Grossel Well-Known Member Jul 29, 2009 #1 Hi. Is it possible to turn off/on a led based on input from a hall-effect sencor using a single NPN transistor (or very few transistors) and resistors. Did a google search for hall effect sencors, but all chematics includes at least one comparator/opamp.
Hi. Is it possible to turn off/on a led based on input from a hall-effect sencor using a single NPN transistor (or very few transistors) and resistors. Did a google search for hall effect sencors, but all chematics includes at least one comparator/opamp.
blueroomelectronics Well-Known Member Jul 29, 2009 #2 Seems some can drive LEDs directly. 2008 December n o t e 1 9 . c o m
D dpj Member Jul 29, 2009 #3 Try A3212 from allegro or AH180 from Diodes. This are available in both through hole and SMT versions.
Try A3212 from allegro or AH180 from Diodes. This are available in both through hole and SMT versions.
Grossel Well-Known Member Jul 29, 2009 #4 Thanks for reply, but I already have a couple of hall censors laying around. They have four pins, and I want to make some use of them. Last edited: Jul 29, 2009
Thanks for reply, but I already have a couple of hall censors laying around. They have four pins, and I want to make some use of them.