How electronic things workb P5

... several direct digital satellite TV systems are in operation around the world. This chapter shows how these systems work and gives you information on various items you can check if the receiver ... TV Keeping the satellite on track Powering the satellites DBS Satellite Overview How the Satellite System Works How the RCA system works The DirectTV satellites Controlled Diagnostics for Tr...

Ngày tải lên: 10/04/2014, 14:00

... are constructed, and how to test them. You’ll be shown how to use a volt-ohm meter (or multimeter) to check the voltage and resistance found in electronic circuits. You’ll learn how to build a simple ... introduction to electronics—“Very Basic Electronics 101.” The chapter contains photos and drawings of the components found in your electronic devices with explanations of what they...

Ngày tải lên: 10/04/2014, 13:56

... occurs? 42 INTRODUCTION TO VERY BASIC ELECTRONICS “101” FIGURE 1-60 Some basic tools you will need for electronic equipment repairs. ■ How does it perform or not perform? ■ How often does it occur? Is ... also very useful. Figure 1-60 shows some of these basic electronic tools needed for repair work. The following is a list of basic tools you should find useful for electronic repair...

Ngày tải lên: 10/04/2014, 13:57

... oscillator circuit is shown. The bias oscillator signal is fed to the left and right recording heads and to the erase head. 3 AUDIO/VIDEO AND CD PLAYER OPERATIONS 91 CONTENTS AT A GLANCE How CD and Laserdisc ... Work Skip, search, and scan operation How the laserdisc is made DVD Discs DVD technology Laser light and laser diode information CD player sections The electronics PC board The...

Ngày tải lên: 10/04/2014, 13:58

... of a color set have previously been explained in this chapter, so now see how the CRT develops a color picture. 138 HOW COLOR TVS AND PC MONITORS WORK Red gun Green gun Blue gun Deflection yoke Shadow ... with a dot shadow mask. As shown in Fig. 4-20A and 4-20B, the metal mask has evenly spaced holes with RGB phos- phors clustered on the glass faceplate in groups of three. However, this t...

Ngày tải lên: 10/04/2014, 13:59

... apart so that you will know how to put it back together after repairs and cleaning is completed. How to take apart the cassette lid and deck The following three drawings show all of the steps for ... of the Sony Handycam recorder shown in Fig. 7-25. This Sony 8-mm camcorder has been placed on a service bench to undergo cleaning and/or repairs. Figure 7-26 shows how the Handycam case can...

Ngày tải lên: 10/04/2014, 14:02

... automatically opens up two unused channels to complete the call. HOW THE CELL PHONE OPERATES The cellular phone packs a lot of sophisticated electronic components into a very small space. In fact, it ... pager. To repair them, you need to be a highly trained electronics technician and have very spe- cialized and expensive test instruments. However, later in this chapter, some repair tips...

Ngày tải lên: 10/04/2014, 14:02

... electric typewriters. A drawing of the daisywheel layout is shown in Fig. 10-1. A photo with two daisywheels is shown in Fig. 10-2. Figure 10-3 shows the actual placement of the daisy- wheel in a PWP ... Monitoring control panel key operation HOW IMAGES ARE TRANSFERRED TO PAPER To copy an image on paper with the laser printer, the process requires the interaction of electronic circuits, o...

Ngày tải lên: 10/04/2014, 14:03

... good cleaning. 390 BASIC CONSUMER ELECTRONICS SERVICE AND MAINTENANCE GLOSSARY 391 Use this glossary to help you better understand some of the terms used in explaining How Electronic Things Work” in these ... required, unless the unit has had rough usage. NOTES FOR PRINTERS The electronic portion of an ink-jet printer is usually very reliable. However, you should be on the lookout for...

Ngày tải lên: 10/04/2014, 14:04

... Introduction to very basic electronics “101” How resistors work ● Reading resistor color codes ● Resistor problems ● Electronic circuit-protection devices (fuses) ● How capacitors work ● Tips ... troubles and checks ● Transistors, ICs, and diodes ● How transistors and solid-state devices work ● Solid-state scope sweep checker ● Electronic power supplies ● Electronic circuit solder...

Ngày tải lên: 12/12/2013, 21:47