CN205647935U - Audio signal output device - Google Patents
Audio signal output device Download PDFInfo
- Publication number
- CN205647935U CN205647935U CN201620418508.8U CN201620418508U CN205647935U CN 205647935 U CN205647935 U CN 205647935U CN 201620418508 U CN201620418508 U CN 201620418508U CN 205647935 U CN205647935 U CN 205647935U
- Authority
- CN
- China
- Prior art keywords
- resistance
- electric capacity
- connects
- inductance
- diode
- 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
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses an audio signal output device aims at providing one kind and imitates the audio signal output device who improves audio output stability and intensity, has solved the problem of the easy decay of audio signal, and its technical scheme main points adopt dual return circuit amplification effect's improvement signal intensity's effect.
Description
Technical field
This utility model relates to technical field of communication equipment, particularly to audio signal output device.
Background technology
In existing communication equipment, many places relate to audio signal output, and on the mobile terminal of telecommunication or user client device, the most all there is audio output device, and in existing audio signal output device, its circuit structure is complicated, and signal is owing to easily decaying during remote transmission, so that audio signal can not stably export, to this, need existing audio signal output device is further improved.
Utility model content
The deficiency existed for prior art, the purpose of this utility model is to provide a kind of audio signal output device being effectively improved audio frequency output stability and intensity.
Above-mentioned technical purpose of the present utility model has the technical scheme that a kind of audio signal output device, including power module, magnetic antenna, inductance L2, inductance L3, PNP triode Q1, diode D1, diode D2, electric capacity C2, electric capacity C3, resistance R1, speaker B；
The positive pole of power module connects electric capacity C2 one end, the emitter stage of PNP triode Q1, the anode of diode D1；
The other end of electric capacity C2 connects inductance L2 one end, diode D2 negative electrode, resistance R1 one end；
The other end of inductance L2 connects the base stage of PNP triode Q1；The colelctor electrode of PNP triode Q1 connects inductance L3 one end, electric capacity C3 one end；The other end of electric capacity C3 connects the negative electrode of diode D1, the anode of diode D2；The other end of inductance L3 connects speaker B one end；The other end of speaker B connects the resistance R1 other end, power module negative pole；Magnetic antenna couples with inductance L2.
By such scheme, after magnetic antenna receives radio wave, sense on inductance L2.The high-frequency signal at L2 two ends, one end is directly connected to PNP triode Q1 base stage, and PNP triode Q1 emitter stage is delivered to by electric capacity C2 in one end, carries out High frequency amplification.High-frequency signal after amplification is exported by PNP triode Q1 colelctor electrode.Now You Liangtiao road lies ahead, and one is by electric capacity C3, and one is by inductance L3, and owing to high frequency electric is easy to by electric capacity C3, very big by inductance L3 resistance, high-frequency signal has just been delivered to diode D1 from C3 and formed detecting circuit.Signal after diode D1 detection becomes audio signal.Audio signal is sent to again PNP triode Q1 and amplifies, and the audio signal after amplification exports from PNP triode Q1 colelctor electrode again.Audio signal is passed through highly difficult from electric capacity C3, thus can only be smoothly through inductance L3 and arrive speaker B, makes speaker B send sound.Such PNP triode Q1 has successively played twice amplification, makes the output sensitivity of audio signal be greatly improved.
Can be preferably as concrete scheme of the present utility model: described magnetic antenna includes a node ground connection of inductance L1 parallel with one another and electric capacity C1, described inductance L1 and electric capacity C1, described inductance L1 and inductance L2 Mutual Inductance Coupling.
By such scheme, through being tuned selecting to the coupling of electric capacity C1 and inductance L1, the signal of suitable wireless wave band can be selected.
Can be preferably as concrete scheme of the present utility model: described electric capacity C1 is adjustable condenser.
By such scheme, the capacitance of capacitor can be changed by adjustable condenser, it is simple to the reception of regulation wireless signal.
