CN204362021U - Circuit is connected in acoustic control - Google Patents
Circuit is connected in acoustic control Download PDFInfo
- Publication number
- CN204362021U CN204362021U CN201420773496.1U CN201420773496U CN204362021U CN 204362021 U CN204362021 U CN 204362021U CN 201420773496 U CN201420773496 U CN 201420773496U CN 204362021 U CN204362021 U CN 204362021U
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- circuit
- triode
- signal
- sound
- amplifying circuit
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Abstract
The utility model discloses a kind of acoustic control and connect circuit, comprise sound detection circuit, sound signal amplifying circuit, second amplifying circuit, current rectifying and wave filtering circuit and drive circuit; Sound detection circuit, for obtaining voice signal and voice signal being input to sound signal amplifying circuit; Sound signal amplifying circuit carries out amplification process to the voice signal received; Second amplifying circuit amplifies the signal after processing for receiving sound signal amplifying circuit and again carries out amplification process; Current rectifying and wave filtering circuit, for receiving the signal of second amplifying circuit output and carrying out rectifying and wave-filtering process; Drive circuit produces the signal of drive circuit break-make by the signal of current rectifying and wave filtering circuit process.It is the very simple but sound control circuit that sensitivity is very high of of making of discrete component that circuit is connected in acoustic control that the utility model provides.When there is sound in the external world, relay is connected, when extraneous voiceless sound, and relay power-off.
Description
Technical field
The utility model relates to a kind of circuit arrangement, and particularly circuit is connected in a kind of acoustic control.
Background technology
In daily life, connection or the closedown of electrical appliance often need to be controlled by Push switch, and the opening and closing of corresponding electrical appliance are very inconvenient.General remote control ask for help again must hold remote controller in hand, thus also feel less to facilitate.
Therefore the control device that a kind of easy to operate electrical appliance is communicated with or closes is needed.
Utility model content
In view of this, technical problem to be solved in the utility model is to provide the control device that a kind of easy to operate electrical appliance is communicated with or closes.
The purpose of this utility model is achieved in that
Circuit is connected in the acoustic control that the utility model provides, and comprises sound detection circuit, sound signal amplifying circuit, second amplifying circuit, current rectifying and wave filtering circuit and drive circuit;
Described sound detection circuit, for obtaining voice signal and voice signal being input to sound signal amplifying circuit;
Described sound signal amplifying circuit carries out amplification process to the voice signal received;
Described second amplifying circuit amplifies the signal after processing for receiving sound signal amplifying circuit and again carries out amplification process;
Described current rectifying and wave filtering circuit, for receiving the signal of second amplifying circuit output and carrying out rectifying and wave-filtering process;
Described drive circuit produces the signal of drive circuit break-make by the signal of current rectifying and wave filtering circuit process.
Further, described drive circuit is connected with relay, and described connecting and disconnecting of the circuit is realized by the break-make of relay R L1.
Further, described sound detection circuit MIC adopts moving coil type microphone or Electret condenser microphone.
Further, described sound detection circuit is connected with power circuit by build-out resistor R1.
Further, described sound signal amplifying circuit comprises the first triode BC109C, the second triode BC109C and gain resistor;
Described first triode BC109C base stage is connected with sound detection circuit by electric capacity, described first triode BC109C emitter is connected to ground by gain resistor, described gain resistor adjustable side is connected to ground by series capacitance, described first triode BC109C collector electrode is connected with the second triode BC109C base stage, the emitter of described second triode BC109C is connected with second amplifying circuit, the emitter of described second triode BC109C is by grounding through resistance, and described resistance two ends are parallel with shunt capacitance.
Further, described second amplifying circuit comprises the 3rd triode BC182B, described 3rd triode BC182B grounded emitter, and collector electrode is connected with drive circuit by current rectifying and wave filtering circuit, the 3rd triode BC182B collector electrode output AC voice signal.
Further, described current rectifying and wave filtering circuit comprises the first diode 1N4148, the second diode 1N4148, filter capacitor; Described drive circuit comprises driving triode BC212B,
Described first diode 1N4148 connects in the base stage of driving triode in the driving circuit, described second diode 1N4148 one end is connected with the first diode 1N4148, the other end is connected with power circuit, and described filter capacitor is connected between power circuit and the base stage driving triode.
