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Bakshi, A. Godse Basic Electronics Engineering. Click on the All the text books below are free to download and these are the books which belong to the Electronics and Micro processors and interfacing by Godse Electronic Circuit Analysis by K. Lal Kishore. Communication Engineering - A. Godse U.

Lal Kishore. Communication Engineering - A. Godse U. Basics of electronics theory Introduction to basic counselling skillseletronicstuff-sunshine. Basic Electronics by A. Bakshi booksandmags4ubeyondtrainingbook. Godse A. To understand the applications of the electromagnetic waves in free space. Free Tutorial for. Godse d A. Godse free with p. Godse, U A. Analog And Digital Electronics by U. Bakshi and A.

Godse All www. Godse in English and here it is Torrent. Resistance is measured in ohms 2. The inductance is rv denoted by 'L' and it is measured in Henry H. For inductance, the voltage is proportional to the rate Fig. Energy stored in an inductor. For capacitor, the voltage is proportional to the charge. Energy stored in a capacitor. Key Point : While calculating energy stored in the capacitor, V must be voltage across capacitor. Two inductors L and L2 are connected in series.

The currents flowing through L; and L; are i and iz while voltages developed across Ly and Lp are V1 and V2 respectively.

The equivalent circuit is shown in the Fig. Koy Point : The total equivalent inductance of the series circuit is sum of the inductances connected in series. Two capacitors C; and C are connected in series. The currents flowing through and voltages developed across. C and C2 are iy, iy and Vo: and Vez respectively.

The equivalent cireuit is shown in the Fig. Key Point : The reciprocal of the total equivalent capacitor of the series combination is the sum of the reciprocols of the individual capacitors, connected in series.

What is the equivalent capacitance of tie combination? In parallel circuit current passing through each resistance is different. There are 3 paths for this current, one through Rj, second through Rp and third through R3.

Depending upon the values of R,,Rz and R3 the appropriate fraction of total current passes through them. These individual currents are shown as I ,1 and Fig. Now let us study current distribution. Apply Ohm's law to each resistance. The total current is always sum of all the individual currents. Thus the voltage source is as shown in the Fig. If such combinations are replaced by the equivalent source then the network simplification becomes much more easy. Let us consider such series and parallel combinations of energy sources.

Consider the two sources as shown in the Fig. Mt C oO. The polarities of such source is same as that of the greater of the two sources. The technique can be used to reduce the series combination of more than two voltage sources connected in series.

It must be noted that at the terminals open circuit voltage provided by cach source must be equal as the sources are in parallel. The equivalent single source has a value same as I; and Ip. Key Point : The current through series circuit is always same hence it must be noted that the current sources to be conmected in series must have same current ratings though their voltage ratings may be same or different.

Key Point : The current sources to be connected in parallel must have same voltage ratings though their current ratings may be same or different. These laws are of tremendous importance from network simplification point of view.

This analysis of currents entering and leaving is nothing but the application of Kirchhoff's Current Law. The law can be stated as, The total current flowing towards a junction point is equal to the total current flowing away from that junction point, Another way to state the law is, The algebsaic sum of all the current meeting at a junction point is always zero.

Refer to Fig, 1.

Sum of all the potential rises must be equal to sum of all the potential drops while tracing any closed path of the circuit. The total change in potential along a closed path is always zero. This law is very useful in the loop analysis of the network.

The current always flows from higher potential to lower potential. Once all such polarities are marked in the given circuit, we can apply KVL to any closed path in the circuit. This is called potential rise. This is called potential drop. For example, in the Fig, 1. Similarly in the Fig. Key Point : 1 Potential rise ie. As the loop is assumed to be a part of complex network, the branch currents are assumed to be different from each other.

Due to these currents the various voltage drops taken place across various resistances are marked as shown in the Fig. Let us trace this closed path in clockwise direction i. Battery E, is getting traced from negative to positive ie.

Across R3 there is a drop 13 R3 and as getting traced from ve to —ve, it is drop and must be taken as negative. Key Point : So while applying KVL, direction in which loop is to be traced is not important but following the sign convention is most important. The same sign convention is followed in this book to solve the problems. Step 1: Draw the circuit diagram from the given information and insert all the values of sources with appropriate polarities and all the resistances.

Stop 2: Mark all the branch currents with some assumed directions using KCL at various nodes and junction points.

Kept the number of unknown currents minimum as far 48 possible to limit the mathematical calculations required to solve them later on. Assumed directions may be wrong, in such case answer of such current will be mathematically negative which indicates the correct direction of the current.

This is necessary for application of KVL to various closed loops. Step 4: Apply KVL to different closed paths in the network and obtain the corresponding equations. Each equation must contain some element which is not considered in any previous equation. Key Point: KVL must be applied to sufficient number of loops such that each element of the network is included atleast once in any of the equations. Stop 5: Solve the simultaneous equations for the unknown currents. From these currents unknown voltages and power consumption in different resistances can be calculated.

What to do if current source exists 7 Key Point : if there is current source in the network then complete the current distribution considering the current source. But white applying KVL, the loops should not be considered involving current source.

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