CN201450584U - Beautiful sound audio power amplifier - Google Patents
Beautiful sound audio power amplifier Download PDFInfo
- Publication number
- CN201450584U CN201450584U CN2009200551988U CN200920055198U CN201450584U CN 201450584 U CN201450584 U CN 201450584U CN 2009200551988 U CN2009200551988 U CN 2009200551988U CN 200920055198 U CN200920055198 U CN 200920055198U CN 201450584 U CN201450584 U CN 201450584U
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- power amplifier
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- amplifying circuit
- frequency power
- pass filtering
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Abstract
The utility model discloses a beautiful sound audio power amplifier, which comprises a front input amplifying circuit (1), a high-pass filter and amplifying circuit (2), an alt electron tube audio power amplifier (3), a low-pass filter and amplifying circuit (4) and a low audio semiconductor audio power amplifier (5), which are connected with each other. The beautiful sound audio power amplifier can justly develop the maximal advantages of the electron tube power amplifier and a semiconductor device power amplifier, avoids the maximal disadvantages of the power amplifiers, can greatly reduce the manufacture difficulty and material cost of an audio output transformer of the electron tube power amplifier, and has excellent sound amplification effect.
Description
Technical field:
The utility model relates to a kind of sound appliances, and specifically a kind of beautiful sound is power amplifier frequently.
Background technology:
Present audio-frequency power amplifier on the market if divide by making equipment, mainly contains three kinds:
The one, " courage " machine that the valve-type audio-frequency power amplifier that electricity consumption forms in pipe dress system also promptly is commonly called as;
The 2nd, " stone " machine that the audio-frequency power amplifier of the semiconductor-type that forms with semiconductor equipment such as transistor, field effect transistor, integrated circuit, modular circuit dress system also promptly is commonly called as;
The 3rd, the existing cholelith mixed audio power amplifier that forms with the also useful semiconductor equipment dress of electron tube system, " the cholelith mixer " that also promptly generally is commonly called as.This " cholelith mixer " it have prestage to select the electron tube assembling for use again, cholelith hybrid mode and prestage that back level power amplifier is then selected for use the semiconductor equipment to assemble and promptly is called for short " stone behind the preceding courage " are selected the assembling of semiconductor equipment for use, and then the level power amplifier is then selected the i.e. branch of the audio-frequency power amplifier of the cholelith hybrid mode of abbreviation " courage behind the preceding stone " of electron tube assembling for use.
And positive so-called: " winged steed is good again, and cultivated land is not as ox! Though offroad vehicle strength crosses the river not as boat! Its advantage is respectively arranged, has respectively that it is not enough "! As a same reason, these three kinds of audio-frequency power amplifiers, be each have their own advantage too, also each have their own deficiency: concerning valve-type audio-frequency power amplifier also is " courage " machine, its biggest advantage is exactly that tonequality is softer, lubricated, fine and smooth, sweet beautiful, make us intoxicated, very graceful anti-tin of tone color! But blemish in an otherwise perfect thing is: it is difficult to accomplish " stone " a powerful effect of bass of machine the sort of " earthshaking impact "! Because it is the audio-frequency power amplifier of a high voltage, high internal resistance, little current type for " courage " machine, the LF-response that adds it is subjected to the influence of output transformer inductance value and is difficult to move down, so that its low-frequency minimum and dynamics just are nothing like " stone " machine formula audio-frequency power amplifier that forms with low-voltage, low internal resistance, high-current semiconductor equipment dress system naturally is powerful! And be the audio-frequency power amplifier of high voltage, high internal resistance, little electric current character just because of it, thereby the Low ESR used of it and playback, the playback loudspeaker of big electric current be unmatched at all, so it leaves no choice but use output transformer just can accomplish impedance matching and power match.And owing to be subjected to high voltage, high internal resistance, little characteristics of current and also must many-sided restriction such as all will take into account to highest audio and lowest audio frequency simultaneously, its output transformer that can be simultaneously can both finely take into account highest audio and lowest audio frequency is very to be difficult to coiling so valve-type audio-frequency power amplifier! This be because, if guarantee to have the frequency response of least significant end as far as possible, high voltage, high internal resistance, low-frequency characteristics just must cause the required inductance value of its output transformer also very big so, that is to say will around the output transformer wire circle many, thereby its coiling with copper and silicon steel sheet also all quite more than! And on the other hand, since will around the number of turns many, so cause its distributed capacitance too can be very big, this high-end frequency that can cause its audio power to be exported is again suffered the bypass deterioration and is greatly affected, so can only be segmentation and layering go around, it is quite complicated causing its manufacture craft to reduce its distributed capacitance as far as possible! Thereby the used output transformer of electron tube audio-frequency power amplifier that can take into account most significant end frequency and least significant end frequency simultaneously of a high-quality is very heavy, is to be difficult to coiling, thereby also is very expensive.
