Power supply processing circuit

Abstract

The invention discloses a power supply processing circuit, which comprises a filter, the input end of the filter is connected with commercial power, and a switch K0 is connected between one input end of the filter and the commercial power; the input end of the power transformer is connected with the output end of the filter, and a relay KT is connected between one input end of the power transformer and the output end of the filter; the input end of the rectifier is connected with the output end of the power transformer; the input end of the synchronous sine wave signal generator is connected with the output end of the filter; one input end of the error amplifier is connected with the output end of the filter; and one input end of the power amplifier is connected with the output end of the error amplifier. The performance of the whole regenerative power supply system is improved, and the tone quality of the sound equipment electric equipment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of signal processing, and in particular to a power processing circuit. Background Art

[0002] The distortion of the power grid seriously affects the normal operation of audio equipment and other equipment with high requirements for power quality. In particular, audio equipment will suffer from abnormal vibration and noise in its power transformer due to distorted mains electricity. The sound effects will be manifested as dynamic compression, insufficient frequency response extension, loss of details, etc., making it difficult for audio equipment to perform as it should. Summary of the Invention

[0003] In view of this, an embodiment of the present invention hopes to provide a power processing circuit to solve or alleviate the technical problems existing in the prior art.

[0004] The technical solution of the embodiment of the present invention is implemented as follows: a power processing circuit includes a filter, wherein the input end of the filter is connected to the mains, and a switch K0 is connected between one of the input ends of the filter and the mains;

[0005] A power transformer, wherein the input end of the power transformer is connected to the output end of the filter, and a relay KT is connected between one of the input ends of the power transformer and the output end of the filter;

[0006] a rectifier, wherein an input end of the rectifier is connected to an output end of the power transformer;

[0007] A synchronous sine wave signal generator, wherein the input end of the synchronous sine wave signal generator is connected to the output end of the filter;

[0008] an error amplifier, wherein one input terminal of the error amplifier is connected to the output terminal of the filter, and the other input terminal of the error amplifier is connected to the output terminal of the synchronous sine wave signal generator;

[0009] A power amplifier, one of the input terminals of the power amplifier is connected to the output terminal of the error amplifier, the other three input terminals of the power amplifier are respectively connected to the output terminals of the rectifier, and the output terminal of the power amplifier is connected to the output terminal of the filter.

[0010] In the above embodiment, the mains power is composed of a live wire (L), a neutral wire (N) and a ground terminal (EGND), and the switch K0 is located on the live wire (L).

[0011] In the above embodiment, one of the contacts on the relay KT is connected to one of the output terminals of the rectifier.

[0012] In the above embodiment: an electrolytic capacitor is connected to the output end of the rectifier, and the electrolytic capacitor is located between the other three input ends of the power amplifier and the rectifier.

[0013] In the above embodiment: one of the input terminals of the synchronous sine wave signal generator and the relay KT are on the same branch.

[0014] In the above embodiment, the relay KT is a relay with a time delay of 30 seconds.

[0015] In the above embodiment, the output end of the power amplifier and the relay KT are on the same branch.

[0016] The embodiment of the present invention adopts the above technical solution, which has the following advantages:

[0017] It solves the problem that the distortion of the power grid seriously affects the normal operation of audio equipment and other equipment with high requirements for power quality. In particular, audio equipment, distorted mains electricity will cause its power transformer to vibrate and make abnormal noises, which manifests as dynamic compression, insufficient frequency response extension, loss of details, etc. in the sound effect, making it difficult for audio equipment to play its due role. It also improves the performance of the entire regenerative power supply system and the sound quality of audio equipment.

[0018] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is the principle circuit diagram of the present invention. DETAILED DESCRIPTION

[0021] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be considered as illustrative in nature and not restrictive.

[0022] It should be noted that the terms "first," "second," "symmetrical," "array," etc. are used only to distinguish descriptions from positional descriptions and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, limitations on features such as "first" and "symmetrical" may explicitly or implicitly include one or more of these features; similarly, when the number of certain features is not limited in the form of words such as "two" or "three," it should be noted that these features also explicitly or implicitly include one or more of the number of features.

[0023] In the present invention, unless otherwise expressly specified or limited, terms such as "installation," "connection," and "fixation" should be understood broadly; for example, they may refer to fixed connection, detachable connection, or integral molding; they may refer to mechanical connection, direct connection, welding, or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specification and drawings in conjunction with specific circumstances.

