p H α ∫ ∈ - ∫ h ! f +∋ R ∫

Phase shifting is used to correct an undesirable phase shift that is already in the circuit or to produce special effects. RC, RL and any reactive circuit are very much suitable with this purpose or function in the sense that the capacitor makes the current lead the applied voltage.

For further understanding of phase- shifters, see sample problem below in a given two RC circuit. Compare and contrast their output voltage and their phase angle.

Use Voltage Division:

              

                             

We can say there were a lot of practical applications of phase shifting. Sound may be interpreted through phase shift. Shifting a specific radio station to other is an example of phase shifting. When we have two points of sound, there will be a time delay between those points that would cause phase shifting between the two waves.

I've learned that the phase of sinusoidal wave may also be shifted depending on the value of resistor (R), capacitor (C), and the operating frequency (f). I found out that when the output voltage (V_O), is taken across the resistor, phase angle is positive which made V_O leads the input voltage (V_i ) but, if V_O  is taken across the capacitor, V_O  lags V_in  a certain angle. Also, the total phase shift is equal to the sum of individual phase shifts.