And use transistor, field effect transistor, integrated circuit, the audio-frequency power amplifier that semiconductor equipment such as modular circuit dress system forms, " stone " machine that promptly is commonly called as, though its bass is more powerful than electron tube audio-frequency power amplifier, but its tonequality especially its alt frequency range tonequality is compared with sweet beautiful " courage " machine of tone color, it is obviously stiff to exist, unstable, send out " the transistor sound " of point, having listened of a specified duration can allow the people feel irritated easily, that is to say, this simple " stone " machine that forms with semiconductor equipment dress system, its tonequality be really not as " courage " machine pleasing to the ear, thereby often also not anti-tin!
As for the at present the sort of existing audio-frequency power amplifier of making the what is called " cholelith mixed type " that forms with the also useful semiconductor equipment dress of electron tube.Its original original idea all is to want to utilize the heterogeneity of " courage " and " stone " to remove " learning from other's strong points to offset one's weaknesses ", so that want to have better tone color.But on actual sense of hearing, no matter be " stone behind the preceding courage " or " courage behind the preceding stone ", how many its playback effects but can not change! This be because, no matter be the audio-frequency power amplifier of " stone behind the preceding courage " formula, or the audio-frequency power amplifier of " courage behind the preceding stone " formula, objectively all be on same audio transmission line road, dividing " elder generation " to carry out simple " series connection " formula with the different of " back " in " courage " and " stone " mixes, but its " series connection " mixes final " playback " effect in back, will be that genus " courage " or " attribute " that belong to " stone " are determined by that last one-level of " series connection " back still basically! The audio-frequency power amplifier of " stone behind the preceding courage " formula for example, " playback " effect that it is final, basically still by in " back stone " " stone " the playback character of machine determined, it be impossible have pure " courage " machine the sort of soft, lubricated, fine and smooth, sweet beautiful, make us intoxicated, very graceful anti-tin playback effect! Otherwise, the audio-frequency power amplifier of " courage behind the preceding stone " formula, " playback " effect that it is final still is determined by the playback character of " courage " machine in " back courage " basically, and it is impossible have the sort of powerful bass playback effect of pure " stone " machine! And it also could keep in " courage " machine character maximum defective simultaneously, that is to say that to need technological requirement quite high, this big shortcoming of not only expensive but also heavy output transformer! So this branch successively but still just at " cholelith mixed type " audio-frequency power amplifier of same audio transmission line Lu Shangxiang " series connection ", is to be difficult to have simultaneously tamber effect most beautiful in " courage " machine and " stone " machine!
Summary of the invention:
The utility model is to overcome the not enough this beautiful sound of developing of existing product power amplifier frequently, it is realized by the following technical solutions: at first in the method for prime with filtering, whole tone in audio signal frequency signal is carried out separating by frequency range, that is to say on the way with high-pass filtering circuit and low-pass filter circuit wherein alt frequency range and bass frequency range are carried out frequency-selecting separately, to give the audio-frequency power amplifier of forming by electron tube by the frequent segment signal of the alt that high-pass filtering circuit screens then and carry out power amplification, thereby the problem of the output transformer of the big inductance quantity of the not only expensive not only heavy but also difficult coiling that allows the electron tube audio-frequency power amplifier avoided will facing when the audio bass power amplification.Because concerning being the electron tube power amplifier of load with output transformer and so on inductance device, because of the beginning frequency point of its minimum work is high more, the number of turns during its coiling output transformer is just more little, just easy more coiling, thereby volume is also just more little, and cost is also just low more.So alt band electronic pipe audio-frequency power amplifier in the middle of the utility model, though also will use output transformer, but because its output transformer only works within the alt audiorange, so aspects such as its number of turns, volume, weight, cost all only are original 1/2nd, even lower.Also low many of technological requirement, thereby very help processing and produce in enormous quantities.And owing to reduced the sound that causes the bass aspect and dye, the sort of alt tonequality of " courage " machine is softer, lubricated, fine and smooth, and is sweet beautiful, makes us intoxicated, and the advantage that tone color is very graceful anti-tin also just can bring into play better!
