notes/Areas/upv/classes/analog-electricity/task-project.md

# Lux Meter

We want to create a lux meter with a output voltage of $0V \le V_O \le 5V$.

```circuitjs
$ 1 0.000005 310.77885238917384 50 5 43 5e-11
R 144 176 144 96 0 0 40 10 0 0 0.5
w 144 176 96 176 0
w 144 176 192 176 0
r 96 176 96 304 0 250000.5
r 192 176 192 272 0 250000.5
w 96 304 272 304 0
w 192 272 272 272 0
374 192 272 192 416 0 0.0001 Light\sBrightness
r 96 304 96 416 0 250000.5
g 96 416 96 480 0 0
g 192 416 192 480 0 0
r 272 272 368 272 0 1000
r 272 304 368 304 0 1000
w 368 304 368 352 0
w 368 352 336 352 0
w 368 352 400 352 0
r 336 352 336 448 0 1000
c 400 352 400 448 0 0.00001 0.03937000124011876 0.001
w 336 448 368 448 0
w 368 448 400 448 0
g 368 448 368 480 0 0
w 528 288 528 192 0
r 528 192 368 192 0 1000
w 368 192 368 272 0
c 368 128 528 128 0 0.00001 0.03890407578567912 0.001
w 528 192 528 128 0
w 368 128 368 192 0
b 272 64 568 521 0
b 16 64 251 520 0
x 25 91 91 94 4 24 Signal
x 278 91 394 94 4 24 LPF\s/\sAMP
b 581 64 797 521 0
x 594 95 675 98 4 24 Inverter
w 528 288 592 288 2
r 592 288 656 288 0 1000
w 656 320 656 352 0
g 656 352 656 384 0 0
w 656 288 656 224 0
r 656 224 768 224 0 1000
w 768 224 768 304 0
a 368 288 528 288 8 15 -15 1000000 0.0393699965809108 0.03937000124011876 100000
a 656 304 768 304 8 15 -15 1000000 4.659114770021441e-9 0 100000
O 912 304 976 304 1 0
w 768 304 912 304 0
b 292 330 460 515 0
x 300 345 324 348 4 12 HPF
38 3 F1 0 1 500000 -1 Rs
38 8 F1 0 1 500000 0 \0
38 4 F1 0 1 500000 0 \0
```


# Design 2

```circuitjs
$ 1 0.000005 10.20027730826997 50 5 43 5e-11
g -80 272 -80 304 0 0
v -80 272 -80 176 0 0 40 10 0 0 0.5
w -80 176 32 176 0
w 32 176 32 192 0
w 32 192 0 192 0
w 32 192 64 192 0
r 0 192 0 288 0 251000
r 0 288 0 368 0 251000
r 64 192 64 256 0 251000
w 64 368 32 368 0
w 0 368 32 368 0
w 32 368 32 384 0
g 32 384 32 416 0 0
w 0 288 160 288 0
w 64 256 160 256 0
w 160 256 160 208 2
w 160 288 160 304 2
w 160 208 256 208 0
w 160 304 256 304 0
a 256 224 368 224 9 10 -10 1000000 2.115054761480507 2.115075912028122 100000
a 256 320 368 320 9 10 -10 1000000 4.999950000499995 5 100000
w 256 240 256 272 0
w 256 272 368 272 0
w 368 224 368 272 0
w 256 368 368 368 0
w 256 336 256 368 0
w 368 368 368 320 0
w 368 320 448 320 0
w 368 272 448 272 0
r 448 272 528 272 0 1000
r 448 320 528 320 0 1000
w 528 320 528 304 0
w 528 176 528 272 0
a 528 288 640 288 9 10 -10 1000000 1.0928261699808117 1.0927953310887633 100000
w 528 320 528 368 0
r 528 368 640 368 0 1069
c 528 416 640 416 0 0.000001 4.17671537481608 0.001
w 528 368 528 416 0
w 640 416 640 368 0
w 640 368 640 288 0
c 528 128 640 128 0 0.000001 1.0927953310887633 0.001
r 528 176 640 176 0 1069
w 528 176 528 128 0
w 640 128 640 176 0
g 640 176 640 192 0 0
O 640 288 704 288 1 0
b -48 80 112 455 0
x -42 107 46 110 4 24 SIGNAL
x 127 106 239 109 4 24 BUFFERS
b 119 80 439 455 0
b 448 82 768 457 0
x 456 108 676 111 4 24 INV-DIF-AMPLIFIER
374 64 256 64 368 0 0.32680000000000003 Light\sBrightness
```