electronics/batteries/low-voltage-shutdown3.circuit

   1 $ 1 5.0E-6 10.20027730826997 50 5.0 50
   2 a 560 448 480 448 1 15.0 -15.0 1000000.0
   3 r 480 448 432 448 0 10000.0
   4 t 432 448 400 448 0 1 0.5840002821592403 0.5843255822607052 100.0
   5 v 560 528 560 464 0 0 40.0 2.5 0.0 0.0 0.5
   6 w 400 464 400 528 0
   7 w 400 528 480 528 0
   8 w 480 528 560 528 0
   9 w 560 432 608 432 0
  10 174 656 384 608 480 0 500000.0 0.2822 Resistance
  11 f 400 352 464 352 1 1.5
  12 s 336 368 336 464 0 1 true
  13 s 336 272 336 352 0 1 true
  14 w 400 352 336 352 0
  15 x 439 504 512 510 0 24 TL431
  16 x 256 402 293 408 0 24 ON
  17 x 255 311 302 317 0 24 OFF
  18 w 464 272 400 272 0
  19 w 400 272 336 272 0
  20 w 336 272 208 272 0
  21 172 208 272 144 272 0 6 5.0 5.0 0.0 0.0 0.5 Voltage
  22 g 208 592 160 592 0
  23 w 656 592 400 592 0
  24 w 400 592 336 592 0
  25 w 336 592 208 592 0
  26 w 656 592 784 592 0
  27 w 784 592 864 592 0
  28 x 259 191 725 197 0 24 Low voltage cutoff (3-36V) using TL431
  29 x 489 350 611 356 0 24 P-MOSFET
  30 x 191 654 828 660 0 24 You can omit 1k resistor if you don't need OFF switch
  31 x 211 229 784 235 0 24 Built in switch buttons and zero off state current
  32 x 675 428 714 432 0 16 500k
  33 x 676 446 746 450 0 16 multiturn
  34 x 454 324 461 327 0 10 S
  35 x 458 383 466 386 0 10 D
  36 w 464 368 656 368 0
  37 w 656 368 656 384 0
  38 w 656 368 784 368 0
  39 r 784 368 784 480 0 100.0
  40 w 784 368 864 368 0
  41 w 400 352 400 432 0
  42 r 400 528 400 592 0 1000.0
  43 r 400 352 400 272 0 1000000.0
  44 w 464 336 464 272 0
  45 162 784 480 784 592 1 2.1024259 1.0 0.0 0.0
  46 w 656 480 656 592 0
  47 w 336 528 336 448 0
  48 w 400 528 336 528 0