CN2219571Y - Active mechanoelectric-servo-speaker - Google Patents
Active mechanoelectric-servo-speaker Download PDFInfo
- Publication number
- CN2219571Y CN2219571Y CN 94218511 CN94218511U CN2219571Y CN 2219571 Y CN2219571 Y CN 2219571Y CN 94218511 CN94218511 CN 94218511 CN 94218511 U CN94218511 U CN 94218511U CN 2219571 Y CN2219571 Y CN 2219571Y
- Authority
- CN
- China
- Prior art keywords
- amplifier
- output
- flase drop
- utility
- model
- 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
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Abstract
The utility model relates to an active electromechanical servo sound box. In the utility model, an execution part and an erroneous detection part are connected in the output loop of an amplification part, the output end of a sensor and the output of the erroneous detection part are respectively connected with the input end of an erroneous detection amplifier, and the output of the erroneous detection amplifier is connected with the reverse input end of the amplifier of the amplification part. The utility model achieves the purposes of high fidelity re-amplification basetone of the small-volume sound box, and the requirements towards a horn are not harsh; the utility model can be used for combined sound boxes, active sound boxes and professional sound boxed to make the performance/cost ratio of products improved, so the utility model is an ideal replacement of the sound box.
Description
The utility model relates to a kind of small-sized sound equipment, i.e. music and voice public address reproducing device.
The small-sized speaker products of present domestic sound equipment manufacturer production does not often possess the ability of resetting big bass, in order to play up its bass effect, have to promote the low frequency part in the music signal artificially, promote small-bore small size audio amplifier by force, make the operation of loudspeaker large amplitude, so just increased distortion greatly; External fewer companies had the research of this respect, but solution is complicated, was difficult to realize, and involved great expense.
The purpose of this utility model is that its volume is little at the audio amplifier of the big bass of a kind of small size hi-fi reproduction that problem proposed of above-mentioned existence, and is not harsh to the loudspeaker requirement, only needs the less easily audio amplifier in pendulum position just can obtain the effect of large volume audio amplifier.
The technical solution of the utility model is: active electromechanical servo audio amplifier, comprise amplifier section, operating part, flase drop amplifier section, flase drop part four parts, wherein operating part and flase drop partly are serially connected in the output loop of amplifier section, the output of the output of transducer and flase drop part links by resistance and flase drop amplifier in respectively, and the output of flase drop amplifier and the amplifier's inverting input of amplifier section are joined.Transducer picks up the acoustic signals of operating part like this, flase drop partly picks up the current signal that drives operating part simultaneously, and the both delivers to the flase drop amplifier section, and circuit is compensated, make entire circuit work in the negative resistance state, form electromechanical integration closed-loop control sound box system.
The utility model adopts negative resistance control theory and modern high-precision sensor, directly picks up the vibrating diaphragm vibration signal, realizes the accurate control of electromechanical integration; In the operating part loop, be provided with simultaneously special-purpose sampling element, add the acting in conjunction of compensated line, entire circuit is operated under the negative resistance mode, realize the loudspeaker rigid bodyization,, realize music playback efficient, low distortion fully to satisfy nurse Hertzian resonator condition suddenly, bass is abundant strong, dynamic response is good, can be widely used in combination audio, active audio amplifier and professional audio amplifier, and the ratio of performance to price of product is improved greatly.
Fig. 1 is the circuit diagram of active electromechanical servo audio amplifier.
Below in conjunction with accompanying drawing the utility model is further described:
Active electromechanical servo audio amplifier is made of amplifier section (1), operating part (2), flase drop amplifier section (3), flase drop part (4) four parts, wherein operating part and flase drop partly are serially connected in the output loop of amplifier section, from Fig. 1 as seen, transducer (5) passes from the rear portion clamping plate and the positive center of magnet of operating part, and the transducer output is by a resistance R
5, resistance R is passed through in the output of flase drop part
4Join with the flase drop amplifier in, the output of flase drop amplifier passes through resistance R
3Link with amplifier's inverting input.Capacitor C
1One end is communicated with the output of flase drop amplifier, other end ground connection.Amplifier section is by a power amplifier and a resistance R
1Constitute resistance R
1Be connected between the inverting input and output of power amplifier, the normal phase input end of power amplifier and IN end link.The flase drop amplifier section is by a flase drop amplifier and a resistance R
2Constitute resistance R
2Be connected between flase drop amplifier's inverting input and the output positive input end grounding of flase drop amplifier.Flase drop part (4) is by resistance R
6Constitute.When audio signal is imported, after amplifier section amplifies, promoting operating part is the loudspeaker vibration sounding, after being picked up by transducer, the acoustic signals that vibration produces delivers to the flase drop amplifier section, the current signal that drives operating part is simultaneously also sent into the flase drop amplifier section after flase drop is partly sampled, just can eliminate the back electromotive force in the loudspeaker coil effectively, improve damping, and the distortion of loud speaker is further eliminated by the transducer control section, thereby realizes the dynamo-electric one comprehensive sound system control of changing.
Claims (3)
1. active electromechanical servo audio amplifier, comprise amplifier section (1), operating part (2), flase drop amplifier section (3), flase drop part (4) four parts, it is characterized in that: operating part (2) is serially connected in the output loop of amplifier section (1) with flase drop part (4), the output of the output of transducer (5) and flase drop part links by resistance and flase drop amplifier in respectively, and the amplifier's inverting input of the output of flase drop amplifier and amplifier section (1) links.
2. audio amplifier according to claim 1 is characterized in that amplifier section is made of a power amplifier and a resistance, and resistance is connected between power amplifier end of oppisite phase and the output.
3. audio amplifier according to claim 1 is characterized in that the flase drop amplifier section is made of an amplifier and a resistance, and resistance is connected between the end of oppisite phase and output of amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94218511 CN2219571Y (en) | 1994-08-19 | 1994-08-19 | Active mechanoelectric-servo-speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94218511 CN2219571Y (en) | 1994-08-19 | 1994-08-19 | Active mechanoelectric-servo-speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2219571Y true CN2219571Y (en) | 1996-02-07 |
Family
ID=33833657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94218511 Expired - Fee Related CN2219571Y (en) | 1994-08-19 | 1994-08-19 | Active mechanoelectric-servo-speaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2219571Y (en) |
-
1994
- 1994-08-19 CN CN 94218511 patent/CN2219571Y/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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |