CN112969131A - High-fidelity sound box and implementation method thereof - Google Patents
High-fidelity sound box and implementation method thereof Download PDFInfo
- Publication number
- CN112969131A CN112969131A CN202110447422.3A CN202110447422A CN112969131A CN 112969131 A CN112969131 A CN 112969131A CN 202110447422 A CN202110447422 A CN 202110447422A CN 112969131 A CN112969131 A CN 112969131A
- Authority
- CN
- China
- Prior art keywords
- circuit
- resistance
- resistor
- fixed value
- output
- 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.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
Abstract
The invention discloses a high-fidelity sound and a realization method thereof, which comprises a box body, wherein a circuit board is arranged in the box body, a preamplification circuit, an overheating protection circuit, a silent operation circuit and a sound main body circuit are integrated on the circuit board, the overheating protection circuit and the silent operation circuit are sequentially connected in series between the preamplification circuit and the sound main body circuit, the output end of the preamplification circuit is electrically connected with the input end of the overheating protection circuit, and the output end of the overheating protection circuit is electrically connected with the input end of the silent operation circuit. The total harmonic distortion is low, and the method is beneficial to practical use.
Description
Technical Field
The invention belongs to the field of sound circuit, in particular to a high-fidelity sound and an implementation method thereof.
Background
In the existing life, the sound equipment refers in particular to a set of audio system for making sound by combining electrical equipment, the development history of the sound equipment technology can be divided into four stages of an electronic tube, a transistor, an integrated circuit and a field effect tube, along with the social progress, people tend to live more and more colorful, singing and dancing are taken as an entertainment form which flows for thousands of years and deeply enter the lives of people of all families, but along with the development and progress of science and technology, people have more and more requirements and higher requirements on performance forms and sites of the singing and dancing, the sound equipment is continuously improved and perfected along with the requirements of people, the sound equipment meets the field sound amplification requirement of the singing of tens of thousands of people, the sound equipment is small enough to meet the requirements of playing musical instruments and K songs in individual families, and along with the progress of the technology.
But the inside high-fidelity sound circuit that adopts of current high-fidelity sound mostly is only pure possess the fidelity effect, and lack corresponding safety protection measure, still need increase certain protection circuit in high-fidelity sound circuit outside, could obtain safety protection measure, thereby increased the inside circuit component of high-fidelity sound, make its inside circuit complicated, be not convenient for maintain, current high-fidelity sound circuit is when using simultaneously, its fidelity effect is not ideal, be unfavorable for actual use.
The invention content is as follows:
the present invention aims to solve the above problems by providing a hi-fi stereo and a method for implementing the same, which solves the problems mentioned in the background art.
In order to solve the above problems, the present invention provides a technical solution:
the utility model provides a high-fidelity sound, includes the box, the inside of box is provided with the circuit board, integrated on the circuit board have preamplification circuit, overheat protection circuit, noiseless operation circuit and stereo set main part circuit, overheat protection circuit and noiseless operation circuit establish ties between preamplification circuit and stereo set main part circuit in proper order, preamplification circuit's output and overheat protection circuit's input electric connection, overheat protection circuit's output and noiseless operation circuit's input electric connection, noiseless operation circuit's output and stereo set main part circuit's input electric connection.
Preferably, the input terminal of the pre-amplification circuit is electrically connected with an external power supply.
Preferably, the output end of the main audio circuit is electrically connected to an output circuit inside the cabinet.
Preferably, the pre-amplification circuit is used for amplifying the external power input pressure signal to obtain an amplified analog pressure signal and outputting the amplified analog pressure signal to the overheating protection circuit, the overheating protection circuit is used for detecting the temperature of the whole circuit in real time and sending a power-off signal according to the detected temperature, the silent operation circuit is used for controlling the circuit to be started by alternating current and operated by direct current, and simultaneously ensuring the circuit to operate silently, and the main circuit of the sound box is used for reducing the total harmonic distortion of the sound box and ensuring the normal output of the sound box circuit.
Preferably, the preamplifier circuit comprises a diode VD1, a capacitor C1, a fixed resistor R1, a fixed resistor R2 and a capacitor C2, the capacitance value of the capacitor C1 is 10F, the capacitance value of the capacitor C2 is 15F, the resistance value of the fixed resistor R1 is 5k Ω, and the resistance value of the fixed resistor R2 is 3k Ω.
