amplidyne system

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• Amplidyne — An amplidyne is an electrodynamic amplifier invented during World War II by Ernst Alexanderson.It is an early form of servomechanism used to implement position feedback control for large motors. A small electrical signal can control the position… …   Wikipedia

• Ship gun fire-control system — Mk 37 Director c1944 with Mk 12 (rectangular antenna) and Mk 22 orange peel Ship gun fire control systems (GFCS) enable remote and automatic targeting of guns against ships, aircraft, and shore targets, with or without the aid of radar or optical …   Wikipedia

• M103 heavy tank — Infobox Weapon name=M103 Heavy tank caption=An M103A2 at Bovington tank museum in the UK origin=flagcountry|United States type=Heavy tank is vehicle=yes service= 1957 1974 used by= wars= designer= design date= manufacturer= Chrysler unit cost=… …   Wikipedia

• Synchro — [ frame|Schematic of Synchro TransducerThe complete circle represents the rotor. The solid bars represent the cores of the windings next to them. Power to the rotor is connected by slip rings and brushes, represented by the circles at the ends of …   Wikipedia

• Ernst Alexanderson — Infobox Scientist name = Ernst Frederick Werner Alexanderso caption = birth date = birth date|1878|1|25 birth place = Uppsala, Sweden death date = death date and age|1975|5|14|1878|1|25 death place = residence = United States nationality =… …   Wikipedia

• Electric motor — For other kinds of motors, see motor (disambiguation). For a railroad electric engine, see electric locomotive. Various electric motors. A 9 volt PP3 transistor battery is in the center foreground for size comparison. An electric motor converts… …   Wikipedia

• Ward Leonard control — Ward Leonard Control, also known as the Ward Leonard Drive System, was a widely used DC motor speed control system introduced by Harry Ward Leonard in 1891. In early 1900s, the control system of Ward Leonard was adopted by the U.S Navy and also… …   Wikipedia

• Servomechanism — [ thumb|right|200px|Industrial servomotor The grey/green cylinder is the brush type DC motor. The black section at the bottom contains the planetary reduction gear, and the black object atop the motor is the optical encoder for position feedback …   Wikipedia

• Motor controller — A motor controller is a device or group of devices that serves to govern in some predetermined manner the performance of an electric motor.[1] A motor controller might include a manual or automatic means for starting and stopping the motor,… …   Wikipedia

• Brushless DC electric motor — A microprocessor controlled BLDC motor powering a micro remote controlled airplane. This external rotor motor weighs 5 grams, consumes approximately 11 watts (15 millihorsepower) and produces thrust of more than twice the weight of the plane …   Wikipedia

• DC injection braking — DC injection brake module [1] DC injection braking is a method of slowing AC electric motors. A DC voltage is injected into the winding of the AC motor after the AC voltage is disconnected, providing braking force to the rotor [2] …   Wikipedia