Reactive power (Q) is the oscillating energy exchange in AC circuits due to inductors and capacitors, which does not contribute to real power (P). When the circuit is a DC circuit, we can quickly multiply volts by amps to get watts of power used. This is true to purely resistive AC circuits as well. But […]
Calculating Average Voltage of Sinusoidal Waveform
Finding the average voltage of an alternating waveform is similar to finding its RMS value, but without squaring the instantaneous values or taking the square root of the final average. The average voltage (or current) of any waveform for example like a sine wave, square wave, or triangular wave, is like a DC value for […]
Calculating Root Mean Square (RMS) Voltage
In the preceding AC Waveform analysis we introduced the concept of RMS (Root-Mean- Square) voltage applicable to sinusoidal waveforms. We learned that, the RMS voltage of a sine wave corresponds to the DC voltage level that would produce identical heating in a resistive element. This tutorial expands upon this foundation, by investigating into a more […]
Calculating Parallel RLC Resonance Circuit
Like series circuits, parallel RLC circuits (containing inductors and capacitors) are second-order with a resonant frequency. Both are affected by frequency changes. However in parallel resonance, it is the current through the circuit that reaches a minimum at resonance, not the impedance. The focus here is, how currents in each branch of the parallel LC […]
Calculating Series RLC Resonance Circuit
Here we will explore how circuits that contain resistors (R), inductors (L), and capacitors (C) respond to different frequencies. These circuits, called resonant circuits, behave differently depending on the frequency of the signal running through them. In this tutorial, we’ll focus on a specific type called a series resonant circuit. We’ll also learn how to […]
Calculating Parallel RLC Circuit
In contrast to the series circuit we examined in the previous tutorial, the Parallel RLC Circuit has the opposite characteristics. However, some of the concepts and equations we learned before are still relevant. To simplify the mathematical analysis of parallel RLC circuits, this tutorial assumes that the components are pure, meaning that they have no […]