TransmitterAn electronic device which, with the aid of an antenna, produces radio waves.
Transverse Electromagnetic CellA chamber that maintains its characteristic impedance throughout its volume. Cable assemblies, connectors, and electronic devices may be placed inside the cell for testing purposes such as for measuring radiated emissions.
TEMA chamber that maintains its characteristic impedance throughout its volume. Cable assemblies, connectors, and electronic devices may be placed inside the cell for testing purposes such as for measuring radiated emissions.
Traveling Wave TubeA specialized vacuum tube that is used in electronics to amplify radio frequency (RF) signals to high power, usually as part of an electronic assembly known as a traveling-wave tube amplifier (TWTA).
TWTA specialized vacuum tube that is used in electronics to amplify radio frequency (RF) signals to high power, usually as part of an electronic assembly known as a traveling-wave tube amplifier (TWTA).
TSB-176Defines recommended methods for measuring and validating radio propagation data for application in Land Mobile Radio.
UL 310This standard applies to quick-connect terminals, both connectors and tabs, having nominal widths of 2.8, 3.2, 4.8, 5.2, and 6.3 mm (0.110, 0.125, 0.187, 0.205, and 0.250 in). They are intended for internal wiring connections in electrical equipment and for the field termination of conductors(...)
UL 696These requirements cover adhesive-attached labels for use as permanent nameplates or markers; bearing information, instructions, or identification in the form of text or pictographs. The adhesive may be pressure-sensitive, heat-activated, or solvent-activated. These labels are intended to be(...)
UL 858These requirements cover household cooking equipment that is floor or cabinet supported, wall-mounted, counter mounted, or combinations thereof, rated 600 V or less, for installation in accordance with the National Electrical Code.
UL 962AUL 962A applies to cord-connected, indoor use, furniture power distribution units (FPDU) that consist of single or multiple outlet wiring devices that provide power for and are intended to be installed in commercial or household (residential) portable or stationary furnishings only.
UL 1363These requirements cover indoor use cord and plug connected, relocatable power taps (RPT) rated 250 V AC or less and 20 Amperes or less. RPT are for use as a movable power supply connection for cord and plug connected electrical utilization equipment in accordance with the National Electric(...)
UL 1449UL 1449 applies to Surge Protective Devices (SPDs) designed for repeated limiting of transient voltage surges as specified in the standard on 50 or 60 Hz power circuits not exceeding 1000 V.
UL 1778This Standard is intended to reduce the risk of fire, electric shock, or injury to persons from installed equipment, both as a single unit or as a system of interconnected units, subject to installing, operating, and maintaining the equipment in the manner prescribed by the manufacturer.
UL 3730UL 3730 requirements cover photovoltaic junction boxes intended for factory and field wiring and may include conduit openings, wiring leads, and/or photovoltaic connectors intended for interconnection of PV modules.
UL 4703This standard covers single-conductor, insulated and integrally or non-integrally jacketed, sunlight resistant, photovoltaic wire rated 90°C, 105°C, 125°C, or 150°C dry and, 90°C wet, 600, 1000, or 2000 V for interconnection wiring of grounded and ungrounded photovoltaic power systems as(...)
UL 60384-14UL 60384-14 applies to “Safety Requirements for Fixed Capacitors for Use in Electronic Equipment – Part 14: Sectional Specification: Fixed Capacitors for Electromagnetic Interference Suppression and Connection to the Supply Mains.”
UL 60730-2-12UL 607320-2-12 applies to electrically operated door locks intended to prevent the opening of doors in equipment for household and similar use.
UL 60730-2-13UL 60730-2-13 applies to automatic electrical humidity sensing controls for use in, on or in association with equipment for household and similar use, including controls for heating, air-conditioning and similar applications. The equipment may use electricity, gas, oil, solid fuel, solar(...)
UL 62109-1UL 62109-1 applies to the power conversion equipment (PCE) for use in Photovoltaic (PV) systems where a uniform technical level with respect to safety is necessary. This standard defines the minimum requirements for the design and manufacture of PCE for protection against electric shock,(...)
Uninterruptible Power SupplyAn electrical apparatus that provides emergency power to a load when the input power source, typically mains power, fails.
