Difference between revisions of "Diode"
(Created page with "==Key Stage 4== ===Meaning=== right|300px|thumb|The symbol for a '''diode'''. A '''diode''' is an electrical component which...") |
|||
| Line 7: | Line 7: | ||
: [[Diode]]s have a low [[Electrical Resistance|resistance]] in one direction but a very high [[Electrical Resistance|resistance]] in the reverse direction. | : [[Diode]]s have a low [[Electrical Resistance|resistance]] in one direction but a very high [[Electrical Resistance|resistance]] in the reverse direction. | ||
: [[Diode]]s can be used to change an [[Alternating Current|alternating current]] into a [[Direct Current|direct current]]. | : [[Diode]]s can be used to change an [[Alternating Current|alternating current]] into a [[Direct Current|direct current]]. | ||
| + | |||
| + | {| class="wikitable" | ||
| + | |[[File:IVGraphDiode.png|center|400px]] | ||
| + | |} | ||
| + | |||
| + | ====Description==== | ||
| + | The '''IV graph''' for a [[diode]] shows that: | ||
| + | *For a positive [[Potential Difference|potential difference]] the [[Electrical Current|current]] increases rapidly with an increase in [[Potential Difference|potential difference]] | ||
| + | *For a negative [[Potential Difference|potential difference]] the [[Electrical Current|current]] remains negligible and does not increase as the [[Potential Difference|potential difference]] becomes larger. | ||
Revision as of 14:55, 28 February 2019
Key Stage 4
Meaning
A diode is an electrical component which only allows electricity through in one direction.
About Diodes
- Diodes have a low resistance in one direction but a very high resistance in the reverse direction.
- Diodes can be used to change an alternating current into a direct current.
 |
Description
The IV graph for a diode shows that:
- For a positive potential difference the current increases rapidly with an increase in potential difference
- For a negative potential difference the current remains negligible and does not increase as the potential difference becomes larger.