Key Facts from Reading: Difference between revisions
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The following facts are not profound and are possibly very obvious. Nonetheless, they might help cement certain concepts. Please add things you think would be helpful. |
The following facts are not profound and are possibly very obvious. Nonetheless, they might help cement certain concepts. Please add things you think would be helpful. |
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==Transistors== |
==Transistors== |
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*Conduction in n-type material is from free electrons |
*Conduction in n-type material is from free electrons. |
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*Conduction in p-type material is from holes (positive particles) |
*Conduction in p-type material is from holes (positive particles). |
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* |
*The function of metal-oxide-semiconductor field-effect transistors (MOSFETs) depends on the voltage applied to the gate. |
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**Certain ranges of voltage allow no current to flow between the drain and the source. In this way, the MOSFET acts like an open switch. |
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**Another particular range of voltage allows current to easily flow from the source to the drain. |
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**When the voltage is in between the ranges of open and closed switch, the MOSFET can smoothly control the amount of current flowing. |
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*Bipolar Junction Transistors (BJTs) can act as either switches or current controls as well. |
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[[Image:mosfet.jpg|thumb|right|400px|MOSFET diagram <ref> [http://www.msm.cam.ac.uk/doitpoms/tlplib/semiconductors/images/mosfet.jpg University of Cambridge] </ref>]] |
[[Image:mosfet.jpg|thumb|right|400px|MOSFET diagram <ref> [http://www.msm.cam.ac.uk/doitpoms/tlplib/semiconductors/images/mosfet.jpg University of Cambridge] </ref>]] |
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==References== |
==References== |
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Revision as of 13:18, 24 January 2010
The following facts are not profound and are possibly very obvious. Nonetheless, they might help cement certain concepts. Please add things you think would be helpful.
Transistors
- Conduction in n-type material is from free electrons.
- Conduction in p-type material is from holes (positive particles).
- The function of metal-oxide-semiconductor field-effect transistors (MOSFETs) depends on the voltage applied to the gate.
- Certain ranges of voltage allow no current to flow between the drain and the source. In this way, the MOSFET acts like an open switch.
- Another particular range of voltage allows current to easily flow from the source to the drain.
- When the voltage is in between the ranges of open and closed switch, the MOSFET can smoothly control the amount of current flowing.
- Bipolar Junction Transistors (BJTs) can act as either switches or current controls as well.
MOSFET diagram <ref> University of Cambridge </ref>
References
<references/>