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Study Guides

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  • 1.

    Capacitance Help

    Introduction Capacitance impedes the flow of ac charge carriers by temporarily storing the energy as an electrical field. This energy is given back later. Capacitance generally is not important in pure dc circuits, but it can have significance ...

  • 2.

    Capacitive Reactance Help

    Introduction Inductive reactance has its counterpart in the form of capacitive reactance . This, too, can be represented as a ray starting at the same zero point as inductive reactance but running off in the opposite direction, having ...

  • 3.

    RLC Impedance Help

    Introduction We’ve seen how inductive and capacitive reactance can be represented along a line perpendicular to resistance. In this section we’ll put all three of these quantities— R, X

  • 4.

    More About Alternating Current Practice Test

    Review the following concepts if needed: Inductance Help

  • 5.

    The Diode Help

    Introduction The term semiconductor arises from the ability of certain materials to conduct part time. Various mixtures of elements can work as semiconductors. There are two types of semiconductors, called n type, in which most of the charge ...

  • 6.

    The Bipolar Transistor Help

    Introduction Bipolar transistors have two p-n junctions connected together. This can be done in either of two ways: a p -type layer between two n -type layers or an n -type layer between two p -type layers. ...

  • 7.

    Current Amplification Help

    Introduction Because a small change in I B results in a large I C variation when the bias is right, a transistor can operate as a ...

  • 8.

    The Field-Effect Transistor Help

    Introduction The other major category of transistor, besides the bipolar device, is the field-effect transistor (FET). There are two main types of FETs: the junction FET (JFET) and the metal-oxide FET (MOSFET).

  • 9.

    Voltage Amplification Help

    Introduction The graph in Fig. 16-11 shows the drain (channel) current, I D as a function of the gate bias voltage E

  • 10.

    The MOSFET Help

    Introduction The acronym MOSFET (pronounced “MOSS-fet”) stands for metal-oxide-semiconductor field-effect transistor . A simplified cross-sectional drawing of an n -channel MOSFET and its schematic symbol are shown in Fig. ...

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