CN202679622U - Electret microphone with anti-electromagnetic interference function, and PCB (Printed Circuit Board) - Google Patents
Electret microphone with anti-electromagnetic interference function, and PCB (Printed Circuit Board) Download PDFInfo
- Publication number
- CN202679622U CN202679622U CN 201220356606 CN201220356606U CN202679622U CN 202679622 U CN202679622 U CN 202679622U CN 201220356606 CN201220356606 CN 201220356606 CN 201220356606 U CN201220356606 U CN 201220356606U CN 202679622 U CN202679622 U CN 202679622U
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- pcb board
- ring
- electromagnetic interference
- microphone
- open circuit
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Abstract
The utility model discloses an electret microphone with anti-electromagnetic interference function, and a PCB (Printed Circuit Board). The electret microphone with the anti-electromagnetic interference function comprises a shell and a PCB arranged in the shell, wherein a metal gate ring arranged on the paster surface of the PCB, an opening ring is arranged outside the metal gate ring, and the opening ring and the negative electrode in the right side of the PCB are conducted. The electret microphone with the anti-electromagnetic interference function has the beneficial effects that the anti-electromagnetic interference performance of the microphone can be effectively improved and the puzzles of current voice and noise are solved when the microphone is applied, and the convenience is brought for application of the microphone.
Description
Technical field
The utility model relates to the electret microphone field, particularly relates to a kind of electret microphone with anti-electromagnetic interference function.
Background technology
Twentieth century, microphone develops into inductance, condenser type conversion by the initial resistance conversion acoustic-electric that passes through, a large amount of new mike techniques grow up gradually, and this is comprising microphones such as aluminium strip, moving-coils, and current widely used condenser microphone and electret microphone.Nowadays, microphone more and more is subject to people's attention, and people are also more and more higher to the requirement of microphone.Present electret microphone, its volume is little, is suitable for automated production, but its anti-electromagnetic interference performance is poor, usually is subjected to easily the impact of electromagnetic interference and sends current sound or noise, makes it bring many puzzlements and inconvenience in application process.
The utility model content
The purpose of this utility model is to provide a kind of electret microphone with anti-electromagnetic interference function, is intended to the anti-electromagnetic interference performance of Effective Raise microphone, solves current sound and noise puzzlement when using microphone, convenient application to microphone.
The utility model is to realize like this, a kind of electret microphone with anti-electromagnetic interference function comprises shell, is installed in the pcb board in the shell, described pcb board paster face is provided with a metal grating ring, described metal grating ring is outside equipped with an open circuit ring, conducting between described open circuit ring and the described pcb board front negative pole.
Further, described metal grating ring, open circuit ring, pcb board front negative pole are copper foil layer.
Further, be provided with at least one or a plurality of metal throuth hole between the outer open circuit ring of described pcb board paster face metal grating ring and pcb board front negative pole.
Further, the size range of the diameter of described metal throuth hole is 0.2～0.3mm.
Further, realize being connected between the outer open circuit ring of pcb board paster face metal grating ring and pcb board front negative pole by plating mode in the described metal throuth hole.
A kind of pcb board, described pcb board paster face is provided with a metal grating ring, and described metal grating ring is outside equipped with an open circuit ring, conducting between described open circuit ring and the described pcb board front negative pole.
Further, described metal grating ring, open circuit ring, pcb board front negative pole are copper foil layer.
Further, be provided with at least one or a plurality of metal throuth hole between the outer open circuit ring of described pcb board paster face metal grating ring and pcb board front negative pole.
Further, the size range of the diameter of described metal throuth hole is 0.2～0.3mm.
Further, realize being connected between the outer open circuit ring of pcb board paster face metal grating ring and pcb board front negative pole by plating mode in the described metal throuth hole.
Compared with prior art, the beneficial effects of the utility model are: the anti-electromagnetic interference performance of energy Effective Raise microphone solves the puzzlement that occurs current sound and noise when using microphone, convenient application to microphone.
Description of drawings
The electret microphone structural representation with anti-electromagnetic interference function that Fig. 1 provides for the utility model;
The schematic diagram of the electret microphone PCB plate reverse side structural design with anti-electromagnetic interference function that Fig. 2 provides for the utility model;
The schematic diagram that the electret microphone PCB plate Facad structure with anti-electromagnetic interference function that Fig. 3 provides for the utility model designs.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
In the utility model embodiment, by electret PCB (Printed Circuit Board, printed circuit board (PCB)) design of plate, realized the Effective Raise of the anti-electromagnetic interference performance of microphone, solved the puzzlement that current sound and noise when using microphone, occur, convenient use to microphone.
Be illustrated in figure 1 as the electret microphone structural representation with anti-electromagnetic interference function that the utility model provides, the schematic diagram that the electret microphone PCB plate Facad structure with anti-electromagnetic interference function that Fig. 2 provides for the utility model designs, the schematic diagram of the electret microphone PCB plate reverse side structural design with anti-electromagnetic interference function that Fig. 3 provides for the utility model, in conjunction with Fig. 1, Fig. 2 and Fig. 3, this electret microphone with anti-electromagnetic interference function comprises shell 7, be installed in the pcb board 1 in the shell 7, metal connecting ring 2, cavity 3, back pole plate 4, pad 5, vibrating diaphragm 6.
