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FET Output Stages
The Characteristics of Power FETS
Power FETs and Bipolars: the Linearity Competition
The Characteristics of Power FETS
A field-effect transistor (FET) is essentially a voltage-controlled device. So are bipolar junction transistors (BJTs), despite a wrong-headed minority that persists in regarding them as current-controlled. They really are not, even if BJT base currents do happen to be non-negligible.
The power FETs normally used are enhancement devices — in other words, with no voltage between gate and source, they remain off. In contrast, the junction FETs found in small-signal ...
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