GB939983A - Improvements in or relating to electro-magnetic transducers - Google Patents
Improvements in or relating to electro-magnetic transducersInfo
- Publication number
- GB939983A GB939983A GB519759A GB519759A GB939983A GB 939983 A GB939983 A GB 939983A GB 519759 A GB519759 A GB 519759A GB 519759 A GB519759 A GB 519759A GB 939983 A GB939983 A GB 939983A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil assembly
- feb
- coils
- pick
- stylus arm
- 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
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
- H04R9/12—Gramophone pick-ups using a stylus; Recorders using a stylus
- H04R9/16—Gramophone pick-ups using a stylus; Recorders using a stylus signals recorded or played back by vibration of a stylus in two orthogonal directions simultaneously
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
939,983. Gramophone pick-ups and recorders. ELECTRIC & MUSICAL INDUSTRIES Ltd. Feb. 2, 1960 [Feb. 14, 1959], No. 5197/59. Class 40 (4). An electromagnetic transducer such as a stereophonic disc cutter or pick-up comprises a coil assembly including a pair of coils 8, 9, preferably of D-shape, having portions 10, 11 disposed in a magnetic gap 6 in a plane perpendicular to the polar axis 7 of the gap, the portion 10 being angularly displaced with respect to the portion 11, the coil assembly being mounted for movement in any direction in the plane. The coils may be formed by printed circuitry and are insulated from one another, being held between two supporting discs 12, 13. The polepieces 4, 5 are fed from a permanent magnet 1 by soft iron limbs 2, 3. The coil assembly is rigidly secured to a stylus arm 17 passing through apertures 16. End 19 of the stylus arm is mounted in an elastic sleeve 20 mounted in a bore in the limb 3.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB519759A GB939983A (en) | 1959-02-14 | 1959-02-14 | Improvements in or relating to electro-magnetic transducers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB519759A GB939983A (en) | 1959-02-14 | 1959-02-14 | Improvements in or relating to electro-magnetic transducers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB939983A true GB939983A (en) | 1963-10-16 |
Family
ID=9791544
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB519759A Expired GB939983A (en) | 1959-02-14 | 1959-02-14 | Improvements in or relating to electro-magnetic transducers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB939983A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2830801A1 (en) * | 1977-07-13 | 1979-01-18 | Victor Company Of Japan | STEREO CARTRIDGES OF THE VOICE COIL TYPE |
US4209670A (en) * | 1977-10-24 | 1980-06-24 | Victor Company Of Japan, Limited | Moving-coil type pickup cartridge |
US4246446A (en) * | 1977-12-23 | 1981-01-20 | Pioneer Electronic Corporation | Moving coil pick-up with coils printed on opposite sides of waver |
US4251695A (en) * | 1977-10-24 | 1981-02-17 | Victor Company Of Japan Ltd. | Pickup cartridge having means for producing magnetic fields of opposite directions for coil plate |
WO2010037822A1 (en) * | 2008-10-01 | 2010-04-08 | Ortofon A/S | Magnetic assembly suitable for audio cartridges |
-
1959
- 1959-02-14 GB GB519759A patent/GB939983A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2830801A1 (en) * | 1977-07-13 | 1979-01-18 | Victor Company Of Japan | STEREO CARTRIDGES OF THE VOICE COIL TYPE |
US4374433A (en) * | 1977-07-13 | 1983-02-15 | Victor Company Of Japan, Ltd. | Stereo pickup with printed circuit coils mounted in a linear field |
US4209670A (en) * | 1977-10-24 | 1980-06-24 | Victor Company Of Japan, Limited | Moving-coil type pickup cartridge |
US4251695A (en) * | 1977-10-24 | 1981-02-17 | Victor Company Of Japan Ltd. | Pickup cartridge having means for producing magnetic fields of opposite directions for coil plate |
US4246446A (en) * | 1977-12-23 | 1981-01-20 | Pioneer Electronic Corporation | Moving coil pick-up with coils printed on opposite sides of waver |
WO2010037822A1 (en) * | 2008-10-01 | 2010-04-08 | Ortofon A/S | Magnetic assembly suitable for audio cartridges |
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