Can be preferably as concrete scheme of the present utility model: described power module is battery.
By such scheme, power supply supply is convenient quickly, simplifies circuit structure.
Can be preferably as concrete scheme of the present utility model: described power module includes solar panels, electric capacity C11, electric capacity C12, resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, NPN audion Q2, NPN audion Q3, stabilivolt D3, diode D4, has the first winding Np and the second winding Nb and the transformator of tertiary winding Ns；
The positive pole of described solar panels connects electric capacity C11 one end, resistance R11 one end, resistance R12 one end, the first winding Np positive pole；
The other end of resistance R11 connects the base stage of NPN audion Q2, one end of resistance R13, the colelctor electrode of NPN audion Q3；
The other end of resistance R12 connects the negative pole of the first winding Np, the colelctor electrode of NPN audion Q2；
The other end of resistance R13 connects electric capacity C12 one end；The other end of electric capacity C12 connects the positive pole of the second winding Nb；
The base stage of NPN audion Q3 connects one end of resistance R14, the anode of stabilivolt D3；
The negative pole of the second winding Nb connects transmitting collection, the other end of resistance R14, the earth terminal of the negative pole of solar panels, the other end of electric capacity C11, NPN audion；
The positive pole of tertiary winding Ns is in order to provide power cathode end, and the negative pole of tertiary winding Ns connects the anode of diode D4, and the negative electrode of diode D4 is in order to provide power positive end；Power positive end and power cathode end are also in series with resistance R15 and resistance R16, the negative electrode of the Node connectedness stabilivolt D3 of resistance R15 and resistance R16.
By such scheme, make full use of solar energy, more environmentally-friendly energy-conservation, utilize solar energy will above-mentioned circuit be powered, do not pollute, service life is longer.
Can be preferably as concrete scheme of the present utility model: described power cathode end and power positive end connect electric capacity C13.
By such scheme, improve the stability of electric power output, the ripple on some electric currents can be filtered so that electric current output is more stable.
In sum, this utility model has the advantages that the stability simplifying circuit structure, improving audio signal output, relative energy-saving environmental protection.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the present embodiment one；
Fig. 2 is that the signal of the present embodiment one flows to schematic diagram；
Fig. 3 is the circuit theory diagrams of the power module of the present embodiment two.
In figure 1, magnetic antenna；2, battery；3, solar panels；s1, high-frequency signal one；s2, high-frequency signal two；s3, audio signal.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail.
Embodiment one:
As shown in Figure 1-2, a kind of audio signal output device, including power module, magnetic antenna 1, inductance L2, inductance L3, PNP triode Q1, diode D1, diode D2, electric capacity C2, electric capacity C3, resistance R1, speaker B；The positive pole of power module connects electric capacity C2 one end, the emitter stage of PNP triode Q1, the anode of diode D1；The other end of electric capacity C2 connects inductance L2 one end, diode D2 negative electrode, resistance R1 one end；The other end of inductance L2 connects the base stage of PNP triode Q1；The colelctor electrode of PNP triode Q1 connects inductance L3 one end, electric capacity C3 one end；The other end of electric capacity C3 connects the negative electrode of diode D1, the anode of diode D2；The other end of inductance L3 connects speaker B one end；The other end of speaker B connects the resistance R1 other end, power module negative pole；Magnetic antenna 1 couples with inductance L2.Magnetic antenna 1 includes a node ground connection of inductance L1 parallel with one another and electric capacity C1, inductance L1 and electric capacity C1, inductance L1 and inductance L2 Mutual Inductance Coupling.Electric capacity C1 is adjustable condenser.
