(See related pages)
After studying this chapter, you should be able to:
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• Describe the construction of a JFET. |
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• Explain how an input voltage controls the output current in a JFET. |
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• Explain why the input impedance of a JFET is so high. |
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• Identify the schematic symbols of an n-channel and p-channel JFET. |
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• Explain the ohmic and current-source regions of operation for a JFET. |
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• Define the term gate-source cutoff voltage. |
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• Define the term pinch-off voltage. |
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• Explain why JFETs are referred to as "normally on" devices. |
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• Calculate the drain current in a JFET when IDSS, VGS, and VGS(off) are known. |
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• Explain the biasing techniques for JFETs. |
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• Define the term transconductance, gm. |
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• Explain the operation of the common-source, common-drain, and common-gate amplifiers. |
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• Explain the differences in construction and operation of a depletion-type and enhancement-type MOSFET. |
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• List the precautions to observe when handling MOSFETs. |