Digital Multimeter
Digital Multimeter A digital multimeter (DMM) displays the quantity measured as a number, it eliminates parallax errors. Definition A multimeter is an electronic instrument that can measure resistance, currents, and…
Dispersion in Optical Fibers
Dispersion in Optical Fibers Dispersion in Optical Fibers : Dispersion, also known as pulse spreading, means spreading out of an optical pulse of light energy in time as it propagates…
Facsimile (Fax) Machine
Facsimile Fax (short for facsimile, from Latin fac simile, “make similar”, i.e. “make a copy”) is a telecommunications technology used to transfer copies (facsimiles) of documents, especially using affordable devices…
PLC vs Relay Logic Controller
PLC vs Relay Logic Controller: In this post, we are going to discuss the differences between PLC vs Relay Logic Controller. Before the differences of PLC vs Relay Logic Controller,…
Zener Vs Avalanche Breakdown
Zener Vs Avalanche Breakdown Break Down Mechanisms Zener Vs Avalanche Breakdown: When an ordinary P-N junction diode is reverse biased, normally only very small reverse saturation current flows. This current…
Potentiometer | working, application
Potentiometer A potentiometer is a variable resistor that is used to convert a linear or angular displacement into voltage. Since the resistance varies according to the linear/angular displacement of sliding/wiper…
Block Diagram Reduction Technique
Block Diagram Reduction Technique Block Diagram Reduction Technique: A block diagram is a diagrammatic representation of the cause-and-effect relationship between the input and output of a physical system represented by…
Schottky Barrier Diode
Schottky Barrier Diode Schottky Barrier Diode is a simple metal-semiconductor interface exhibiting anon-linear impedance and is basically an extension of the point-contact diode. When the diodes are forward biases current…
Transmission Errors
Transmission Errors No physical medium can guarantee error-free transmission of data. Errors occur because of interference from the environment surrounding the transmission medium or because of artifacts introduced by the…
Colour Signal Transmission
Colour Signal Transmission Colour Signal Transmission: The colour video signal contains two independent pieces of information, that of hue and saturation. It is a difficult matter to modulate them to…
