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JFET - Wikipedia, the free encyclopedia
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MOSFET - Wikipedia, the free encyclopedia
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Notes on BJT & FET Transistors. ... The Field Effect Transistor (FET) is an active device. In simple terms, it is a voltage controlled valve. The gate-source voltage (VGS) controls the drain current (ID). ... BJT Schematic Symbols (Mnemonics for remembering the direction of the arrows are in parenthesis.)
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The key to FET operation is the effective cross-sectional area of the channel, which can be controlled ... FET correspond to the elements of the FET just as they do for the elements of transistors.
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The elements of one type of FET, the junction type (JFET), are compared with the bipolar transistor and the vacuum tube in figure 3-44. As the figure shows, the JFET is a three-element device comparable to the other two. ... Figure 3-44. - Comparison of JFET, transistor, and vacuum tube symbols.
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It is pointed out that the FET symbols shown in FIG. 2 each represent a large number of cells. Thus, even the area with the fewest cells contains a sufficient number of cells so that operational variations between individual cells are averagedout.
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A circuit for performing window-relative dithering of intensity data comprises a programmable dither cell; circuitry for comparing dither values stored in the dither cell with selected parts of the intensity values and outputting an increment signal in accordance with the results of the comparison;
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