Patent classifications
H
ELECTRICITY
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H03
ELECTRONIC CIRCUITRY
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H03F
AMPLIFIERS
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2203/00
Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
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H03F2203/45
Indexing scheme relating to differential amplifiers
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H03F2203/45208
the dif amp being of the long tail pair type, one current source being coupled to the common emitter of the amplifying transistors
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