Monochrome TV Transmitter - Block Diagram and its Workings: The term monochrome stands for black and white. Thus a monochrome TV system does not process variations of colour in a…
Digital Modulation Techniques: An information bearing signal can be transmitted from one point to another point over a communication channel by using either an analog technique or digital modulation techniques.…
Basic Elements of Digital Communication System: Figure 23.3 shows the functional diagram and the basic elements of digital communication system. The source output may be either an analog signal like…
Visual Display Units (VDUs): Large arrays of characters can be built up using alphanumeric devices, already discussed, but the number of connections and the complexity of the drive-logic circuitry increase…
Photon Absorption Coefficient: Photon Absorption Coefficient - When light falls on a semiconductor, the photons may be absorbed or they may propagate through the semiconductor depending on the photon energy…
Classification of Pulse Signals: The Classification of Pulse Signals are divided into four categories, namely Periodic signals. Aperiodic signals. Random signals. Continuous and Discrete Signals 1. Periodic Signals: Periodic signals…
Miller Sweep Circuit and Miller Bootstrap Sweep Circuit: The basic R-C sweep circuit is shown in Fig. 30.134, in which opening of switch S provides sweep voltage, as already explained…
Uninterruptible Power Supply (UPS) - Block Diagram and its Workings: Uninterruptible Power Supply (UPS) - Most of us take the mains ac supply for granted and use it almost casually…