摘要:
This invention provides an electromagnetic relay formed on a substrate (1), preferably a multi-layer printed circuit board. The magnetic circuit (4, 5, 6a, 6b, 7a, 7b) passes through holes (2, 3) in the substrate, and is formed using printed circuit manufacturing techniques, such as electroplating to manufacture the plated through holes. The armature 7b is formed by depositing the armature material on a temporary layer, which is then removed.
摘要:
A known method of addressing relays in an array is to provide two windings on each relay, wherein one winding is associated with a row drive signal and one winding is associated with a column drive signal, and half of the required activation current is provided by each winding. A known limitation of such addressing arrangements is limited discrimination between selected relays and non-selected relays. The present invention relates to an enhanced addressing system for such arrays of relays.
摘要:
This invention provides an electromagnetic relay formed on a substrate (1), preferably a multi-layer printed circuit board. The magnetic circuit (4, 5, 6a, 6b, 7a, 7b) passes through holes (2, 3) in the substrate, and is formed using printed circuit manufacturing techniques, such as electroplating to manufacture the plated through holes. The armature 7b is formed by depositing the armature material on a temporary layer, which is then removed.
摘要:
The crosspoint element comprises a reed switch comprising a pair of reed pieces having cooperating contacts and an exciting winding for operating the contacts. Each reed piece comprises a core conductor of a first magnetic material and a sheath made of a second magnetic metal having different coercive force from that of the first magnetic metal. When a release pulse current is passed through the exciting winding, the crosspoint elements permit a large permissible variation in the peak value of the magnetomotive force required for holding the reed piece at a definite state of mangetization. The crosspoint element is especially suitable to use as a selection element of an electromagnetic coordinate selection device.
摘要:
A magnetically controlled switching device in which a plurality of reed relays are arranged in matrix array, each relay being composed of a plurality of reed switches, and which has the following characteristic features. Firstly, a coil form where the reed switches are positioned provides guides which introduce leads of the reed switches toward the edge portion of the coil form. The end of the leads are bent so as to easily introduced the leads along the guides of the coil form. Secondly, for the purpose of connecting the leads to a plurality of vertical and horizontal multiple connecting wires, projected portions are provided in the multiple connecting wires, and the reed relays are disposed so that the lead terminals are not arranged in the direction of the multiple connecting wires and the leads and the projected portions are respectively connected. Thirdly, the coil forms where said reed switches are positioned and a group of terminals for the exciting coils are fixed to a magnetic shunt plate. Said magnetic shunt plate, said coil forms, said group of terminals, terminal flanges which insulate said terminals and supporting members which support the base plate on which the multiple connecting wires are arranged are formed simultaneously as one body with synthetic resin.