See Fig. 2, below to above-mentioned audio signal s3Output device is further elaborated: after magnetic antenna 1 receives radio wave, senses on inductance L2.The high-frequency signal at L2 two ends, one end is directly connected to PNP triode Q1 base stage, and PNP triode Q1 emitter stage is delivered to by electric capacity C2 in one end, carries out High frequency amplification.High-frequency signal after amplification is exported by PNP triode Q1 colelctor electrode.Now You Liangtiao road lies ahead, and one is by electric capacity C3, and one is by inductance L3, and owing to high frequency electric is easy to by electric capacity C3, very big by inductance L3 resistance, high-frequency signal has just been delivered to diode D1 from C3 and formed detecting circuit.Signal after diode D1 detection becomes audio signal s3.Audio signal s3It is sent to again PNP triode Q1 amplify, audio signal s after amplification3Export from PNP triode Q1 colelctor electrode again.Audio signal s3From electric capacity C3 by highly difficult, thus inductance L3 can only be smoothly through and arrive speaker B, make speaker B send sound.Such PNP triode Q1 has successively played twice amplification, makes audio signal s3Output sensitivity be greatly improved.
Fig. 2 high frequency signal one s1It is amplified through audion Q1 by electric capacity C2, high-frequency signal one s1High-frequency signal two s is become after amplifying2, and having again passed by audion Q1 amplifies, additionally by audio signal s after diode D1 detection to have the signal circuit of Fig. 2 can be seen that3Export on speaker B.
Through being tuned selecting to the coupling of electric capacity C1 and inductance L1, the signal of suitable wireless wave band can be selected.The capacitance of capacitor can be changed by adjustable condenser, it is simple to the reception of regulation wireless signal.
Can be preferably as concrete scheme of the present utility model: power module is battery 2, the output voltage range of battery 2 can be 3-9V.By such scheme, power supply supply is convenient quickly, simplifies circuit structure.
Embodiment two:
Difference in embodiment one is that power module is not to use battery 2, power module uses circuit as shown in Figure 3, and power module includes solar panels 3, electric capacity C11, electric capacity C12, resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, NPN audion Q2, NPN audion Q3, stabilivolt D3, diode D4, has the first winding Np and the second winding Nb and the transformator of tertiary winding Ns；The positive pole of solar panels 3 connects electric capacity C11 one end, resistance R11 one end, resistance R12 one end, the first winding Np positive pole；The other end of resistance R11 connects the base stage of NPN audion Q2, one end of resistance R13, the colelctor electrode of NPN audion Q3；The other end of resistance R12 connects the negative pole of the first winding Np, the colelctor electrode of NPN audion Q2；The other end of resistance R13 connects electric capacity C12 one end；The other end of electric capacity C12 connects the positive pole of the second winding Nb；The base stage of NPN audion Q3 connects one end of resistance R14, the anode of stabilivolt D3；The negative pole of the second winding Nb connects transmitting collection, the other end of resistance R14, the earth terminal of the negative pole of solar panels 3, the other end of electric capacity C11, NPN audion；The positive pole of tertiary winding Ns is in order to provide power cathode end, and the negative pole of tertiary winding Ns connects the anode of diode D4, and the negative electrode of diode D4 is in order to provide power positive end；Power positive end and power cathode end are also in series with resistance R15 and resistance R16, the negative electrode of the Node connectedness stabilivolt D3 of resistance R15 and resistance R16；Power cathode end and power positive end connect electric capacity C13.
Being further elaborated foregoing circuit: audion Q2 is Switching Power Supply pipe, it and transformator, R11, R13, C12 etc. form self-excited oscillation circuit.After solar panels 3 input power, electric current is activated resistance R1 and flows to the base stage of audion Q2, makes audion Q2 turn on.
After audion Q2 conducting, transformator the first winding Np is just plus input direct voltage, its collector current Ic linear increase in Np, the induced voltage that lower end is negative is rectified in feedback coil Nb generation, making audion Q2 obtain base stage is just, launches extremely negative positive feedback voltage, and this voltage injects base current through C12, R13 to audion Q2 makes the collector current of audion Q2 increase further, positive feedback produces avalanche process, makes audion Q2 saturation conduction.During audion Q2 saturation conduction, transformator stores magnetic energy by primary coil Np.
