CN204362016U - Sound control recording circuit - Google Patents
Sound control recording circuit Download PDFInfo
- Publication number
- CN204362016U CN204362016U CN201420773463.7U CN201420773463U CN204362016U CN 204362016 U CN204362016 U CN 204362016U CN 201420773463 U CN201420773463 U CN 201420773463U CN 204362016 U CN204362016 U CN 204362016U
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- China
- Prior art keywords
- sound
- recording
- circuit
- amplifying triode
- diode
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- Expired - Fee Related
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- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Abstract
The utility model discloses a kind of sound control recording circuit, comprise microphone, voltage doubling rectifing circuit, amplifying triode, delay circuit, driving triode, recorder motor, sound-recording function selector switch; Microphone is used for collected sound signal, and voice signal is input in voltage doubling rectifing circuit, and voltage doubling rectifing circuit output is connected with amplifying triode base stage, and amplifying triode collector electrode is connected with power supply by resistance; Amplifying triode output signal is connected with delay circuit by collector output, delay circuit output is connected with driving transistor base by diode, ground connection after driving transistor emitter to be connected with recorder motor M, sound-recording function selector switch K is connected to and drives between transistor collector and emitter.The utility model adopts sound control recording circuit, and recording can be made automatically to carry out under the control of sound: when having sound, recording starts, about 5s autostop after voiceless sound.Like this, when carrying out interval and recording, tape can be made to record by noiseless sky.
Description
Technical field
The utility model relates to a kind of electrical appliance control equipment, particularly a kind of sound control recording circuit.
Background technology
Recording device, as the electronic product of SoundRec, is convenient to the speech content of recorded meeting occasion, becomes the widely used electronic product of people.For ease of the convenience of the recording of recording device, existing sound-controlled apparatus can open sound-recording function; But recording circuit device is in running order all the time in Recording Process, if when not recording in long-time, cause unnecessary resource cost, be unfavorable for the electricity saving and energy saving of recording device.If closedown recording device, still need manually opened recording when needs are recorded, then very inconvenient when the recording of recording device uses.
Therefore a kind of automatics of the recording controlled by sound is needed.
Utility model content
In view of this, technical problem to be solved in the utility model is to provide a kind of automatics of the recording controlled by sound.
The purpose of this utility model is achieved in that
The sound control recording circuit that the utility model provides, comprises microphone MIC, voltage doubling rectifing circuit, amplifying triode T1, delay circuit, driving triode T2, recorder motor M, sound-recording function selector switch K;
Described microphone MIC is used for collected sound signal, described voice signal is input in voltage doubling rectifing circuit, described voltage doubling rectifing circuit output is connected with amplifying triode base stage, described amplifying triode grounded emitter, and described amplifying triode collector electrode is connected with power supply by resistance; Described amplifying triode output signal is connected with delay circuit by collector output, described delay circuit output is connected with driving transistor base by diode, ground connection after described driving transistor emitter is connected with recorder motor M, described driving transistor collector and power supply, described sound-recording function selector switch K is connected to and drives between transistor collector and emitter.
Further, described voltage doubling rectifing circuit comprises the first electric capacity Cl, the first diode Dl, the second electric capacity C2 and the second diode D2;
Described first electric capacity Cl one end is connected with microphone MIC by adjustable resistance, and described first diode Dl is connected with the first electric capacity Cl other end;
Described second diode D2 is connected between the first electric capacity Cl and amplifying triode base stage;
Described second electric capacity C2 is parallel between amplifying triode base stage and ground.
Further, described recorder motor M two ends are parallel with diode.
Further, also comprise and be series at charging resistor R3 between VDD-to-VSS and charging capacitor C3, described charging resistor R3 and charging capacitor C3 tie point is connected with delay circuit.
Further, described delay circuit adopts NE555.
The beneficial effects of the utility model are: the utility model adopts sound control recording circuit, and recording can be made automatically to carry out under the control of sound: when having sound, recording starts, about 5s autostop after voiceless sound.Like this, when carrying out interval and recording, tape can be made to record by noiseless sky.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model is described in further detail, wherein:
The sound control recording circuit diagram that Fig. 1 provides for the utility model embodiment.
Embodiment
Hereinafter with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail.Should be appreciated that preferred embodiment only in order to the utility model is described, instead of in order to limit protection range of the present utility model.
As shown in the figure, the sound control recording circuit that the utility model provides, comprises microphone MIC, voltage doubling rectifing circuit, amplifying triode T1, delay circuit, driving triode T2, recorder motor M, sound-recording function selector switch K;
Described microphone MIC is used for collected sound signal, described voice signal is input in voltage doubling rectifing circuit, described voltage doubling rectifing circuit output is connected with amplifying triode base stage, described amplifying triode grounded emitter, and described amplifying triode collector electrode is connected with power supply by resistance; Described amplifying triode output signal is connected with delay circuit by collector output, described delay circuit output is connected with driving transistor base by diode, ground connection after described driving transistor emitter is connected with recorder motor M, described driving transistor collector and power supply, described sound-recording function selector switch K is connected to and drives between transistor collector and emitter.
