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Field Effect Transistors

Field Effect Transistors. Tim Morgan. Basic Diagram. Important Fundamentals. Insulating the gate from the active channel. Insulating material (e.g. SiO 2 ) Schottky Barrier or pn junction Voltage on gate modulates active channel. Types of FETs. MOSFET JFET HFET MESFET SET. MOSFET.

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Field Effect Transistors

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  1. Field Effect Transistors Tim Morgan

  2. Basic Diagram Transport 11.8.06

  3. Important Fundamentals • Insulating the gate from the active channel. • Insulating material (e.g. SiO2) • Schottky Barrier or pn junction • Voltage on gate modulates active channel. Transport 11.8.06

  4. Types of FETs • MOSFET • JFET • HFET • MESFET • SET Transport 11.8.06

  5. MOSFET • Metal-Oxide-Semiconductor FET • “inversion” has to happen, so that the semiconductor will be n-type and conduct more electrons Transport 11.8.06

  6. JFET Transport 11.8.06

  7. HFET Transport 11.8.06

  8. ???? Transport 11.8.06

  9. ???? Transport 11.8.06

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