Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
  • H04B1/06—Receivers
  • H04B1/16—Circuits
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03F—AMPLIFIERS
  • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
  • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
  • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
  • H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
  • H03F1/0244—Stepped control
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03F—AMPLIFIERS
  • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
  • H03F3/181—Low frequency amplifiers, e.g. audio preamplifiers
  • H03F3/183—Low frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only

Applications Claiming Priority (2)

Publications (1)

Family

ID=26192391

Family Applications (1)

Country Status (6)

• 0
  • BE BE622641D patent/BE622641A/xx unknown
• 1961
  • 1961-09-21 FR FR873856A patent/FR1308034A/en not_active Expired
• 1962
  • 1962-08-16 FR FR907045A patent/FR82171E/en not_active Expired
  • 1962-09-18 CH CH1102562A patent/CH396101A/en unknown
  • 1962-09-18 GB GB35490/62A patent/GB949748A/en not_active Expired
  • 1962-09-18 DE DEN22124A patent/DE1158118B/en active Pending
• 1964
  • 1964-12-12 OA OA50830A patent/OA048E/xx unknown
  • 1964-12-30 OA OA51143A patent/OA01044A/en unknown

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