JUNCTION FIELD-EFFECT TRANSISTORS

Chapter 5 JUNCTION FIELD-EFFECT TRANSISTORS

Lessons In Electric Circuits Volume III – Semiconductors Book
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Summary of Contents

Lessons In Electric Circuits Volume III – Semiconductors Book

  • Chapter 5JUNCTION FIELD-EFFECTTRANSISTORSContents 292,5.1 292,Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283 294,5.2 294,The 294,transistor 294,as 294,a 294,switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285 297,5.3 297,Meter 297,check 297,of 297,a 297,transistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288 299,5.4 299,Active-mode 299,operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290 308,5.5 308,The 308,common-source 308,amplifier 308,– 308,PENDING . . . . . . . . . . . . . . . . . . . 299 309,5.6 309,The 309,common-drain 309,amplifier 309,– 309,PENDING . . . . . . . . . . . . . . . . . . . . 300 309,5.7 309,The 309,common-gate 309,amplifier 309,– 309,PENDING . . . . . . . . . . . . . . . . . . . . 300 309,5.8 309,Biasing 309,techniques 309,– 309,PENDING . . . . . . . . . . . . . . . . . . . . . . . . . . 300 310,5.9 310,Transistor 310,ratings 310,and 310,packages 310,– 310,PENDING . . . . . . . . . . . . . . . . . 301 310,5.10 310,JFET 310,quirks 310,– 310,PENDING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301*** INCOMPLETE ***5.1IntroductionA transistoris a linear semiconductor device that controls current with the application of alower-power electrical signal. Transistors may be roughly grouped into two major divisions:bipolarand field-effect. In the last chapter we studied bipolar transistors, which utilize a smallcurrent to control a large current. In this chapter, we’ll introduce the general concept of thefield-effect transistor – a device utilizing a small voltageto control current – and then focuson one particular type: the junctionfield-effect transistor. In the next chapter we’ll exploreanother type of field-effect transistor, the insulated gatevariety.All field-effect transistors are unipolarrather than bipolardevices. That is, the main cur-rent through them is comprised either of electrons through an N-type semiconductor or holes283