Classifications

• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03F—AMPLIFIERS
  • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
  • H03F3/45—Differential amplifiers
  • H03F3/45071—Differential amplifiers with semiconductor devices only
  • H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
  • H03F3/4508—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using bipolar transistors as the active amplifying circuit
  • H03F3/45085—Long tailed pairs
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03G—CONTROL OF AMPLIFICATION
  • H03G11/00—Limiting amplitude; Limiting rate of change of amplitude
  • H03G11/002—Limiting amplitude; Limiting rate of change of amplitude without controlling loop
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03G—CONTROL OF AMPLIFICATION
  • H03G3/00—Gain control in amplifiers or frequency changers
  • H03G3/20—Automatic control
  • H03G3/30—Automatic control in amplifiers having semiconductor devices
  • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M1/00—Substation equipment, e.g. for use by subscribers
  • H04M1/738—Interface circuits for coupling substations to external telephone lines
  • H04M1/76—Compensating for differences in line impedance
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B7/00—Special arrangements or measures in connection with doors or windows
  • E06B7/02—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses
  • E06B2007/026—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses with air flow between panes
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03F—AMPLIFIERS
  • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
  • H03F2203/45—Indexing scheme relating to differential amplifiers
  • H03F2203/45362—Indexing scheme relating to differential amplifiers the AAC comprising multiple transistors parallel coupled at their gates and drains only, e.g. in a cascode dif amp, only those forming the composite common source transistor

Landscapes

• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Signal Processing (AREA)
• Multimedia (AREA)
• Amplifiers (AREA)
• Interface Circuits In Exchanges (AREA)

Applications Claiming Priority (1)

Publications (2)

Family

ID=10527414

Family Applications (1)

Country Status (7)

Families Citing this family (5)

Family Cites Families (9)

• 1982
  • 1982-03-04 JP JP57500817A patent/JPS59500344A/ja active Pending
  • 1982-03-04 EP EP82900646A patent/EP0102946B1/en not_active Expired
  • 1982-03-04 US US06/491,688 patent/US4502018A/en not_active Expired - Fee Related
  • 1982-03-04 DE DE8282900646T patent/DE3277492D1/de not_active Expired
  • 1982-03-04 WO PCT/GB1982/000070 patent/WO1983003177A1/en not_active Ceased
• 1983
  • 1983-02-24 NZ NZ203388A patent/NZ203388A/en unknown
  • 1983-11-03 DK DK503183A patent/DK503183D0/da not_active Application Discontinuation

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