I have a hall sensor that outputs 0.2-2.5v in a linear fashion. I would like to turn on a 12v circuit when the sensor outputs more than 0.5v or so then turn off when the voltage falls below 0.5v.
Preliminary research suggests that i could use a transistor that would turn on with about 0.7v base voltage but i have no idea how to wire it or what type of transistor to use. i would also consider using a transistor to drive a relay that actually does the switching since the 12v load is about 5w.
September 09, 2017
Better to use a comparator, you have better control of the trigger voltage. More information at http://www.electronics-tutorials.ws/opamp/op-amp-comparator.html
September 18, 2017
No answers yet. Contribute your answer below!
Anyone can ask a question.
Did you already search (see above) to see if a similar question has already been answered? If you can't find the answer, you may ask a question.
CircuitLab's Q&A site is a FREE questions and answers forum for electronics and electrical engineering students, hobbyists, and professionals.
We encourage you to use our built-in schematic & simulation software to add more detail to your questions and answers.
Please respect that there are both seasoned experts and total newbies here: please be nice, be constructive, and be specific!
CircuitLab is an in-browser schematic capture and circuit simulation software tool to help you rapidly design and analyze analog and digital electronics systems.
|New @ CircuitLab|