From: Tomas Mudrunka Date: Sat, 13 Aug 2016 19:52:19 +0000 (+0200) Subject: hysteresis X-Git-Url: https://git.harvie.cz/?a=commitdiff_plain;h=7e4c44b061d8115f5dfd00709962e5fc9282ccd0;p=mirrors%2FDesigns.git hysteresis --- diff --git a/electronics/batteries/low-voltage-shutdown3.circuit b/electronics/batteries/low-voltage-shutdown3.circuit index d2e139f..cfbef83 100644 --- a/electronics/batteries/low-voltage-shutdown3.circuit +++ b/electronics/batteries/low-voltage-shutdown3.circuit @@ -1,57 +1,74 @@ $ 1 5.0E-6 10.20027730826997 50 5.0 50 -a 560 400 480 400 1 15.0 -15.0 1000000.0 -r 480 400 432 400 0 10000.0 -t 432 400 400 400 0 1 0.6010861572617257 0.6015469424280533 100.0 -v 560 480 560 416 0 0 40.0 2.5 0.0 0.0 0.5 -w 400 416 400 480 0 -w 400 480 480 480 0 -w 480 480 560 480 0 -w 560 384 608 384 0 -174 656 336 608 432 0 500000.0 0.005 Resistance -f 400 304 464 304 1 1.5 -s 336 304 336 400 0 1 true -s 336 224 336 304 0 1 true -w 400 304 336 304 0 -x 439 456 512 462 0 24 TL431 -x 256 354 293 360 0 24 ON -x 255 263 302 269 0 24 OFF -w 464 224 400 224 0 -w 400 224 336 224 0 -w 336 224 208 224 0 -172 208 224 144 224 0 6 5.0 35.0 -5.0 0.0 0.5 Voltage -g 208 544 160 544 0 -w 656 544 400 544 0 -w 400 544 336 544 0 -w 336 544 208 544 0 -w 656 544 784 544 0 -w 784 544 864 544 0 -x 158 92 624 98 0 24 Low voltage cutoff (3-36V) using TL431 -x 489 302 611 308 0 24 P-MOSFET -x 296 590 712 594 0 16 You can omit 1k resistor if you don't need OFF switch -x 157 144 348 148 0 16 + Built-in switch buttons -x 675 380 714 384 0 16 500k -x 676 398 746 402 0 16 multiturn -x 454 276 461 279 0 10 S -x 458 335 466 338 0 10 D -w 464 320 656 320 0 -w 656 320 656 336 0 -w 656 320 784 320 0 -w 784 320 864 320 0 -w 400 304 400 384 0 -r 400 480 400 544 0 200.0 -r 400 304 400 224 0 200000.0 -w 464 288 464 224 0 -162 784 432 784 544 1 2.1024259 1.0 0.0 0.0 -w 656 432 656 544 0 -w 336 480 336 400 0 -w 400 480 336 480 0 -d 384 416 384 384 1 0.805904783 -w 384 384 400 384 0 -w 384 416 400 416 0 -r 784 432 784 320 0 100.0 -x 157 127 347 131 0 16 + Zero off state current -x 157 161 783 165 0 16 + Short circuit protection (short circuit causes voltage drop that triggers cutoff) -x 157 179 823 183 0 16 + Reverse voltage protection unless you use MOSFET with diode or press OFF button -o 18 64 0 289 2.5 0.05 0 -1 -o 9 64 0 35 10.0 0.05 1 -1 -o 7 64 0 35 5.0 9.765625E-5 2 -1 +a 560 448 480 448 1 15.0 -15.0 1000000.0 +r 480 448 432 448 0 10000.0 +t 432 448 400 448 0 1 0.6010752043499691 0.6017145432879778 100.0 +v 560 528 560 464 0 0 40.0 2.5 0.0 0.0 0.5 +w 400 464 400 528 0 +w 400 528 480 528 0 +w 480 528 560 528 0 +w 560 432 608 432 0 +f 400 352 464 352 1 1.5 +s 336 352 336 448 0 1 true +s 336 272 336 352 0 1 true +w 400 352 336 352 0 +x 439 504 512 510 0 24 TL431 +x 256 402 293 408 0 24 ON +x 255 311 302 317 0 24 OFF +w 464 272 400 272 0 +w 400 272 336 272 0 +w 336 272 208 272 0 +172 208 272 144 272 0 6 9.0 35.0 -5.0 0.0 0.5 input voltage +g 208 592 160 592 0 +w 656 592 400 592 0 +w 400 592 336 592 0 +w 336 592 208 592 0 +w 656 592 784 592 0 +w 784 592 864 592 0 +x 156 113 622 119 0 24 Low voltage cutoff (3-36V) using TL431 +x 489 350 611 356 0 24 P-MOSFET +x 181 635 734 639 0 16 You can/should omit resistor under TL431 if you don't need OFF switch +x 158 177 557 181 0 16 + Built-in switch buttons and optional indicator LED +x 673 446 696 449 0 10 500k +x 674 460 718 463 0 10 multiturn +x 454 324 461 327 0 10 S +x 458 383 466 386 0 10 D +w 464 368 656 368 0 +w 784 368 864 368 0 +w 400 352 400 432 0 +r 400 528 400 592 0 200.0 +r 400 352 400 272 0 200000.0 +w 464 336 464 272 0 +w 336 528 336 448 0 +w 400 528 336 528 0 +d 384 464 384 432 1 0.805904783 +w 384 432 400 432 0 +w 384 464 400 464 0 +r 784 480 784 368 0 1700.0 +x 157 141 660 145 0 16 + Zero off state current (unless auto-reconnect feature is used) +x 159 195 785 199 0 16 + Short circuit protection (short circuit causes voltage drop that triggers cutoff) +x 159 213 843 217 0 16 + Reverse voltage protection (unless you use MOSFET with diode or press OFF button!) +w 704 368 784 368 0 +w 656 368 672 368 0 +w 672 368 704 368 0 +174 688 272 624 272 0 500000.0 0.49010000000000004 reconnect hysteresis +w 656 288 656 320 0 +w 608 448 608 432 0 +w 656 480 656 592 0 +174 656 480 608 416 0 500000.0 0.39110000000000006 cutoff voltage +x 644 255 667 258 0 10 500k +x 704 282 868 286 0 16 reconnect hysteresis +x 665 478 773 482 0 16 cutoff voltage +162 784 480 784 592 1 2.1024259 1.0 0.0 0.0 +w 656 416 656 368 0 +w 688 272 688 352 0 +w 656 320 656 352 0 +w 624 272 480 272 0 +x 745 304 818 308 0 16 (optional) +x 181 657 853 661 0 16 If you want automatic reconnect with hysteresis, just add another pot across MOSFET +x 180 677 701 681 0 16 and connect cutoff pot to it's wiper instead of + rail. (as illustrated) +x 181 697 699 701 0 16 Off current will no longer be zero and OFF switch will be overriden. +x 158 230 670 234 0 16 + Possibility to add automatic reconnect with hysteresis if needed +x 158 159 836 163 0 16 + Only 5 components for basic setup!!! (without OFF button, LED and auto reconnect) +o 17 64 0 289 5.0 0.025 0 -1 +o 8 64 0 35 0.3125 0.025 1 -1 +o 7 64 0 35 40.0 9.765625E-5 2 -1 diff --git a/electronics/batteries/low-voltage-shutdown3.png b/electronics/batteries/low-voltage-shutdown3.png index 6580239..8d80cff 100644 Binary files a/electronics/batteries/low-voltage-shutdown3.png and b/electronics/batteries/low-voltage-shutdown3.png differ