FR38851E - Improvements to amplifier systems - Google Patents

Improvements to amplifier systems

Info

Publication number
FR38851E
FR38851E FR38851DA FR38851E FR 38851 E FR38851 E FR 38851E FR 38851D A FR38851D A FR 38851DA FR 38851 E FR38851 E FR 38851E
Authority
FR
France
Prior art keywords
amplifier systems
amplifier
systems
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
Other languages
French (fr)
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 US12977A external-priority patent/US1728879A/en
Priority claimed from US69200A external-priority patent/US1640436A/en
Priority claimed from US69201A external-priority patent/US1778058A/en
Priority claimed from US88161A external-priority patent/US1774467A/en
Priority claimed from US108941A external-priority patent/US1665883A/en
Priority claimed from GB2067926A external-priority patent/GB279202A/en
Priority claimed from US195793A external-priority patent/US1701374A/en
Priority claimed from US195792A external-priority patent/US1833750A/en
Priority claimed from GB2741627A external-priority patent/GB304167A/en
Priority claimed from US271813A external-priority patent/US1906615A/en
Priority claimed from US276742A external-priority patent/US1833762A/en
Priority claimed from US303207A external-priority patent/US1756860A/en
Priority claimed from US308478A external-priority patent/US1814817A/en
Application filed by Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Publication of FR38851E publication Critical patent/FR38851E/en
Application granted granted Critical
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
    • G05F1/52—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using discharge tubes in series with the load as final control devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
FR38851D 1925-03-03 1929-10-04 Improvements to amplifier systems Expired FR38851E (en)

Applications Claiming Priority (19)

Application Number Priority Date Filing Date Title
US12977A US1728879A (en) 1925-03-03 1925-03-03 Amplifying system
US69201A US1778058A (en) 1925-11-14 1925-11-14 Amplifying system
US69200A US1640436A (en) 1925-11-14 1925-11-14 Amplifying system
US88161A US1774467A (en) 1926-02-13 1926-02-13 Power-supply system
US108941A US1665883A (en) 1926-05-13 1926-05-13 Power-amplifying system
GB2067926A GB279202A (en) 1926-08-21 1926-08-21 Improvements relating to thermionic valve amplifier circuits
US195793A US1701374A (en) 1927-06-01 1927-06-01 Electrical apparatus
US195792A US1833750A (en) 1927-06-01 1927-06-01 Electrical apparatus
US35771XA 1927-07-22 1927-07-22
GB2741627A GB304167A (en) 1927-10-15 1927-10-15 Improvements in arrangements for supplying current for the operation of thermionic valve systems
FR34843T 1927-12-31
US37327XA 1928-02-11 1928-02-11
GB502528 1928-02-17
US271813A US1906615A (en) 1928-04-21 1928-04-21 Electric pick-up
US276742A US1833762A (en) 1928-05-10 1928-05-10 Sound amplifier and reproducing apparatus
GB37832X 1928-06-11
US303207A US1756860A (en) 1928-08-31 1928-08-31 Apparatus for producing sound
US308478A US1814817A (en) 1928-09-26 1928-09-26 Protective means for sound reproducers
US31034128A 1928-10-04 1928-10-04

Publications (1)

Publication Number Publication Date
FR38851E true FR38851E (en) 1931-08-07

Family

ID=27586234

Family Applications (1)

Application Number Title Priority Date Filing Date
FR38851D Expired FR38851E (en) 1925-03-03 1929-10-04 Improvements to amplifier systems

Country Status (1)

Country Link
FR (1) FR38851E (en)

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