CN205305103U - Voice signal amplification control system - Google Patents
Voice signal amplification control system Download PDFInfo
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- CN205305103U CN205305103U CN201521127717.9U CN201521127717U CN205305103U CN 205305103 U CN205305103 U CN 205305103U CN 201521127717 U CN201521127717 U CN 201521127717U CN 205305103 U CN205305103 U CN 205305103U
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Abstract
The utility model discloses a voice signal amplification control system, including resistance R1, electric capacity C1, potentiometre RP1, microphone BM, triode VT1 summation potential ware RP2, electric capacity C1 one end ground connection, the electric capacity C1 other end is connecting resistance R1 respectively, resistance R2, resistance R4, resistance R6 and power VCC, microphone BM summation potential ware RP1 one end is connected respectively to the resistance R1 other end, electric capacity C6 is connected to potentiometre RP1 gleitbretter, the electric capacity C6 other end is the connecting resistance R2 other end respectively, resistance R3 and triode VT1 base, triode VT1 collecting electrode is the connecting resistance R4 other end and electric capacity C3 respectively, triode VT1 projecting pole connecting resistance R5. The utility model discloses voice signal amplification control system adopts the control of triode and resistor -Capacitor unit, and circuit structure is simple, and is with low costs, small, owing to use the resistor -Capacitor unit less, and energy -saving power.
Description
Technical field
This utility model relates to a kind of control system, specifically a kind of acoustical signal amplification control system.
Background technology
Sound signal amplifier has had the history in a soon century, and first application of discharge-tube amplifier the earliest is exactly sound signal amplifier. But until the present moment, it is also being continuously updated, is developing, is advancing. The audition being primarily due to the mankind is the considerable one in various sensation, is also most basic one. In order to meet its needs, relevant sound signal amplifier will constantly be improved.
Sound signal amplifying circuit on existing a lot of electronic message unit all adopts operational amplifier control, but operation amplifier exists the problems such as volume is relatively big, electric energy loss is higher, and miniaturization and energy-saving to present equipment are very unfavorable.
Utility model content
The purpose of this utility model is in that to provide a kind of acoustical signal amplification control system, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, this utility model provides following technical scheme:
A kind of acoustical signal amplification control system, including resistance R1, electric capacity C1, potentiometer RP1, mike BM, audion VT1 and potentiometer RP2, described electric capacity C1 one end ground connection, the electric capacity C1 other end connects resistance R1 respectively, resistance R2, resistance R4, resistance R6 and power supply VCC, the resistance R1 other end connects mike BM and potentiometer RP1 one end respectively, and potentiometer RP1 slide plate connects electric capacity C6, and the electric capacity C6 other end connects the resistance R2 other end respectively, resistance R3 and audion VT1 base stage, audion VT1 colelctor electrode connects the resistance R4 other end and electric capacity C3 respectively, and audion VT1 emitter stage connects resistance R5, and the electric capacity C3 other end is connecting triode VT2 base stage respectively, electric capacity C4, potentiometer RP2 one end and potentiometer RP2 slide plate, audion VT2 emitter stage connects resistance R7, and audion VT2 colelctor electrode connects the resistance R6 other end and audion VT3 base stage respectively, and audion VT3 emitter stage connects the potentiometer RP2 other end respectively, resistance R8 and electric capacity C5, the electric capacity C5 other end connects output end vo, and the resistance R8 other end connects the resistance R7 other end respectively, the electric capacity C4 other end, the resistance R5 other end, the resistance R3 other end, the potentiometer RP1 other end and the mike BM other end.
As this utility model further scheme: described power supply VCC voltage is 6V.
Compared with prior art, the beneficial effects of the utility model are: this utility model acoustical signal amplification control system, adopt audion and Resistor-Capacitor Unit to control, and circuit structure is simple, and cost is low, and volume is little, owing to using Resistor-Capacitor Unit less, and energy saving.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of acoustical signal amplification control system.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments. Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
Referring to Fig. 1, in this utility model embodiment, a kind of acoustical signal amplification control system, including resistance R1, electric capacity C1, potentiometer RP1, mike BM, audion VT1 and potentiometer RP2, described electric capacity C1 one end ground connection, the electric capacity C1 other end connects resistance R1 respectively, resistance R2, resistance R4, resistance R6 and power supply VCC, the resistance R1 other end connects mike BM and potentiometer RP1 one end respectively, and potentiometer RP1 slide plate connects electric capacity C6, and the electric capacity C6 other end connects the resistance R2 other end respectively, resistance R3 and audion VT1 base stage, audion VT1 colelctor electrode connects the resistance R4 other end and electric capacity C3 respectively, and audion VT1 emitter stage connects resistance R5, and the electric capacity C3 other end is connecting triode VT2 base stage respectively, electric capacity C4, potentiometer RP2 one end and potentiometer RP2 slide plate, audion VT2 emitter stage connects resistance R7, and audion VT2 colelctor electrode connects the resistance R6 other end and audion VT3 base stage respectively, and audion VT3 emitter stage connects the potentiometer RP2 other end respectively, resistance R8 and electric capacity C5, the electric capacity C5 other end connects output end vo, and the resistance R8 other end connects the resistance R7 other end respectively, the electric capacity C4 other end, the resistance R5 other end, the resistance R3 other end, the potentiometer RP1 other end and the mike BM other end, described power supply VCC voltage is 6V.
