CN103139686A - Sound system circuit board - Google Patents
Sound system circuit board Download PDFInfo
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- CN103139686A CN103139686A CN2012105697785A CN201210569778A CN103139686A CN 103139686 A CN103139686 A CN 103139686A CN 2012105697785 A CN2012105697785 A CN 2012105697785A CN 201210569778 A CN201210569778 A CN 201210569778A CN 103139686 A CN103139686 A CN 103139686A
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Abstract
The invention relates to a sound system circuit board which comprises a sound signal input circuit board and a sound signal output circuit board. The sound system circuit board further comprises an integrated circuit board. The integrated circuit board comprises a power supply control circuit area, a filter circuit area and a power amplifier circuit area. A power supply part of the power amplifier circuit area and an output part of the power supply control circuit area are connected. The sound system circuit board integrates a traditional power amplifier circuit, a filter circuit and a power supply control circuit into a whole, production process is simplified, production cost is lowered, production efficiency is improved, meanwhile occurrence probability of bad elements of production quality is reduced, and reliability of the products are improved.
Description
Technical field
Patent of the present invention relates to stereo, relates in particular to a kind of board part for sound system.
Background technology
At present, the multi-media sound system equipment of called optical imaging is except loudspeaker assembly, also comprise power control circuit plate, filter circuit plate, audio signal incoming line plate, power amplification wiring board and audio output line road plate, sound system is finally realized the function of voice signal reduction by circuit corresponding on each wiring board.In process of production, be the separately design of wiring board of five difference in functionalitys due to above-mentioned wiring board, need at least five group conductive connectings to be used for connecting these five wiring boards, so just increased the material cost of five groups of conductive connectings; And need at least five stations of increase to go to insert these five groups of conductive connectings, and increased workload, cause the raising of production cost and the decline of production efficiency; In addition, on each wiring board, network component is mainly to come the transmittance process of settling signal by some auxiliary material, the more problems aspect the various product quality that causing because of operate miss or materials quality disunity more easily appears in production period of wiring board: for example in production process, the solder technology due to conductive connecting has error, may cause the phenomenons such as rosin joint, dry joint, the meeting appearance has increased because of the fault that the conductive connecting loose contact causes the probability that the product quality undesirable element occurs; If the factor of merit of wire rod has error in addition, may accumulate and cause the sensitivity of product that deviation is arranged, directly affected the quality requirements that product should reach.
Summary of the invention
The present invention is directed to the technical problem that exists in above-mentioned prior art, a kind of sound system wiring board is provided, this wiring board combines traditional power amplification circuit, filter circuit and power control circuit together, simplified production technology, reduced production cost, improve production efficiency, reduced simultaneously the probability that the product quality undesirable element occurs, improved the reliability of product.
The purpose of patent of the present invention can be achieved through the following technical solutions:
A kind of sound system wiring board comprises audio signal incoming line plate and audio signal output circuit board, also comprises an integrated circuit board, comprises power control circuit district, filter circuit district and power amplification circuit district on described integrated circuit board.
Further preferably, described power amplification circuit district, its power pack directly couples together with the output in aluminium foil and power control circuit district.
Further preferably, described filter circuit district, it adopts the double-smoothing circuit.
further preferably, described double-smoothing circuit, comprise: resistance R 1, high-frequency filter capacitor C2-C4, diode D1-D4, filter capacitor C3, switch power integrated circuit VIPer22A, high frequency switch transformer, linear optical coupling LE817, diode D6-D7 and filter capacitor C6-C9, inductance coil L1, wherein, civil power is through resistance R 1 and high-frequency filter capacitor C2 and high-frequency filter capacitor C4 filtering high frequency clutter and in-phase interference signal, again after the full-bridge circuit rectification and jumbo filter capacitor C3 filtering through diode D1-D4 composition, electric current is converted to high voltage direct current by High Level AC Voltage, by switch power integrated circuit VIPer22A, electric current is carried out conducting in turn and cut-off again, just direct current is converted into high-frequency Rectified alternating current, this Rectified alternating current is delivered to carried out step-down on high frequency switch transformer, use linear optical coupling LE817 as the feedback loop to this power supply to the pulsating voltage after step-down, mainly burning voltage and buffer action, again this pulsating voltage is used diode D6, D7 and filter capacitor C6, C9 carries out rectification and filtering, in order to reduce and better filtering high-frequency ac composition, used inductance coil L1 to eliminate again the high-frequency ac composition at power output end, voltage and current after treatment is before supplying with the power amplifier use, the voltage and current of this part is done again filtering, allow all radio-frequency components disappear in fully before power amplifier power supply uses.So just reach civil power and be converted to voltage and current that audio frequency power amplifier is required.
