$ 1 5.0E-6 10.20027730826997 50 5.0 50
a 544 368 464 368 1 15.0 -15.0 1000000.0
r 464 368 416 368 0 10000.0
t 416 368 384 368 0 1 0.6011250698599145 0.617528967699439 100.0
v 544 448 544 384 0 0 40.0 2.5 0.0 0.0 0.5
w 384 384 384 448 0
w 384 448 464 448 0
w 464 448 544 448 0
w 544 352 592 352 0
f 384 272 448 272 1 1.5
x 423 424 496 430 0 24 TL431
x 270 436 307 442 0 24 ON
x 611 442 658 448 0 24 OFF
w 448 192 384 192 0
w 384 192 320 192 0
w 320 192 192 192 0
172 192 192 128 192 0 6 12.600000000000001 35.0 -5.0 0.0 0.5 input voltage
x 143 46 609 52 0 24 Low voltage cutoff (5-36V) using TL431
x 473 270 595 276 0 24 P-MOSFET
x 142 97 541 101 0 16 + Built-in switch buttons and optional indicator LED
x 692 343 709 346 0 10 50k
x 693 357 737 360 0 10 multiturn
x 438 244 445 247 0 10 S
x 442 303 450 306 0 10 D
w 448 288 640 288 0
w 768 288 848 288 0
w 448 256 448 192 0
w 384 448 320 448 0
d 368 384 368 352 1 0.805904783
w 368 352 384 352 0
w 368 384 384 384 0
x 143 115 769 119 0 16 + Short circuit protection (short circuit causes voltage drop that triggers cutoff)
x 143 133 663 137 0 16 + Reverse voltage protection (unless you use MOSFET with diode!)
w 688 288 768 288 0
w 640 288 656 288 0
174 704 192 640 192 0 500000.0 0.49010000000000004 reconnect hysteresis
w 672 208 672 240 0
x 660 175 683 178 0 10 500k
x 693 175 857 179 0 16 reconnect hysteresis
x 692 375 739 379 0 16 cutoff
w 704 192 704 272 0
w 672 240 672 272 0
w 608 192 464 192 0
x 734 197 807 201 0 16 (optional)
x 148 503 820 507 0 16 If you want automatic reconnect with hysteresis, just add another pot across MOSFET
x 147 523 878 527 0 16 and connect cutoff pot to it's wiper instead of + rail (as illustrated). This overrides OFF switch.
x 142 150 654 154 0 16 + Possibility to add automatic reconnect with hysteresis if needed
x 142 79 820 83 0 16 + Only 6 components for basic setup!!! (without OFF button, LED and auto reconnect)
r 384 272 384 192 0 5000.0
w 384 352 384 320 0
w 384 320 384 272 0
w 656 288 672 288 0
w 672 288 688 288 0
w 640 192 608 192 0
w 384 320 320 320 0
r 592 352 640 352 0 3600.0
174 672 336 640 368 0 50000.0 0.401 cutoff voltage
w 672 336 672 288 0
w 672 368 672 448 0
s 592 352 592 448 0 1 true
w 672 448 592 448 0
w 592 448 544 448 0
r 768 288 768 368 0 3600.0
162 768 368 768 448 1 2.1024259 1.0 0.0 0.0
w 768 448 848 448 0
w 768 448 672 448 0
w 320 448 192 448 0
g 192 448 144 448 0
s 320 352 320 448 0 1 true
w 320 320 320 352 0
x 148 542 865 546 0 16 By using low-power LMV413 instead of TL431 you can use 80k series resistor instead of 5k.
o 14 64 0 289 10.0 0.0125 0 -1
o 8 64 0 35 0.15625 0.00625 1 -1
o 7 64 0 35 10.0 9.765625E-5 2 -1