enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Square wave - Wikipedia

    en.wikipedia.org/wiki/Square_wave

    The ideal square wave contains only components of odd-integer harmonic frequencies (of the form 2π(2k − 1)f). A curiosity of the convergence of the Fourier series representation of the square wave is the Gibbs phenomenon. Ringing artifacts in non-ideal square waves can be shown to be related to this phenomenon.

  3. Frequency multiplier - Wikipedia

    en.wikipedia.org/wiki/Frequency_multiplier

    Easy choices are to use an even function to generate even harmonics or an odd function for odd harmonics. See Even and odd functions#Harmonics. A full wave rectifier, for example, is good for making a doubler. To produce a times-3 multiplier, the original signal may be input to an amplifier that is over driven to produce nearly a square wave ...

  4. Power amplifier classes - Wikipedia

    en.wikipedia.org/wiki/Power_amplifier_classes

    Experiment shows that a square wave can be generated by those amplifiers. Theoretically square waves consist of odd harmonics only. In a class-D amplifier, the output filter blocks all harmonics; i.e., the harmonics see an open load. So even small currents in the harmonics suffice to generate a voltage square wave.

  5. Fourier series - Wikipedia

    en.wikipedia.org/wiki/Fourier_series

    A square wave (represented as the blue dot) is approximated by its sixth partial sum (represented as the purple dot), formed by summing the first six terms (represented as arrows) of the square wave's Fourier series. Each arrow starts at the vertical sum of all the arrows to its left (i.e. the previous partial sum).

  6. Total harmonic distortion - Wikipedia

    en.wikipedia.org/wiki/Total_harmonic_distortion

    A pure square wave with infinite harmonics has THD F of 48.3% [1] [14] [15] ... even-order harmonics are said to be generally harder to hear than odd-order. [27]

  7. Harmonics (electrical power) - Wikipedia

    en.wikipedia.org/wiki/Harmonics_(electrical_power)

    In distorted periodic signals (or waveforms) that possess half-wave symmetry, which means the waveform during the negative half cycle is equal to the negative of the waveform during the positive half cycle, all of the even harmonics are zero (= = =) and the DC component is also zero (=), so they only have odd harmonics (); these odd harmonics ...

  8. Triangle wave - Wikipedia

    en.wikipedia.org/wiki/Triangle_wave

    A triangular wave or triangle wave is a non-sinusoidal waveform named for its triangular shape. It is a periodic , piecewise linear , continuous real function . Like a square wave , the triangle wave contains only odd harmonics .

  9. Waveform - Wikipedia

    en.wikipedia.org/wiki/Waveform

    Square wave: (,,,) = {, <,. This waveform is commonly used to represent digital information. A square wave of constant period contains odd harmonics that decrease at −6 dB/octave.