electronics/batteries/low-voltage-shutdown3.circuit

   1 $ 1 5.0E-6 10.20027730826997 50 5.0 50
   2 a 560 352 480 352 1 15.0 -15.0 1000000.0
   3 r 480 352 432 352 0 10000.0
   4 t 432 352 400 352 0 1 0.601184086398944 0.6160027948929502 100.0
   5 v 560 432 560 368 0 0 40.0 2.5 0.0 0.0 0.5
   6 w 400 368 400 432 0
   7 w 400 432 480 432 0
   8 w 480 432 560 432 0
   9 w 560 336 608 336 0
  10 f 400 256 464 256 1 1.5
  11 x 439 408 512 414 0 24 TL431
  12 x 286 420 323 426 0 24 ON
  13 x 627 426 674 432 0 24 OFF
  14 w 464 176 400 176 0
  15 w 400 176 336 176 0
  16 w 336 176 208 176 0
  17 172 208 176 144 176 0 6 11.0 35.0 -5.0 0.0 0.5 input voltage
  18 x 159 30 625 36 0 24 Low voltage cutoff (5-36V) using TL431
  19 x 489 254 611 260 0 24 P-MOSFET
  20 x 158 81 557 85 0 16 + Built-in switch buttons and optional indicator LED
  21 x 708 327 725 330 0 10 50k
  22 x 709 341 753 344 0 10 multiturn
  23 x 454 228 461 231 0 10 S
  24 x 458 287 466 290 0 10 D
  25 w 464 272 656 272 0
  26 w 784 272 864 272 0
  27 w 464 240 464 176 0
  28 w 400 432 336 432 0
  29 d 384 368 384 336 1 0.805904783
  30 w 384 336 400 336 0
  31 w 384 368 400 368 0
  32 x 159 99 785 103 0 16 + Short circuit protection (short circuit causes voltage drop that triggers cutoff)
  33 x 159 117 679 121 0 16 + Reverse voltage protection (unless you use MOSFET with diode!)
  34 w 704 272 784 272 0
  35 w 656 272 672 272 0
  36 174 720 176 656 176 0 500000.0 0.49010000000000004 reconnect hysteresis
  37 w 688 192 688 224 0
  38 x 676 159 699 162 0 10 500k
  39 x 709 159 873 163 0 16 reconnect hysteresis
  40 x 708 359 755 363 0 16 cutoff
  41 w 720 176 720 256 0
  42 w 688 224 688 256 0
  43 w 624 176 480 176 0
  44 x 750 181 823 185 0 16 (optional)
  45 x 164 487 836 491 0 16 If you want automatic reconnect with hysteresis, just add another pot across MOSFET
  46 x 163 507 894 511 0 16 and connect cutoff pot to it's wiper instead of + rail (as illustrated). This overrides OFF switch.
  47 x 158 134 670 138 0 16 + Possibility to add automatic reconnect with hysteresis if needed
  48 x 158 63 836 67 0 16 + Only 6 components for basic setup!!! (without OFF button, LED and auto reconnect)
  49 r 400 256 400 176 0 5000.0
  50 w 400 336 400 304 0
  51 w 400 304 400 256 0
  52 w 672 272 688 272 0
  53 w 688 272 704 272 0
  54 w 656 176 624 176 0
  55 w 400 304 336 304 0
  56 r 608 336 656 336 0 3600.0
  57 174 688 320 656 352 0 50000.0 0.401 cutoff voltage
  58 w 688 320 688 272 0
  59 w 688 352 688 432 0
  60 s 608 336 608 432 0 1 true
  61 w 688 432 608 432 0
  62 w 608 432 560 432 0
  63 r 784 272 784 352 0 3600.0
  64 162 784 352 784 432 1 2.1024259 1.0 0.0 0.0
  65 w 784 432 864 432 0
  66 w 784 432 688 432 0
  67 w 336 432 208 432 0
  68 g 208 432 160 432 0
  69 s 336 336 336 432 0 1 true
  70 w 336 304 336 336 0
  71 o 14 64 0 289 10.0 0.0125 0 -1
  72 o 8 64 0 35 0.15625 0.003125 1 -1
  73 o 7 64 0 35 10.0 9.765625E-5 2 -1