CN204168251U - With the glasses of microphone - Google Patents
With the glasses of microphone Download PDFInfo
- Publication number
- CN204168251U CN204168251U CN201420673402.3U CN201420673402U CN204168251U CN 204168251 U CN204168251 U CN 204168251U CN 201420673402 U CN201420673402 U CN 201420673402U CN 204168251 U CN204168251 U CN 204168251U
- Authority
- CN
- China
- Prior art keywords
- resistance
- electric capacity
- amplifier
- microphone
- operational amplifier
- 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
Landscapes
- Circuit For Audible Band Transducer (AREA)
Abstract
The utility model discloses the glasses with microphone, comprise glasses, microphone, glasses comprise temple, temple is threaded microphone, microphone comprises voice amplification circuit, and voice amplification circuit comprises primary signal amplifier, secondary amplifier, power amplifier, and primary signal amplifier connects the secondary amplifier of mixing, secondary amplifier connects power amplifier, and the utility model provides a kind of structure glasses with microphone simple, easy to use.
Description
Technical field
The utility model relates to the glasses with microphone.
Background technology
Student is in Learning in School process, on the one hand, when being sitting in the learner answering questions problem being positioned at rear row, because classroom is larger, sometimes can because of student sound little, so teacher just needs to go in face of student and could listen clear, hears out and needs to go on blackboard, inconvenience very, on the other hand, in teacher's process at school, due to after talking up class for a long time, so teacher can be short of physical strength, effort very, to such an extent as to do not have strength to speak up, so student just can not know the content hearing that teacher teaches, and affects the study of student.
Utility model content
The purpose of this utility model overcomes deficiency in existing product, provides the glasses with microphone that structure is simple, easy to use.
In order to achieve the above object, the utility model is achieved through the following technical solutions:
Glasses with microphone of the present utility model, comprise glasses, microphone, glasses comprise temple, temple is threaded microphone, microphone comprises voice amplification circuit, voice amplification circuit comprises primary signal amplifier, secondary amplifier, power amplifier, and primary signal amplifier connects the secondary amplifier of mixing, and secondary amplifier connects power amplifier.
Primary signal amplifier of the present utility model comprises operational amplifier U1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, electric capacity C1, electric capacity C2, electric capacity C3, voice signal is input to the input in the same way of operational amplifier U1 by electric capacity C1, the input in the same way of operational amplifier U1 is also connected in series resistance R3, the input in the same way of operational amplifier U1 also connects earth signal by resistance R4, resistance R3 is connected in series resistance R1, resistance R1 connects earth signal by resistance R2, the reverse input end of operational amplifier U1 is connected in series resistance R5, resistance R5 connects earth signal by electric capacity C3, the reverse input end of operational amplifier U1 passes through the output of resistance R6 concatenation operation amplifier U1.
Secondary amplifier of the present utility model comprises operational amplifier U2, resistance R12, resistance R11, resistance R13, resistance R14, resistance R15, electric capacity C11, electric capacity C13, the reverse input end of resistance R12 concatenation operation amplifier U2, one end of resistance R11 connects 12V power supply, the reverse input end of the other end concatenation operation amplifier U2 of resistance R11, the other end of resistance R11 connects earth signal by resistance R13, the reverse input end of operational amplifier U2 passes through the output of resistance R14 concatenation operation amplifier U2, and the output of operational amplifier U2 is connected in series electric capacity C13.
Power amplifier of the present utility model comprises operational amplifier U3, electric capacity C21, electric capacity C23, electric capacity C24, electric capacity C26, electric capacity C27, resistance R24, resistance R23, resistance R22, resistance R21, resistance RL, the input in the same way of electric capacity C21 concatenation operation amplifier U3, the reverse input end of operational amplifier U3 is connected in series resistance R24, resistance R24 is by electric capacity C27 concatenation operation amplifier U3 output, the reverse input end of operational amplifier U3 connects one end of electric capacity C24, the other end of electric capacity C24 connects earth signal by resistance R23, the other end of electric capacity C24 is also by resistance R22 concatenation operation amplifier U3 output, operational amplifier U3 output connects one end of electric capacity C23, the other end of electric capacity C23 connects earth signal by resistance RL, the other end of electric capacity C23 connects one end of electric capacity C26, the other end of electric capacity C26 connects earth signal by resistance R21.
