GB1080118A - Improvements in or relating to low-frequency amplifier circuits - Google Patents

Improvements in or relating to low-frequency amplifier circuits

Info

Publication number
GB1080118A
GB1080118A GB4884565A GB4884565A GB1080118A GB 1080118 A GB1080118 A GB 1080118A GB 4884565 A GB4884565 A GB 4884565A GB 4884565 A GB4884565 A GB 4884565A GB 1080118 A GB1080118 A GB 1080118A
Authority
GB
United Kingdom
Prior art keywords
signal
amplifier
output
modulator
amplifier circuits
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4884565A
Other languages
English (en)
Inventor
Brian Ernest Attwood
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Components Ltd
Original Assignee
Mullard Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB11192/65A external-priority patent/GB1077362A/en
Application filed by Mullard Ltd filed Critical Mullard Ltd
Priority to GB4884565A priority Critical patent/GB1080118A/en
Priority to US582630A priority patent/US3493685A/en
Priority to DE19661541517 priority patent/DE1541517A1/de
Priority to AT1049466A priority patent/AT278977B/de
Priority to NL6616049A priority patent/NL6616049A/xx
Priority to FR84000A priority patent/FR93356E/fr
Priority to BE689858D priority patent/BE689858A/xx
Publication of GB1080118A publication Critical patent/GB1080118A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • 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
    • H03F1/0261—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 polarisation voltage or current, e.g. gliding Class A
    • 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
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/302—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in bipolar transistor amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Amplifiers (AREA)
GB4884565A 1965-03-16 1965-11-17 Improvements in or relating to low-frequency amplifier circuits Expired GB1080118A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB4884565A GB1080118A (en) 1965-03-16 1965-11-17 Improvements in or relating to low-frequency amplifier circuits
US582630A US3493685A (en) 1965-11-17 1966-09-28 Power supply regulator and amplifier circuits
DE19661541517 DE1541517A1 (de) 1965-03-16 1966-11-12 Kombinierte Niederfrequenzsignalverstaerkungs- und stabilisierte Gleichspannungsspeiseschaltung
AT1049466A AT278977B (de) 1965-11-17 1966-11-14 Schaltungsanordnung mit einer Gleichspannungsstabilisierschaltung
NL6616049A NL6616049A (xx) 1965-03-16 1966-11-15
FR84000A FR93356E (fr) 1965-03-16 1966-11-17 Combinaison d'un amplificateur basse fréquence et d'un circuit d'alimentation en tension continue stabilisée.
BE689858D BE689858A (xx) 1965-03-16 1966-11-17

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB11192/65A GB1077362A (en) 1965-03-16 1965-03-16 Improvements in or relating to low frequency amplifier circuits
GB4884565A GB1080118A (en) 1965-03-16 1965-11-17 Improvements in or relating to low-frequency amplifier circuits

Publications (1)

Publication Number Publication Date
GB1080118A true GB1080118A (en) 1967-08-23

Family

ID=26248125

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4884565A Expired GB1080118A (en) 1965-03-16 1965-11-17 Improvements in or relating to low-frequency amplifier circuits

Country Status (5)

Country Link
BE (1) BE689858A (xx)
DE (1) DE1541517A1 (xx)
FR (1) FR93356E (xx)
GB (1) GB1080118A (xx)
NL (1) NL6616049A (xx)

Also Published As

Publication number Publication date
DE1541517A1 (de) 1969-08-07
BE689858A (xx) 1967-05-17
NL6616049A (xx) 1967-05-18
FR93356E (fr) 1969-03-21

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