Universal super constant voltage power amplifier at home and abroad

Abstract

The invention discloses a domestic and overseas universal super constant voltage power amplifier. The system comprises an automatic voltage conversion module or a cheap change-over switch or a special module directly customized for an outlet, a high-efficiency power conversion circuit and a multi-mode audio output module, the automatic voltage conversion module can automatically select a 220V or 110V working mode according to the voltage of an external power supply; the high-efficiency power conversion circuit optimizes a power factor through a digital power supply management technology, and improves the power conversion efficiency. The multi-mode audio output module supports a plurality of output modes such as push-pull output, single-ended output, electron tube output, module direct output or module connection with a matching transformer. A traditional heavy transformer and a complex high-frequency switching power supply are removed, the size and the weight of the system are remarkably reduced, the power amplification system is more compact and convenient to transport and install, the digital power management technology is adopted, the power conversion process can be optimized, electric energy loss is reduced, and the overall energy efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of audio power amplifier, in particular to a universal super constant voltage power amplifier at home and abroad. BACKGROUND

[0002] With the increasing demand for high-quality audio output in modern audio systems, audio power amplifier technology is also continuously developing. Traditional audio power amplifiers often use transformers or high-frequency switching power supplies (SMPS) to provide power for the power amplifier circuit. These power adapters not only have large size and heavy weight, but also have low efficiency, poor heat dissipation, and other problems. More importantly, the larger the output power of the power amplifier system, the greater the capacity of the power adapter needs to be increased, which leads to an increase in device size, cost, and affects the reliability and stability of the system.

[0003] In order to solve these problems, in recent years, some research has tried to use more efficient and portable power supply solutions. By choosing the right technology, you can eliminate the bulky transformer, improve power conversion efficiency, maintain high-efficiency output of the power amplifier system, reduce energy consumption, and improve system stability and reliability.

[0004] However, the power adapter of the prior art usually relies on a complex switching power supply circuit, or must be additionally equipped with a special power conversion module, which still cannot solve the problems of cost, size, weight, complexity, etc. Especially in multi-region applications, audio power amplifiers need to support different voltages of power supply, which adds a lot of challenges to designers.

[0005] In traditional audio power amplifier systems, the power adapter (such as a transformer or high-frequency switching power supply) is an important component, responsible for converting external power (such as 220V or 110V mains) into a voltage and current suitable for the power amplifier circuit to work. These traditional power adapters have the following problems:

[0006] Large size and heavy weight: Transformers are often bulky and heavy, limiting the portability and compactness of the power amplifier system;

[0007] Low efficiency and high heat generation: Traditional power adapters usually have low efficiency and high heat generation, which not only affects the stability of the power amplifier system, but also increases the need for additional heat dissipation design;

[0008] Poor adaptability: Power adapters are usually designed for specific voltages, such as when used in different countries / regions, which increases the complexity and cost of the product;

[0009] High cost: As the power of the power amplifier increases, the capacity of the required power adapter also needs to be increased, which leads to an increase in system cost.

[0010] For this purpose, we propose a universal super constant voltage amplifier for both domestic and overseas markets. Summary of the Invention

[0011] To achieve the above objectives, the present invention provides the following technical solutions: a universal super constant voltage power amplifier for both domestic and international use, the system comprising an automatic voltage conversion module, a high-efficiency power conversion circuit, and a multi-mode audio output module; the automatic voltage conversion module can automatically select 220V or 110V operating mode according to the external power supply voltage; the high-efficiency power conversion circuit optimizes the power factor and improves power conversion efficiency through digital power management technology; the multi-mode audio output module supports multiple output modes such as push-pull output, single-ended output, tube output, and module direct output.

[0012] Preferably, the automatic voltage conversion module includes an intelligent voltage detection circuit, a switch circuit and a micro control unit, which can detect the external power supply voltage in real time and automatically select the working mode according to the input voltage.

[0013] Preferably, the high-efficiency power conversion circuit adopts digital power management technology and has overload protection, short circuit protection and over-temperature protection functions to ensure that the power amplifier system operates stably in various environments.

[0014] Preferably, the audio output module supports multi-impedance matching transformer output, and can select a suitable output mode according to the requirements of different audio equipment.