Further, described drive circuit carrys out the break-make of control relay RL1 by controlling triode ON and cut-off;
Further, also comprise LED light, described LED light is parallel to the operating state that relay two ends are used to indicate relay.
The beneficial effects of the utility model are: circuit is connected in acoustic control that the utility model provides, are the very simple but sound control circuits that sensitivity is very high of of making of discrete component.When there is sound in the external world, relay is connected, when extraneous voiceless sound, and relay power-off.Controlled and resistive feedback circuit by sound signal amplifying circuit and circuit gain adjustable resistance, ensure that amplifying circuit steady operation.
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 structure chart of the device that Fig. 1 provides for the utility model embodiment.
In figure, moving coil type microphone 1, build-out resistor 2, first triode 31, second triode 32, gain resistor 33, the 3rd triode 4, first diode 51, second diode 52, filter capacitor 53, relay 6, LED light 7.
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, circuit is connected in the acoustic control that the utility model provides, and comprises sound detection circuit, sound signal amplifying circuit, second amplifying circuit, current rectifying and wave filtering circuit and drive circuit;
Described sound detection circuit, for obtaining voice signal and voice signal being input to sound signal amplifying circuit;
Described sound signal amplifying circuit carries out amplification process to the voice signal received;
Described second amplifying circuit amplifies the signal after processing for receiving sound signal amplifying circuit and again carries out amplification process;
Described current rectifying and wave filtering circuit, for receiving the signal of second amplifying circuit output and carrying out rectifying and wave-filtering process;
Described drive circuit produces the signal of drive circuit break-make by the signal of current rectifying and wave filtering circuit process.
Described drive circuit is connected with relay, and described connecting and disconnecting of the circuit is realized by the break-make of relay R L1.
Described sound detection circuit MIC adopts moving coil type microphone 1 or Electret condenser microphone.
Described sound detection circuit is connected with power circuit by build-out resistor 2 (representing with R1 in figure).
Described sound signal amplifying circuit comprises the first triode 3 (being 1BC109C in figure), the second triode 3 (being 2BC109C in figure) and gain resistor 33;
Described first triode BC109C base stage is connected with sound detection circuit by electric capacity, described first triode BC109C emitter is connected to ground by gain resistor, described gain resistor adjustable side is connected to ground by series capacitance, described first triode BC109C collector electrode is connected with the second triode BC109C base stage, the emitter of described second triode BC109C is connected with second amplifying circuit, the emitter of described second triode BC109C is by grounding through resistance, and described resistance two ends are parallel with shunt capacitance.
Described second amplifying circuit comprises the 3rd triode 4 (being BC182B in figure), described 3rd triode BC182B grounded emitter, collector electrode is connected with drive circuit by current rectifying and wave filtering circuit, the 3rd triode BC182B collector electrode output AC voice signal.
Described current rectifying and wave filtering circuit comprises the first diode 51 (being 1N4148 in figure), the second diode 52 (being 1N4148 in figure), filter capacitor; Described drive circuit comprises driving triode BC212B,
Described first diode 1N4148 connects in the base stage of driving triode in the driving circuit, described second diode 1N4148 one end is connected with the first diode 1N4148, the other end is connected with power circuit, and described filter capacitor 53 is connected between power circuit and the base stage driving triode.
Described drive circuit carrys out the break-make of control relay RL1 by controlling triode ON and cut-off;
Also comprise LED light 7, described LED light is parallel to the operating state that relay two ends are used to indicate relay.
The electric capacity that 3 10 μ F in circuit are connected in the acoustic control that the present embodiment provides plays stopping direct current, when there is no voice signal, and 3 triode all not conductings that base stage is connected with 10 μ F electric capacity, relay 6 (in figure being) RL1 power-off; When there is sound in the external world, 3 10 μ F electric capacity all have alternating current to pass through, BC212B maintains constant conduction by 4.7 μ F electric capacity in base stage, thus relay R L1 obtains electric.
