A note about notation

Chapter A note about notation

Teach Yourself Electricity and Electronics Third Edition Book
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Teach Yourself Electricity and Electronics Third Edition Book

  • A note about notationIn electronics, you’ll encounter various different symbols that denote the same things.You might have already noticed that voltage is sometimes abbreviated by the letter E,and sometimes by the letter V. In bipolar and field-effect transistor circuits, you’ll some-times come across symbols like VCE and VGS; in this book they appear as EC and EG, re-spectively. Subscripts can be either uppercase or lowercase.Remember that, although notations vary, the individual letters almost always standfor the same things. A variable might be denoted in different ways, depending on theauthor or engineer; but it’s rare for one notation to acquire multiple meanings. The mostcommon sets of abbreviations from this chapter and chapter 22 are shown in Table 23-1.Wouldn’t it be great if there were complete standardization in electronics? And itwould be wonderful if everything were standardized in all other aspects of life, too,would it not?Or would it?QuizRefer to the text in this chapter if necessary. A good score is at least 18 correct. Answersare in the back of the book.1. The current through the channel of a JFET is directly affected by all of thefollowing except:A. Drain voltage.B. Transconductance.C. Gate voltage.D. Gate bias.2. In an N-channel JFET, pinchoff occurs when the gate bias is:A. Slightly positive.B. Zero.C. Slightly negative.D. Very negative.3. The current consists mainly of holes when a JFET:A. Has a P-type channel.B. Is forward-biased.C. Is zero-biased.D. Is reverse-biased.4. A JFET might work better than a bipolar transistor in:A. A rectifier.B. A radio receiver.C. A filter.D. A transformer.Quiz429