Reed relay having conductive bushing and offset current canceling method therewith
AssigneeAgilent Technologies, Inc.
InventorYukoh Iwasaki
Life of this patent
Estimating the term…
Abstract
The heat-induced current that flows from the bushing on the outside into the electrostatic shield tube is recirculated to the conductive bushing by dividing the bushings into inside and outside insulating bushings in a concentric circle and a conductive bushing sandwiched by these insulating bushings with respect to the heat-induced current that flows as a result of the heat that has been transmitted from the coil bobbin to the electrostatic shield tube, and connecting the electrostatic shield tube and conductive bushing with a separate conductive member.
Claims12
A reed relay having a conductive bushing, said reed relay comprising:
- a reed switch,
- an electrostatic shield tube through which said reed switch passes,
- a support member that supports said reed switch inside said electrostatic shield tube, and
- a coil bobbin having a hollow part in which said electrostatic shield tube is placed and a coiled part;
- wherein said support member comprises a first insulating member contacting said reed switch, a second insulating member contacting said electrostatic shield tube, and a first conductive member sandwiched between said first insulating member and said second insulating member, and has a second conductive member to which said first conductive member and said electrostatic shield tube are connected.
A method for canceling the offset current in a reed relay comprising:
- a reed switch, an electrostatic shield tube through which said reed switch passes,
- a support member that supports said reed switch inside said electrostatic shield tube, and a coil bobbin having a hollow part in which said electrostatic shield tube is placed and a coiled part, wherein said method comprises:
- passing a heat-induced current the contact part between said electrostatic shield tube and said support member by the heat transmitted from said electrostatic shield tube to said support member;
- replenishing the current that has flowed out from said support member with current from the first conductive member of the ring that intersects between the first surface and the second surface of said support member;
- and
- recirculating current from said electrostatic shield tube to said first conductive member through the second conductive member that is connected with said first conductive member and said electrostatic shield tube.
Dependencies are inferred from the claim text.