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About: Variable-gain amplifier     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:WikicatElectronicAmplifiers, within Data Space : dbpedia.org associated with source document(s)

Type: companyyago:WikicatAmplifiersyago:Amplifier102705944yago:Artifact100021939yago:ElectronicEquipment103278248yago:Equipment103294048yago:Instrumentality103575240yago:Object100002684yago:PhysicalEntity100001930yago:Whole100003553yago:WikicatElectronicAmplifiers New Facet based on Instances of this Class

A variable-gain (VGA) or voltage-controlled amplifier (VCA) is an electronic amplifier that varies its gain depending on a control voltage (often abbreviated CV). VCAs have many applications, including audio level compression, synthesizers and amplitude modulation. Another type of circuit uses operational transconductance amplifiers. In audio applications logarithmic gain control is used to emulate how the ear hears loudness. David E. Blackmer's dbx 202 VCA, based on the Blackmer gain cell, was among the first successful implementations of a logarithmic VCA.