Described voltage doubling rectifing circuit comprises the first electric capacity Cl, the first diode Dl, the second electric capacity C2 and the second diode D2;
Described first electric capacity Cl one end is connected with microphone MIC by adjustable resistance, and described first diode Dl is connected with the first electric capacity Cl other end;
Described second diode D2 is connected between the first electric capacity Cl and amplifying triode base stage;
Described second electric capacity C2 is parallel between amplifying triode base stage and ground.
Described recorder motor M two ends are parallel with diode.
Also comprise and be series at charging resistor R3 between VDD-to-VSS and charging capacitor C3, described charging resistor R3 and charging capacitor C3 tie point is connected with delay circuit.
Described delay circuit adopts NE555.
The sound control recording circuit that the present embodiment provides is contained in recorder, and recording can be made automatically to carry out under the control of sound: when having sound, recording starts, about 5s autostop after voiceless sound.Like this, when carrying out interval and recording, tape can be made to record by noiseless sky.MIC is microphone, and M is recorder motor, and K is " acoustic control " automatic recording and " manual control " sound-recording function selector switch.Integrated package NE555 forms delay circuit.
When voiceless sound, MIC no signal, T1 ends, and D3 also ends, and C3 is charged to supply voltage, NE555 output low level, and T2 ends, and motor M remains static, and does not at this moment record.
When there being sound, MIC output audio voltage, makes T1 conducting after the voltage doubling rectifing circuit of Cl, Dl, D2, C2 composition, and C3 is by D3, T1 electric discharge, so the output switching activity of 3 pin of NE555 is high level, T2 conducting, motor M is rotated, and automatically enters people's recording state.
If recording sound has interruption, then T1 cut-off, power supply is charged to C3 by R3, is full of after about 5s, NE555 output low level, and T2 ends, motor stalling, and recording stops.After sound recovers, recorder enters recording state again automatically.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described the utility model by referring to preferred embodiment of the present utility model, but those of ordinary skill in the art is to be understood that, various change can be made to it in the form and details, and not depart from the spirit and scope that the utility model limits.
Claims (5)
1. sound control recording circuit, is characterized in that: comprise microphone, voltage doubling rectifing circuit, amplifying triode, delay circuit, driving triode, recorder motor and sound-recording function selector switch;
Described microphone MIC is used for collected sound signal, described voice signal is input in voltage doubling rectifing circuit, described voltage doubling rectifing circuit output is connected with amplifying triode base stage, described amplifying triode grounded emitter, and described amplifying triode collector electrode is connected with power supply by resistance; Described amplifying triode output signal is connected with delay circuit by collector output, described delay circuit output is connected with driving transistor base by diode, ground connection after described driving transistor emitter is connected with recorder motor M, described driving transistor collector and power supply, described sound-recording function selector switch K is connected to and drives between transistor collector and emitter.
2. sound control recording circuit according to claim 1, is characterized in that: described voltage doubling rectifing circuit comprises the first electric capacity Cl, the first diode Dl, the second electric capacity C2 and the second diode D2;
Described first electric capacity Cl one end is connected with microphone MIC by adjustable resistance, and described first diode Dl is connected with the first electric capacity Cl other end;
Described second diode D2 is connected between the first electric capacity Cl and amplifying triode base stage;
Described second electric capacity C2 is parallel between amplifying triode base stage and ground.
3. sound control recording circuit according to claim 1, is characterized in that: described recorder motor M two ends are parallel with diode.
4. sound control recording circuit according to claim 1, is characterized in that: also comprise and be series at charging resistor R3 between VDD-to-VSS and charging capacitor C3, described charging resistor R3 and charging capacitor C3 tie point is connected with delay circuit.
5. sound control recording circuit according to claim 1, is characterized in that: described delay circuit adopts NE555.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420773463.7U CN204362016U (en) | 2014-12-09 | 2014-12-09 | Sound control recording circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420773463.7U CN204362016U (en) | 2014-12-09 | 2014-12-09 | Sound control recording circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204362016U true CN204362016U (en) | 2015-05-27 |
Family
ID=53263461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420773463.7U Expired - Fee Related CN204362016U (en) | 2014-12-09 | 2014-12-09 | Sound control recording circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204362016U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016201765A1 (en) * | 2015-06-16 | 2016-12-22 | 中兴通讯股份有限公司 | Method and device for controlling recording |
-
2014
- 2014-12-09 CN CN201420773463.7U patent/CN204362016U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016201765A1 (en) * | 2015-06-16 | 2016-12-22 | 中兴通讯股份有限公司 | Method and device for controlling recording |
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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 |
Granted publication date: 20150527 Termination date: 20151209 |
|
| EXPY | Termination of patent right or utility model |