Further preferably, described power control circuit district, it adopts wide power voltage supply.
Further preferably, described integrated circuit board also is provided with the bass circuit.
further preferably, described bass circuit comprises: volume potentiometer, two 1/8W22K resistance, electric capacity of the dacron, bass is controlled potentiometer, coupling capacitance, low-pass amplifier, low-frequency power amplifier, dual track power amplification circuit TEA2025, woofer, wherein: signal is shunted with two 1/8W22K resistance at the volume potentiometer output, make two paths of signals comprehensively to one road signal, utilize this road signal electric capacity of the dacron with the filtering over the ground of medium-high frequency composition again, remaining low frequency signal is controlled potentiometer through bass deliver to coupling capacitance, low frequency signal after being coupled is again delivered to low-pass amplifier and is carried out operation amplifier, low frequency signal is passed through, stop high-frequency signal, after being amplified, by low-frequency power amplifier, low frequency signal is amplified again again bass signal, 2 pin and 15 pin bridge joints through dual track power amplification circuit TEA2025 output to woofer again, completed the whole implementation procedure of bass amplifying circuit.
Compared with prior art, the beneficial effect of patent of the present invention is:
1, traditional power amplification circuit, filter circuit and power control circuit are combined together, simplified production technology, reduced production cost, improved production efficiency.
2, save some conductive connectings, reduced the power that the product quality undesirable element that causes due to connecting line quality disunity and failure welding occurs, improved the reliability of product.
3, adopted in design the double-smoothing circuit, further solved the high frequency that causes due to High-frequency Interference and uttered long and high-pitched sounds.
4, in the final frock technique of sound system, basically do not need to use some auxiliary material of winding displacement, holding wire and connecting line etc. and so on, just can complete sound-reducing.
Description of drawings
Fig. 1 is system module figure of the present invention;
Fig. 2 is circuit theory diagrams of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, patent of the present invention is elaborated.
Sound system wiring board as shown in Figure 1, 2, comprise audio signal incoming line plate 1 and audio signal output circuit board 2, also comprise an integrated circuit board, comprise power control circuit district 3, filter circuit district 4 and power amplification circuit district 6 on this integrated circuit board.
In the present embodiment, described power amplification circuit district 6, its power pack directly couples together with the output in aluminium foil and power control circuit district 3.
In the present embodiment, described filter circuit district 4, it adopts the double-smoothing circuit.
In the present embodiment, described power control circuit district 3, it adopts wide power voltage supply.
In the present embodiment, described integrated circuit board also is provided with bass circuit 6.
In the above-described embodiments, adopt the power control circuit of wide power voltage supply and double-smoothing circuit and power amplification circuit to be combined into one, saved being connected between power control circuit, filter circuit and power amplification circuit, simplified production technology, reduce production cost, improved production efficiency; Its double-smoothing circuit has solved especially the high frequency that causes due to High-frequency Interference and has uttered long and high-pitched sounds; On circuit design, the power pack of power amplification circuit is directly coupled together with the output of Copper Foil and power control circuit, further solved the complete machine quality problem that part causes due to connecting line quality disunity and failure welding.
Above-described embodiment principle as shown in Figure 2, R1 choke and C2, C4 electric capacity form high-frequency filter circuit, the D1-D4 diode forms bridge rectifier, and VIPer22A is high on-off switch chip, and F19 is the HF switch chip, E19 is high frequency switch transformer, U2 is photoelectrical coupler, and E19 is high frequency transformer, and U1 (JRC4558) is the low pass operational amplifier, U2 (TEA2025) is the bass amplifier chip, and U3 (TEA2025) is the alt amplification chip; W1 W2 W3 formed the audio signal regulating circuit.
