H03FLevel 3

AMPLIFIERS

**Definition:** This place covers:

**Glossary:** - Common mode rejection ratio: the common-mode rejection ratio (CMRR) indicates the ability of the amplifier to accurately cancel voltages that are common to both inputs. The common-mode rejection ratio is defined as:

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H03F 1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements

H03F 11/00Dielectric amplifiers

H03F 13/00Amplifiers using amplifying element consisting of two mechanically- or acoustically-coupled transducers, e.g. telephone-microphone amplifier

H03F 15/00Amplifiers using galvano-magnetic effects not involving mechanical movement, e.g. using Hall effect

H03F 17/00Amplifiers using electroluminescent element or photocell

H03F 19/00Amplifiers using superconductivity effects

H03F 2200/00Indexing scheme relating to amplifiers

H03F 2201/00Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by

H03F 2203/00Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by

H03F 3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements

H03F 5/00Amplifiers with both discharge tubes and semiconductor devices as amplifying elements

H03F 7/00Parametric amplifiers

H03F 9/00Magnetic amplifiers

H03F 99/00Subject matter not provided for in other groups of this subclass

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