Electronics encompasses those things we can neither hear, see, touch, or taste. Electrical voltage, current, and resistance are in-visible to the senses. Of course, you can directly sense an electrical shock, but to learn what’s going on within an electronic circuit, you must use test equipment. Test equipment is special apparatus designed to give visible or audible indications of what is there and what it is doing. Modern test instruments are amazingly versatile. They can do almost anything, if you know how to use them, how they work, and what their limitations are.

How to Test Almost Everything Electronic By Jack Darr

If you don’t know how to use test equipment properly, it is virtually useless. It is also just as important to know what a test instrument can’t do. All test instruments can make the tests for which they are designed. Most can make many other tests as well, if you know how the instruments work and how their readings can indicate the presence or absence of other electrical parameters. That’s what this book is about — electronic tests and measurements, how to make them with all types of electronic test equipment, and how to interpret the results.

Interpretation is the most important part of the whole process. It requires a full knowledge of both the test equipment and the circuits in which we’re taking the readings. Electronics is a rapidly growing field, with new developments appearing almost daily. Although the basic principles of electronics theory remain the same, often new technology calls for new test procedures. In this new third edition of How to Test

Almost Everything Electronic every attempt has been made to provide as much up-to-date information as possible. Now obsolete procedures involving tube circuits were featured heavily in the original edition. This no-longer-relevant material has been eliminated and replaced with expanded information on testing transistor and especially IC-based. circuitry.

Chapter 6 offers many Ups on testing various specific types of electronic components. A number of test procedures for television circuits are given in chapter 7. Chapter 8 features a number of more or less unclassifiable special test procedures including tests for various types of semiconductors. Chapter 9 coven signal tracing and alignment test Chapter 10 on digital circuits, has been significantly expanded in this edition in response to the growing emphasis on digital circuitry in modern commercial equipment of all types.

Finally 11 chapter it covers the important principles of flow-charting and troubleshooting complex systems comprised of multiple circuits. This information will help you pinpoint the problematic slaps saving a lot of lime that could be wasted in making unnecessary tests. Devoting a little lime to thinking about the circuit before you turn on your test equipment will never be wasted time. In fact, in the long run, most sensing jobs will go much faster.

As you will discover as you go through this book there are many shortcuts—combinations of instruments and so forth—that you can use to test almost any electrical quantity even those that might not appear to be within the range of your test equipment. A surprising number of electronic tests can be made with little more than a prim lamp, a neon lamp or a dc voltmeter. However, other tests require more sophisticated and expensive, equipment.

Although it is obviously impossible for any single volume to cover every possible type of electronic lest procedure our goal has been to offer as wide a range of generally applicable procedures as possible. In updating the material for this book we have tried to live up to the title as much as marble and help the reader learn ‘how to test almost everything electronic.”

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