Preferably, the overheating protection circuit comprises a resistance wire R3, a resistance wire R4, a resistance wire R5, a resistance wire R6 and a thermistor PTC, wherein the resistance value of the resistance wire R3 is 5k Ω, the resistance value of the resistance wire R4 is 2k Ω, the resistance value of the resistance wire R5 is 3k Ω, and the resistance value of the resistance wire R6 is 5k Ω.
Preferably, the silent running circuit comprises a contact KM1, a contact KM2, a fixed resistor R7, a fixed resistor R8, a diode VD2, a diode VD3, a push-button switch SB1 and a push-button switch SB2, wherein the resistance of the fixed resistor R7 is 6k Ω, the resistance of the fixed resistor R8 is 9k Ω, the resistance of the fixed resistor R9 is 11k Ω, and the resistance of the fixed resistor R10 is 15k Ω.
Preferably, the main audio circuit includes a fixed resistor R9, a fixed resistor R10, a fixed resistor R11, a fixed resistor R12, a fixed resistor R13 and a capacitor C4, wherein the fixed resistor R9 has a resistance of 4.7k Ω, the fixed resistor R10 has a resistance of 10k Ω, the fixed resistor R11 has a resistance of 0.1k Ω, the fixed resistor R12 has a resistance of 8k Ω, the fixed resistor R13 has a resistance of 0.1k Ω, and the capacitor C4 has a capacitance of 10F.
A method for realizing high fidelity sound equipment comprises the following steps:
s1, when the output power is 50W, under the condition that the frequency is 20kHz, the total harmonic distortion is 0.02%;
s2, when the output power is 50W, under the condition that the frequency is 1kHz, the total harmonic distortion is 0.002%;
s3, when the power supply voltage is +/-15V, the output linear dynamic range is +/-12V;
and S4, when the power supply voltage is +/-40V, the output linear dynamic range is +/-35V.
The invention has the beneficial effects that: the circuit board in the high-fidelity sound box is integrated with the overheat protection circuit, so that the complexity of an external circuit is avoided, the overall safety protection performance of the high-fidelity sound box circuit is improved, and meanwhile, the preamplification circuit is arranged to be matched with the silent operation circuit, so that the fidelity effect of the high-fidelity sound box is greatly improved, the total harmonic distortion is low, and the actual use is facilitated.
Description of the drawings:
for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a schematic diagram of the external structure of a high-fidelity sound box of the invention;
FIG. 2 is a schematic block diagram of the internal circuit of the high fidelity audio of the invention;
fig. 3 is a schematic diagram of the internal circuit of the hi-fi stereo of the present invention.
In the figure: 1. a box body; 2. a circuit board.
The specific implementation mode is as follows:
as shown in fig. 1 to 3, the following technical solutions are adopted in the present embodiment:
example (b):
the utility model provides a high-fidelity stereo set, includes box 1, the inside of box 1 is provided with circuit board 2, integrated preamplification circuit, overheat protection circuit, noiseless operation circuit and the stereo set main part circuit on circuit board 2, overheat protection circuit and noiseless operation circuit establish ties between preamplification circuit and stereo set main part circuit in proper order, preamplification circuit's output and overheat protection circuit's input electric connection, overheat protection circuit's output and noiseless operation circuit's input electric connection, noiseless operation circuit's output and stereo set main part circuit's input electric connection, the circuit of the better 1 inside integrated box of being convenient for through circuit board 2 to convenient follow-up maintains and overhauls it.
The input end of the pre-amplification circuit is electrically connected with an external power supply, so that the circuit board 2 is connected with the external power supply through the pre-amplification circuit better, and power supply is facilitated.
Wherein, the output of sound main body circuit and the inside output circuit electric connection of box 1 are convenient for better be connected circuit board 2 and the inside output circuit of box 1 through sound main body circuit to circuit after convenient output is handled.
The pre-amplification circuit is used for amplifying an external power input pressure signal to obtain an amplified analog pressure signal and outputting the amplified analog pressure signal to the overheating protection circuit, the overheating protection circuit is used for detecting the temperature of the whole circuit in real time and sending a power-off signal according to the detected temperature, the silent operation circuit is used for controlling the circuit to be started by adopting alternating current and to be operated by adopting direct current, and simultaneously, the operation of the circuit is ensured to be silent, and the main circuit of the sound box is used for reducing the total harmonic distortion of the sound box and ensuring the normal output of the sound circuit.
