FR1054078A - Permanent magnet with high air gap induction, especially for dynamic loudspeakers and microphones - Google Patents

Permanent magnet with high air gap induction, especially for dynamic loudspeakers and microphones

Info

Publication number
FR1054078A
FR1054078A FR1054078DA FR1054078A FR 1054078 A FR1054078 A FR 1054078A FR 1054078D A FR1054078D A FR 1054078DA FR 1054078 A FR1054078 A FR 1054078A
Authority
FR
France
Prior art keywords
microphones
permanent magnet
air gap
high air
gap induction
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.)
Gebrueder Boehler and Co AG
Original Assignee
Gebrueder Boehler and Co AG
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
Application filed by Gebrueder Boehler and Co AG filed Critical Gebrueder Boehler and Co AG
Application granted granted Critical
Publication of FR1054078A publication Critical patent/FR1054078A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
FR1054078D 1951-06-23 1951-11-03 Permanent magnet with high air gap induction, especially for dynamic loudspeakers and microphones Expired FR1054078A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB15530A DE913564C (en) 1951-06-23 1951-06-23 Permanent magnet system with high air gap induction, especially for electrodynamic telephones and loudspeakers

Publications (1)

Publication Number Publication Date
FR1054078A true FR1054078A (en) 1954-02-08

Family

ID=6958472

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1054078D Expired FR1054078A (en) 1951-06-23 1951-11-03 Permanent magnet with high air gap induction, especially for dynamic loudspeakers and microphones

Country Status (2)

Country Link
DE (1) DE913564C (en)
FR (1) FR1054078A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2504299A1 (en) * 1981-04-15 1982-10-22 Telephonie Ind Commerciale Electromagnet transducer capsule adjustment instrument for telephone - uses artificial ear to receive acoustic signal from transducer in magnetic field from solenoid

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1226646B (en) * 1960-11-04 1966-10-13 Dragoljub B Stojanovic Double magnet system for permanently dynamic loudspeakers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2504299A1 (en) * 1981-04-15 1982-10-22 Telephonie Ind Commerciale Electromagnet transducer capsule adjustment instrument for telephone - uses artificial ear to receive acoustic signal from transducer in magnetic field from solenoid

Also Published As

Publication number Publication date
DE913564C (en) 1954-06-14

Similar Documents

Publication Publication Date Title
FR1054078A (en) Permanent magnet with high air gap induction, especially for dynamic loudspeakers and microphones
FR1019894A (en) Permanent magnet for speaker
FR940214A (en) Reading and hearing box
GB560219A (en) Improvements in moving coil loud-speakers and microphones and like electro-acoustic apparatus
BE531694A (en) COMBINATION OF LOUDSPEAKERS CONSISTING OF ONE LOUDSPEAKER FOR LOW NOTES AND MULTIPLE LOUDSPEAKERS FOR HIGH NOTES.
FR1071552A (en) Headset, especially for telephone headset
FR1086050A (en) Advanced electrodynamic speaker
ES195079A3 (en) IMPROVEMENTS IN THE MANUFACTURE OF ELECTRODYNAMIC AND PERMANENT MAGNET SPEAKERS.
FR1112678A (en) Permanent magnet magnetic separator
AT171357B (en) Permanent magnet system with high air gap induction, especially for electrodynamic telephones and loudspeakers
FR1047607A (en) Advanced permanent magnet sorter
FR1114371A (en) Speaker combination including one bass speaker and multiple high note speakers
CA497231A (en) Permanent magnet assembly for electrodynamic loudspeaker
FR1067128A (en) Amplifier for the deaf
CA469388A (en) Moving coil loudspeakers and microphones
FR1077101A (en) Improvement in projection screens, particularly for cinematography and television
FR1051783A (en) Magnetic circuit especially for loudspeakers
FR946135A (en) Improvement in the excitation circuits of electrodynamic loudspeakers
FR1035489A (en) Permanent magnet alloy
FR1041277A (en) Loudspeaker assembly with loudspeakers for treble and bass
AU205061B2 (en) Permanent magnet structure for electrodynamic loudspeakers
AU152392B2 (en) Permanent magnet stucture fora loudspeaker
GR13359B (en) AUXILIARY ELECTRONIC DEVICE I REPLACED THE HEADPHONE AND MICROPHONE OF THE TELEPHONE DEVICE.
FR1114250A (en) Improvements in the manufacture of permanent magnets
FR1251911A (en) Permanent magnet device, in particular for loudspeakers and microphones