This section provides an overview for current induction terminals as well as their applications and principles. Also, please take a look at the list of 6 current induction terminal manufacturers and their company rankings.
Table of Contents
A current induction terminal is a terminal component used to supply large amounts of power to the inside of vacuum and pressure equipment.
Also called feedthroughs, they can supply power for heating purposes or simply power, without admitting outside air. Because they are electrically insulated with ceramics or other materials, power can be supplied only to the electrodes that need it. Terminals are chemically and thermally resistant and can be used stably. Many types are available according to the number of electrodes, flange shape, etc. Some manufacturers offer custom-ordered products as needed. Since both high airtightness and electrical insulation are required, a special sealing structure called hermetically sealed structure is applied.
Used in the fields of manufacturing, processing, and academic research that handle vacuum and pressure vessels. They are used in a variety of applications that require the application of current or voltage inside special vessels, such as detection and control of objects, extraction of measurement signals, and engineering applications.
A core wire to which current/voltage is applied is permeated through a metallic component such as a flange, and power is supplied from the outside into the vacuum through the core wire. In order to supply power only to the necessary electrodes, insulating materials such as ceramics are used to insulate the terminal from the ground.
A special sealing structure (hermetically sealed) using glass, ceramic, silver solder, etc., is applied to prevent leakage of gas inside the vessel. This structure takes advantage of the difference in thermal expansion coefficient between insulators and metals. In the case of glass, the coefficient of thermal expansion is relatively small, and sealing is done by applying compressive stress from the metal to the glass. By applying appropriate compressive stress, high airtightness is achieved.
*Including some distributors, etc.
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