from The Century Dictionary and Cyclopedia

  • n. The ratio of the real to the apparent power in an alternating-current circuit. In a circuit where the wave-forms of current and electromotive force are sine-forms, the power factor is numerically equal to the cosine of the phase-difference.


Sorry, no etymologies found.


  • Measurements of the power factor p The ratio of active power to total power (y) is indicated by the cos -- meter (or power-factor meter).

    7. Measuring technology of checking electrotechnical installations and equipment and of permanently controlling the main parameters in operation (I, U, P, Wh, Q, )

  • Circuit of a fluorescent lamp with capacitor for power-factor compensation

    4. Electrical Energy

  • Frequently, a capacitor for power-factor compensation is added according to Fig. 4.15. whose function and mode of operation will be discussed in Chapter 7.

    4. Electrical Energy

  • Furthermore, it is distinguished between single power-factor compensation, group power-factor compensation in alternating current installations and three-phase current installations and central power-factor compensation.

    6. Operating Components for Discharge Lamps

  • This minimization can be achieved through power-factor correction, utilizing stand-by options, communication and monitoring with the smart grid, taking advantage of off-peak charging and operation, on-demand and variable processing speed semiconductors, or switching to a lower power mode.

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  • Touch panel technology gives major advantages over traditional push-buttons for selecting from the four main variable areas: energy metering; current-voltage-frequency metering; power and power-factor metering; and harmonic analysis.


  • Remote on/off control is a standard feature and the unit is power-factor corrected to

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  • The Mean Well HRP-100 series has been designed for any application that requires no-load power consumption and a power supply with power-factor correction.

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  • Reference designs included the pure-sine-wave UPS (uninterruptible-power supply), digital interleaved power-factor correction, and ac/dc reference designs.

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  • Microchip, for example, offers MAPS (Microchip advanced parts selector), and Power Integrations offers the downloadable PIExpert tool to help you design switching power supplies, including high-power resonant supplies that also have PFC (power-factor correction).



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