CN203327217U - Sound equipment system circuit board - Google Patents
Sound equipment system circuit board Download PDFInfo
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- CN203327217U CN203327217U CN201220726740XU CN201220726740U CN203327217U CN 203327217 U CN203327217 U CN 203327217U CN 201220726740X U CN201220726740X U CN 201220726740XU CN 201220726740 U CN201220726740 U CN 201220726740U CN 203327217 U CN203327217 U CN 203327217U
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Abstract
The utility model relates to a sound equipment system circuit board. The sound equipment system circuit board comprises an audio signal input circuit board and an audio signal output circuit board and further comprises an integrated circuit board, wherein the integrated circuit board comprises a power source control circuit zone, a filter circuit zone and a power amplification circuit zone, a power supply part of the power amplification zone is connected with an output part of the power source control circuit zone. The sound equipment system circuit board realizes integration of a traditional power amplification circuit, a traditional filter circuit and a traditional power source control circuit, simplifies production technology, reduces production cost, improves production efficiency, further reduces probability of adverse product quality factors and improves product reliability.
Description
Technical field
The utility model patent 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, because above-mentioned wiring board is the separately design of wiring board of five difference in functionalitys, need at least five group conductive connectings for connecting this 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 carry out the transmittance process of settling signal by some auxiliary material, problem aspect the more various product quality that more easily occur causing because of operate miss or materials quality disunity at 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, there will be the fault caused because of the conductive connecting loose contact, increased 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.
The utility model content
The utility model is for the technical problem existed 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 the probability that the product quality undesirable element occurs simultaneously, improved the reliability of product.
The purpose of the utility model patent can be achieved through the following technical solutions:
A kind of sound system wiring board, comprise 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, after the full-bridge circuit rectification and jumbo filter capacitor C3 filtering formed through diode D1-D4 again, 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 to conducting in turn and cut-off again, just direct current is converted into to high-frequency Rectified alternating current, this Rectified alternating current is delivered on high frequency switch transformer and carried out step-down, to the pulsating voltage after step-down, use linear optical coupling LE817 as the feedback loop to this power supply, play burning voltage and buffer action, again this pulsating voltage is used to diode D6, D7 and filter capacitor C6, C9 carries out rectification and filtering, in order to reduce and better filtering high-frequency ac composition, at power output end, used inductance coil L1 to eliminate again the high-frequency ac composition, voltage and current after treatment is before supplying with the power amplifier use, the voltage and current of this part is done to filtering again, allow all radio-frequency components disappear in fully before power amplifier power supply used.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: at the volume potentiometer output, with two 1/8W22K resistance, signal is shunted, make two paths of signals comprehensively to a road signal, utilize this road signal electric capacity of the dacron by the filtering over the ground of medium-high frequency composition again, remaining low frequency signal is controlled to potentiometer through bass and deliver to coupling capacitance, again the low frequency signal after coupling is delivered to low-pass amplifier and carry 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 the utility model patent 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 caused 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.
The accompanying drawing explanation
Fig. 1 is system module figure of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model patent 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 caused 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, after the full-bridge circuit rectification and jumbo filter capacitor C3 filtering formed through diode D1-D4 again, 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 to conducting in turn and cut-off again, just direct current is converted into to high-frequency Rectified alternating current, this Rectified alternating current is delivered on high frequency switch transformer and carried out step-down, to the pulsating voltage after step-down, use linear optical coupling LE817 as the feedback loop to this power supply, mainly burning voltage and buffer action, again this pulsating voltage is used to diode D6, D7 and filter capacitor C6, C9 carries out rectification and filtering, in order to reduce and better filtering high-frequency ac composition, at power output end, used inductance coil L1 to eliminate again the high-frequency ac composition, voltage and current after treatment is before supplying with the power amplifier use, the voltage and current of this part is done to filtering again, allow all radio-frequency components disappear in fully before power amplifier power supply used.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), by INPUTR and INPUTL input, is input to required audio signal through volume potentiometer W1 and high pitch regulator potentiometer W2 the antihunt circuit be comprised of C24 R17 and C29 R15.Couple a signal to power discharging integrated block TEA2025 signal input part 10 pin, 7 pin by C25, C28 coupling capacitance again.Signal after power discharging integrated block amplifies by C34 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: at the volume potentiometer output, with two 1/8W22K resistance, signal is shunted, make two paths of signals comprehensively to a road signal, utilize this road signal electric capacity of the dacron by the filtering over the ground of medium-high frequency composition again, remaining low frequency signal is controlled to potentiometer through bass and deliver to coupling capacitance, again the low frequency signal after coupling is delivered to low-pass amplifier and carry 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 embodiment of the utility model is described.It will be appreciated that, the utility model 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 utility model.
Claims (1)
1. a sound system wiring board, comprise double-smoothing circuit and bass circuit, 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, 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, after the full-bridge circuit rectification and jumbo filter capacitor C3 filtering formed through diode D1-D4 again, 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 to conducting in turn and cut-off again, direct current is converted into to high-frequency Rectified alternating current, this Rectified alternating current is delivered on high frequency switch transformer and carried out step-down, to the pulsating voltage after step-down, use linear optical coupling LE817 as the feedback loop to this power supply, again this pulsating voltage is used to diode D6, D7 and filter capacitor C6, C9 carries out rectification and filtering, at power output end, used inductance coil L1 to eliminate again the high-frequency ac composition,
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, described volume potentiometer output is shunted signal with two 1/8W22K resistance, make two paths of signals comprehensively to a road signal, utilize this road signal electric capacity of the dacron by the filtering over the ground of medium-high frequency composition again, remaining low frequency signal is controlled to potentiometer through bass and deliver to coupling capacitance, again the low frequency signal after coupling is delivered to low-pass amplifier and carry 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220726740XU CN203327217U (en) | 2012-12-08 | 2012-12-08 | Sound equipment system circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220726740XU CN203327217U (en) | 2012-12-08 | 2012-12-08 | Sound equipment system circuit board |
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| Publication Number | Publication Date |
|---|---|
| CN203327217U true CN203327217U (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220726740XU Expired - Fee Related CN203327217U (en) | 2012-12-08 | 2012-12-08 | Sound equipment system circuit board |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785036A (en) * | 2016-08-25 | 2018-03-09 | 特酷电子设备（上海）有限公司 | Smart home embedded Bluetooth background music player |
-
2012
- 2012-12-08 CN CN201220726740XU patent/CN203327217U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785036A (en) * | 2016-08-25 | 2018-03-09 | 特酷电子设备（上海）有限公司 | Smart home embedded Bluetooth background music player |
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| 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: 20131204 Termination date: 20141208 |
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| EXPY | Termination of patent right or utility model |