CN202004961U - Welding spot digital loudspeaker - Google Patents
Welding spot digital loudspeaker Download PDFInfo
- Publication number
- CN202004961U CN202004961U CN2009202371227U CN200920237122U CN202004961U CN 202004961 U CN202004961 U CN 202004961U CN 2009202371227 U CN2009202371227 U CN 2009202371227U CN 200920237122 U CN200920237122 U CN 200920237122U CN 202004961 U CN202004961 U CN 202004961U
- Authority
- CN
- China
- Prior art keywords
- solder joint
- pcb board
- shell
- analog
- digital converter
- 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 - Lifetime
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- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
The utility model discloses a welding spot digital loudspeaker, which comprises a casing. A sound recording port is formed at the closed end of the casing; a PCB is arranged at the open end of the casing; a sound recording capacitor consisting of a diaphragm and a back electrode plate is arranged in the casing; a preamplification circuit electrically connected with the back electrode plate and an analog-digital converter connected with the preamplification circuit are arranged on the inner side of the PCB; and a welding spot as a signal output terminal is welded on the outer side of the PCB, and is connected with the analog-digital converter. The utility model aims to provide a welding spot type digital loudspeaker which can be arranged on a terminal at random.
Description
[technical field]
The utility model relates to a kind of solder joint formula digital microphone.
[background technology]
Existing digital microphone generally is a contact pin type or SMD, the digital microphone of this two class is because its signal end can not the solder terminal line, when on terminal, using, microphone is connected and can only be provided with being limited with decoding chip on the terminal, can not arbitrarily be provided with, like this, existing digital microphone uses relatively underaction, convenience on terminal.
In addition, existing digital microphone only has a sound channel, or is L channel, it is exactly R channel, like this, when on terminal, using, will be respectively the digital microphone of the digital microphone of a L channel and a R channel be connected with decoding chip on the terminal.Because existing digital microphone has the branch of left and right acoustic channels, therefore, when producing, just need two cover production lines, produce the product of two kinds of sound channels respectively, so not only wasted material resources, manpower, and also production cost is also than higher.For this reason, be necessary to address the above problem.
[utility model content]
The utility model has overcome the deficiency of above-mentioned technology, and a kind of solder joint formula digital microphone that can more optionally be arranged on the terminal is provided.
In order to address the above problem, the utility model adopts following technical scheme:
A kind of solder joint formula digital microphone, include shell, blind end at shell is provided with sound typing mouth, openend at shell is provided with pcb board, portion is provided with the sound typing capacitor of being made up of diaphragm, back pole plate in the enclosure, is provided with the pre-amplification circuit that is electrically connected with back pole plate in described pcb board inboard, and the analog/digital converter that is connected with pre-amplification circuit, be welded with the solder joint as signal output part outside described pcb board, this solder joint is connected with analog/digital converter.
Also be welded with 4 solder joints that are connected with analog/digital converter in the described pcb board outside, respectively as ground end, power end, left and right acoustic channels selecting side, clock signal input terminal.
Described sound typing mouth lateral surface posts the Air Filter that prevents that dust from entering.
Described shell is a drum shape, and pcb board is circular.
Hold the circle centre position that is arranged on pcb board describedly, signal output part, power end, left and right acoustic channels selecting side, clock signal input terminal hold with being distributed in around.
Compared with prior art, the beneficial effects of the utility model are: when 1, the utility model uses on terminal, because solder joint can pass through the solder terminal line, terminal client can directly insert PCB, easy to assembly, the line length adjustable in length, the position of microphone can arbitrarily be provided with, and uses relatively more flexible, convenient; 2, the utility model is regardless of left and right acoustic channels before use, and when producing, it is passable only to need a production line to produce one type product, has saved material resources, manpower greatly, has also saved production cost simultaneously.When 3, using, use different connections as required, the utility model both can become the L channel digital sensor, also can become the R channel digital sensor, and therefore, the utility model uses more flexible.
[description of drawings]
Fig. 1 is a stereogram of the present utility model;
Fig. 2 is a profile of the present utility model;
Fig. 3 is a circuit block diagram of the present utility model;
Fig. 4 is circuit theory diagrams of the present utility model.
[embodiment]
Be described in further detail below in conjunction with accompanying drawing and execution mode of the present utility model:
Referring to Fig. 1-4, the utility model is a kind of solder joint formula digital microphone, include into the shell 1 of drum shape, blind end at shell 1 is provided with sound typing mouth 11, openend at shell 1 is provided with circular pcb board 2, is provided with the cartridge capacitor ECM that is made up of diaphragm 3, back pole plate 4 in shell 1 inside.Described pcb board 2 outsides are welded with and expose in the external world as the solder joint 21 of signal output part D, described pcb board 2 inboards are provided with pre-amplification circuit A, analog/digital converter IC, pre-amplification circuit A is electrically connected with back pole plate 4, and analog/digital converter IC is connected respectively with pre-amplification circuit A and signal output part D.Like this, when the utility model used on terminal, because solder joint can pass through the solder terminal line, terminal client can directly insert PCB, and was easy to assembly, the line length adjustable in length, and the position of microphone can arbitrarily be provided with, and uses relatively more flexible, convenient.