in the present embodiment, described double-smoothing circuit, comprise: resistance R 1, high-frequency filter capacitor C2-C4, diode D1-D4, filter capacitor C3, switch power integrated circuit VIPer22A, high frequency switch transformer, linear optical coupling LE817, diode D6-D7 and filter capacitor C6-C9, inductance coil L1, wherein, civil power is through resistance R 1 and high-frequency filter capacitor C2 and high-frequency filter capacitor C4 filtering high frequency clutter and in-phase interference signal, again after the full-bridge circuit rectification and jumbo filter capacitor C3 filtering through diode D1-D4 composition, electric current is converted to high voltage direct current by High Level AC Voltage, by switch power integrated circuit VIPer22A, electric current is carried out conducting in turn and cut-off again, just direct current is converted into high-frequency Rectified alternating current, this Rectified alternating current is delivered to carried out step-down on high frequency switch transformer, use linear optical coupling LE817 as the feedback loop to this power supply to the pulsating voltage after step-down, mainly burning voltage and buffer action, again this pulsating voltage is used diode D6, D7 and filter capacitor C6, C9 carries out rectification and filtering, in order to reduce and better filtering high-frequency ac composition, used inductance coil L1 to eliminate again the high-frequency ac composition at power output end, voltage and current after treatment is before supplying with the power amplifier use, the voltage and current of this part is done again filtering, allow all radio-frequency components disappear in fully before power amplifier power supply uses.So just reach civil power and be converted to voltage and current that audio frequency power amplifier is required.
In the present embodiment, external source of sound (full range signal) is input to required audio signal through volume potentiometer W1 and high pitch regulator potentiometer W2 the antihunt circuit that is comprised of C24 R17 and C29 R15 by INPUTR and INPUTL input.Couple a signal to power discharging integrated block TEA2025 signal input part 10 pin, 7 pin by C25, C28 coupling capacitance again.Through power discharging integrated block amplify later signal by C34 the C37 coupling output to loud speaker, promote loud speaker and restore two-way medium-high frequency sound.
In order to reduce sound effect, be provided with a kind of bass circuit, fill up the vacancy on sound.in the present embodiment, described bass circuit 6 comprises: volume potentiometer, two 1/8W22K resistance, electric capacity of the dacron, bass is controlled potentiometer, coupling capacitance, low-pass amplifier, low-frequency power amplifier, dual track power amplification circuit TEA2025, woofer, wherein: signal is shunted with two 1/8W22K resistance at the volume potentiometer output, make two paths of signals comprehensively to one road signal, utilize this road signal electric capacity of the dacron with the filtering over the ground of medium-high frequency composition again, remaining low frequency signal is controlled potentiometer through bass deliver to coupling capacitance, low frequency signal after being coupled is again delivered to low-pass amplifier and is carried out operation amplifier, low frequency signal is passed through, stop high-frequency signal, after being amplified, by low-frequency power amplifier, low frequency signal is amplified again again bass signal, 2 pin and 15 pin bridge joints through dual track power amplification circuit TEA2025 output to woofer again, completed the whole implementation procedure of bass amplifying circuit.
Above specific embodiments of the invention are described.It will be appreciated that, the present invention is not limited to above-mentioned specific implementations, and those skilled in the art can make various distortion or modification within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (8)
1. sound system wiring board, comprise audio signal incoming line plate and audio signal output circuit board, it is characterized in that: also comprise an integrated circuit board, include power control circuit district, filter circuit district and power amplification circuit district on described integrated circuit board, the power pack in described power amplification circuit district is connected with the output in power control circuit district.
2. sound system wiring board as claimed in claim 1 is characterized in that: the power pack in the power amplification circuit district on described integrated circuit board directly couples together by the output in aluminium foil and power control circuit district.
3. sound system wiring board as claimed in claim 1 or 2, is characterized in that: filter circuit district's employing double-smoothing circuit of described integrated circuit board.
