CN201718029U - Multi-channel audio signal distributor - Google Patents
Multi-channel audio signal distributor Download PDFInfo
- Publication number
- CN201718029U CN201718029U CN2010201743136U CN201020174313U CN201718029U CN 201718029 U CN201718029 U CN 201718029U CN 2010201743136 U CN2010201743136 U CN 2010201743136U CN 201020174313 U CN201020174313 U CN 201020174313U CN 201718029 U CN201718029 U CN 201718029U
- Authority
- CN
- China
- Prior art keywords
- isolating transformer
- audio output
- output port
- audio
- winding
- 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 - Fee Related
Links
Images
Abstract
The utility model discloses a multi-channel audio signal distributor which comprises a housing and a plurality of signal distribution modules arranged inside the housing, wherein each signal distribution module comprises an audio input port and a plurality of audio output ports, a control circuit is arranged between the audio input port and the plurality of audio output ports, the control circuit comprises a phase change switch and an insulating transformer, the audio input ports are connected with a primary winding of the insulating transformer through the phase change switch, and a secondary winding of the insulating transformer is connected with the audio output ports. The utility model has the advantages that due to the arrangement of the phase change switch and the insulating transformer, the interference on the external signals can be reduced and the audio signals can be purified during the transmission process.
Description
Technical field
The utility model relates to a kind of audio frequency equipment, especially relates to a kind of multipath audio signal distributor.
Background technology
In places such as large-scale stage, concert, recording, gymnasium, news conference issue, stage monitoring and momentous conference scenes, basically all can use various audio frequency apparatuses such as microphone (microphone), power amplifier, central sound mixer, monitoring sound console, housed device and loud speaker, at this moment need to use the multipath audio signal distributor signal in the microphone is transferred to various audio frequency apparatuses respectively.Existing signal distributor has only been born the task of distributing mostly, does not have other functions.Because the scene exists multiple signal to disturb, involve the radio frequency of AC power and the interference signal that induced noise is disturbed and other high-power transformers closely are coupled and produce as mobile phone signal, the noise, controllable silicon lamp dimmer, the radio that produce because of earth loop, can have influence on the quality of audio signal.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of outer signals that is subjected to and disturbs few multipath audio signal distributor.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of multipath audio signal distributor, it comprises shell, be provided with a plurality of signal distribution modules in the described shell, it is characterized in that described signal distribution module comprises an audio input port and a plurality of audio output port, be provided with control circuit between described audio input port and the described audio output port, described control circuit comprises phase change-over switch and isolating transformer, described audio input port is connected with the elementary winding of described isolating transformer by phase change-over switch, and the secondary winding of described isolating transformer is connected with audio output port.
Described audio output port has three, be respectively first audio output port, second audio output port and the 3rd audio output port, first pin of described audio input port and first pin of described first audio output port be ground connection simultaneously, first pin of described second audio output port is by ground wire change over switch ground connection, first pin of described the 3rd audio output port is by ground wire change over switch ground connection, described first audio output port is connected with described audio input port, described second audio output port is connected with first secondary winding of isolating transformer, and described the 3rd audio output port is connected with the second subprime winding of isolating transformer.
Described audio input port and audio output port all are Cannon.
The inductance value scope of the elementary winding of described isolating transformer is 31H～39H, the inductance value scope of first secondary winding of described isolating transformer is 33H～41H, the inductance value scope of the second subprime winding of described isolating transformer is 33H～41H, the resistance range of the elementary winding of described isolating transformer is 198ohm～242ohm, the resistance range of first secondary winding of described isolating transformer is 195ohm～238ohm, and the resistance range of the second subprime winding of described isolating transformer is 199ohm～243ohm.
The inductance value scope of the elementary winding of described isolating transformer is 33H～41H, the inductance value scope of first secondary winding of described isolating transformer is 35H～43H, the inductance value scope of the second subprime winding of described isolating transformer is 35H～43H, the resistance range of the elementary winding of described isolating transformer is 202ohm～248ohm, the resistance range of first secondary winding of described isolating transformer is 198ohm～242ohm, and the resistance range of the second subprime winding of described isolating transformer is 207ohm～253ohm.
