How do capacitors effect power factor?
By changing the total reactance of a circuit.
The Power Factor is the cos
Supose you have an R-L series circuit, as in the figure 1 below:
The impedance Z is the vectorial sum betweem R and XL (inductive reactance), as shown in Figure 2. The angle
Now, we introduce a capacitor in the circuit (Figure 3). The capacitive reactance is opposite to the inductive reactance and the total reactance is the difference (XT = XL-XC) and the impedance will be the vectorial sum between the resistance R and the total reactance (Figure 4).
Once XT < XL, the angle