CN204929344U - Acoustic control circuit - Google Patents
Acoustic control circuit Download PDFInfo
- Publication number
- CN204929344U CN204929344U CN201520635432.XU CN201520635432U CN204929344U CN 204929344 U CN204929344 U CN 204929344U CN 201520635432 U CN201520635432 U CN 201520635432U CN 204929344 U CN204929344 U CN 204929344U
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- China
- Prior art keywords
- resistance
- triode
- electric capacity
- diode
- relay
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model discloses an acoustic control circuit, including electret BM, resistance R1, resistance R2, electric capacity C1, diode D1, relay K and triode VT1, it is anodal that diode D2 is connected respectively to relay K coil one end, resistance R5, diode D1 negative pole, electric capacity C4 and power VCC, diode D2 negative pole is connecting resistance R1 respectively, resistance R2, resistance R3 and resistance R4, electric capacity C2 is connected respectively to the resistance R4 other end, triode VT2 base and electric capacity C3, it is anodal that diode D1 is connected respectively to the electric capacity C3 other end, the relay K coil other end and triode VT3 collecting electrode. The utility model discloses acoustic control circuit, circuit structure is simple, does not adopt any chip element control, and the interference killing feature is strong, and it just can the continued control electric quantity after accomplishing once to need behind the bright lamp moreover to charge at electric capacity C3, prevents effectively that relay K from frequently moving, practices thrift the electric energy.
Description
Technical field
The utility model relates to a kind of control circuit, specifically a kind of sound control circuit.
Background technology
Various delay illuminating lamp has all been installed on oneself doorway with the people living building in the corridor of a lot of public place, as: sound control delay switch practicality is got up really convenient, the object of energy savings can be reached, existing acoustic control lamp adopts NE555 to control mostly, control circuit complex structure, cost is high, and reliability is low.
Utility model content
The purpose of this utility model is to provide a kind of sound control circuit, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of sound control circuit, comprises electret BM, resistance R1, resistance R2, electric capacity C1, diode D1, relay K and triode VT1, described relay K coil one end connects diode D2 positive pole respectively, resistance R5, diode D1 negative pole, electric capacity C4 and power supply VCC, diode D2 negative pole is contact resistance R1 respectively, resistance R2, resistance R3 and resistance R4, the resistance R4 other end connects electric capacity C2 respectively, triode VT2 base stage and electric capacity C3, the electric capacity C3 other end connects diode D1 positive pole respectively, the relay K coil other end and triode VT3 collector electrode, triode VT3 base stage is the contact resistance R5 other end and triode VT2 collector electrode respectively, and triode VT2 emitter connects the electric capacity C4 other end respectively, triode VT3 emitter, triode VT1 emitter and electret BM, triode VT1 collector electrode connects the electric capacity C2 other end and the resistance R3 other end respectively, triode VT1 base stage is the contact resistance R2 other end and electric capacity C1, the electric capacity C1 other end contact resistance R1 other end and the electret BM other end respectively respectively.
As the utility model further scheme: described power supply VCC voltage is 6V.
Compared with prior art, the beneficial effects of the utility model are: the utility model sound control circuit, circuit structure is simple, any chip component is not adopted to control, antijamming capability is strong, and just can need continue after a bright light to control electricity after electric capacity C3 charging complete, effectively prevent relay K frequent movement, saves energy.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of sound control circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of sound control circuit, comprises electret BM, resistance R1, resistance R2, electric capacity C1, diode D1, relay K and triode VT1, relay K coil one end connects diode D2 positive pole respectively, resistance R5, diode D1 negative pole, electric capacity C4 and power supply VCC, diode D2 negative pole is contact resistance R1 respectively, resistance R2, resistance R3 and resistance R4, the resistance R4 other end connects electric capacity C2 respectively, triode VT2 base stage and electric capacity C3, the electric capacity C3 other end connects diode D1 positive pole respectively, the relay K coil other end and triode VT3 collector electrode, triode VT3 base stage is the contact resistance R5 other end and triode VT2 collector electrode respectively, and triode VT2 emitter connects the electric capacity C4 other end respectively, triode VT3 emitter, triode VT1 emitter and electret BM, triode VT1 collector electrode connects the electric capacity C2 other end and the resistance R3 other end respectively, triode VT1 base stage is the contact resistance R2 other end and electric capacity C1, the electric capacity C1 other end contact resistance R1 other end and the electret BM other end respectively respectively.
