switch control relay
81Magnetic starter — A magnetic starter is an electromagnetically operated switch which provides a safe method for starting an electric motor with a large load. Magnetic starters also provide overload protection and an automatic cutoff in the event of a power failure …
82Signals intelligence operational platforms by nation — This article is a subset article under the main article Signals intelligence, which addresses the unifying conceptual and technical factors and common technologies in this intelligence discipline. This article deals with current signals… …
83Freeview (UK) — Freeview (DTV Services Ltd) Industry Media Founded 30 October 2002 Headquarters London, England, UK …
84Delay box — is a common slang term used in drag racing to describe an on board timer which is a Transmission Brake Delay Timer. A transbrake forces the race car to remain stationary at the starting line, in gear, regardless of how much engine power is… …
85Near field communication — An NFC enabled mobile phone interacting with a SmartPoster Near field communication, or NFC, allows for simplified transactions, data exchange, and wireless connections between two devices in proximity to each other, usually by no more than a few …
86Sputnik 1 — Infobox Spacecraft Name = Sputnik 1 Спутник 1 Organization = Council of Ministers of the USSR Major Contractors = OKB 1, Soviet Ministry of Radiotechnical Industry Mission Type = Atmospheric studies Satellite Of = Earth Launch = October 4, 1957,… …
87Solenoid — A solenoid is a three dimensional coil. In physics, the term solenoid refers to a loop of wire, often wrapped around a metallic core, which produces a magnetic field when an electric current is passed through it. Solenoids are important because… …
88railroad — /rayl rohd /, n. 1. a permanent road laid with rails, commonly in one or more pairs of continuous lines forming a track or tracks, on which locomotives and cars are run for the transportation of passengers, freight, and mail. 2. an entire system… …
89Magnetic-core memory — A 32 x 32 core memory plane storing 1024 bits of data. Computer memory types Volatile RAM DRAM (e.g., DDR SDRAM) SRA …
90Logic gate — A logic gate is an idealized or physical device implementing a Boolean function, that is, it performs a logical operation on one or more logic inputs and produces a single logic output. Depending on the context, the term may refer to an ideal… …
