Anglicky v odborných předmětech " Support of teaching technical subjects in English “

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Anglicky v odborných předmětech " Support of teaching technical subjects in English “. Tutorial : Mechanic - electrician Topic : Technical training II. c lass Transistors 2 Prepared by: Melichařík Lubomír. Projekt Anglicky v odborných předmětech, CZ.1.07/1.3.09/04.0002
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Anglicky v odborných předmětech"Support of teaching technical subjects in English“Tutorial: Mechanic - electricianTopic: Technicaltraining II. classTransistors 2Prepared by: Melichařík LubomírProjekt Anglicky v odborných předmětech, CZ.1.07/1.3.09/04.0002je spolufinancován Evropským sociálním fondem a státním rozpočtem České republiky.TRANSISTORS 2
  • UNIPOLAR TRANSISTORS
  • -transistors driven by the electric field
  • -has (at least) three electrodes, which are referred to as drain, gate, source
  • -unipolar transistors are referred to as N-FET or P-FET.
  • TRANSISTORS 2
  • Electrotechnical schematic symbol of a JFET transistor
  • TRANSISTORS 2
  • Electrotechnical schematic symbol of a transistor MOSFET induced
  • TRANSISTORS 2
  • Electrotechnical schematic symbol of a transistor MOSFET embedded
  • TRANSISTORS 2
  • TYPES OF UNIPOLAR TRANSISTOR
  • JFET- (Junction FET) control electrode(gate) is formed by reverse polarized transition PN.
  • -transistor works in a so-called depleted mode - at zero voltage it is fully open
  • - in the reverse polarized transition the conductive channel narrows
  • MOSFET- (Metal Oxide Semiconductor FET) control electrode(gate) is isolated from the rest of the transistor oxide. It can work in the depleted and enriched mode.
  • -in the transistor MOSFET with an induced channel N there is a conducting channel only after applying the positive U, thus it only works in the enriched mode.
  • - for transistors with a channel with a semiconductor-type P there are opposite voltages
  • TRANSISTORS2
  • TYPES OF UNIPOLAR TRANSISTORS
  • -MESFET- (Metal Semiconductor FET) control electrode(gate) is formed by reverse polarized transition metal-metalloid.-MISFET- (Metal Insulated Semiconductor FET) Common name for a transistor with an insulated control electrode. Insulator need not be just carbon (eg ... nitride).Activities for Students – mandatory slideTask, test, questions … .
  • 1. What is a unipolar transistor?
  • 2. How many electrodes has a unipolar transistor?
  • 3. What are thenamesoftheelectrodes?
  • 4. Describe the basic types of unipolar transistors
  • Activities for students – mandatory slideTask, test, questions … . Two slides are best.
  • 1. Draw the schematic symbol for a JFET transistor.
  • 2. Draw the schematic symbol of a transistor MOSFET induced.
  • 3. Draw the schematic symbol of a transistor MOSFET embedded.
  • Bibliography
  • Václav Malina Poznáváme elektroniku I.
  • Adrian Schommers Elektronika tajemství zbavená.
  • ISBN 3-92608-32-5
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