[0015] Preferably, the intelligent heat dissipation system includes high-efficiency heat exchange materials and an automatic fan control system, which can automatically adjust the speed of the heat dissipation fan according to the operating temperature of the power amplifier to maintain the stability of the power amplifier system under high load conditions.

[0016] Preferably, the automatic voltage conversion module adopts efficient switching power supply technology and integrates voltage regulation and protection functions to ensure that the power amplifier system can work normally in both 220V and 110V power supply voltage environments.

[0017] Compared with the prior art, the present invention provides a universal super constant voltage power amplifier at home and abroad, which has the following features:

[0018] Beneficial effects:

[0019] This universal super constant voltage amplifier eliminates the traditional bulky transformer and complex high-frequency switching power supply, significantly reducing the system's size and weight. This makes the amplifier system more compact and easier to transport and install. It utilizes digital power management technology to optimize the power conversion process, reduce power loss, and improve overall energy efficiency. It also eliminates redundant components found in traditional power adapters, effectively saving metal materials and electronic components, and meeting environmental protection requirements.

[0020] 2、The domestic and foreign universal super constant voltage power amplifier, the system can automatically adapt to 220V and 110V power input, avoids the trouble of manually replacing the power adapter, meets the power standards of different regions in the world, has wide market applicability, and users can freely select different audio output modes (such as push-pull output, single-ended output, electronic tube output, etc.), so that the power amplifier system can flexibly adapt to various audio equipment and use scenarios, and more rich audio effects can be provided.

[0021] 3、The domestic and foreign universal super constant voltage power amplifier, through the intelligent heat dissipation control system, the power amplifier can automatically adjust the fan speed when running under high load, effectively reduces the temperature, prevents the system from malfunctioning due to overheating, improves the stability and reliability of the system, and compared with the traditional audio power amplifier system, the power amplifier system of the application removes the power adapter and transformer through optimized design, reduces the manufacturing cost, improves the stability and reliability of the power amplifier system, and reduces the cost of later maintenance and replacement of the power adapter. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the application will be described below in a clear and complete manner. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0023] EMBODIMENT

[0024] Embodiment of the domestic and foreign universal super constant voltage power amplifier

[0025] The domestic and foreign universal super constant voltage power amplifier, the system includes an automatic voltage conversion module, a high-efficiency power conversion circuit and a multi-mode audio output module; the automatic voltage conversion module can automatically select 220V or 110V working mode according to the external power voltage; the high-efficiency power conversion circuit optimizes the power factor through digital power management technology and improves the power conversion efficiency; and the multi-mode audio output module supports multiple output modes such as push-pull output, single-ended output, electronic tube output and module direct output.

[0026] Specifically, the automatic voltage conversion module includes an intelligent voltage detection circuit, a switching circuit and a micro control unit, can detect the external power voltage in real time and automatically select the working mode according to the input voltage.

[0027] Specifically, the high-efficiency power conversion circuit adopts digital power management technology, has overload protection, short-circuit protection and over-temperature protection functions, and ensures stable operation of the power amplifier system in various environments.

[0028] Specifically, the audio output module supports multiple impedance matching transformers, allowing for selection of appropriate output modes based on the requirements of different audio equipment.

[0029] Specifically, the intelligent cooling system includes high-efficiency heat exchange materials and an automatic fan control system, which can automatically adjust the speed of the cooling fan based on the operating temperature of the power amplifier, maintaining the stability of the power amplifier system under high load conditions.

[0030] Specifically, the automatic voltage conversion module uses high-efficiency switching power supply technology and integrates voltage regulation and protection functions to ensure that the power amplifier system can operate normally under both 220V and 110V power supply voltages.