On the other hand, meanwhile, prime will be given by transistor, field effect transistor, integrated circuit, modular circuit by the bass frequency band signals that low-pass filter circuit screens ... the audio bass power amplifier of forming Deng the semiconductor equipment carries out power amplification, thereby the audio power that allows it only merely carry out the bass segment signal that powerful bass effect can be arranged that it is good at most amplifies, and need not consider again that at all its tonequality when the alt audio section amplifies is stiff, unstable, send out point, tonequality is not as the deficiency of " courage " machine.
In sum, the utility model is the sort of after " courage " " stone " phase " series connection " formula " courage " " stone " hybrid mode has made " first frequency-division section amplification " on same the audio transmission line road with routine, the hybrid mode of " courage " " stone " phase " parallel connection " power output again, thereby both kept " courage " machine and " stone " machine advantage separately, and avoided their deficiency simultaneously.So be a comparatively ideal scheme.
An embodiment scheme of the present utility model as shown in Figure 1, it is characterized in that: it is by preposition input amplifying circuit 1, high-pass filtering and amplifying circuit 2, alt band electronic pipe audio-frequency power amplifier 3, low-pass filtering and amplifying circuit 4, bass semiconductor audio-frequency power amplifier 5 functional circuits such as grade cooperatively interact and are formed by connecting.Its annexation that cooperatively interacts is: high-pass filtering is connected with the signal output part of preposition input amplifying circuit 1 with the signal input part of amplifying circuit 2; High-pass filtering is connected with the signal input part of alt band electronic pipe audio-frequency power amplifier 3 with the signal output part of amplifying circuit 2; Low-pass filtering is connected with the signal output part of preposition input amplifying circuit 1 with the signal input part of amplifying circuit 4; Low-pass filtering is connected with the signal input part of bass semiconductor audio-frequency power amplifier 5 with the signal output part of amplifying circuit 4.
The results that the utility model is done like this, its useful result one are to have brought into play electron tube power amplifier and the maximum separately advantage of semiconductor power amplifier rightly! And the while has been avoided maximum inferior position separately rightly! The 2nd, it can reduce the manufacture difficulty and the material cost of its audio frequency output transformer of electron tube power amplifier significantly.The 3rd, it has quite outstanding playback effect: existing " courage " machine the sort of soft, lubricated, fine and smooth, sweet beautiful, make us intoxicated, very graceful anti-tin alt, bass shock effect powerful as " stone " machine the sort of " earthshaking " is also arranged!
Description of drawings:
Fig. 1 is a square frame principle schematic diagram of the present utility model; Among the figure: the 1st, preposition input amplifying circuit, the 2nd, high-pass filtering and amplifying circuit, the 3rd, alt band electronic pipe audio-frequency power amplifier, the 4th, low-pass filtering and amplifying circuit, the 5th, bass semiconductor audio-frequency power amplifier.
Fig. 2 is the circuit theory schematic diagram of the utility model one embodiment; Among the figure: W is a potentiometer, R is a resistance, C is an electric capacity, and T is an output transformer, and U is an electron tube, N is the semiconductor integrated circuit power amplifier module, G is a signal input socket, and Y is loudspeaker, and Vcc is a semiconductor device low pressure positive supply, Vee is a semiconductor device low pressure negative supply, and B+ is an electron tube high pressure positive supply.
What must illustrate in addition is: in real commodity, general power amplifier all cannot not be subsidiary loudspeaker.But the output of power amplifier connects for convenience of explanation, so also loudspeaker Y1, mediant trumpet Y2, bass horn Y3 have been drawn.
Embodiment:
Now in conjunction with the accompanying drawings the utility model embodiment is described in further detail:
Fig. 1 is the square frame principle schematic diagram of the utility model one embodiment; It is by preposition input amplifying circuit 1, high-pass filtering and amplifying circuit 2, and alt band electronic pipe audio-frequency power amplifier 3, low-pass filtering and amplifying circuit 4, bass semiconductor audio-frequency power amplifier 5 functional circuits such as grade cooperatively interact and are formed by connecting.Its annexation that cooperatively interacts is: high-pass filtering is connected with the signal output part of preposition input amplifying circuit 1 with the signal input part of amplifying circuit 2; High-pass filtering is connected with the signal input part of alt band electronic pipe audio-frequency power amplifier 3 with the signal output part of amplifying circuit 2; Low-pass filtering is connected with the signal output part of preposition input amplifying circuit 1 with the signal input part of amplifying circuit 4; Low-pass filtering is connected with the signal input part of bass semiconductor audio-frequency power amplifier 5 with the signal output part of amplifying circuit 4.
