Classifications

• • 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
  • H03F3/185—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only with field-effect devices
  • H03F3/1855—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only with field-effect devices with junction-FET devices
• • 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
  • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
• • 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
  • H03F1/56—Modifications of input or output impedances, not otherwise provided for
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03G—CONTROL OF AMPLIFICATION
  • H03G5/00—Tone control or bandwidth control in amplifiers
  • H03G5/02—Manually-operated control
  • H03G5/04—Manually-operated control in untuned amplifiers
  • H03G5/10—Manually-operated control in untuned amplifiers having semiconductor devices
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03G—CONTROL OF AMPLIFICATION
  • H03G5/00—Tone control or bandwidth control in amplifiers
  • H03G5/02—Manually-operated control
  • H03G5/04—Manually-operated control in untuned amplifiers
  • H03G5/10—Manually-operated control in untuned amplifiers having semiconductor devices
  • H03G5/12—Manually-operated control in untuned amplifiers having semiconductor devices incorporating negative feedback

Landscapes

• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Multimedia (AREA)
• Amplifiers (AREA)
• Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=24583603

Family Applications (1)

Country Status (9)

Families Citing this family (3)

• 1967
  • 1967-06-07 US US644137A patent/US3419811A/en not_active Expired - Lifetime
  • 1967-11-13 IL IL28928A patent/IL28928A/xx unknown
  • 1967-11-20 GB GB52724/67A patent/GB1165930A/en not_active Expired
  • 1967-11-22 ES ES347473A patent/ES347473A1/es not_active Expired
  • 1967-11-22 BE BE706884D patent/BE706884A/xx unknown
  • 1967-11-23 LU LU54946D patent/LU54946A1/xx unknown
  • 1967-11-28 CH CH1665867A patent/CH484558A/fr not_active IP Right Cessation
• 1968
  • 1968-01-22 DE DE19681562085 patent/DE1562085A1/de active Pending
  • 1968-01-30 NL NL6801351A patent/NL6801351A/xx unknown

Also Published As

Similar Documents