The pre-amplification circuit comprises a diode VD1, a capacitor C1, a fixed value resistor R1, a fixed value resistor R2 and a capacitor C2, the capacitance value of the capacitor C1 is 10F, the capacitance value of the capacitor C2 is 15F, the resistance value of the fixed value resistor R1 is 5k omega, the resistance value of the fixed value resistor R2 is 3k omega, and the external power supply input pressure signal can be conveniently amplified through the pre-amplification circuit.
The overheating protection circuit comprises a resistance wire R3, a resistance wire R4, a resistance wire R5, a resistance wire R6 and a thermistor PTC, the resistance value of the resistance wire R3 is 5k omega, the resistance value of the resistance wire R4 is 2k omega, the resistance value of the resistance wire R5 is 3k omega, the resistance value of the resistance wire R6 is 5k omega, and the box body 1 can be better subjected to overheating protection through the overheating protection circuit.
Wherein, silent operation circuit includes contact KM1, contact KM2, definite value resistance R7, definite value resistance R8, diode VD2, diode VD3, button switch SB1 and button switch SB2, definite value resistance R7's resistance is 6k omega, definite value resistance R8's resistance is 9k omega, definite value resistance R9's resistance is 11k omega, definite value resistance R10's resistance is 15k omega, through silent operation circuit be convenient for better through switching alternating current and direct current to guarantee that the circuit operation is silent.
The main circuit of the sound box comprises a fixed value resistor R9, a fixed value resistor R10, a fixed value resistor R11, a fixed value resistor R12, a fixed value resistor R13 and a capacitor C4, wherein the resistance value of the fixed value resistor R9 is 4.7k omega, the resistance value of the fixed value resistor R10 is 10k omega, the resistance value of the fixed value resistor R11 is 0.1k omega, the resistance value of the fixed value resistor R12 is 8k omega, the resistance value of the fixed value resistor R13 is 0.1k omega, the capacitance value of the capacitor C4 is 10F, and the fidelity effect is better guaranteed through the main circuit of the sound box.
A method for realizing high fidelity sound equipment comprises the following steps:
s1, when the output power is 50W, under the condition that the frequency is 20kHz, the total harmonic distortion is 0.02%;
s2, when the output power is 50W, under the condition that the frequency is 1kHz, the total harmonic distortion is 0.002%;
s3, when the power supply voltage is +/-15V, the output linear dynamic range is +/-12V;
and S4, when the power supply voltage is +/-40V, the output linear dynamic range is +/-35V.
Specifically, when the device is used, firstly, the device is placed at a designated position, then the device is electrified, the external power supply current passes through the preamplifier circuit, the external power supply input pressure signal is amplified to obtain an amplified analog pressure signal and is output to the overheat protection circuit, the temperature of the whole circuit is detected in real time through the overheat protection circuit, a power-off signal is sent according to the detected temperature, then the current passes through the silent operation circuit, the control circuit is started by adopting alternating current and operates by adopting direct current, the circuit is ensured to operate soundless, finally, the total harmonic distortion of the sound is reduced and the normal output of the sound circuit is ensured through the sound main circuit, the current output by the sound main circuit enters the output circuit in the box body 1, the normal operation of the box body 1 is ensured, when the output power is 50W, under the condition that the frequency is 20kHz, the total harmonic distortion is 0.02%; when the output power is 50W, under the condition that the frequency is 1kHz, the total harmonic distortion is 0.002 percent; when the power supply voltage is +/-15V, the output linear dynamic range is +/-12V; when the power supply voltage is +/-40V, the output linear dynamic range is +/-35V.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a high-fidelity sound, its characterized in that, includes box (1), the inside of box (1) is provided with circuit board (2), integrated preamplification circuit, overheat protection circuit, noiseless operation circuit and stereo set main part circuit on circuit board (2), overheat protection circuit and noiseless operation circuit establish ties between preamplification circuit and stereo set main part circuit in proper order, preamplification circuit's output and overheat protection circuit's input electric connection, overheat protection circuit's output and noiseless operation circuit's input electric connection, noiseless operation circuit's output and stereo set main part circuit's input electric connection.
2. The hi-fi stereo set of claim 1, wherein the input terminal of the pre-amplifier circuit is electrically connected to an external power supply.
3. The hi-fi sound of claim 1, wherein the output terminal of the main sound body circuit is electrically connected with an output circuit inside the box body (1).
