Transcription of Field Effect Transistors in Theory and Practice ...
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Field Effect Transistors in Theory and Practice ...
AN211A1RF Application InformationFreescale SemiconductorField Effect Transistors in Theoryand PracticeINTRODUCTIONT here are two types of Field - Effect Transistors , the JunctionField- Effect Transistor (JFET) and the Metal-OxideSemiconductor Field - Effect Transistor (MOSFET), orInsulated-Gate Field - Effect Transistor (IGFET). Theprinciples on which these devices operate (current controlledby an electric Field ) are very similar the primary differencebeing in the methods by which the control element is difference, however, results in a considerable differencein device characteristics and necessitates variances in circuitdesign, which are discussed in this JFETP-CHANNEL JFETDRAINGATESOURCEJUNCTION Field - Effect TRANSISTOR (JFET)In its simplest form the junction Field - Effect transistor startswith nothing more than a bar of doped silicon that behavesas a resistor (Figure 1a).
JUNCTION FIELD-EFFECT TRANSISTOR (JFET) Inits simplest formthejunctionfield-effect transistorstarts with nothing more than a bar of doped silicon that behaves as a resistor (Figure 1a). By convention, the terminal into which current is injected is called the source terminal, since, as far as the FET is concerned, current originates from this ...
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