Operation principle of the present utility model is: refer to Fig. 1, BM converts tones into audio signal, audio signal is by after volume potentiometer RP1 adjusting size, audion VT1 base stage is delivered to again through C6, audio signal exports through electric capacity C3 from colelctor electrode after VT1 amplifies, and delivers to audion VT2 base stage, delivers to again VT3 base stage from VT2 colelctor electrode after amplification, export from VT3 emitter stage after amplification, then through the audio signal that electric capacity C5 output is amplified; Power supply VCC provides power supply for whole circuit, and VT2 and VT3 obtains power supply can turn on entrance magnifying state, and potentiometer RP2 is feedback resistance, it is possible not only to provide electric current for VT2 base stage, can also stablizing the quiescent point of VT2 and VT3, C4 is shunt capacitance, it is possible to improve the gain amplifier of VT2.
It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and when without departing substantially from spirit of the present utility model or basic feature, it is possible to realize this utility model in other specific forms. Therefore, no matter from which point, embodiment all should be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than described above, it is intended that all changes in the implication of the equivalency dropping on claim and scope included in this utility model.Any accompanying drawing labelling in claim should be considered as the claim that restriction is involved.
In addition, it is to be understood that, although this specification is been described by according to embodiment, but not each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should be made as a whole by those skilled in the art, and the technical scheme in each embodiment through appropriately combined, can also form other embodiments that it will be appreciated by those skilled in the art that.
Claims (2)
1. an acoustical signal amplification control system, including resistance R1, electric capacity C1, potentiometer RP1, mike BM, audion VT1 and potentiometer RP2, it is characterised in that described electric capacity C1 one end ground connection, the electric capacity C1 other end connects resistance R1 respectively, resistance R2, resistance R4, resistance R6 and power supply VCC, the resistance R1 other end connects mike BM and potentiometer RP1 one end respectively, and potentiometer RP1 slide plate connects electric capacity C6, and the electric capacity C6 other end connects the resistance R2 other end respectively, resistance R3 and audion VT1 base stage, audion VT1 colelctor electrode connects the resistance R4 other end and electric capacity C3 respectively, and audion VT1 emitter stage connects resistance R5, and the electric capacity C3 other end is connecting triode VT2 base stage respectively, electric capacity C4, potentiometer RP2 one end and potentiometer RP2 slide plate, audion VT2 emitter stage connects resistance R7, and audion VT2 colelctor electrode connects the resistance R6 other end and audion VT3 base stage respectively, and audion VT3 emitter stage connects the potentiometer RP2 other end respectively, resistance R8 and electric capacity C5, the electric capacity C5 other end connects output end vo, and the resistance R8 other end connects the resistance R7 other end respectively, the electric capacity C4 other end, the resistance R5 other end, the resistance R3 other end, the potentiometer RP1 other end and the mike BM other end.
2. acoustical signal amplification control system according to claim 1, it is characterised in that described power supply VCC voltage is 6V.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201521127717.9U CN205305103U (en) | 2015-12-29 | 2015-12-29 | Voice signal amplification control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201521127717.9U CN205305103U (en) | 2015-12-29 | 2015-12-29 | Voice signal amplification control system |
Publications (1)
Publication Number | Publication Date |
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CN205305103U true CN205305103U (en) | 2016-06-08 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201521127717.9U Expired - Fee Related CN205305103U (en) | 2015-12-29 | 2015-12-29 | Voice signal amplification control system |
Country Status (1)
Country | Link |
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CN (1) | CN205305103U (en) |
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2015
- 2015-12-29 CN CN201521127717.9U patent/CN205305103U/en not_active Expired - Fee Related
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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: 20160608 Termination date: 20161229 |
|
CF01 | Termination of patent right due to non-payment of annual fee |