On the shell 7 with sound hole, the paster face of pcb board 1 is welded with field effect transistor and Resistor-Capacitor Unit, cavity 3 is installed in the cavity of shell 7 and pcb board 1 formation, the back pole plate 4 in the sound hole of mounting strap and metal connecting ring 2 in the cavity 3, the lower end of cavity 3 is equipped with vibrating diaphragm 6 and pad 5, the upper end of metal connecting ring 2 is electrically connected with the metal grating ring 10 of pcb board 1, and the lower end is electrically connected with back pole plate 4, also is provided with an open circuit ring 9 outside pcb board 1 paster face metal grating ring 10.
As an embodiment of the present utility model, described metal grating ring 10, open circuit ring 9, pcb board 1 front negative pole are copper foil layer, are provided with at least one or a plurality of metal throuth hole 8 between the open circuit ring 9 that described pcb board 1 paster face metal grating ring 10 is outer and pcb board front negative pole.The size range of the diameter of metal throuth hole 8 is 0.2～0.3mm.Realize being connected between the outer open circuit ring 9 of pcb board 1 paster face metal grating ring 10 and pcb board front negative pole by plating mode in the metal throuth hole 8.
In when normal operation, can guarantee to be electrically connected between the outer open circuit ring 9 of pcb board 1 paster face metal grating ring 10 and pcb board front negative pole.
Among the utility model embodiment, anti-electromagnetic interference performance and the antistatic effect that improves microphone with electret microphone energy Effective Raise microphone of anti-electromagnetic interference function, the puzzlement of current sound and noise appears in solution when using microphone, convenient application to microphone.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (10)
1. electret microphone with anti-electromagnetic interference function, comprise shell, be installed in the pcb board in the shell, it is characterized in that, described pcb board paster face is provided with a metal grating ring, described metal grating ring is outside equipped with an open circuit ring, conducting between described open circuit ring and the described pcb board front negative pole.
2. the electret microphone with anti-electromagnetic interference function as claimed in claim 1 is characterized in that, described metal grating ring, open circuit ring, pcb board front negative pole are copper foil layer.
3. the electret microphone with anti-electromagnetic interference function as claimed in claim 1 is characterized in that, is provided with at least one or a plurality of metal throuth hole between the open circuit ring that described pcb board paster face metal grating ring is outer and pcb board front negative pole.
4. the electret microphone with anti-electromagnetic interference function as claimed in claim 3 is characterized in that, the size range of the diameter of described metal throuth hole is 0.2～0.3mm.
5. the electret microphone with anti-electromagnetic interference function as claimed in claim 4 is characterized in that, realizes being connected between the outer open circuit ring of pcb board paster face metal grating ring and pcb board front negative pole by plating mode in the described metal throuth hole.
6. a pcb board is characterized in that, described pcb board paster face is provided with a metal grating ring, and described metal grating ring is outside equipped with an open circuit ring, conducting between described open circuit ring and the described pcb board front negative pole.
7. pcb board as claimed in claim 6 is characterized in that, described metal grating ring, open circuit ring, pcb board front negative pole are copper foil layer.
8. pcb board as claimed in claim 6 is characterized in that, is provided with at least one or a plurality of metal throuth hole between the open circuit ring that described pcb board paster face metal grating ring is outer and pcb board front negative pole.
9. pcb board as claimed in claim 8 is characterized in that, the size range of the diameter of described metal throuth hole is 0.2～0.3mm.
10. pcb board as claimed in claim 9 is characterized in that, realizes being connected between the outer open circuit ring of pcb board paster face metal grating ring and pcb board front negative pole by plating mode in the described metal throuth hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220356606 CN202679622U (en) | 2012-07-11 | 2012-07-11 | Electret microphone with anti-electromagnetic interference function, and PCB (Printed Circuit Board) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220356606 CN202679622U (en) | 2012-07-11 | 2012-07-11 | Electret microphone with anti-electromagnetic interference function, and PCB (Printed Circuit Board) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202679622U true CN202679622U (en) | 2013-01-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220356606 Expired - Fee Related CN202679622U (en) | 2012-07-11 | 2012-07-11 | Electret microphone with anti-electromagnetic interference function, and PCB (Printed Circuit Board) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202679622U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103179478A (en) * | 2013-04-09 | 2013-06-26 | 山东共达电声股份有限公司 | Microphone suitable for operating under high illumination conditions |
-
2012
- 2012-07-11 CN CN 201220356606 patent/CN202679622U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103179478A (en) * | 2013-04-09 | 2013-06-26 | 山东共达电声股份有限公司 | Microphone suitable for operating under high illumination conditions |
| CN103179478B (en) * | 2013-04-09 | 2016-09-14 | 山东共达电声股份有限公司 | It is suitable for the mike worked under high illumination condition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20160711 |