Key Facts from Reading: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
|||
| Line 1: | Line 1: | ||
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. | ||
==Transistors== | ==Transistors== | ||
*Conduction in n-type material is from free electrons | *Conduction in n-type material is from free electrons. | ||
*Conduction in p-type material is from holes (positive particles) | *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. | |||
[[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>]] | ||
==References== | ==References== | ||
<references/> | <references/> | ||
Revision as of 14:18, 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.
References
<references/>