Fig. 2 is the circuit theory schematic diagram of one of them embodiment of the present utility model.In Fig. 2: preposition input amplifying circuit 1 is combined by U1, W1, C1, C2, C3, C4, R1, R2, R3, R4, R6; High-pass filtering and amplifying circuit 2 are combined by C6, R7, R8, R9, C7, U2, C5, R5, C8, alt band electronic pipe audio-frequency power amplifier 3 is combined by U3, W2, R10, R11, R12, C9, T, C10, low-pass filtering and amplifying circuit 4 by R13, C13, R14, U4, C12, C14, C15, R15, R16, R17, combine, bass semiconductor audio-frequency power amplifier 5 is combined by W3, R18, N, R19, R20, R21, C16, C17, C18, C19.
In above embodiment circuit, selecting for use of its main element is as follows: total volume control potentiometer W1, alt volume control potentiometer W2, bass volume control potentiometer W3 all can select homemade WH148 type for use, electron tube U1, U2, U4 all can select for use Europe two three extremely electricity in pipe ECC83, electron tube U53 can select five utmost point power amplifier electron tube EL84 in Europe for use, and it is HF-10W's that output transformer T can select model for use.It is LM4700's that semiconductor integrated circuit power amplifier module N can select model for use.
The operation principle of present embodiment is also uncomplicated, existing tube is stated as follows: sent here the whole tone frequency signal that will amplify by signal input socket G, after complete machine volume control potentiometer W1 regulates, deliver to electron tube U1 and do preposition amplification, whole tone after the amplification frequently signal through capacitor C 3 and resistance R 6 cent two-way then: the one tunnel is sent to by C6, the high pass filter that R7 formed filters out the alt audio signal, the alt audio signal that then this is filtered out, deliver to the pre-amplification that electron tube U2 carries out the alt audio frequency, and carry out delivering to the power amplification that electron tube U3 carries out the alt audio frequency again after the volume adjusting of alt audio frequency through alt volume control potentiometer W2 again through the alt audio signal behind pre-the amplification, to emit " courage " machine the sort of soft with the secondary loudspeaker Y1 that is connected of the output transformer T of alt electron tube audio-frequency power amplifier and mediant trumpet Y2 thereby make, lubricated, fine and smooth, sweet beautiful, order is gone into intoxicated, very graceful anti-tin alt.
And on the other hand, thereby by signal input socket G send here and whole tone after electron tube U1 does preposition amplification frequently signal after capacitor C 3 and resistance R 6, change and also promptly be sent to the low pass filter of forming by R13 and C13 by another branch road and filter out the audio bass signal.The audio bass signal that this filters out, deliver to the pre-amplification that electron tube U4 carries out audio bass again, and after the audio bass signal behind pre-the amplification carries out the volume adjusting of audio bass through bass volume control potentiometer W3, deliver to the bass semiconductor audio-frequency power amplifier of forming by semiconductor integrated circuit power amplifier module N and supporting resistance capacitance again and carry out power amplification, emit powerful audio bass thereby make with the mutually direct-connected bass horn of its output.
In addition, what also must illustrate is, in all embodiment, most critical be that alt band electronic pipe audio-frequency power amplifier 3 must use electron tube! Bass semiconductor audio-frequency power amplifier 5 then must use semiconductor device! The tone color that only in this way just can guarantee complete machine can have simultaneously " courage " machine the sort of soft, lubricated, fine and smooth, sweet beautiful, make us intoxicated, very graceful anti-tin alt and the powerful playback effect of bass of " stone " machine the sort of " earthshaking impact "! As for preposition input amplifying circuit 1, high-pass filtering and amplifying circuit 2 and low-pass filtering and amplifying circuit 4, then can apply in a flexible way, promptly both can as present embodiment, use electron tube, but also can substitute, also be more or less the same through testing its effect with semiconductor device such as transistor, field effect transistor, integrated circuit, modular circuits.And the essence of these variations also is still content of the present utility model, so also must regard as within protection range of the present utility model.
