[Lucid Science] shows us how to make some simple reed switches. Reed switches are simple components that detect a magnetic field and can close or open a circuit once detected. While not really a ...

When the magnet is removed, the flexible reeds spring apart and re-open the circuit. The reed switch was patented in 1941 by Walter B. Ellwood, a Bell Labs engineer. Ellwood was looking to design ...

Reed relays are often used for contactless switching in many applications. The reed relay is normally open, but when a magnet is getting close to it, the relay contacts will close. Here we will use ...

Demonstrates how to use a magnetic door/window sensor which is based on a reed switch. This app is developed for a door sensor which contains a MC-38 N.O. Normally Opened magnetic reed switch. This ...