Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Use this link and scroll down to Photo Cell Circuits. Read about the LM 339 in some detail and get a grasp on Hysteresis. You will want hysteresis with an active light or dark detector in most cases, especially during a transition from daylight to darkness. There are literally dozens of circuits to do what you want, using a comparator is just one of many.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