Compared with prior art, advantage of the present utility model is the setting of phase change-over switch and isolating transformer, can reduce the interference of external signal, purifies the audio signal in the transmission course.The ground wire change over switch that is provided with can help to solve the noise that produces because of earth loop.
Description of drawings
Fig. 1 is a structure explosive view of the present utility model;
Fig. 2 is the structure chart of signal distribution module of the present utility model;
Fig. 3 is control circuit figure of the present utility model.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Embodiment one: a kind of multichannel microphone signal distributor, it comprises shell 1, be provided with a plurality of signal distribution modules 2 in the shell 1, signal distribution module comprises an audio input port 21 and a plurality of audio output port 22, be provided with control circuit between audio input port 21 and the audio output port 22, control circuit comprises phase change-over switch 3 and isolating transformer 4, audio input port 21 is connected with the elementary winding of isolating transformer 4 by phase change-over switch 3, and the secondary winding of isolating transformer 4 is connected with audio output port.
Audio output port 22 has three, be respectively first audio output port 221, second audio output port 222 and the 3rd audio output port 223, first pin of first pin of audio input port 21 and first audio output port 221 is ground connection simultaneously, first pin of second audio output port 222 is by ground wire change over switch ground connection, first pin of the 3rd audio output port 223 is by ground wire change over switch ground connection, first audio output port 221 is connected with audio input port 21, second audio output port 222 is connected with first secondary winding of isolating transformer 4, and the 3rd audio output port 223 is connected with the second subprime winding of isolating transformer 4.
Audio input port and audio output port all are Cannon.
The inductance value of the elementary winding of isolating transformer 4 is 31H or 35H or 39H, the inductance value of first secondary winding of isolating transformer 4 is 33H or 37H or 41H, the inductance value of the second subprime winding of isolating transformer 4 is 33H or 37H or 41H, the resistance of the elementary winding of isolating transformer 4 is 198ohm or 220ohm or 242ohm, the resistance of first secondary winding of isolating transformer 4 is 195ohm or 216ohm or 238ohm, and the resistance of the second subprime winding of isolating transformer 4 is 199ohm or 221ohm or 243ohm.
Embodiment two: a kind of multi-path line signal distributor, other parts are identical with embodiment one, its difference is that the inductance value of the elementary winding of isolating transformer 4 is 33H or 37H or 41H, the inductance value of first secondary winding of isolating transformer 4 is 35H or 39H or 43H, the inductance value of the second subprime winding of isolating transformer 4 is 35H or 39H or 43H, the resistance of the elementary winding of isolating transformer 4 is 202ohm or 225ohm or 248ohm, the resistance of first secondary winding of isolating transformer 4 is 198ohm or 220ohm or 242ohm, and the resistance of the second subprime winding of isolating transformer 4 is 207ohm or 230ohm or 253ohm.
Claims (5)
1. multipath audio signal distributor, it comprises shell, be provided with a plurality of signal distribution modules in the described shell, it is characterized in that described signal distribution module comprises an audio input port and a plurality of audio output port, be provided with control circuit between described audio input port and the described audio output port, described control circuit comprises phase change-over switch and isolating transformer, described audio input port is connected with the elementary winding of described isolating transformer by phase change-over switch, and the secondary winding of described isolating transformer is connected with audio output port.
2. a kind of multipath audio signal distributor according to claim 1, it is characterized in that described audio output port has three, be respectively first audio output port, second audio output port and the 3rd audio output port, first pin of described audio input port and first pin of described first audio output port be ground connection simultaneously, first pin of described second audio output port is by ground wire change over switch ground connection, first pin of described the 3rd audio output port is by ground wire change over switch ground connection, described first audio output port is connected with described audio input port, described second audio output port is connected with first secondary winding of isolating transformer, and described the 3rd audio output port is connected with the second subprime winding of isolating transformer.
