Reedkontakten

Reedkontakten, also known as reed switches, are electrical switches that operate by means of a pair of conductive reeds sealed in a glass tube. When an external magnetic field is applied, the reeds close, completing an electrical circuit. Reed switches are commonly used in various applications due to their simplicity, reliability, and ability to operate in harsh environments.

The basic principle of operation involves two flexible metal reeds sealed in a glass tube. In the absence of a magnetic field, the reeds are held apart by a spring or a flexible hinge. When a magnetic field is applied, the reeds are attracted to each other and close the circuit, allowing current to flow. The magnetic field can be generated by a permanent magnet, an electromagnet, or a coil carrying an electric current.

Reed switches are widely used in a variety of applications, including:

- Automotive industry: for ignition systems, fuel level sensors, and anti-lock braking systems.

- Industrial automation: for position sensing, limit switches, and safety interlocks.

- Consumer electronics: for power switches, relay contacts, and sensor activation.

- Medical devices: for patient monitoring, diagnostic equipment, and implantable devices.

Reed switches offer several advantages, such as low power consumption, fast response times, and the ability to operate in extreme temperatures and harsh environments. However, they also have limitations, including a limited number of operating cycles and susceptibility to damage from mechanical shock or vibration.

In summary, reedkontakten, or reed switches, are versatile and reliable electrical switches that operate based on the principle of magnetic attraction. Their applications span across various industries, making them an essential component in modern electronic systems.