what is a Reed Switch?
A reed switch, also known as a magnetic reed switch, is an electronic switch that is activated by a magnetic field. It consists of two ferromagnetic blades (reeds) that are hermetically sealed inside a glass tube. When a magnetic field is applied to the switch, the reeds are drawn together and complete an electrical circuit.
Reed switches are commonly used in a wide range of applications, including security systems, medical devices, and automotive electronics. They are often used in conjunction with magnets to trigger an action or alert.
One of the key benefits of reed switches is their durability. They have no mechanical contacts that can wear out over time, making them a reliable choice for long-term use. They are also small and can be integrated into a wide range of products and systems.
Reed switches come in various shapes and sizes, including surface mount and through-hole varieties. They can be normally open (NO) or normally closed (NC), meaning that the circuit is open or closed when the switch is in its natural state. Some reed switches are also sensitive to the direction of the magnetic field, allowing for greater flexibility in design.
In summary, reed switches are a reliable and durable type of electronic switch that can be used in many applications. Their small size, versatility, and sensitivity to magnetic fields make them a popular choice for designers and engineers. Whether you are designing a security system or a medical device, a reed switch can help you achieve your goals.