3. a kind of multipath audio signal distributor according to claim 2 is characterized in that described audio input port and audio output port all are Cannon.
4. a kind of multipath audio signal distributor according to claim 2, the inductance value scope that it is characterized in that the elementary winding of described isolating transformer is 31H～39H, the inductance value scope of first secondary winding of described isolating transformer is 33H～41H, the inductance value scope of the second subprime winding of described isolating transformer is 33H～41H, the resistance range of the elementary winding of described isolating transformer is 198ohm～242ohm, the resistance range of first secondary winding of described isolating transformer is 195ohm～238ohm, and the resistance range of the second subprime winding of described isolating transformer is 199ohm～243ohm.
5. a kind of multipath audio signal distributor according to claim 2, the inductance value scope that it is characterized in that the elementary winding of described isolating transformer is 33H～41H, the inductance value scope of first secondary winding of described isolating transformer is 35H～43H, the inductance value scope of the second subprime winding of described isolating transformer is 35H～43H, the resistance range of the elementary winding of described isolating transformer is 202ohm～248ohm, the resistance range of first secondary winding of described isolating transformer is 198ohm～242ohm, and the resistance range of the second subprime winding of described isolating transformer is 207ohm～253ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201743136U CN201718029U (en) | 2010-04-26 | 2010-04-26 | Multi-channel audio signal distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201743136U CN201718029U (en) | 2010-04-26 | 2010-04-26 | Multi-channel audio signal distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201718029U true CN201718029U (en) | 2011-01-19 |
Family
ID=43464038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201743136U Expired - Fee Related CN201718029U (en) | 2010-04-26 | 2010-04-26 | Multi-channel audio signal distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201718029U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104918189A (en) * | 2015-06-30 | 2015-09-16 | 成都普创通信技术股份有限公司 | Microphone distributor |
-
2010
- 2010-04-26 CN CN2010201743136U patent/CN201718029U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104918189A (en) * | 2015-06-30 | 2015-09-16 | 成都普创通信技术股份有限公司 | Microphone distributor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2007142987A (en) | Receiver | |
| US10966019B2 (en) | Audio signal processing device and sound box | |
| CN205320229U (en) | Microphone | |
| Equipment | System | |
| CN106535032A (en) | Wall type embedded sound box system, a sound equipment play method and receiver play method | |
| CN202841493U (en) | Electronic frequency-halving audio signal processing circuit | |
| CN205105399U (en) | Two unification coaxial speakers and frequency dividing circuit thereof | |
| CN201718029U (en) | Multi-channel audio signal distributor | |
| US5327505A (en) | Multiple output transformers network for sound reproducing system | |
| CN205540057U (en) | One -to -many audio frequency control system based on radio transmission technology | |
| CN209882073U (en) | Exempt from to install wireless digital cinema stereo set | |
| CN105340029B (en) | For the magnetic field for correcting based on ferritic circuit | |
| CN201937549U (en) | Audio power amplification system and audio equipment | |
| CN203523011U (en) | Audio configuration device and TV audio system | |
| CN201629802U (en) | Built-in radio-frequency antenna circuit, radio-frequency transmitting antenna and television | |
| CN202871972U (en) | Composite antenna and mobile terminal | |
| CN201114776Y (en) | An audio signal converter and audio signal transmission system using this converter | |
| US9258640B2 (en) | Compact noise suppression circuit for small speakers | |
| WO2007003074A1 (en) | A wireless outdoor sound equipment | |
| CN202617332U (en) | Network digital audio transmission board and audio network system | |
| CN204362062U (en) | Multi-functional RDS meets an urgent need digital power amplifier enlarger | |
| CN104660425B (en) | OFDM power carrier addresses speaker and its control method | |
| CN203378040U (en) | High fidelity acoustic transmission sound box | |
| CN201114259Y (en) | Audio signal transmission system | |
| CN204104122U (en) | Wireless sound system and sound module applicable to same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110119 Termination date: 20130426 |