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  2. Pulsed DC - Wikipedia

    en.wikipedia.org/wiki/Pulsed_DC

    The voltage of a DC wave is roughly constant, whereas the voltage of an AC waveform continually varies between positive and negative values. Like an AC wave, the voltage of a PDC wave continually varies, but like a DC wave, the sign of the voltage is constant. Pulsating direct current is used on PWM controllers.

  3. Ripple (electrical) - Wikipedia

    en.wikipedia.org/wiki/Ripple_(electrical)

    A non-ideal DC voltage waveform can be viewed as a composite of a constant DC component (offset) with an alternating (AC) voltage—the ripple voltage—overlaid. The ripple component is often small in magnitude relative to the DC component, but in absolute terms, ripple (as in the case of HVDC transmission systems) may be thousands of volts.

  4. Alternating current - Wikipedia

    en.wikipedia.org/wiki/Alternating_current

    The abbreviations AC and DC are often used to mean simply alternating and direct, respectively, as when they modify current or voltage. [ 1 ] [ 2 ] The usual waveform of alternating current in most electric power circuits is a sine wave , whose positive half-period corresponds with positive direction of the current and vice versa (the full ...

  5. Direct current - Wikipedia

    en.wikipedia.org/wiki/Direct_current

    The DC solution of an electric circuit is the solution where all voltages and currents are constant. Any stationary voltage or current waveform can be decomposed into a sum of a DC component and a zero-mean time-varying component; the DC component is defined to be the expected value, or the average value of the voltage or current over all time.

  6. Skin effect - Wikipedia

    en.wikipedia.org/wiki/Skin_effect

    The internal component of a round wire's inductance vs. the ratio of skin depth to radius. That component of the self inductance is reduced below μ/8 π as skin depth becomes small (as frequency increases). The ratio AC resistance to DC resistance of a round wire versus the ratio of the wire's radius to the skin depth.

  7. Magnetic reluctance - Wikipedia

    en.wikipedia.org/wiki/Magnetic_reluctance

    In both AC and DC fields, the reluctance is the ratio of the magnetomotive force (MMF) in a magnetic circuit to the magnetic flux in this circuit. In a pulsating DC or AC field, the reluctance also pulsates (see phasors). The definition can be expressed as follows: = where

  8. 10 of the Most Expensive Fines in Football - AOL

    www.aol.com/finance/10-most-expensive-fines...

    Fine: $500,000 Bill Belichick, the longtime head coach of the New England Patriots, was fined $500,000 in 2007 for his role in the “Spygate” scandal, one of the most infamous controversies in ...

  9. Glossary of power electronics - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_power_electronics

    An AC converter with a DC link. indirect AC/DC converter An electronic AC/DC converter with a DC or AC link. indirect commutation A series of commutations from one principal arm to another or back to the original one by successive commutations via one or more auxiliary arms. indirect (power) conversion Electronic conversion with one or more DC ...