The beneficial effects of the utility model are as follows: temple of the present utility model is threaded microphone, therefore teacher at school time or learner answering questions problem time, have on glasses, and do not need to take microphone, just can teach softly, by voice amplification circuit, sound is amplified again, so teacher or learner answering questions problem just do not need to bark out, use easily, more laborsaving, and temple is threaded microphone, therefore microphone is dismountable, when not needing to use microphone, just can disassemble, very convenient, the utility model structure is simple, cost is low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the circuit theory diagrams of primary signal amplifier of the present utility model;
Fig. 3 is the circuit theory diagrams of secondary amplifier of the present utility model;
Fig. 4 is the circuit theory diagrams of power amplifier of the present utility model.
Embodiment
Below in conjunction with Figure of description, the technical solution of the utility model is described further:
As shown in Figure 1, Figure 2, Figure 3, Figure 4, glasses with microphone comprise glasses 1, microphone 2, glasses 1 comprise temple 11, temple 11 is threaded microphone 2, microphone 2 comprises voice amplification circuit 21, voice amplification circuit 21 comprises primary signal amplifier, secondary amplifier, power amplifier, and primary signal amplifier connects the secondary amplifier of mixing, and secondary amplifier connects power amplifier.
Primary signal amplifier of the present utility model comprises operational amplifier U1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, electric capacity C1, electric capacity C2, electric capacity C3, voice signal is input to the input in the same way of operational amplifier U1 by electric capacity C1, the input in the same way of operational amplifier U1 is also connected in series resistance R3, the input in the same way of operational amplifier U1 also connects earth signal by resistance R4, resistance R3 is connected in series resistance R1, resistance R1 connects earth signal by resistance R2, the reverse input end of operational amplifier U1 is connected in series resistance R5, resistance R5 connects earth signal by electric capacity C3, the reverse input end of operational amplifier U1 passes through the output of resistance R6 concatenation operation amplifier U1.
Secondary amplifier of the present utility model comprises operational amplifier U2, resistance R12, resistance R11, resistance R13, resistance R14, resistance R15, electric capacity C11, electric capacity C13, the reverse input end of two ends concatenation operation amplifier U2 of resistance R12 and the output of operational amplifier U1, one end of resistance R11 connects 12V power supply, the reverse input end of the other end concatenation operation amplifier U2 of resistance R11, the other end of resistance R11 connects earth signal by resistance R13, the reverse input end of operational amplifier U2 passes through the output of resistance R14 concatenation operation amplifier U2, the output of operational amplifier U2 is connected in series electric capacity C13.
Power amplifier of the present utility model comprises operational amplifier U3, electric capacity C21, electric capacity C23, electric capacity C24, electric capacity C26, electric capacity C27, resistance R24, resistance R23, resistance R22, resistance R21, resistance RL, electric capacity C13 is connected in series electric capacity C21, the input in the same way of electric capacity C21 concatenation operation amplifier U3, the reverse input end of operational amplifier U3 is connected in series resistance R24, resistance R24 is by electric capacity C27 concatenation operation amplifier U3 output, the reverse input end of operational amplifier U3 connects one end of electric capacity C24, the other end of electric capacity C24 connects earth signal by resistance R23, the other end of electric capacity C24 is also by resistance R22 concatenation operation amplifier U3 output, operational amplifier U3 output connects one end of electric capacity C23, the other end of electric capacity C23 connects earth signal by resistance RL, the other end of electric capacity C23 connects one end of electric capacity C26, the other end of electric capacity C26 connects earth signal by resistance R21.
Voice signal is amplified by primary signal amplifier, secondary amplifier, power amplifier by the utility model, makes the undistorted amplification of signal.Temple of the present utility model is threaded microphone, therefore teacher at school time or learner answering questions problem time, have on glasses, and do not need to take microphone, just can teach softly, amplified by sound by voice amplification circuit, so teacher or learner answering questions problem just do not need to bark out, and use easily again, more laborsaving, and temple is threaded microphone, therefore microphone is dismountable, when not needing to use microphone, just can disassemble, very convenient, the utility model structure is simple, and cost is low.
It should be noted that above what enumerate is only a kind of specific embodiment of the present utility model.Obviously, the utility model is not limited to above embodiment, can also have many distortion.
In a word, all distortion that those of ordinary skill in the art can directly derive from content disclosed in the utility model or associate, all should think protection range of the present utility model.
Claims (4)
1. with the glasses of microphone, it is characterized in that, comprise glasses (1), microphone (2), described glasses (1) comprise temple (11), described temple (11) is threaded microphone (2), described microphone (2) comprises voice amplification circuit (21), described voice amplification circuit (21) comprises primary signal amplifier, secondary amplifier, power amplifier, described primary signal amplifier connects the secondary amplifier of mixing, and described secondary amplifier connects power amplifier.
