THE SINUSOIDAL WAVE

 

Practically all of the electric power generated by generators that are used in households and industries are in the form of sinusoidal voltages.

 

GENERAL EQUATION: 

 

 

 

where:

• A, the amplitude, is the peak deviation of the function from zero.

• f, the ordinary frequency, is the number of oscillations (cycles) that occur each second of time.

• ω = 2πf, the angular frequency, is the rate of change of the function argument in units of radians per second

• φ, the phase, specifies (in radians) where in its cycle the oscillation is at t = 0.

  • When φ is non-zero, the entire waveform appears to be shifted in time by the amount φ/ω seconds. A negative value represents a delay, and a positive value represents an advance.