Meanwhile, induced voltage charges to C12, along with increasing of C12 charging voltage, audion Q2 base potential gradually step-down, when the base current of audion Q2 change can not meet its continue saturated time, audion Q2 exits entrance amplification region, saturation region.
After audion Q2 enters magnifying state, its collector current is declined by the maximum before magnifying state, produce upper end at the second winding Nb and bear lower proper induced voltage, audion Q2 base current is made to reduce, its collector current reduces therewith, positive feedback occurs that avalanche process, audion Q2 end rapidly again.
After audion Q2 cut-off, the energy that transformator stores is supplied to load, and proper voltage is born after diode VD4 rectifying and wave-filtering in the lower end that tertiary winding Ns produces, and obtains DC voltage and charge to battery of mobile phone 2 on C13.
When audion Q2 ends, direct current supply defeated people voltage and Nb sensing lower end bear proper voltage again through R11, R13 to C12 reverse charging, gradually step up audion Q2 base potential so that it is again turn on, upset reaches saturation again, and circuit repeats vibration like this and goes down.
R15, R16, D3, audion Q3 etc. form pressure limiting circuit, and to protect battery 2 not to be overcharged, it is 4.2V that its charging limits voltage.In the charging process of battery 2, battery 2 voltage is gradually increasing, when charging voltage is more than 4.2V, after R15, R16 dividing potential drop, Zener diode D3 begins to turn on, audion Q3 is made to turn on, the shunting action of audion Q3 reduces the base current of audion Q2, thus reduces the collector current Ic of audion Q2, has reached to limit the effect of output voltage.At this moment circuit stopped the large current charge to battery 2, with small area analysis, the voltage of battery 2 is maintained 4.2V.
Make full use of solar energy, more environmentally-friendly energy-conservation, utilize solar energy will above-mentioned circuit be powered, do not pollute, service life is longer.Improve the stability of electric power output, the ripple on some electric currents can be filtered so that electric current output is more stable.
This specific embodiment is only to explanation of the present utility model; it is not to restriction of the present utility model; the present embodiment can be made after reading this specification by those skilled in the art as required does not has the amendment of creative contribution, but as long as all being protected by Patent Law in right of the present utility model.
Claims (6)
1. an audio signal output device, it is characterised in that: include power module, magnetic antenna, inductance L2, inductance L3, PNP triode Q1, diode D1, diode D2, electric capacity C2, electric capacity C3, resistance R1, speaker B；
The positive pole of power module connects electric capacity C2 one end, the emitter stage of PNP triode Q1, the anode of diode D1；
The other end of electric capacity C2 connects inductance L2 one end, diode D2 negative electrode, resistance R1 one end；
The other end of inductance L2 connects the base stage of PNP triode Q1；The colelctor electrode of PNP triode Q1 connects inductance L3 one end, electric capacity C3 one end；The other end of electric capacity C3 connects the negative electrode of diode D1, the anode of diode D2；The other end of inductance L3 connects speaker B one end；The other end of speaker B connects the resistance R1 other end, power module negative pole；Magnetic antenna couples with inductance L2.
Audio signal output device the most according to claim 1, it is characterised in that: described magnetic antenna includes a node ground connection of inductance L1 parallel with one another and electric capacity C1, described inductance L1 and electric capacity C1, described inductance L1 and inductance L2 Mutual Inductance Coupling.
Audio signal output device the most according to claim 2, it is characterised in that: described electric capacity C1 is adjustable condenser.
4. according to the audio signal output device described in claim 1 or 2 or 3, it is characterised in that: described power module is battery.
