JPS5482228A - Converter - Google Patents

Converter

Info

Publication number
JPS5482228A
JPS5482228A JP15079577A JP15079577A JPS5482228A JP S5482228 A JPS5482228 A JP S5482228A JP 15079577 A JP15079577 A JP 15079577A JP 15079577 A JP15079577 A JP 15079577A JP S5482228 A JPS5482228 A JP S5482228A
Authority
JP
Japan
Prior art keywords
coil
negating
converter
occuring
magnetism
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.)
Pending
Application number
JP15079577A
Other languages
Japanese (ja)
Inventor
Tatsuo Fukuyama
Yoshiaki Harada
Shinichiro Ishii
Koshin Shimada
Kenichi Takahashi
Takafumi Ueno
Original Assignee
Matsushita Electric Ind Co 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
Application filed by Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Priority to JP15079577A priority Critical patent/JPS5482228A/en
Publication of JPS5482228A publication Critical patent/JPS5482228A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02Details
    • H04R9/025Magnetic circuit

Abstract

PURPOSE:To considerably reduce the distortions occuring in the driving part of the converter by negating the inductances of a voice coil with the negating coil wound in the recess provided at least in one of center pole and plate. CONSTITUTION:Negating coil 8 provided in the recess 1a of a center pole 1 is constituted of conductors having magnetism and is driven by a common preamplifier together with a voice coil 3. In this case, the coils 8 and 3 are so connected to the preamplifier that the magnetic fluxes generated when currents are flow respectively thereto are mutually negated with each other. Thereby, the inductance of the coil 3 is approximately perfectly negated by the coil 8 and the distorsions occuring in the driving part of the converter may be considerably reduced. The performance of the speaker is also enhanced because the spacing between the pole 1 and plate 2 is small and the coil 8 is prevented from decreasing in the gap magnetic flux density by magnetism.
JP15079577A 1977-12-14 1977-12-14 Converter Pending JPS5482228A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15079577A JPS5482228A (en) 1977-12-14 1977-12-14 Converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15079577A JPS5482228A (en) 1977-12-14 1977-12-14 Converter

Publications (1)

Publication Number Publication Date
JPS5482228A true JPS5482228A (en) 1979-06-30

Family

ID=15504591

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15079577A Pending JPS5482228A (en) 1977-12-14 1977-12-14 Converter

Country Status (1)

Country Link
JP (1) JPS5482228A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981002501A1 (en) * 1980-02-26 1981-09-03 K Sakai Magnetic circuit for an electro-mechanical transducer of a dynamic electricity-type
JPH0235600U (en) * 1988-08-26 1990-03-07
JPH07123494A (en) * 1993-04-21 1995-05-12 Samsung Electro Mech Co Ltd Speaker
JP2006527933A (en) * 2003-06-18 2006-12-07 余姚温度メーター工場有限責任公司 Low inductance electromagnetic driver with non-excited magnetic circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4940724A (en) * 1972-08-22 1974-04-16
JPS5130784A (en) * 1974-09-09 1976-03-16 Horiba Ltd

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4940724A (en) * 1972-08-22 1974-04-16
JPS5130784A (en) * 1974-09-09 1976-03-16 Horiba Ltd

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981002501A1 (en) * 1980-02-26 1981-09-03 K Sakai Magnetic circuit for an electro-mechanical transducer of a dynamic electricity-type
JPH0235600U (en) * 1988-08-26 1990-03-07
JPH07123494A (en) * 1993-04-21 1995-05-12 Samsung Electro Mech Co Ltd Speaker
JP2006527933A (en) * 2003-06-18 2006-12-07 余姚温度メーター工場有限責任公司 Low inductance electromagnetic driver with non-excited magnetic circuit

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