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Definition of "Variable Capacitor" |
An adjustable Capacitor. In this example the dielectric is air, other dielectrics are possible and additional package styles. Also refer to the section on Capacitor Definitions. Also refer to the term Varactor. / A variable capacitor is a capacitor whose capacitance may be intentionally and repeatedly changed mechanically or electronically. Variable capacitors are often used in L/C circuits to set the resonance frequency, example to tune a radio,therefore it is sometimes called a tuning capacitor or tuning condenser, or as a variable reactance, example for impedance matching in antenna tuners. / A-Law is the standard codec compression/decompression algorithm for pulse code modulation from the ITU-T the Telecommunication Standardization Sector of the International telecommunication Union. A-Law is the type of PCM used in most of the world. The other type, mu-Law, is used in the United States and Japan. / capacitor whose capacitance can be change by varying the effective area of the plates or the distance between the plates. |
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