WO1998035460A1 - Dispositif de blindage et equipements electroacoustiques pourvus de ce dispositif - Google Patents
Dispositif de blindage et equipements electroacoustiques pourvus de ce dispositif Download PDFInfo
- Publication number
- WO1998035460A1 WO1998035460A1 PCT/FR1998/000217 FR9800217W WO9835460A1 WO 1998035460 A1 WO1998035460 A1 WO 1998035460A1 FR 9800217 W FR9800217 W FR 9800217W WO 9835460 A1 WO9835460 A1 WO 9835460A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shielding
- general
- shield
- filter
- separate
- Prior art date
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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
Definitions
- the present invention relates to a device for shielding electronic circuits used to process or amplify audio signals. It applies in the field of electroacoustics and also relates to electroacoustic equipment provided with this shielding device.
- the two sector phases 1, 2 are connected, within the mains filter 11, to the power inputs of the electroacoustic equipment 12 via respectively two inductors 14, 16 and by a capacitor 15 connected at the output of these inductors 14, 16.
- Such a device makes it possible to attenuate strongly the high frequency signals present between the mains phases and the external earth or the shielding of the circuits.
- the shielding is partitioned into several compartments which make it possible to isolate between them the different parts of the electronic circuits. This arrangement, mainly intended to avoid parasitic interactions between these different parts of the electronic circuits, can further contribute to reducing the disturbances induced by external parasitic signals.
- the respectively general and particular shielding means are respectively connected to each other by filtering means . It can be either internal shields completely surrounding the transformers concerned, as partial shields or shields surrounding the electronic circuits processing the signals, or even simple screens separating the transformers from the electronic circuits.
- an electroacoustic equipment comprising a general shielding arranged around the electronic circuits and at least one power transformer, characterized in that it is provided with a shielding device according to the invention.
- Shielding device (30, 40, 50) according to claim 1, in which the internal electromagnetic isolation means comprise particular internal shielding means (32, 42, 532, 542) located around the power transformer (s) (33; 43, 44; 53, 54), characterized in that the respectively general and particular shielding means (10; 32, 42, 532, 542) are connected to each other respectively by filtering means (13, 47, 58, 56).
- the internal electromagnetic isolation means comprise particular internal shielding means (32, 42, 532, 542) located around the power transformer (s) (33; 43, 44; 53, 54), characterized in that the respectively general and particular shielding means (10; 32, 42, 532, 542) are connected to each other respectively by filtering means (13, 47, 58, 56).
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Filters And Equalizers (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98906982A EP0958669A1 (fr) | 1997-02-05 | 1998-02-05 | Dispositif de blindage et equipements electroacoustiques pourvus de ce dispositif |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR97/01263 | 1997-02-05 | ||
FR9701263A FR2759244B1 (fr) | 1997-02-05 | 1997-02-05 | Dispositif de blindage et equipements electroacoustiques pourvus de ce dispositif |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998035460A1 true WO1998035460A1 (fr) | 1998-08-13 |
Family
ID=9503325
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1998/000217 WO1998035460A1 (fr) | 1997-02-05 | 1998-02-05 | Dispositif de blindage et equipements electroacoustiques pourvus de ce dispositif |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0958669A1 (fr) |
FR (1) | FR2759244B1 (fr) |
WO (1) | WO1998035460A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2878119A1 (fr) * | 2004-11-15 | 2006-05-19 | Thierry Rolland | Plateforme audio modulable |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4320307A (en) * | 1979-09-17 | 1982-03-16 | Siemens Aktiengesellschaft | Arrangement for interference suppression of electromagnetic circuits |
FR2501931A1 (fr) * | 1981-03-11 | 1982-09-17 | Cables De Lyon Geoffroy Delore | Dispositif de protection contre les impulsions electromagnetiques a front raide |
-
1997
- 1997-02-05 FR FR9701263A patent/FR2759244B1/fr not_active Expired - Lifetime
-
1998
- 1998-02-05 EP EP98906982A patent/EP0958669A1/fr not_active Ceased
- 1998-02-05 WO PCT/FR1998/000217 patent/WO1998035460A1/fr not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4320307A (en) * | 1979-09-17 | 1982-03-16 | Siemens Aktiengesellschaft | Arrangement for interference suppression of electromagnetic circuits |
FR2501931A1 (fr) * | 1981-03-11 | 1982-09-17 | Cables De Lyon Geoffroy Delore | Dispositif de protection contre les impulsions electromagnetiques a front raide |
Also Published As
Publication number | Publication date |
---|---|
FR2759244A1 (fr) | 1998-08-07 |
EP0958669A1 (fr) | 1999-11-24 |
FR2759244B1 (fr) | 1999-04-30 |
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