2. according to claim 1 with the glasses of microphone, it is characterized in that, described primary signal amplifier comprises operational amplifier U1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, electric capacity C1, electric capacity C2, electric capacity C3, described voice signal is input to the input in the same way of operational amplifier U1 by electric capacity C1, the input in the same way of described operational amplifier U1 is also connected in series resistance R3, the input in the same way of described operational amplifier U1 also connects earth signal by resistance R4, described resistance R3 is connected in series resistance R1, described resistance R1 connects earth signal by resistance R2, the reverse input end of described operational amplifier U1 is connected in series resistance R5, described resistance R5 connects earth signal by electric capacity C3, the reverse input end of described operational amplifier U1 passes through the output of resistance R6 concatenation operation amplifier U1.
3. according to claim 1 with the glasses of microphone, it is characterized in that, described secondary amplifier comprises operational amplifier U2, resistance R12, resistance R11, resistance R13, resistance R14, resistance R15, electric capacity C11, electric capacity C13, the reverse input end of described resistance R12 concatenation operation amplifier U2, one end of described resistance R11 connects 12V power supply, the reverse input end of the other end concatenation operation amplifier U2 of described resistance R11, the other end of described resistance R11 connects earth signal by resistance R13, the reverse input end of described operational amplifier U2 passes through the output of resistance R14 concatenation operation amplifier U2, the output of described operational amplifier U2 is connected in series electric capacity C13.
4. according to claim 1 with the glasses of microphone, it is characterized in that, described power amplifier comprises operational amplifier U3, electric capacity C21, electric capacity C23, electric capacity C24, electric capacity C26, electric capacity C27, resistance R24, resistance R23, resistance R22, resistance R21, resistance RL, the input in the same way of described electric capacity C21 concatenation operation amplifier U3, the reverse input end of described operational amplifier U3 is connected in series resistance R24, described resistance R24 is by electric capacity C27 concatenation operation amplifier U3 output, the reverse input end of described operational amplifier U3 connects one end of electric capacity C24, the other end of described electric capacity C24 connects earth signal by resistance R23, the other end of described electric capacity C24 is also by resistance R22 concatenation operation amplifier U3 output, described operational amplifier U3 output connects one end of electric capacity C23, the other end of described electric capacity C23 connects earth signal by resistance RL, the other end of described electric capacity C23 connects one end of electric capacity C26, and the other end of described electric capacity C26 connects earth signal by resistance R21.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420673402.3U CN204168251U (en) | 2014-11-10 | 2014-11-10 | With the glasses of microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420673402.3U CN204168251U (en) | 2014-11-10 | 2014-11-10 | With the glasses of microphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204168251U true CN204168251U (en) | 2015-02-18 |
Family
ID=52541899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420673402.3U Expired - Fee Related CN204168251U (en) | 2014-11-10 | 2014-11-10 | With the glasses of microphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204168251U (en) |
-
2014
- 2014-11-10 CN CN201420673402.3U patent/CN204168251U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205050395U (en) | English sound production exerciser | |
| CN204168251U (en) | With the glasses of microphone | |
| CN204315115U (en) | A kind of multi-functional record word pen | |
| CN204393719U (en) | A kind of English teaching lectern | |
| CN202033934U (en) | Training device for teaching analog electronic technique | |
| CN203801995U (en) | Special table for English teaching with translation displaying function | |
| CN204117389U (en) | A kind of English learning machine with oneself | |
| CN204332121U (en) | A kind of Novel English teaching Graphic Panel | |
| CN202677639U (en) | Multi-functional interactive electronic white board | |
| CN202939818U (en) | Hearing training device for university English teaching | |
| CN203028512U (en) | Movable type training aid for teaching in political education course | |
| CN204695608U (en) | A kind of Computer-Managed Instruction system | |
| CN203405967U (en) | Classical Chinese learning device | |
| CN204087542U (en) | English Pronunciation device | |
| CN202198078U (en) | Desk for teaching English | |
| CN201213309Y (en) | Microphone having infrared cursor | |
| CN201955930U (en) | Interactive voice control ideological education device | |
| CN201976776U (en) | Clothes helpful to study | |
| CN204440691U (en) | A kind of English teaching multimedia stereomicrophone system | |
| CN203537554U (en) | Simple earphone circuit for English teaching | |
| CN105279809A (en) | Novel microcomputer class attendance system | |
| CN204168473U (en) | A kind of microphone with volume adjusting function | |
| CN204232570U (en) | A kind of novel desk | |
| CN204316704U (en) | A kind of English study earphone | |
| CN206402449U (en) | A kind of English teaching public address set |
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 |
Granted publication date: 20150218 Termination date: 20151110 |
|
| EXPY | Termination of patent right or utility model |