LT1014A 384 -384 M0 SYMATTR InstName U1 SYMBOL Opamps\\LT1014A 384 0 M0 SYMATTR InstName U2 TEXT 12 374 Left 2 !.tran 1 startup uic TEXT 560 -152 Left 2 ;1000:1 current ratio TEXT 568 200 Left 2 ;3:1 voltage ratio