application to switching circuits

If too many electrical appliances of high power rating (like electric iron, water heater etc) are switched on at the same time, they draw an extremely large current from the circuit. This condition is called overloading and it can cause overheating of the wiring and lead to a f..

Electromagnetic Induction - Faraday and Henry performed lots of experiments to learn about the connection between electricity and magnetism. The results of these experiments have led to the life styles of todays men, who made life easy by using lots of electrical applications. Some of the..

is contamination by extraneous signals from human sources, other transmitters, power lines and machinery, switching circuits, etc. Interference occurs most often in radio systems whose receiving antennas usually intercept several signals at the same time. Radio-frequency interf..

x.y' + x.z + y.z' A Boolean expression can be regarded as a Boolean function since it has a unique value, either 0 or 1. The postulates, theorems or Boolean expressions in Boolean algebra hold good when the operation '+' and '.', the symbols '1' and '0' are interchanged, this is called principle ..

An 'OR' gate is a Boolean function with two variables defined by f(x 1 , x 2 ) = x 1 + x 2 x 1 , x 2 {0, 1} The above figure shows the 'OR' gate and the input-output table for OR gate is given in Table 11 which is similar to Table 6 (A circuit with two switches connected ..

. There is a color convention for wiring. According to this convention, the live line is carried by a wire with black insulation, the neutral by a wire with white insulation and the earth by a wire with green insulation. It is important that a live wire is not allowed to come in contact with the ne..

Modems - The 'modem' is a contraction of the term modulator-demodulator. It is a conversion that facilitates the transmission and reception of the data over the public switched telephone network (PSTN). The data of interest may be digital signals generated by computers or service provider..

The following figure shows a copper voltameter with copper electrodes. Current starts flowing in the circuit when the key is closed. Copper is removed from the anode and gets deposited on the cathode. The passage of current through the electrolyte is causing a chemical change. These chemi..

Ag dissolves into the solution and the released electron flow towards the positive end of the external source. In this process one electron circulates for the deposition of every silver atom on the cathode. Faraday's laws of electrolysis: (a) The mass of substance (m) deposited at the cathode (or d..