جهاز الاستقبال - المبادىء - الدارات .. كتاب التلفزيون الملون والعادي

the introduction

It has become clear that television is of great importance, not only in home use as entertainment, culture and follow-up of events, but also in every field of life. The horizons of its use have expanded after the rapid and wide development - especially in recent decades - in the field of broadcasting via satellites, which follow specific astronomical paths, to transmit the event at the moment of its occurrence from any part of the world to hundreds of millions of viewers everywhere, with sound and live color images. This development was aided by the progress that took place in computers and video, so the television set was an indispensable part with each of them to show information, images and data, and television entered the field of school, university and vocational education with its closed or open circuits and of both types, wired and wireless, and in monitoring the workflow and production in factories and power plants , shops, exhibitions, doors of establishments, embassies and banks. It was used in places where there are dangers such as atomic stations and under water using cameras with advanced specifications.

In order to realize the functioning of the modern television set, and then to practice maintenance and repair work, it is necessary to study the principles of electronic science and the elements that make up the circuits, their properties, the method of testing them, and the examination, measurement and calibration devices. And the principles of work of the global devices, circuits and systems that operate on them. We have simplified the principles of electronic sciences in the second part of our book (The Simplified for Electrical and Electronic Engineering Sciences) to be a pillar and a basis for reaching the required.

This book included all the necessary principles and important circuits in modern television, then color. With what it contains of integrated circuits, a computer processor, and remote controls (remote control). It contains models of faults and the method of detecting and repairing them. Several important model diagrams are attached to it. I based it on the book (Electronic Television) by its authors Milton Kiefer and Milton Kaufman from colleges and institutes in the United States. And I benefited from other Arab and foreign references, to which I am grateful and thankful for their esteemed authors. By God, I ask that this be a service to useful knowledge, regardless of the use of this device and its broadcast materials. It is like any tool that we judge on its effectiveness and legitimacy according to the purpose harnessed for it, and we hope that it will be useful if directed. For what is more useful and better, and God is the Grantor of success

Mohamed Abdel Rahman Al Daghli Diploma in Electrical and Electronic Engineering from France
Chapter One:

Receiver - Principles - Circuits

Introduction: Television is the science of transmitting sound and moving images from the transmitter to the receiver, by means of radio-frequency (RF) electromagnetic waves or by using coaxial cables in closed circuits (CCTV).

Television has spread in domestic, educational, cultural, industrial, commercial and military use. Extensive improvements were made in its systems, circuits, and components, and this forced the technicians to actively pursue its developments. and manufacture it

It is well known that the first regular television - black and white - appeared in 1941 and it contained dozens of valves, then the transistor and integrated circuits (IC) entered its manufacture. After that, color television spread, and space stations and satellites participated in transmission, relay, and reception operations, and finally, with the spread of video equipment, home cameras, remote control systems, and digital systems in it, this device almost became a pinnacle in technology and electronic science.