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Also AM radio or AM. Used interchangeably with kilohertz (kHz) and medium wave. A modulation technique used in electronic communication where the amplitude (signal strength) of the wave is varied in proportion to that of the message signal. Developed in the early 1900s, this technique is most commonly used for transmitting an audio signal via a radio wave measured in kilohertz (kHz). See AM ...
A. A la carte pay television; Active antenna; Actor; Television addiction; Addressability; Television advertisement; Affiliated station; After school special
A power supply is an electrical device that supplies electric power to an electrical load. The main purpose of a power supply is to convert electric current from a source to the correct voltage, current, and frequency to power the load. As a result, power supplies are sometimes referred to as electric power converters. Some power supplies are ...
PSU—Power Supply Unit; PSVI—Post-Schema-Validation Infoset; PTS-DOS—PhysTechSoft – Disk Operating System; PV—Physical Volume; PVG—Physical Volume Group; PVR—Personal Video Recorder; PXE—Preboot Execution Environment; PXI—PCI eXtensions for Instrumentation; PRC—Procedure Remote Call
A flyback converter is a power supply circuit operating on similar principles. A typical modern design incorporates the flyback transformer and rectifier circuitry into a single unit with a captive output lead, known as a diode split line output transformer or an Integrated High Voltage Transformer (IHVT), [ 14 ] so that all high-voltage parts ...
The terms power grid and electric grid describe the “big view” of the electric system, White said — it’s the complex overall system through which electricity moves and connects electricity ...
Power supply unit, an electronic device . Power supply unit (computer) Passenger service unit, above each seat in a passenger airplane; Police support unit (United Kingdom) ...
The elements of a simple broadcast television system are: . An image source. This is the electrical signal that represents a visual image, and may be derived from a professional video camera in the case of live television, a video tape recorder for playback of recorded images, or telecine with a flying spot scanner for the transfer of motion pictures to video).