Electrical and Communication Engineering



Bio Medical Instruments

Bioinstrumentation or Biomedical Instrumentation is an application of biomedical engineering, which focuses on the devices and mechanics used to measure, evaluate, and treat biological systems. It focuses on the use of multiple sensors to monitor physiological characteristics of a human or animal.

Analog to Digital Converters

Analog-to-Digital converters (ADC) translate analog signals, real world signals like temperature, pressure, voltage, current, distance, or light intensity, into a digital representation of that signal

555 Timer and Application

555 Timer is a digital monolithic integrated circuit (IC) which may be used as a clock generator. In other words, 555 Timer is a circuit which may be connected as a stable or monostable multivibrator.

DMA and DMA Controller IC 8257

DMA stands for Direct Memory Access. It is designed by Intel to transfer data at the fastest rate. It allows the device to transfer the data directly to/from memory without any interference of the CPU.

ece 20 mobile communications

Wireless communication networks offer transmission of signals, such as voice, data, and multimedia, without using wires, which is the crucial part of mobile communications

Fibre Optics and Optical Communication System

Fiber-optic communication is a method of transmitting information from one place to another by sending pulses of infrared light through an optical fiber. The light is a form of carrier wave that is modulated to carry information

Introduction to Electrical Measuring Instruments

The instruments, which are used to measure any quantity are known as measuring instruments. This tutorial covers mainly the electronic instruments, which are useful for measuring either electrical quantities or parameters.

Introduction to Fibre Optic Communication

Fiber-optic communication is a method of transmitting information from one place to another by sending pulses of infrared light through an optical fiber. The light is a form of carrier wave that is modulated to carry information.

Introduction to Satellite Communication

Fiber-optic communication is a method of transmitting information from one place to another by sending pulses of infrared light through an optical fiber

Peripheral Interface Device IC 8255

PPI 8255 is a general purpose programmable I/O device designed to interface the CPU with its outside world such as ADC, DAC, keyboard etc. We can program it according to the given condition.

Printed Circuit Board Part 1 PCB Design

Printed circuit boards (PCBs) have become a fundamental staple at the heart of most electronic systems. In this new series, Robert examines the important aspects that are critical to good PCB design

Printed Circuit Board Part 2 PCB Processing

The first step of PCB assembly is applying a solder paste to the board. This process is like screen-printing a shirt, except instead of a mask, a thin, stainless-steel stencil is placed over the PCB.

Programmable Key Board Display Controller IC 8279

8279 programmable keyboard/display controller is designed by Intel that interfaces a keyboard with the CPU. T

Programmable TimerCounter IC 8253

The Intel 8253 and 8254 are Programmable Interval Timers (PTIs) designed for microprocessors to perform timing and counting functions using three 16-bit registers.

Railway Electrification Part 1 Power Supply Arrangement

Rail transport has been evaluated as an environment-friendly transportation system, helping to solve environmental pollution, energy resources shortage, and chronic traffic congestion problems in developing countries

Railway Electrification Part 2 Overhead Equipment

lectric trains that collect their current from overhead lines use a device such as a pantograph, bow collector or trolley pole. It presses against the underside of the lowest overhead wire, the contact wire. Current collectors are electrically conductive and allow current to flow through to the train or tram and back to the feeder station through the steel wheels on one or both running rails

SCR Silicon Controlled Rectifier

A silicon controlled rectifier or semiconductor controlled rectifier is a four-layer solid-state current-controlling device. The name "silicon controlled rectifier" is General Electric's trade name for a type of thyristor.

Serial Communication and Usart IC 8251

8251 is a Universal Synchronous and Asynchronous Receiver and Transmitter compatible with Intel?s processors. This chip converts the parallel data into a serial stream of bits suitable for serial transmission

Wireless Communication

Wireless communication (or just wireless, when the context allows) is the transfer of information between two or more points that do not use an electrical conductor as a medium for the transfer. The most common wireless technologies use radio waves.