Magnetization and pull characteristics of mating magnetic reeds

A sealed reed relay embodies one or more sealed contacts, assembled with a coil and with shielding and supporting members. The distinctive feature is the construction of the sealed contact.1,2 In its simplest form, shown in Fig. 1, a pair of magnetic reeds, the contacting members, are sealed in a glass envelope, and are actuated by the magnetic field induced in them by the coil current.