[0031] By the above technical scheme, in the application, the traditional bulky transformer and complex high-frequency switching power supply are removed, the volume and weight of the system are significantly reduced, the power amplifier system is more compact, convenient to transport and install, the digital power management technology is adopted, the power conversion process can be optimized, the power loss is reduced, and the overall energy efficiency is improved. At the same time, the redundant components in the traditional power adapter are removed, the metal materials and electronic components are effectively saved, and the green environmental protection requirement is met. The system can automatically adapt to 220V and 110V power input, without the trouble of manually replacing the power adapter, meets the power standards in different regions around the world, has wide market applicability, users can freely select different audio output modes (such as push-pull output, single-ended output, electronic tube output, etc.) according to needs, so that the power amplifier system can flexibly adapt to various audio equipment and use scenarios, and provide more rich audio effects. Through the intelligent heat dissipation control system, the power amplifier can automatically adjust the fan speed when running under high load, effectively reduce the temperature, prevent the system from malfunctioning due to overheating, and improve the stability and reliability of the system. Compared with the traditional audio power amplifier system, the application optimizes the design, removes the power adapter and transformer, and reduces the manufacturing cost. The stability and reliability of the power amplifier system are also improved, and the cost of later maintenance and replacement of the power adapter is reduced. The present manufacturing fixed voltage power amplifier; fixed resistance power amplifier cannot be directly powered by mains power, and must be powered by a power supply with multiple voltages and multiple power supply modes, such as a transformer or a switching power supply. When the power amplifier is working at full load, not only the power amplifier circuit generates heat, but also the power supply circuit generates a large amount of heat, thereby reducing the reliability and stability of the entire machine. Moreover, the greater the output power of the power amplifier, the larger the power adapter needs to be. (The power adapter is too large to waste, and too small to overload) The new technology power amplifier can use two power sources directly: 220V in China and 110V abroad. By a simple switch, the working mode of 220V or 110V can be selected. An automatic conversion circuit can also be used to realize the working mode of 220V or 110V, but the circuit is slightly more complex. The new technology has the following characteristics: 1. The bulky transformer or complex high-frequency switching power supply is completely eliminated, the conversion rate is improved, and the entire machine becomes simple, small in size, light in weight, and high in power. 2. Another advantage is that regardless of the wattage of the machine, the cost of the entire machine will not double as the wattage increases. 3. Since the power adapter is no longer necessary, the audio output part can be freely matched with the appropriate circuit according to the needs of the use scenario, such as push-pull output, single-ended output, electronic tube output, module direct output, multi-impedance matching transformer output, etc. 4. The manufacturing process of the new technology can save a large amount of metal resources and electronic components for the society, which is equivalent to being more environmentally friendly.

[0032] Implementation of automatic voltage conversion module:

[0033] The automatic voltage conversion module adopts a combination of a micro control unit (MCU) and a voltage detection circuit to detect the input voltage (220V or 110V) in real time. When the input voltage changes, the voltage detection circuit sends a signal to the MCU, which controls the switching circuit to adjust the output voltage, ensuring that the power amplifier circuit can work stably under different voltage conditions. The module also integrates over-voltage and over-current protection functions to prevent damage to the system caused by abnormal power supply.

[0034] Implementation of high-efficiency power conversion circuit:

[0035] The high-efficiency power conversion circuit uses digital control switching power supply technology, with high power factor and low total harmonic distortion (THD) characteristics, which can efficiently convert input voltage into suitable power for power amplifier circuit. At the same time, the circuit integrates overload, over-temperature, short circuit and other protection mechanisms to ensure the safety of the power amplifier system under extreme working conditions.

[0036] Implementation of intelligent heat dissipation system:

[0037] The heat dissipation system uses high-efficiency aluminum alloy heat sink combined with intelligent fan, through temperature sensor to monitor the working temperature of power amplifier in real time. When the power amplifier load increases and the temperature rises, the temperature sensor will send a signal to the control system to automatically adjust the fan speed to speed up heat dissipation and keep the power amplifier system within a safe temperature range.

[0038] Implementation of audio output module:

[0039] The invention supports multiple audio output modes, including push-pull output, single-ended output, tube output, and module output. Through modular design, users can choose the appropriate output mode according to their needs, making it easy to use with different types of sound equipment. Multi-impedance matching transformer supports the connection of different impedance sound equipment, providing more flexible audio adjustment.

[0040] The other module can also flexibly adjust internal parameters according to the size of the export amount. If the amount is still large, it is worth adjusting it as an export-only module, so we can save the selection switch or automatic selection circuit, making the whole machine simpler and more concise.

[0041] In actual use, different impedance matching transformers can be used according to different use environments, for example, a supermarket used indoors does not need a matching transformer and can be directly connected to a sound column, because each sound column has a matching transformer, thus saving some costs.