5. according to the audio signal output device described in claim 1 or 2 or 3, it is characterised in that: described power module includes solar panels, electric capacity C11, electric capacity C12, resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, NPN audion Q2, NPN audion Q3, stabilivolt D3, diode D4, has the first winding Np and the second winding Nb and the transformator of tertiary winding Ns；
The positive pole of described solar panels connects electric capacity C11 one end, resistance R11 one end, resistance R12 one end, the first winding Np positive pole；
The other end of resistance R11 connects the base stage of NPN audion Q2, one end of resistance R13, the colelctor electrode of NPN audion Q3；
The other end of resistance R12 connects the negative pole of the first winding Np, the colelctor electrode of NPN audion Q2；
The other end of resistance R13 connects electric capacity C12 one end；The other end of electric capacity C12 connects the positive pole of the second winding Nb；
The base stage of NPN audion Q3 connects one end of resistance R14, the anode of stabilivolt D3；
The negative pole of the second winding Nb connects transmitting collection, the other end of resistance R14, the earth terminal of the negative pole of solar panels, the other end of electric capacity C11, NPN audion；
The positive pole of tertiary winding Ns is in order to provide power cathode end, and the negative pole of tertiary winding Ns connects the anode of diode D4, and the negative electrode of diode D4 is in order to provide power positive end；Power positive end and power cathode end are also in series with resistance R15 and resistance R16, the negative electrode of the Node connectedness stabilivolt D3 of resistance R15 and resistance R16.
Audio signal output device the most according to claim 5, it is characterised in that: described power cathode end and power positive end connect electric capacity C13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620418508.8U CN205647935U (en) | 2016-05-10 | 2016-05-10 | Audio signal output device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620418508.8U CN205647935U (en) | 2016-05-10 | 2016-05-10 | Audio signal output device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205647935U true CN205647935U (en) | 2016-10-12 |
Family
ID=57058441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620418508.8U Expired - Fee Related CN205647935U (en) | 2016-05-10 | 2016-05-10 | Audio signal output device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205647935U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106542008A (en) * | 2016-12-08 | 2017-03-29 | 安溪县中磊设备制造有限公司 | A kind of intelligence Handling device for loading oil exploration equipment |
-
2016
- 2016-05-10 CN CN201620418508.8U patent/CN205647935U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106542008A (en) * | 2016-12-08 | 2017-03-29 | 安溪县中磊设备制造有限公司 | A kind of intelligence Handling device for loading oil exploration equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205029402U (en) | Wireless charging system of microwave based on array antenna | |
| CN103730932A (en) | Wireless charging system | |
| CN205385307U (en) | A wireless radio frequency energy charging device for cell -phone | |
| CN207150798U (en) | Stereo set | |
| CN205647935U (en) | Audio signal output device | |
| CN201773459U (en) | Anti-theft device for storage battery in mobile communication base station | |
| CN106787119A (en) | Electronic bicycle of solar energy wireless charging system and method | |
| CN203707819U (en) | Wireless charging system | |
| CN109217446B (en) | Piezoelectric vibration energy acquisition circuit | |
| CN103259295A (en) | Portable electronic device with solar charging function | |
| CN203039853U (en) | Charging device and wireless earphone | |
| CN209861161U (en) | Portable megaphone | |
| CN210225835U (en) | High-power solar lamp control circuit based on microwave human body induction | |
| CN204103611U (en) | A kind of radio frequency energy collector | |
| CN202696583U (en) | Multi-functional minitype frequency modulation emitter | |
| CN110535363A (en) | A kind of radio frequency rectifier based on CMOS tube | |
| CN204810142U (en) | High frequency switching power supply's anti -jamming circuit | |
| CN205249188U (en) | Outdoor solar energy frequency modulation wireless transmitter | |
| CN206060331U (en) | A kind of portable wireless communication emitter | |
| CN205509637U (en) | Solar charging circuit of remote controller | |
| CN205248894U (en) | Multi -functional charging circuit of solar energy | |
| CN203166882U (en) | Novel long-distance transmitter | |
| CN203522280U (en) | Mobile phone charger with utilization of solar energy | |
| CN209675972U (en) | The quick-charging circuit of lithium battery energy storage battery power supply | |
| CN104184339B (en) | Trigger booster circuit |
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: 20161012 Termination date: 20190510 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |