capacitor
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capacitor [2016/06/07 11:39] – [Introduction] psykhaze | capacitor [2016/06/15 12:29] (current) – [Introduction] psykhaze | ||
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====== Capacitor ====== | ====== Capacitor ====== | ||
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When a voltage is applied across the plates, the electric field in the dielectric displaces electric charges, and subsequently stores the energy involved. It is assumed ideally that there are no free charges in the dielectric, and that while they are displaced, they are not free or enabled to move around as in a conductor or semi-conductor. | When a voltage is applied across the plates, the electric field in the dielectric displaces electric charges, and subsequently stores the energy involved. It is assumed ideally that there are no free charges in the dielectric, and that while they are displaced, they are not free or enabled to move around as in a conductor or semi-conductor. | ||
- | Dielectrics are categorized in two ways, polar and non-polar. Molecules where the center-of-gravity of the negative and positive charges are at the same point, are deemed non-polar. If that criteria is not met, the molecule is termed polar. H2O, water in molecular form, for example is polar, but H2 is non-polar. Based on that generalization, | + | Dielectrics are categorized in two ways, polar and non-polar. Molecules where the center-of-gravity of the negative and positive charges are at the same point, are deemed non-polar. If that criteria is not met, the molecule is termed polar. H2O, water in molecular form, for example is polar, but H2 is non-polar. Based on that generalization, |
The plates may be actual metal plates of various shapes but are most often in the form of metal foil or a metal film deposited (layered) on the insulating material. Since the first capacitor was invented, the Leyden jar, almost every conceivable dielectric material and form has been tried by someone: | The plates may be actual metal plates of various shapes but are most often in the form of metal foil or a metal film deposited (layered) on the insulating material. Since the first capacitor was invented, the Leyden jar, almost every conceivable dielectric material and form has been tried by someone: | ||
- | Wax, electrochemical films, plastics, ceramics, glass, oils, paper, minerals, air, and many others, either alone or as a unitized combination such as paper/wax, paper/ | + | Wax, electrochemical films, plastics, ceramics, glass, oils, paper, minerals, air, and many others, either alone or as a unitized combination such as paper/wax, paper/ |
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+ | <wrap tip> [[parts_faq# | ||
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+ | ===== Capacitor specifications ===== | ||
- | ===== MIDIBox related ===== | + | * Capacitance |
+ | * Voltage rating | ||
+ | * Polarity | ||
+ | * Type : Ceramic, Electrolytic, |
capacitor.1465299552.txt.gz · Last modified: 2016/06/07 11:39 by psykhaze