Claims (1)
1. beautiful sound power amplifier frequently, it is characterized in that: it is by preposition input amplifying circuit (1), high-pass filtering and amplifying circuit (2), alt band electronic pipe audio-frequency power amplifier (3), low-pass filtering and amplifying circuit (4), bass semiconductor audio-frequency power amplifier functional circuits such as (5) cooperatively interacts and is formed by connecting; Its annexation that cooperatively interacts is: high-pass filtering is connected with the signal output part of preposition input amplifying circuit (1) with the signal input part of amplifying circuit (2); High-pass filtering is connected with the signal input part of alt band electronic pipe audio-frequency power amplifier (3) with the signal output part of amplifying circuit (2); Low-pass filtering is connected with the signal output part of preposition input amplifying circuit (1) with the signal input part of amplifying circuit (4); Low-pass filtering is connected with the signal input part of bass semiconductor audio-frequency power amplifier (5) with the signal output part of amplifying circuit (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200551988U CN201450584U (en) | 2009-04-23 | 2009-04-23 | Beautiful sound audio power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200551988U CN201450584U (en) | 2009-04-23 | 2009-04-23 | Beautiful sound audio power amplifier |
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| Publication Number | Publication Date |
|---|---|
| CN201450584U true CN201450584U (en) | 2010-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200551988U Expired - Fee Related CN201450584U (en) | 2009-04-23 | 2009-04-23 | Beautiful sound audio power amplifier |
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| Country | Link |
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| CN (1) | CN201450584U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102790590A (en) * | 2011-05-18 | 2012-11-21 | 上海耐普微电子有限公司 | Power amplifier circuit |
| CN103475324A (en) * | 2013-09-13 | 2013-12-25 | 昆山新金福精密电子有限公司 | Audio amplification output circuit |
| CN105635466A (en) * | 2015-12-30 | 2016-06-01 | 惠州Tcl移动通信有限公司 | Mobile communication terminal and audio circuit thereof |
| CN108495236A (en) * | 2018-05-03 | 2018-09-04 | 陕西理工大学 | A kind of computer audio transmission processor |
| CN112152576A (en) * | 2019-06-27 | 2020-12-29 | 名世电子企业股份有限公司 | Natural sound field sound dividing system of vacuum tube and transistor amplifier |
| TWI784178B (en) * | 2019-06-27 | 2022-11-21 | 名世電子企業股份有限公司 | Vacuum tube and transistor amplifier natural sound field crossover system |
-
2009
- 2009-04-23 CN CN2009200551988U patent/CN201450584U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102790590A (en) * | 2011-05-18 | 2012-11-21 | 上海耐普微电子有限公司 | Power amplifier circuit |
| CN103475324A (en) * | 2013-09-13 | 2013-12-25 | 昆山新金福精密电子有限公司 | Audio amplification output circuit |
| CN105635466A (en) * | 2015-12-30 | 2016-06-01 | 惠州Tcl移动通信有限公司 | Mobile communication terminal and audio circuit thereof |
| CN105635466B (en) * | 2015-12-30 | 2019-12-13 | 惠州Tcl移动通信有限公司 | Mobile communication terminal and audio circuit thereof |
| CN108495236A (en) * | 2018-05-03 | 2018-09-04 | 陕西理工大学 | A kind of computer audio transmission processor |
| CN112152576A (en) * | 2019-06-27 | 2020-12-29 | 名世电子企业股份有限公司 | Natural sound field sound dividing system of vacuum tube and transistor amplifier |
| JP2021007210A (en) * | 2019-06-27 | 2021-01-21 | 名世電子企業股▲ふん▼有限公司 | Vacuum tube and transistor amplifier natural sound field tone dividing system |
| JP2022088393A (en) * | 2019-06-27 | 2022-06-14 | 名世電子企業股▲ふん▼有限公司 | Vacuum tube and transistor amplifier natural sound field tone dividing system |
| TWI784178B (en) * | 2019-06-27 | 2022-11-21 | 名世電子企業股份有限公司 | Vacuum tube and transistor amplifier natural sound field crossover system |
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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: 20100505 Termination date: 20170423 |
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| CF01 | Termination of patent right due to non-payment of annual fee |