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farad
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   Also found in: Dictionary/thesaurus, Medical, Acronyms, Encyclopedia, Wikipedia 0.01 sec.

farad

SI unit of electrical capacitance (how much electric charge a capacitor can store for a given voltage). One farad is a capacitance of one coulomb per volt. For practical purposes the microfarad (one millionth of a farad, symbol μF) is more commonly used.

The farad is named after English scientist Michael Faraday, and replaced the now obsolete unit the jar (so called because it represented the charge stored in a Leiden jar, the earliest electrical circuit). One farad equals 9 × 108 jars.



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This provided a transmission line with a capacitance of 300 nanofarads per foot in length and a characteristic impedance of 0.
The Model 4200-CVU instrument comes as a module that plugs into any available instrument slot of the Model 4200-SCS, allowing fast and easy capacitance measurements from femtoFarads (fF) to nanoFarads (nF), at frequencies from 10kHz to 10MHz.
This data suggest that if an ultra-thin power-ground core(s) supplies at least a couple hundred nanofarads of capacitance with a very low impedance, a very large number of surface-mounted discrete decoupling capacitance can be removed.
 
 
 
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