Abstract:
A small-sized switch for high frequency which has a desired high-frequency characteristic and can be produced at high productivity is constituted by respectively arranging insulating walls (14 and 15) made of a dielectric material between a shield plate (24) provided on the backside of contacts (21a and 23a) and the fixed contacts (21a and 23a) counterposed to a movable contact pieces (51b) so that the piece (51b) can be brought into contact with and separated from the contacts (21a and 23a).
Abstract:
A high frequency relay having a mounting surface for mounting on an outside, comprising an electromagnet formed by winding a coil on a steel core, a fixed terminal connected to the outside, a contact driven so as to move close to and away from the fixed terminal, and an armature sucked to and separated from the steel core according to the excitation of the coil to provide a driving force for driving the contact, wherein the contact is formed in a plate shape having a contacting and separating surface coming in contact with and separated from the fixed terminal and supported in the insulated state so that the contacting and separating surface comes generally parallel with the contacting and separating surface, and a pair of metallic shield members for shielding a contacting and separating portion between the contact and the fixed terminal are provided so as to hold the contact from the direction perpendicular to the contacting and separating surface.
Abstract:
A relay (70) includes contacts (73) residing within a glass tube (72). A coil (76) surrounding the tube (72) and a switch (66) are connected in parallel between two terminals (77) of the relay (70). A current source supplies a current to the coil (76) and switch (66). When the switch (66) is open, substantially all of the current passes through the coil (76) and the coil (76) produces a sufficient amount of magnetic flux to close the relay's contacts (73). When the switch (66) closes, it shunts a sufficient amount of the current away from the coil (76) to reduce the magnetic flux it produces below the level needed to keep the contacts (73) closed. The current source is sized so that the coil (76) requires relatively few turns, thereby allowing the relay (70) to be relatively thin. The coil (76) is formed by a conductor (140) embedded in an insulating substrate (128) surrounding the tube (72).
Abstract:
A tap changer for connection to a regulating winding of a rated regulation voltage is provided. The tap changer having a linear tap selector having at least one current collector and a linear arrangement of fixed contacts. Tap changer further comprises a shielding structure arranged to shield the tap selector from an external electrical field. The shielding structure comprises: a first shielding part arranged to be electrically connected to a current collector; and a second shielding part formed at least partly by the fixed contacts. The first and second shielding parts are separated so that the distance between the first and second shielding parts reaches or exceeds the rated regulating voltage insulation distance of the tap changer.
Abstract:
A two pole contactor, particularly for a domestic electricity meter, comprising a solenoid with a plunger actuator (24) and a movable contact (16) for each pole mounted on a pivotal blade (14) in a symmetrical opposed configuration. The plunger is connected to the blades by a leaf spring (38) whose ends engage sliders (40) connected to the blades to impart a similar and even movement to each blade.
Abstract:
A two pole contactor, particularly for a domestic electricity meter, comprising a solenoid with a plunger actuator (24) and a movable contact (16) for each pole mounted on a pivotal blade (14) in a symmetrical opposed configuration. The plunger is connected to the blades by a leaf spring (38) whose ends engage sliders (40) connected to the blades to impart a similar and even movement to each blade.