Power supply VCC voltage is 6V.
Operation principle of the present utility model is: refer to Fig. 1, and the electret BM in circuit can change the signal of telecommunication into voice signal, is removed the control circuit triggered below by the amplification of triode VT1.
Triode VT2, VT3 and peripheral cell composition monostable circuit thereof, resistance R4 is that triode VT2 provides base current, the base current of triode VT3 is then obtain from the collector resistance R5 of triode VT2, be direct-coupled between triode VT2 collector electrode and triode VT3 base stage, being coupled between triode VT3 collector electrode with triode VT2 base stage, has been come by electric capacity C3.
The feature of monostable circuit is that it only has a stable state, circuit is not when having signal to input, select rational R4 resistance, triode VT2 is made to be stabilized in saturation condition, now its collector voltage is about below 0.3V, triode VT3 is made to be stabilized in cut-off state like this, the stable state of monostable circuit that Here it is.
When the negative pulse of in signal arrives the base stage of triode VT2 by C2, triode VT2 starts trend cut-off, its collector current reduces, collector voltage raises, through direct-coupling, the base voltage of triode VT3 is raised, triode VT3 starts conducting, its collector voltage declines, coupling through electric capacity C3 makes again the base voltage of triode VT2 decline (although at this moment negative pulse no longer exists) further, form a positive feedback, reach a new state very soon.Now triode VT2 ends, triode VT3 saturation conduction, the temporary steady state phenomena of monostable circuit that Here it is.
The temporary stable state of monostable circuit is unendurable, between temporary steady state period, electric capacity C3 is discharged by resistance R4, along with the base voltage carrying out triode VT2 of electric discharge raises gradually, when it reaches more than 0.5V, triode VT2 starts conducting, and positive feedback phenomenon occurs again, whole circuit gets back to again VT2 saturation conduction very soon, the stable state of VT3 cut-off.Electric capacity C3 determines holding time of the temporary stable state of circuit by the discharge process of resistance R4.According to calculating, this time t=0.7*R4*C3.The parameter of resistance R4 or electric capacity C3 can be changed according to this formula, extend or shorten the time of delay of circuit.
After circuit restoration, electric capacity C3 is charged by the emitter junction of relay K and triode VT2, and after charging complete, circuit just can receive triggering next time.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (2)
1. a sound control circuit, comprises electret BM, resistance R1, resistance R2, electric capacity C1, diode D1, relay K and triode VT1, is characterized in that, described relay K coil one end connects diode D2 positive pole respectively, resistance R5, diode D1 negative pole, electric capacity C4 and power supply VCC, diode D2 negative pole is contact resistance R1 respectively, resistance R2, resistance R3 and resistance R4, the resistance R4 other end connects electric capacity C2 respectively, triode VT2 base stage and electric capacity C3, the electric capacity C3 other end connects diode D1 positive pole respectively, the relay K coil other end and triode VT3 collector electrode, triode VT3 base stage is the contact resistance R5 other end and triode VT2 collector electrode respectively, and triode VT2 emitter connects the electric capacity C4 other end respectively, triode VT3 emitter, triode VT1 emitter and electret BM, triode VT1 collector electrode connects the electric capacity C2 other end and the resistance R3 other end respectively, triode VT1 base stage is the contact resistance R2 other end and electric capacity C1, the electric capacity C1 other end contact resistance R1 other end and the electret BM other end respectively respectively.
2. sound control circuit according to claim 1, is characterized in that, described power supply VCC voltage is 6V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520635432.XU CN204929344U (en) | 2015-08-22 | 2015-08-22 | Acoustic control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520635432.XU CN204929344U (en) | 2015-08-22 | 2015-08-22 | Acoustic control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204929344U true CN204929344U (en) | 2015-12-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520635432.XU Expired - Fee Related CN204929344U (en) | 2015-08-22 | 2015-08-22 | Acoustic control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204929344U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108187112A (en) * | 2018-02-10 | 2018-06-22 | 杭州行香环保科技有限公司 | Acoustic control aroma diffusing machine |
-
2015
- 2015-08-22 CN CN201520635432.XU patent/CN204929344U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108187112A (en) * | 2018-02-10 | 2018-06-22 | 杭州行香环保科技有限公司 | Acoustic control aroma diffusing machine |
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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: 20151230 Termination date: 20160822 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |