Square wave
Type of non-sinusoidal waveform / From Wikipedia, the free encyclopedia
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A square wave is a non-sinusoidal periodic waveform in which the amplitude alternates at a steady frequency between fixed minimum and maximum values, with the same duration at minimum and maximum. In an ideal square wave, the transitions between minimum and maximum are instantaneous.
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Square wave | |
---|---|
General information | |
General definition | |
Fields of application | Electronics, synthesizers |
Domain, codomain and image | |
Domain | |
Codomain | |
Basic features | |
Parity | Odd |
Period | 1 |
Antiderivative | Triangle wave |
Fourier series |
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The square wave is a special case of a pulse wave which allows arbitrary durations at minimum and maximum amplitudes. The ratio of the high period to the total period of a pulse wave is called the duty cycle. A true square wave has a 50% duty cycle (equal high and low periods).
Square waves are often encountered in electronics and signal processing, particularly digital electronics and digital signal processing. Its stochastic counterpart is a two-state trajectory.