CN102457796A - Public broadcasting sound box capable of supporting constant voltage and constant resistor inputting at the same time - Google Patents
Public broadcasting sound box capable of supporting constant voltage and constant resistor inputting at the same time Download PDFInfo
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- CN102457796A CN102457796A CN201010524657XA CN201010524657A CN102457796A CN 102457796 A CN102457796 A CN 102457796A CN 201010524657X A CN201010524657X A CN 201010524657XA CN 201010524657 A CN201010524657 A CN 201010524657A CN 102457796 A CN102457796 A CN 102457796A
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- sound box
- public broadcasting
- constant voltage
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- input
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Abstract
The invention provides a public broadcasting sound box capable of supporting constant voltage and constant resistor inputting at the same time. The public broadcasting sound box adopts the following scheme that: on the basis of basic components for the public broadcasting sound box, two groups of wire connectors are used, wherein the basic components comprise a loudspeaker, a transformer, a box body and the wire connectors, one group of the wire connectors are connected to an input end of the loudspeaker (constant resistor inputting), and the other group of the wire connectors are connected to an input end of the transformer (constant voltage inputting). Therefore, a constant voltage signal output by a constant voltage power amplifier is connected to a constant voltage input end of the sound box, and a signal output by a constant resistor power amplifier is connected to a constant resistor input end of the sound box, namely, requirements that two different output manners can be met at the same time by one sound box can be solved.
Description
Technical field
The present invention relates to Public Address system, relate in particular to and support the local audio amplifier that amplifies of public broadcasting.
Background technology
Public broadcasting is widely used in public places such as school, square, hospital, plant area, army, airport, residential quarters, and the audio amplifier of public broadcasting all can be installed in each classroom of school, each room of office block etc.
From demands such as teaching, speeches, the independent audio enlarging function demand of address is also more and more separately.And existing solution is for need set up independently public address system separately; That is: Public Address system is established for the audio frequency enlarging function of unified front end, sets up independent audio amplifier system (being equipped with independent power amplifier and audio amplifier) in the place that needs independent audio to amplify.
Such allocation plan need be installed two and overlap independently audio amplifier; Because the audio power of public broadcasting is output as level pressure output; The local audio power that amplifies is output as decides resistance output (under most of situation), and two cover audio signals can not be exported on same audio amplifier the same time.
Therefore, if can provide one can satisfy level pressure and the fixed audio amplifier that hinders input simultaneously, this type of demand can satisfied.
Summary of the invention
In sum, the invention provides a kind of public broadcasting audio amplifier that can support simultaneously that level pressure and fixed resistance are imported.
For realizing above-mentioned purpose; The present invention adopts following scheme: at the element of public broadcasting audio amplifier: on the basis of loud speaker, transformer, casing, electric wire connecting junction; Use two set of connections devices, a winding loud speaker input (fixed resistance input), a winding transformer input (level pressure input).The level pressure signal of level pressure power amplifier output connects the level pressure input of this audio amplifier like this, and what the signal that hinders power amplifier output surely connect this audio amplifier decides the resistance input, can solve the demand that an audio amplifier can satisfy two kinds of different way of outputs simultaneously.
Description of drawings
Accompanying drawing is a kind of back view that can support the public broadcasting audio amplifier that level pressure and fixed resistance are imported simultaneously of the present invention.
Embodiment
With reference to accompanying drawing; The present invention is a kind of can to support level pressure and the fixed element that hinders the public broadcasting audio amplifier of input at the public broadcasting audio amplifier simultaneously: on the basis of loud speaker, transformer, casing, electric wire connecting junction; Increase and use a set of connections device; One winding loud speaker input (fixed resistance input), a winding transformer input (level pressure input).The level pressure signal of level pressure power amplifier output connects the level pressure input of this audio amplifier like this, and what the signal that hinders power amplifier output surely connect this audio amplifier decides the resistance input, can solve the demand that an audio amplifier can satisfy two kinds of different way of outputs simultaneously.This can be various standards or nonstandard connector, perhaps is lead.
Claims (2)
1. can support the public broadcasting audio amplifier that level pressure and fixed resistance are imported simultaneously; Comprise one or above loud speaker, transformer, casing, electric wire connecting junction composition; It is characterized by: describedly can support simultaneously that the level pressure and the electric wire connecting junction of the public broadcasting audio amplifier of fixed resistance input are two groups; One winding loud speaker input (fixed resistance input), a winding transformer input (level pressure input).
2. based on the described electric wire connecting junction that can support the public broadcasting audio amplifier that level pressure and fixed resistance are imported simultaneously of claim 1, it is characterized by: described electric wire connecting junction can be various standards or nonstandard connector, perhaps is lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010524657XA CN102457796A (en) | 2010-10-29 | 2010-10-29 | Public broadcasting sound box capable of supporting constant voltage and constant resistor inputting at the same time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010524657XA CN102457796A (en) | 2010-10-29 | 2010-10-29 | Public broadcasting sound box capable of supporting constant voltage and constant resistor inputting at the same time |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102457796A true CN102457796A (en) | 2012-05-16 |
Family
ID=46040364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010524657XA Pending CN102457796A (en) | 2010-10-29 | 2010-10-29 | Public broadcasting sound box capable of supporting constant voltage and constant resistor inputting at the same time |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102457796A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108243365A (en) * | 2018-01-08 | 2018-07-03 | 江苏中协智能科技有限公司 | A kind of level pressure hinders speaker universal power amplifier surely |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2583911Y (en) * | 2002-06-26 | 2003-10-29 | 陈基生 | Sound weir type suond column |
| CN2882166Y (en) * | 2005-08-19 | 2007-03-21 | 厦门市同安鹭源电子配件有限公司 | Connection device between audio transformer and loudspeaker |
-
2010
- 2010-10-29 CN CN201010524657XA patent/CN102457796A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2583911Y (en) * | 2002-06-26 | 2003-10-29 | 陈基生 | Sound weir type suond column |
| CN2882166Y (en) * | 2005-08-19 | 2007-03-21 | 厦门市同安鹭源电子配件有限公司 | Connection device between audio transformer and loudspeaker |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108243365A (en) * | 2018-01-08 | 2018-07-03 | 江苏中协智能科技有限公司 | A kind of level pressure hinders speaker universal power amplifier surely |
| CN108243365B (en) * | 2018-01-08 | 2019-01-22 | 江苏中协智能科技有限公司 | A kind of level pressure hinders speaker universal power amplifier surely |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| DD01 | Delivery of document by public notice |
Addressee: Yang Lin Document name: Notification that Application Deemed to be Withdrawn |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120516 |