Showing posts from 2013

Dr B Somanathan Nair

Dr. B Somanathan Nair, one of the top engineering text book author of India. He was born on September 1, 1950 in Kerala, Ind…

Digital Signal Processing

In figure below, x(t) is the input signal (analog signal) and y(t) is the analog output signal. The input signal x(t) may be…

Analog Signal Processing

A physical device that performs an operation on a signal is called as a system. Example: For reducing the noise corrupting a…

NPN and PNP Transistor Structure

The BJT (Bipolar junction Transistor) can be constructed by using three doped semiconductor regions separated by two p-n jun…

Basic NPN and PNP Transistor Operation

For correct operation if a transistor, the two pn junctions must be correctly biased with  the externally applied dc voltage…

Power Supply Filters and Regulators

Power Supply Filters and Regulators:  We know that a pulsating dc wave is the output of the rectifier circuit. Our ultimate …

Diode Limiting and Clamping Circuits

Diode limiting and Clamping Circuits . 1) Limiters: The Diodes can be used to clip off (To cut the waveform) portions of si…

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