4. The hi-fi stereo set according to claim 1, wherein the pre-amplifier circuit is configured to amplify the external power input pressure signal to obtain an amplified analog pressure signal, and output the amplified analog pressure signal to the overheat protection circuit, the overheat protection circuit is configured to detect the temperature of the whole circuit in real time, and send a power-off signal according to the detected temperature, the silent operation circuit is configured to control the circuit to start with alternating current and operate with direct current, and ensure that the circuit operates silently, and the main circuit is configured to reduce total harmonic distortion of the stereo set and ensure normal output of the stereo set.
5. The hi-fi stereo set of claim 1, wherein the pre-amplifier circuit comprises a diode VD1, a capacitor C1, a fixed resistor R1, a fixed resistor R2 and a capacitor C2, the capacitor C1 has a capacitance of 10F, the capacitor C2 has a capacitance of 15F, the fixed resistor R1 has a resistance of 5k Ω, and the fixed resistor R2 has a resistance of 3k Ω.
6. The high-fidelity sound box as claimed in claim 1, wherein the overheat protection circuit comprises a resistance wire R3, a resistance wire R4, a resistance wire R5, a resistance wire R6 and a thermistor PTC, wherein the resistance wire R3 has a resistance value of 5k Ω, the resistance wire R4 has a resistance value of 2k Ω, the resistance wire R5 has a resistance value of 3k Ω, and the resistance wire R6 has a resistance value of 5k Ω.
7. The hi-fi equipment as claimed in claim 1, wherein the silent running circuit comprises a contact point KM1, a contact point KM2, a fixed value resistor R7, a fixed value resistor R8, a diode VD2, a diode VD3, a push button switch SB1 and a push button switch SB2, the fixed value resistor R7 has a resistance value of 6k Ω, the fixed value resistor R8 has a resistance value of 9k Ω, the fixed value resistor R9 has a resistance value of 11k Ω, and the fixed value resistor R10 has a resistance value of 15k Ω.
8. The hi-fi sound of claim 1, wherein the main circuit of the sound body comprises a fixed value resistor R9, a fixed value resistor R10, a fixed value resistor R11, a fixed value resistor R12, a fixed value resistor R13 and a capacitor C4, the fixed value resistor R9 has a resistance of 4.7k Ω, the fixed value resistor R10 has a resistance of 10k Ω, the fixed value resistor R11 has a resistance of 0.1k Ω, the fixed value resistor R12 has a resistance of 8k Ω, the fixed value resistor R13 has a resistance of 0.1k Ω, and the capacitor C4 has a capacitance of 10F.
9. A method for implementing hi-fi sound according to any one of claims 1 to 8, comprising the steps of:
s1, when the output power is 50W, under the condition that the frequency is 20kHz, the total harmonic distortion is 0.02%;
s2, when the output power is 50W, under the condition that the frequency is 1kHz, the total harmonic distortion is 0.002%;
s3, when the power supply voltage is +/-15V, the output linear dynamic range is +/-12V;
and S4, when the power supply voltage is +/-40V, the output linear dynamic range is +/-35V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110447422.3A CN112969131A (en) | 2021-04-25 | 2021-04-25 | High-fidelity sound box and implementation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110447422.3A CN112969131A (en) | 2021-04-25 | 2021-04-25 | High-fidelity sound box and implementation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112969131A true CN112969131A (en) | 2021-06-15 |
Family
ID=76281211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110447422.3A Pending CN112969131A (en) | 2021-04-25 | 2021-04-25 | High-fidelity sound box and implementation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112969131A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5510753A (en) * | 1993-11-23 | 1996-04-23 | Blade Technologies Inc. | Composite bridge amplifier with output overload and thermal protection |
| CN2370614Y (en) * | 1998-07-24 | 2000-03-22 | 庞熙 | Full electronic protective sound power amplifier power supply |
