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θ is the time offset or phase portion of Equation 1. The phase angle defines the offset in time and vice versa. Equation 2 shows the relationship. We happened to choose a particularly common offset of 90°. The phase offset between a sine and cosine wave is 90°. When there are two ...
When two sine waves of identical frequency are compared, their relative phase can be measured — but note that this is only meaningful if the two signals are of the same frequency. Phase shifts are caused by all manner of electronic circuits (for example, equalisation) as well as by short ...
This property is used in analyzing waves and oscillations, where the phase difference can have physical significance. 5 Sine and cosine also have series expansions that allow them to be calculated for any angle, beyond just the acute angles in a right-angled triangle. These expansions reveal ...
The type of alternating current waveform may be sinusoidal, triangular, square, sawtooth, etc. The particularity of the waveform doesn’t matter—so long as it is a repeating waveform. That said in most electrical circuits, the typical waveform of alternating current is a sine wave. A typical...
Signal processing is used in order to analyse measured data. Read the article to learn how signal processing is performed and applied in DAQ applications.
Square wave drive brushless DC motor Square wave drive is the simplest driving method. It switches the ON/OFF state of electronic components based on the rotation angle of the rotor, and then changes the current direction of the stator coil to cause the rotor to rotate. Rotate the rotor once...
If you delay a simple sine wave and superimpose it on the original waveform, when the phase of the two sine waves is close, the sound is reinforced in some places. But when the two are exactly 180 degrees out of phase and exactly equal in amplitude, this results in total cancellation. ...
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