Abstract:
A relay (10) for switching an electrical signal includes switching elements(14, 18), an actuator (12) for closing the switch (18), and an actuator for opening the switch (12), the latter two of which are mechanically decoupled when the relay (10) is in a mechanical rest position. When a relay close signal is applied, the closing actuator (18) electrostatically drives the switching elements (14, 18) to complete a signal path between two terminals for the switched signal (22,24). In the process of closing the switch, the opening actuator (12) remains stationary, i.e., no mass is displaced. Application of a switch open signal electrostatically drives the opening actuator, optionally in combination with a mechanical restoring force on the closing actuator (18) to open the switch (18) to break the signal conduction path for the switched signal.
Abstract:
The invention concerns an adaptable electromagnetic actuator for an electric switch, comprising a mobile coil (15) and a main magnetic circuit (20) consisting of an external yoke (21) and a core (22) made of magnetic material, and of a magnet (25) with radially oriented polarization inserted between the yoke (21) and the core (22). The yoke (21), the core (22) and the magnet (25) form a base (23) of the magnetic circuit (20) which is capable of receiving one or more additional stackable modules (20, 40) consisting each of an additional magnet (35) with radially oriented polarization inserted between an additional core (32) and an external additional yoke (31).
Abstract:
An apparatus (1000) includes an electrical device (1004) and a latching micromagnetic switch (1002) that controls energy flow through the electrical device (1004). The latching micromagnetic switch (1002) includes a cantilever, a permanent magnet, and a coil configured to latch the latching micromagnetic switch (1002) in one of two positions each time energy passes through the coil. The electrical device (1004) and the latching micromagnetic (1002) switch can be integrated on a same substrate. Otherwise, the electrical device (1004) and the latching micromagnetic switch (1002) can be located on separate substrates and coupled together. The electrical device (1004) can be a circuit, a filter, an antenna, a transceiver, or the like.
Abstract:
A two-pole contactor includes a contact assembly (24) for making and breaking contact between a pair of fixed contacts (8, 10) at each pole. The contact assembly is a plastics moulding carrying a resiliently supported shorting bar and is coupled to a plunger of a solenoid. In order to make a contact, the plunger accelerates the contact assembly towards the fixed contacts, until the contact bar touches the fixed contacts. The plunger and the remainder of the contact assembly then continues to move through a predetermined distance, loading the resiliently supported shorting bar against the fixed contacts. To break contact, the procedure is reversed. The solenoid has two plungers slidable within a common bore and separated by a compression spring. Permanent magnets situated at each end of the solenoid core induce an attractive force between the plungers. When the separation between the plungers is smaller than a threshold separation, the magnetic attraction overcomes the spring force and the plungers latch together. When the separation between the plungers is greater than the threshold separation, the force exerted by the spring is greater than the magnetic attraction and so the plungers de-latch in a separated position, in which the contacts at both poles of the contactor are open.
Abstract:
Disclosed are minute electromechanical devices (10, 11, 12), as electromagnetic actuators, pressure transducers, pumps and valves, which are conveniently fabricated from ceramic tape to yield monolithic ceramic and hybrid structures.
Abstract:
An electro-magnetically operated device is described in which a magnetisable armature, typically a length of thin naturally resilient mild steel, is sandwiched between, and extends from, two parts of a magentic circuit which contains an air gap into which the armature extends. An electromagnet polarizes the armature along its length so as to cause the end thereof in the air gap to be attached to one or the other of the two poles of the magnetic circuit defining the gap. The armature is designed so as to be capable of adopting a mid-position between the poles of the air gap if the curent flowing in the electromagnet is reduced to zero. Equalising the air gaps and adjusting the size of the gap relative to the resilience of the armature will produce a bistable characteristic in which the armature will not remain in the mid-position, but will always remain in contact with one pole or the other, and is shifted from one to the other by a pulse of current of appropriate polarity. Adjustment of the size of the air gap on one side or the other of the armature introduces an out of balance in the magnetic circuit enabling the device to adopt a monostable characteristic instead of a bistable characteristic.
Abstract:
The invention relates to an electromagnetic relay comprising a magnetic system consisting of an exciter coil (1), a core (2) and an armature (3) in addition to a socket formed by a through hole plated printed board (4). The side facing the magnetic system of the printed board (4) has strip conductors while the side of the printed board (4) facing the magnetic system forms a basic side of the relay. The printed board (4) also has fixed contact elements (12) which are connected to connecting elements (10, 22).
Abstract:
The relay has a base (40) with fixed contacts (42-45), connection elements (46, 46) for moveable contact springs (24), a pivotally mounted rocker armature (24) that is connected to the contact springs (30, 31), a magnet arrangement comprising a coil (14), core (15) and pole shoes (17, 18) in addition to a triple-pole magnetized permanent magnet that forms working air gaps with said armature (24). In order to produce a monostable switching characteristic, the armature has two wings (25, 26) of different widths that interact with pole shoes (17, 18) of different widths. A constructionally dissymmetric magnetic system is thus produced, whereby the area obtained as a result of the dissymmetry of the armature inside the cuboid housing can be used to accommodate coil connecting elements (16) or the terminal connections of the contact springs (36,37) which would otherwise result in a much wider relay.
Abstract:
The invention relates to an electromagnetic relay comprising a magnetic system consisting of an exciter coil (1), a core (2) and an armature (3) in addition to a socket formed by a through hole plated printed board (4). The side facing the magnetic system of the printed board (4) has strip conductors while the side of the printed board (4) facing the magnetic system forms a basic side of the relay. The printed board (4) also has fixed contact elements (12) which are connected to connecting elements (10, 22).
Abstract:
The invention relates to an electromagnetic relay, comprising a coil (1), a core (2), an armature (4), mobile contacts (5) which are located on the armature, a frame element (10) and fixed contacts (12) which are located on the frame element (10). The fixed contacts (12) are arranged on contact springs (9) which are fixed on the frame element (10) at their fixed ends and each have a free end. The invention also relates to a method for producing the inventive relay.