Phasor Representation

Wednesday, 20 February 2019

5:13 PM

A phasor is a line drawn from an origin that has both magnitude and angle

Phasors indicate time varying quantities of current and voltage

 

Peak value, and angle

 

 

 

 

 

 

Polar to Rectangular Form

 =

 

 

 

 

 

 

---

 

Phase difference

The phase difference between  and

is

 

 

 

 

For resistors in a circuit, the current and voltage through the resistor are in phase

For inductors in a circuit, the current and voltage through the inductor are 90deg out of phase, the voltage leads the current by 90

For capacitors in a circuit, the current and voltage through the inductor at 90deg out of phase, the current leads the voltage by 90

 

The relationship varies depending on