Showing posts from April, 2013

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…

The Transistor as an Amplifier

The process of linearly increasing the amplitude of an electrical signal is called as Amplification. The signal can be defin…

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