hysteresis

diff --git a/electronics/batteries/low-voltage-shutdown3.circuit b/electronics/batteries/low-voltage-shutdown3.circuit
index d2e139fbbe4d52edddda7c70b563d0c78e176736..cfbef83e005df5071b857737c7005c85a9c42f68 100644 (file)
--- 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 6580239b66f40cd95d3c8e6d2f0fb6e011a2e94c..8d80cff4e128696afcfe44ce6d582b151e4895ee 100644 (file)
Binary files a/electronics/batteries/low-voltage-shutdown3.png and b/electronics/batteries/low-voltage-shutdown3.png differ