Abstract

A method and apparatus for non-intrusively measuring flowing currents and/or voltage on the inner conductor of a coaxial cable is introduced herein. In particular, a resultant low-impedance element is coupled concentrically to the shield at a desired insertion point of the coaxial cable. A pair of conductive leads provided by the resultant low-impedance element is thereafter monitored for derived flowing currents that are in direct proportion to but of opposite polarity to the current within the inner conductor of the coaxial cable.

IPC Classes  ?

• G01R 31/08 - Locating faults in cables, transmission lines, or networks
• G01R 27/08 - Measuring resistance by measuring both voltage and current
• G01R 1/04 - HousingsSupporting membersArrangements of terminals
• G01R 1/067 - Measuring probes
• G01R 19/00 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof

Goods & Services

Electronic apparatus for testing and evaluating the performance of semiconductor-based products and cable products

Goods & Services

Electronic apparatus for testing and evaluating the performance of semiconductor-based products

Goods & Services

Electronic apparatus for testing and evaluating the performance of semiconductor-based products

Abstract

Encapsulated switches are disclosed which substitute non-toxic gallium alloy for mercury. In one embodiment, wetting of the interior surfaces of the housing is prevented by coating the surfaces with an electrically insulative inorganic non-metallic material, such as alumina or boron nitrate. According to another embodiment, a perfluorocarbon liquid is employed as the anti-wetting agent.

IPC Classes  ?

• B05D 5/00 - Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
• B05D 3/00 - Pretreatment of surfaces to which liquids or other fluent materials are to be appliedAfter-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
• B05D 7/22 - Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
• B05D 3/10 - Pretreatment of surfaces to which liquids or other fluent materials are to be appliedAfter-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means

Abstract

Encapsulated switches are disclosed which substitute non-toxic gallium alloy for mercury. In one embodiment, wetting of the interior surfaces of the housing is prevented by coating the surfaces with an electrically insulative inorganic non-metallic material, such as alumina or boron nitrate. According to another embodiment, a perfluorocarbon liquid is employed as the anti-wetting agent.

IPC Classes  ?

• H01H 9/00 - Details of switching devices, not covered by groups
• H01H 51/22 - Polarised relays
• H01H 29/00 - Switches having at least one liquid contact

Abstract

SH at said selected point in said cable, respectively, when a pulse is generated, and for calculating the corrected values of current and voltage according to a formula that uses these resistance values.

IPC Classes  ?

• G01R 27/26 - Measuring inductance or capacitanceMeasuring quality factor, e.g. by using the resonance methodMeasuring loss factorMeasuring dielectric constants