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EEM 4.4-3 Three-phase motor with slip
EEM 4.4-3 Three-phase motor with slip

... can be drawn between DC, AC and three-phase machines. The machines used for training in electrical engineering are designed so that nearly all of the circuitry and drives found in industry, commerce and at home can be conveyed in a didactic fashion in hands-on training. Using the servo drive and bra ...
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Electrical ballast



An electrical ballast is a device intended to limit the amount of current in an electric circuit. A familiar and widely used example is the inductive ballast used in fluorescent lamps, to limit the current through the tube, which would otherwise rise to destructive levels due to the tube's negative resistance characteristic.Ballasts vary in design complexity. They can be as simple as a series resistor or inductor, capacitors, or a combination thereof or as complex as electronic ballasts used with fluorescent lamps and high-intensity discharge lamps.
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