Tham khảo tài liệu 'chapter 7: junction field-effect transistors', kỹ thuật - công nghệ, điện - điện tử phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | CHAPTER 7 Junction Field-Effect Transistors copyright 2002 Delmar Thomson Learning OBJECTIVES Describe and Analyze JFET theory JFETS vs. Bipolars JFET Characteristics JFET Biasing JFET Circuits Applications Troubleshooting copyright 2002 Delmar Thomson Learning itd edition OFl IVIAR ---- -------- T1 lOM- .ON HAHN NG Funda Integra JAMES COX Introduction JFETs have three leads drain gate and source which are similar to the collector base and emitter of a bipolar junction transistor BJT . JFETs come in N-channel and P-channel types similar to NPN and PNP for BJTs. JFETs conduct majority carriers while BJTs conduct minority carriers. The gate of a JFET is reverse biased the base of a BJT is forward biased. JFETs have high Zin BJTs have low Zin. JFETs are more non-linear than BJTs. copyright 2002 Delmar Thomson Learn .
