Reed Switch Sensor Working

Choose from our selection of reed switches including magnetically actuated switches magnetic contact alarm switches and more.

Reed switch sensor working.

How reed switches work. In its simplest and most common form it consists of a pair of ferromagnetic flexible metal contacts in a hermetically sealed glass envelope. There are many advantages for using magnetically operated reed sensors including. The simplest magnetic field sensor is a reed switch.

When an axially aligned magnet approaches the switch its magnetic force closes the reeds. Alternatively you ll need supporting circuitry to enable hall sensors to do their job. The easiest way of making one is to take a. In stock and ready to ship.

The two contacts are normally snapped together and when you bring a magnet up to the switch spring apart. The contacts are usually normally open closing when a magnetic field is present or they may be. Operated through a non magnetic material sensors can be developed with such sensitivity that they can be embedded deep within an assembly out of sight. To be more precise a reed switch working is initiated when a magnetic force is brought near it which results in the required mechanical switching action.

Fundamentally a reed switch is a magneto mechanical relay. The reed switch is an electrical switch operated by an applied magnetic field it was invented at bell telephone laboratories in 1936 by walter b. Advantages of using reed switched. Reed switches feature incredibly high reliability for a mechanical switch and they re able to.

A reed sensor is a device built using a reed switch that incorporates additional functionality for example the ability to withstand higher shock or vibration molded packages with in built magnets for form b or e type operation easier mounting for automatic pick and place before smd reflow additional intelligent circuitry etc. Reed switches like this are called normally closed nc normally switched on so electricity flows through them most of the time. It contains two ferromagnetic nickel and iron reed elements in an evacuated hermetically sealed glass tube to minimize contact arcing.