## Capacitance Bridge Working Principle

AC bridges are used for measurement of inductances and capacitances. All AC bridge circuits are based on Wheatstone bridge. Figure 1(a) shows the circuit of a simple capacitance bridge. Cs is a precise standard capacitor, Cx is an unknown capacitance, and Q and P are standard resistors, one or both …

## Single Phase Voltage Calculation | Matlab

Here, we will find phase voltages VAN, VBN, and VCN, shown in the following figure, using Matlab. By applying KVL, we come up with the following three equations: $\begin{matrix} 110\angle {{0}^{o}}=(1+j1){{I}_{1}}+(5+j12){{I}_{1}} & \cdots & (1) \\ 110\angle -{{120}^{o}}=(1-j2){{I}_{2}}+(3+j4){{I}_{2}} & \cdots & (2) \\ 110\angle {{120}^{o}}=(1-j0.5){{I}_{3}}+(5-j12){{I}_{3}} & \cdots & (3) \\\end{matrix}$ …

## RL Circuit Charging Discharging | Matlab

In this tutorial, we will see an inductor current behavior in an RL Circuit using Matlab. For the simplified RL circuit demonstrated below, an electric current flowing through an inductor is zero initially. At t = 0, the switch actuated from location a to b, where it stayed for 1 …

## Time Constant of RC Circuit | Matlab

In this tutorial, we will draw capacitor voltage for different time constants and analyze how it affects the charging time. Let’s assume we have a capacitor of $10\mu F$ capacitance and want to draw voltage across capacitor if: \begin{align} & (a)R=1k\Omega \\ & (b)R=10k\Omega \\ & (c)R=0.11k\Omega \\\end{align} We will use the …

## Average Power RMS Voltage RMS Current Power Factor Calculation using Matlab

In this tutorial, we will calculate average power, RMS Voltage, RMS Current as well as power factor using Matlab. Let’s say we have following values of voltage and current: \begin{align} & v(t)=10\cos (120\pi t+{{30}^{o}}) \\ & and \\ & i(t)=6\cos (120\pi t+{{60}^{o}}) \\\end{align} We use the following formula to calculate the RMS …

## Nodal Analysis using Matlab | Nodal Analysis using Matrices

In this tutorial, we will find node voltages for a very simple resistive circuit using Nodal Analysis. While applying KCL, we will assume that currents leaving the node are positive and entering the node are negative. Keeping that fact in mind, let’s write node voltages for each node in the …

## Mesh Analysis using Matlab | Loop Analysis using Matlab

In this tutorial, we will find current which is flowing through resistor RB and the power supplied by the voltage source of 10V. First, let’s assign currents for each loop as I1, I2 and I3 and the power supplied by the source is 10*I1 as we can see from the …

## Inverse Laplace Transform of a Transfer Function Using Matlab

In this topic, we will find out how to calculate inverse Laplace of a transfer function using Matlab. Let’s find out Inverse Laplace of the following function $X(s)\frac{10{{s}^{2}}+20s+40}{{{s}^{3}}+12{{s}^{2}}+47s+60}=\frac{Numerator}{Denumerator}$ Let’s write a little code in Matlab now: Results: Here, we get the following results: Residue =    95.0000  -120.0000    35.0000 …

## Series RL Circuit Analysis using Matlab

Determine the voltage across the inductor in series RL circuit : Let us compute the voltage across the capacitor for t≥0 using the following expression: ${{v}_{L}}(t)={{V}_{s}}{{e}^{-t/\tau }}u(t)$ Whereas the source voltage is 1V and time constant τ=L/R. You May Also Read: Series RL Circuit Analysis Theory It’s time to write …