Patent classifications
H
ELECTRICITY
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H03
ELECTRONIC CIRCUITRY
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H03F
AMPLIFIERS
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1/00
Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
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H03F1/02
Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
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H03F1/0205
in transistor amplifiers
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H03F1/0211
with control of the supply voltage or current
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H03F1/0233
by using a signal derived from the output signal, e.g. bootstrapping the voltage supply
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H03F1/0238
using supply converters
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