Capacitors

Capacitors

Industry: Electrical equipment; Electronic components

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Capacitors

Overvoltage

Electrical equipment; Capacitors

A voltage above the normal operating voltage of a device or circuit. In a dielectric withstand test, capacitors are overvoltage-tested (Hi-potted) at 1.5X or 2X its rated voltage to assure quality ...

Parallel lamp operation

Electrical equipment; Capacitors

Refers to ballasts that employ multiple-output current paths from a single ballast to allow lamps to operate independently of one another, allowing other lamps operated by ballast to remain lit ...

Partial discharge

Electrical equipment; Capacitors

A partial discharge is an electric discharge that only partially bridges the insulation betwen conductors when the voltage stress exceeds a critical value. Partial discharges may, or may not, occur ...

Pcb (polychlorinated biphenyls)

Electrical equipment; Capacitors

Chemical pollutant formerly used in oil-filled capacitors which have been outlawed since the 1970's and are no longer used in the capacitor and transformer industries.

Polarity

Electrical equipment; Capacitors

An electrical condition determining the direction in which current tends to flow. The quality of having two opposite charges.

Film capacitor

Electrical equipment; Capacitors

Made from high quality polymer film (usually polycarbonate, polystyrene, polypropylene, polyester (Mylar), and for high quality capacitors polysulfone), and metal foil or a layer of metal deposited ...

Fixed capacitor

Electrical equipment; Capacitors

Fixed Capacitor is constructed in such manner that it possesses a fixed value of capacitance which cannot be adjusted. A fixed capacitor is classified according to the type of material used as its ...