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PowerPoint-presentation
PowerPoint-presentation

... •The origin to the HF- harmonics is finding in power electronics in domestic, commercial and industrial equipment. •The number of emitting devices is growing significantly. •Literature describes interference on electronic office equipment, in TV and audio studios and in power grid using power line c ...
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Physics Lab 206 Feb 2016 Quiz #2 DC Circuits Name:

... 1) Alessandro Volta turns on a light bulb using a battery. a) Draw a schematic figure of the circuit. [1 pt] b) Is the current passing through the light bulb and the battery is the same? [1 pt] c) Add ammeter and voltmeter to the circuit in part a, i.e. draw them, to measure the current passing thro ...
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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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