Skip to main content

Mesh analysis

Mesh analysis is based on Kirchhoff Voltage Law.  It uses the mesh currents as the circuit variables. we can use Mesh Analysis to find out the voltage, current or power through a particular element or elements.

Procedure for Mesh Analysis:

1. Identify all meshes of the circuit and Assign mesh currents and label polarities.

mesh1

for example above circuit has two meshes. mesh 1 is assigned with current I1 and mesh 2 is assigned with current I2. mesh 2

2. Apply KVL at each mesh and express the voltages in terms of the mesh currents.

In the above circuit by applying Kirchhoff's laws we have

Equation No 1 :    10 =  50I1 + 40I2

Equation No 2 :    20 =  40I1 + 60I2

3. Solve the resulting simultaneous equations for the mesh currents.

We now have two “Simultaneous Equations” that can be reduced to give us the values     of I1 and I2 .

mesh 4
Labels:

Comments

Post a Comment

Popular posts from this blog

Transistor

Introduction: A transistor is a semiconductor device which is used to amplify the signals as well as in switching circuits. Generally, it consists of three terminals emitter(E), base(B) and collector(C) and two P-N junctions. It is one of the active components. It was invented by John Bardeen, William Shockley and Walter Brattain in 1948, in Bell Telephone Laboratories. Transistors are divided into different types depending on their construction and operation. Transistors are basically classified into two types; they are Bipolar Junction Transistors (BJT) and Field Effect Transistors (FET). The BJTs are again classified into NPN and PNP transistors. The FET transistors are classified into JFET and MOSFET. Junction FET transistors are classified into N-channel JFET and P-channel JFET depending on their function. MOSFET transistors are classified into Depletion mode and Enhancement mode. Again depletion and enhancement mode transistors are classified into N-channel JFET and P-channel. d...
2 comments
Read more

P-N junction diode

A P-N junction diode is a basic diode. It is the combination of P-type and N-type semiconductor. symbol : P-N junction and potential barrier : A P-N junction is the basic building block of many semiconductor devices like diodes and transistors. P -n  junctions are formed by joining  n -type and  p -type semiconductor materials. Since the  n -type region has a high electron concentration and the  p -type a high hole concentration this difference in concentration creates density mismatch across junction which results to creation of potential barrier. The value of potential barrier v b  is 0.3 for germanium and 0.7 for silicon. Working : Forward bias: Application of positive charge at p-side pushes holes towards potential barrier and similarly negative charge at N-side pushes electrons towards barrier if input voltage is grater than potential barrier then electrons diffuse from the  n -type side to the p-type side. Similarly, holes flow by diffusion from the p-type side to the n-type side...
4 comments
Read more

inductor

An inductor is a passive electronic component that stores energy in the form of a magnetic field. In its simplest form, an inductor consists of a wire loop or coil. The inductance is directly proportional to the number of turns in the coil. Inductance also depends on the radius of the coil and on the type of material around which the coil is wound.   The standard unit of inductance is the Henry abbreviated H. This is a large unit. More common units are the micro Henry, abbreviated µH (1 µH =10 -6 H) and the milli Henry, abbreviated mH (1 mH =10 -3 H). Occasionally, the nano Henry (nH) is used (1 nH = 10 -9 H).             inductors in series & parallel : applications : Inductors are used extensively in analog circuits and signal processing. Applications range from the use of large inductors in power supplies, which in conjunction with filter capacitors remove  fluctuations from the direct current output.          
1 comment
Read more