transistor relay
121Microwave — This article is about the electromagnetic wave. For the cooking appliance, see Microwave oven. For other uses, see Microwaves (disambiguation). A microwave telecommunications tower on Wrights Hill in Wellington, New Zealand Microwaves, a subset… …
122Rose-Hulman Institute of Technology — Infobox University name = Rose Hulman Institute of Technology motto = Labor et scientia (Labor and Knowledge) established = 1874 (details) type = private coeducational endowment = $202.9 million president = Gerald Jakubowski faculty = 158… …
123Solenoid — 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… …
124Electricity meter — Typical North American domestic analog electricity meter …
125Sonobuoy — A sonobuoy (a portmanteau of sonar and buoy) is a relatively small (typically 4⅞ inches, or 124 mm, in diameter and 36 inches, or 910 mm, long) expendable sonar system that is dropped/ejected from aircraft or ships conducting anti submarine… …
126Scoreboard — A scoreboard is a large board for publicly displaying the score in a game or match. Most levels of sport from high school and above use at least one scoreboard for keeping score, measuring time, and displaying statistics. Scoreboards in the past… …
127Pull-up resistor — Pull up resistors are used in electronic logic circuits to ensure that inputs to logic systems settle at expected logic levels if external devices are disconnected. Pull up resistors may also be used at the interface between two different types… …
128Signal Corps (United States Army) — U.S. Army Signal Corps Coat of Arms Active 3 March 1863 – Present Country …
