Posted inFeatured
Posted inSystems and controls
Electrical-discharge machining (EDM)
EDM involves the direction of high-frequency electrical spark discharges from a graphite or soft metal tool,…
Posted inSystems and controls
Adaptive control
Improvements in CNC machine tools depend on the refinement of adaptive control, which is the automatic monitoring…
Posted inSystems and controls
Frequency response
Hearing aid Hearing aid, device that increases the loudness of sounds in the ear of the wearer.…
Posted inSystems and controls
Damping
Damping, in physics, restraining of vibratory motion, such as mechanical oscillations, noise, and alternating electric currents, by dissipation of energy. Unless…
Posted inSystems and controls
Servomechanism
Servomechanism, automatic device used to correct the performance of a mechanism by means of an…
Posted inSystems and controls
Superconductivity
Superconductivity, complete disappearance of electrical resistance in various solids when they are cooled below a characteristic temperature.…
Posted inSystems and controls
Electromotive force
Electromotive force, abbreviation E or emf, energy per unit electric charge that is imparted by an energy source, such as an electric generator or…
Posted inSystems and controls
Potentiometer
Voltmeter Voltmeter, instrument that measures voltages of either direct or alternating electric current on a scale usually…
Posted inSystems and controls
Rheostat
Rheostat, adjustable resistor used in applications that require the adjustment of current or the varying of resistance in an electric circuit. The…
Posted inSystems and controls
Alternating current
Alternating current, abbreviation AC, flow of electric charge that periodically reverses. It starts, say, from zero, grows to…