| CN2462619Y (en) * | 2001-01-16 | 2001-11-28 | 黄福远 | intelligent protecting audio amplifier |
| CN201490975U (en) * | 2009-05-14 | 2010-05-26 | 广州飞达音响专业器材有限公司 | Digital power amplifier |
| CN203166841U (en) * | 2013-03-25 | 2013-08-28 | 长沙理工大学 | Power supply processing circuit for audio power amplifier |
| CN205039783U (en) * | 2015-10-28 | 2016-02-17 | 中广核工程有限公司 | Power amplifier circuit of generator excited system emulation tester |
| CN205509985U (en) * | 2016-04-26 | 2016-08-24 | 南京铁道职业技术学院 | Wire communication amplifier |
| CN207410513U (en) * | 2017-09-15 | 2018-05-25 | 广东龙健实业有限公司 | A kind of digital power amplifier circuit |
| CN108683979A (en) * | 2018-07-11 | 2018-10-19 | 深圳市东微智能科技股份有限公司 | Mute circuit and audio frequency apparatus |
| JP2020182206A (en) * | 2019-09-17 | 2020-11-05 | 仲座 正也 | Speaker protection device |
| CN112367593A (en) * | 2020-11-26 | 2021-02-12 | 仁化县启航电子科技有限公司 | Sound system |
-
2021
- 2021-04-25 CN CN202110447422.3A patent/CN112969131A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5510753A (en) * | 1993-11-23 | 1996-04-23 | Blade Technologies Inc. | Composite bridge amplifier with output overload and thermal protection |
| CN2370614Y (en) * | 1998-07-24 | 2000-03-22 | 庞熙 | Full electronic protective sound power amplifier power supply |
| CN2462619Y (en) * | 2001-01-16 | 2001-11-28 | 黄福远 | intelligent protecting audio amplifier |
| CN201490975U (en) * | 2009-05-14 | 2010-05-26 | 广州飞达音响专业器材有限公司 | Digital power amplifier |
| CN203166841U (en) * | 2013-03-25 | 2013-08-28 | 长沙理工大学 | Power supply processing circuit for audio power amplifier |
| CN205039783U (en) * | 2015-10-28 | 2016-02-17 | 中广核工程有限公司 | Power amplifier circuit of generator excited system emulation tester |
| CN205509985U (en) * | 2016-04-26 | 2016-08-24 | 南京铁道职业技术学院 | Wire communication amplifier |
| CN207410513U (en) * | 2017-09-15 | 2018-05-25 | 广东龙健实业有限公司 | A kind of digital power amplifier circuit |
| CN108683979A (en) * | 2018-07-11 | 2018-10-19 | 深圳市东微智能科技股份有限公司 | Mute circuit and audio frequency apparatus |
| JP2020182206A (en) * | 2019-09-17 | 2020-11-05 | 仲座 正也 | Speaker protection device |
| CN112367593A (en) * | 2020-11-26 | 2021-02-12 | 仁化县启航电子科技有限公司 | Sound system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1741374B (en) | Amplifying device | |
| CN112969131A (en) | High-fidelity sound box and implementation method thereof | |
| CN209546934U (en) | Invariable power anti-dry electronic cigarette | |
| CN2912512Y (en) | ECG detection circuit with excellent noise suppressing function | |
| CN218568417U (en) | Integrated karaoke system with wireless touch screen | |
| CN203416398U (en) | Active noise reduction earphone circuit | |
| CN104735590A (en) | Sound equipment based on high pressure ionized air | |
| CN101420237A (en) | Monitoring circuit | |
| CN201716823U (en) | Carbon monoxide alarm used in bathroom | |
| CN205425009U (en) | Air current music cigar lighter | |
| CN203280878U (en) | Multifunctional electronic auxiliary medical device | |
| CN204929216U (en) | A quick charging and discharging circuit for control of power amplifier silence | |
| CN105744394B (en) | A kind of wireless microphone | |
| CN201438719U (en) | Circuit for call detecting and television with call reminder | |
| CN105721986B (en) | Power amplifier and speaker system | |
| CN216356648U (en) | Power amplifying circuit | |
| CN204425627U (en) | Based on the stereo set of high-voltage air ionizing | |
| WO2019020085A1 (en) | Sampling current processing circuit, power detection circuit and electromagnetic cooking device | |
| CN220085661U (en) | Control circuit of medical respiratory tract humidifying device | |
| CN202494759U (en) | Failure tracing detector for amplifying circuit | |
| CN201556261U (en) | Induction electric greeting device | |
| CN203491981U (en) | Amplifying circuit used for computer signal tuning | |
| CN211208736U (en) | Intelligent socket | |
| CN206865418U (en) | A kind of power control circuit of audio-frequency power amplifier | |
| CN215222151U (en) | Power frequency sine wave inversion driving circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210615 |
|
| RJ01 | Rejection of invention patent application after publication |