4. sound system wiring board as claimed in claim 3, it is characterized in that: described double-smoothing circuit, comprise: resistance R 1, high-frequency filter capacitor C2-C4, diode D1-D4, filter capacitor C3, switch power integrated circuit VIPer22A, high frequency switch transformer, linear optical coupling LE817, diode D6-D7 and filter capacitor C6-C9, inductance coil L1, wherein, civil power is through resistance R 1 and high-frequency filter capacitor C2 and high-frequency filter capacitor C4 filtering high frequency clutter and in-phase interference signal, again after the full-bridge circuit rectification and jumbo filter capacitor C3 filtering through diode D1-D4 composition, electric current is converted to high voltage direct current by High Level AC Voltage, by switch power integrated circuit VIPer22A, electric current is carried out conducting in turn and cut-off again, just direct current is converted into high-frequency Rectified alternating current, this Rectified alternating current is delivered to carried out step-down on high frequency switch transformer, use linear optical coupling LE817 as the feedback loop to this power supply to the pulsating voltage after step-down, mainly burning voltage and buffer action, again this pulsating voltage is used diode D6, D7 and filter capacitor C6, C9 carries out rectification and filtering, in order to reduce and better filtering high-frequency ac composition, used inductance coil L1 to eliminate again the high-frequency ac composition at power output end, voltage and current after treatment is before supplying with the power amplifier use, the voltage and current of this part is done again filtering, allow all radio-frequency components disappear in fully before power amplifier power supply uses.
5. sound system wiring board as claimed in claim 1 or 2 is characterized in that: the power control circuit district of described integrated circuit board adopts wide power voltage supply.
6. sound system wiring board as claimed in claim 3 is characterized in that: the power control circuit district of described integrated circuit board adopts wide power voltage supply.
7. sound system wiring board as claimed in claim 1, is characterized in that: be provided with the bass circuit on described integrated circuit board.
8. sound system wiring board as claimed in claim 1, it is characterized in that: described bass circuit comprises: volume potentiometer, two 1/8W22K resistance, electric capacity of the dacron, bass is controlled potentiometer, coupling capacitance, low-pass amplifier, low-frequency power amplifier, dual track power amplification circuit TEA2025, woofer, wherein: signal is shunted with two 1/8W22K resistance at the volume potentiometer output, make two paths of signals comprehensively to one road signal, utilize this road signal electric capacity of the dacron with the filtering over the ground of medium-high frequency composition again, remaining low frequency signal is controlled potentiometer through bass deliver to coupling capacitance, low frequency signal after being coupled is again delivered to low-pass amplifier and is carried out operation amplifier, low frequency signal is passed through, stop high-frequency signal, after being amplified, by low-frequency power amplifier, low frequency signal is amplified again again bass signal, 2 pin and 15 pin bridge joints through dual track power amplification circuit TEA2025 output to woofer again, completed the whole process of bass amplifying circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105697785A CN103139686A (en) | 2012-12-08 | 2012-12-08 | Sound system circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105697785A CN103139686A (en) | 2012-12-08 | 2012-12-08 | Sound system circuit board |
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| CN103139686A true CN103139686A (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105697785A Pending CN103139686A (en) | 2012-12-08 | 2012-12-08 | Sound system circuit board |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105744436A (en) * | 2016-05-06 | 2016-07-06 | 梁镇杰 | Novel sound box |
| CN108255104A (en) * | 2018-01-10 | 2018-07-06 | 吴配云 | A kind of control method of the sound system device of embedded system control |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2109676U (en) * | 1991-06-05 | 1992-07-08 | 周斌 | Multifunctional sound box |
| CN101540943A (en) * | 2008-03-18 | 2009-09-23 | 桦勋有限公司 | Micro speaker system integrating filter circuit and power adjusting circuit |
| CN202068536U (en) * | 2011-05-17 | 2011-12-07 | 泾县祥盛科技有限公司 | Integrated circuit board used in audio system |
| CN202918477U (en) * | 2012-07-19 | 2013-05-01 | 泾县祥盛科技有限公司 | High-efficiency integrated circuit board |
-
2012
- 2012-12-08 CN CN2012105697785A patent/CN103139686A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2109676U (en) * | 1991-06-05 | 1992-07-08 | 周斌 | Multifunctional sound box |
| CN101540943A (en) * | 2008-03-18 | 2009-09-23 | 桦勋有限公司 | Micro speaker system integrating filter circuit and power adjusting circuit |
| CN202068536U (en) * | 2011-05-17 | 2011-12-07 | 泾县祥盛科技有限公司 | Integrated circuit board used in audio system |
| CN202918477U (en) * | 2012-07-19 | 2013-05-01 | 泾县祥盛科技有限公司 | High-efficiency integrated circuit board |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105744436A (en) * | 2016-05-06 | 2016-07-06 | 梁镇杰 | Novel sound box |
| CN108255104A (en) * | 2018-01-10 | 2018-07-06 | 吴配云 | A kind of control method of the sound system device of embedded system control |
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Application publication date: 20130605 |