Pcb board of the present utility model 2 outsides also are welded with 4 solder joints 21 that expose in the external world, respectively as ground end G, power end V, left and right acoustic channels selecting side S, clock signal input terminal C; These four solder joints also analog/digital converter IC connect.In the utility model, will hold G to be arranged on the circle centre position of pcb board 2 describedly, with signal output part D, power end V, left and right acoustic channels selecting side S, clock signal input terminal C hold with being distributed in G around.Described analog/digital converter IC can make signal output part D output left channel signals when left and right acoustic channels selecting side S is connected with ground end G, output right-channel signals when left and right acoustic channels selecting side S is connected with power end V.
In order to prevent that dust from entering the inside of this product, the Air Filter 5 that posts at described sound typing mouth 11 lateral surfaces.
Operation principle of the present utility model: when this product uses, the solder joint of microphone can be connected with the decoding chip of equipment such as computer or mobile phone by the solder terminal line, the line length adjustable in length, the position of microphone can arbitrarily be provided with, and uses relatively more flexible, convenient.
If this product is decided to be the L channel microphone, just with the decoding chip wiring time, left and right acoustic channels selecting side S and ground end G are linked together by lead; Decoding chip provides clock signal by clock signal input terminal C for this product, provides power supply by power end V for this product.During work, diaphragm 3 vibrates with outside sound, spacing between diaphragm 3 and the back pole plate 4 is along with corresponding variation is done in vibration, the voltage at cartridge capacitor ECM two ends changes thereupon, the voltage of this variation is input among the pre-amplification circuit A, through pre-amplification circuit A amplifying signal, input to analog/digital converter IC, the signal output part D of analog/digital converter IC exports left channel signals and passes to the decoding chip of external brain or mobile phone.
If this product is decided to be the R channel microphone, just with the main control chip wiring time, left and right acoustic channels selecting side S and power supply V are linked together by lead.The course of work of R channel microphone is with above-mentioned L channel microphone.
Claims (5)
1. solder joint formula digital microphone, include shell (1), blind end at shell (1) is provided with sound typing mouth (11), openend at shell (1) is provided with pcb board (2), be provided with by diaphragm (3) in shell (1) inside, the sound typing capacitor (ECM) that back pole plate (4) is formed, it is characterized in that being provided with the pre-amplification circuit (A) that is electrically connected with back pole plate (4) in described pcb board (2) inboard, and the analog/digital converter (IC) that is connected with pre-amplification circuit (A), be welded with the solder joint (21) as signal output part (D) outside described pcb board (2), this solder joint is connected with analog/digital converter (IC).
2. a kind of solder joint formula digital microphone according to claim 1, it is characterized in that also being welded with 4 solder joints (21) that are connected with analog/digital converter (IC), respectively as ground end (G), power end (V), left and right acoustic channels selecting side (S), clock signal input terminal (C) in described pcb board (2) outside.
3. a kind of solder joint formula digital microphone according to claim 1 and 2 is characterized in that described sound typing mouth (11) lateral surface posts the Air Filter (5) that prevents dust and enter.
4. a kind of solder joint formula digital microphone according to claim 3 is characterized in that described shell (1) is drum shape, and pcb board (2) is circular.
5. a kind of solder joint formula digital microphone according to claim 4, it is characterized in that holding (G) to be arranged on the circle centre position of pcb board (2) describedly, signal output part (D), power end (V), left and right acoustic channels selecting side (S), clock signal input terminal (C) hold with being distributed in (G) around.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202371227U CN202004961U (en) | 2009-10-08 | 2009-10-08 | Welding spot digital loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202371227U CN202004961U (en) | 2009-10-08 | 2009-10-08 | Welding spot digital loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202004961U true CN202004961U (en) | 2011-10-05 |
Family
ID=44707685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202371227U Expired - Lifetime CN202004961U (en) | 2009-10-08 | 2009-10-08 | Welding spot digital loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202004961U (en) |
-
2009
- 2009-10-08 CN CN2009202371227U patent/CN202004961U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160824 Address after: 342300 Yudu City, Ganzhou Province town of tribute on the European Industrial Park Patentee after: Jiangxi Tianjian electroacoustic Co Ltd Address before: 528447 Guangdong city in Zhongshan Province town of Wood River straight port industrial zone A building four floor Patentee before: Zhongshan Tianjian Electroacoustic Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20111005 |
|
| CX01 | Expiry of patent term |