[0024] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] like Figure 1 As shown, an embodiment of the present invention provides a power processing circuit, including a filter, wherein the input end of the filter is connected to the mains, and a switch K0 is connected between one of the input ends of the filter and the mains;

[0026] A power transformer, wherein the input end of the power transformer is connected to the output end of the filter, and a relay KT is connected between one of the input ends of the power transformer and the output end of the filter;

[0027] a rectifier, wherein an input end of the rectifier is connected to an output end of the power transformer;

[0028] A synchronous sine wave signal generator, wherein the input end of the synchronous sine wave signal generator is connected to the output end of the filter;

[0029] an error amplifier, wherein one input terminal of the error amplifier is connected to the output terminal of the filter, and the other input terminal of the error amplifier is connected to the output terminal of the synchronous sine wave signal generator;

[0030] A power amplifier, one of the input terminals of the power amplifier is connected to the output terminal of the error amplifier, the other three input terminals of the power amplifier are respectively connected to the output terminals of the rectifier, and the output terminal of the power amplifier is connected to the output terminal of the filter.

[0031] In the embodiment of the present invention, specifically: the mains power is composed of a live wire (L), a neutral wire (N) and a ground terminal (EGND), and the switch K0 is located on the live wire (L).

[0032] In the embodiment of the present invention, specifically: one of the contacts on the relay KT is connected to one of the output terminals of the rectifier.

[0033] In the embodiment of the present invention, specifically: an electrolytic capacitor is connected to the output end of the rectifier, and the electrolytic capacitor is located between the other three input ends of the power amplifier and the rectifier.

[0034] In the embodiment of the present invention, specifically: one of the input terminals of the synchronous sine wave signal generator and the relay KT are on the same branch.

[0035] In the embodiment of the present invention, specifically: the relay KT is a relay with a delay of 30 seconds.

[0036] In the embodiment of the present invention, specifically: the output end of the power amplifier and the relay KT are on the same branch.

[0037] The present invention uses the following steps when working:

[0038] After turning on the power switch K0, the system enters its initial operating state. The power transformer is connected to the mains via the time-delay relay Kt for initial operating power. Simultaneously, all system components enter operation, and the power amplifier outputs an error voltage, which is connected in series with the mains to produce a low-distortion power supply. After a delay of approximately 30 seconds, the time-delay relay activates, switching the power transformer's input to the output (GND) for low-distortion power. During this switching process, the filter capacitor supplies power to the amplifier, maintaining normal system operation. From this point on, the system completes its startup phase and enters a stable operating state, achieving a self-powered, continuous low-distortion power supply.

[0039] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various modifications and substitutions within the technical scope disclosed in the present invention, and such modifications and substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A power processing circuit, characterized in that: include A filter, wherein the input end of the filter is connected to the mains, and a switch K0 is connected between one of the input ends of the filter and the mains; A power transformer, wherein the input end of the power transformer is connected to the output end of the filter, and a relay KT is connected between one of the input ends of the power transformer and the output end of the filter; a rectifier, wherein an input end of the rectifier is connected to an output end of the power transformer; A synchronous sine wave signal generator, wherein the input end of the synchronous sine wave signal generator is connected to the output end of the filter; an error amplifier, wherein one input terminal of the error amplifier is connected to the output terminal of the filter, and the other input terminal of the error amplifier is connected to the output terminal of the synchronous sine wave signal generator; A power amplifier, one of the input terminals of the power amplifier is connected to the output terminal of the error amplifier, the other three input terminals of the power amplifier are respectively connected to the output terminals of the rectifier, and the output terminal of the power amplifier is connected to the output terminal of the filter.

2. The power processing circuit according to claim 1, wherein: The commercial power is composed of a live wire (L), a neutral wire (N) and a ground terminal (EGND), and the switch K0 is located on the live wire (L).

3. The power processing circuit according to claim 1, wherein: One of the contacts on the relay KT is connected to one of the output terminals of the rectifier.

4. The power processing circuit according to claim 1, wherein: The output end of the rectifier is connected to an electrolytic capacitor, and the electrolytic capacitor is located between the other three input ends of the power amplifier and the rectifier.

5. The power processing circuit according to claim 1, wherein: One of the input terminals of the synchronous sine wave signal generator is on the same branch as the relay KT.

6. The power processing circuit according to claim 1, wherein: The output end of the power amplifier and the relay KT are on the same branch.

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