Sound detection part (being MIC in figure) can be moving coil type microphone or Electret condenser microphone.If use the latter, need use resistance R1, its resistance can be selected between 2.2k Ω to 10k Ω according to different Electret condenser microphones.
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 (9)
1. circuit is connected in acoustic control, it is characterized in that: comprise sound detection circuit, sound signal amplifying circuit, second amplifying circuit, current rectifying and wave filtering circuit and drive circuit;
Described sound detection circuit, for obtaining voice signal and voice signal being input to sound signal amplifying circuit; Described sound signal amplifying circuit carries out amplification process to the voice signal received; Described second amplifying circuit amplifies the signal after processing for receiving sound signal amplifying circuit and again carries out amplification process; Described current rectifying and wave filtering circuit, for receiving the signal of second amplifying circuit output and carrying out rectifying and wave-filtering process; Described drive circuit produces the signal of drive circuit break-make by the signal of current rectifying and wave filtering circuit process.
2. circuit is connected in acoustic control according to claim 1, and it is characterized in that: described drive circuit is connected with relay, described connecting and disconnecting of the circuit is realized by the break-make of relay R L1.
3. circuit is connected in acoustic control according to claim 1, it is characterized in that: described sound detection circuit MIC adopts moving coil type microphone or Electret condenser microphone.
4. circuit is connected in acoustic control according to claim 1, it is characterized in that: described sound detection circuit is connected with power circuit by build-out resistor R1.
5. circuit is connected in acoustic control according to claim 1, it is characterized in that: described sound signal amplifying circuit comprises the first triode BC109C, the second triode BC109C and gain resistor;
Described first triode BC109C base stage is connected with sound detection circuit by electric capacity, described first triode BC109C emitter is connected to ground by gain resistor, described gain resistor adjustable side is connected to ground by series capacitance, described first triode BC109C collector electrode is connected with the second triode BC109C base stage, the emitter of described second triode BC109C is connected with second amplifying circuit, the emitter of described second triode BC109C is by grounding through resistance, and described resistance two ends are parallel with shunt capacitance.
6. circuit is connected in acoustic control according to claim 1, it is characterized in that: described second amplifying circuit comprises the 3rd triode BC182B, described 3rd triode BC182B grounded emitter, collector electrode is connected with drive circuit by current rectifying and wave filtering circuit, the 3rd triode BC182B collector electrode output AC voice signal.
7. circuit is connected in acoustic control according to claim 1, it is characterized in that: described current rectifying and wave filtering circuit comprises the first diode 1N4148, the second diode 1N4148, filter capacitor; Described drive circuit comprises driving triode BC212B,
Described first diode 1N4148 connects in the base stage of driving triode in the driving circuit, described second diode 1N4148 one end is connected with the first diode 1N4148, the other end is connected with power circuit, and described filter capacitor is connected between power circuit and the base stage driving triode.
8. circuit is connected in acoustic control according to claim 1, it is characterized in that: described drive circuit carrys out the break-make of control relay RL1 by controlling triode ON and cut-off.
9. circuit is connected in acoustic control according to claim 1, and it is characterized in that: also comprise LED light, described LED light is parallel to the operating state that relay two ends are used to indicate relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420773496.1U CN204362021U (en) | 2014-12-09 | 2014-12-09 | Circuit is connected in acoustic control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420773496.1U CN204362021U (en) | 2014-12-09 | 2014-12-09 | Circuit is connected in acoustic control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204362021U true CN204362021U (en) | 2015-05-27 |
Family
ID=53263466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420773496.1U Expired - Fee Related CN204362021U (en) | 2014-12-09 | 2014-12-09 | Circuit is connected in acoustic control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204362021U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108508252A (en) * | 2017-02-24 | 2018-09-07 | 长沙英雁电子有限公司 | With detection and drive in the voltage sensor of one |
-
2014
- 2014-12-09 CN CN201420773496.1U patent/CN204362021U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108508252A (en) * | 2017-02-24 | 2018-09-07 | 长沙英雁电子有限公司 | With detection and drive in the voltage sensor of one |
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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 |