[0042] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. Universal super constant voltage power amplifier at home and abroad, characterized by: The system includes an automatic voltage conversion module, a high-efficiency power conversion circuit, and a multi-mode audio output module; the automatic voltage conversion module can automatically select 220V or 110V operating mode according to the external power supply voltage; the high-efficiency power conversion circuit optimizes the power factor and improves power conversion efficiency through digital power management technology; the multi-mode audio output module supports multiple output modes such as push-pull output, single-ended output, tube output, and module direct output; Current fixed-voltage and fixed-resistance amplifiers cannot be powered directly by mains electricity. They must be powered by a power adapter, which comes in various voltages and power supply methods, such as a transformer or a switching power supply. When the amplifier is fully loaded, not only does the amplifier circuit heat up, but the power supply circuit also heats up significantly, reducing the reliability and stability of the entire unit. Furthermore, the greater the output power of the amplifier, the larger the power adapter must be. (A power adapter that is too large is wasteful, while a power adapter that is too small will overload the system.) The amplifier manufactured by the new technology can be directly powered by two power sources: domestic 220V and foreign 110V. Through a simple switch, you can choose the 220V or 110V working mode. You can also use an automatic conversion circuit to achieve the 220V or 110V working mode, but the circuit is slightly more complicated. The new technology features are:

1. It completely eliminates the need for bulky transformers or complex high-frequency switching power supplies, improves the conversion rate, and simplifies the entire machine; it is small in size, light in weight, and high in power.

2. Another greater advantage is that no matter what wattage the machine is manufactured, the cost of the entire machine will not double as the wattage increases with the old technology.

3. Since the burden of having to use a power adapter is eliminated, the audio output part can be freely matched with a suitable circuit according to the needs of the usage scenario, such as (push-pull output, single-ended output, tube output, module direct output, multi-impedance matching transformer output, etc.).

4. The manufacturing process of the new technology can save a large amount of metal resources and electronic components for society, which is equivalent to being more environmentally friendly.

2. The universal super constant voltage power amplifier according to claim 1, characterized in that: The automatic voltage conversion module includes an intelligent voltage detection circuit, a switch circuit and a micro control unit, and can detect the external power supply voltage in real time and automatically select an operating mode according to the input voltage.

3. The universal super constant voltage power amplifier according to claim 1, characterized in that: The high-efficiency power conversion circuit adopts digital power management technology and has overload protection, short circuit protection and over-temperature protection functions, ensuring stable operation of the power amplifier system in various environments.

4. The universal super constant voltage power amplifier according to claim 1, characterized in that: The audio output module supports multi-impedance matching transformer output and can select the appropriate output mode according to the needs of different audio equipment.

5. The universal super constant voltage power amplifier according to claim 1, characterized in that: The intelligent heat dissipation system includes high-efficiency heat exchange materials and an automatic fan control system, which can automatically adjust the speed of the heat dissipation fan according to the operating temperature of the power amplifier to maintain the stability of the power amplifier system under high load conditions.

6. The universal super constant voltage power amplifier according to claim 1, characterized in that: The automatic voltage conversion module adopts efficient switching power supply technology and integrates voltage regulation and protection functions to ensure that the power amplifier system can work normally in both 220V and 110V power supply voltage environments. The present invention discloses a universal super constant voltage power amplifier for both domestic and international use. The system includes an automatic voltage conversion module, or a module that uses an inexpensive conversion switch or is directly customized for export, a high-efficiency power conversion circuit, and a multi-mode audio output module. The automatic voltage conversion module can automatically select a 220V or 110V operating mode according to the external power supply voltage. The high-efficiency power conversion circuit optimizes the power factor and improves power conversion efficiency through digital power management technology. The multi-mode audio output module supports multiple output modes, including push-pull output, single-ended output, tube output, direct module output, or module connected to a matching transformer. By eliminating the traditional bulky transformer and complex high-frequency switching power supply, the volume and weight of the system are significantly reduced, making the power amplifier system more compact and easier to transport and install. The use of digital power management technology can optimize the power conversion process, reduce power loss, and improve overall energy efficiency.