Wide voltage adaptive control converter

Abstract

The utility model discloses a wide voltage adaptive control converter, comprising an isolation housing, a control circuit board arranged in the isolation housing, and an input terminal and an output terminal arranged on the isolation housing. The control circuit board is provided with an input protection circuit, a wide voltage rectification circuit, a PWM power switch circuit, a control circuit, an output circuit and a silicon controlled voltage regulation circuit. The silicon controlled voltage regulating circuit is connected between the wide voltage rectifying circuit and the output circuit, and the output circuit is connected with the output terminal; and the control circuit detects the input voltage of the wide voltage rectification circuit and regulates the output voltage to 110V through the silicon controlled rectifier voltage regulation circuit. According to the utility model, the structure arrangement is reasonable, wide voltage input and automatic identification of input voltage are realized through cooperation of the control circuit and the silicon controlled voltage regulation circuit, stable output voltage is realized through the silicon controlled voltage regulation circuit, the use safety is improved, the EMI interference is reduced, the use reliability is improved, and the application range is widened.

Description

Technical Field

[0001] This utility model belongs to the field of voltage conversion technology, specifically relating to a wide voltage adaptive control converter. Background Technology

[0002] In some environments, there is a dual voltage system of 110V / 220V, which requires a corresponding controller. However, when a traditional 110V controller is directly connected to the 220V power grid, it lacks voltage adaptive capability, which can easily lead to capacitor explosion and fuse blowing, thus increasing the failure rate. At the same time, the temperature rise during use can reach 200℃, which can also easily cause transformer magnetic saturation and burnout. Furthermore, most of them use mechanical jumpers to switch voltage, which poses a significant risk of misoperation, thus limiting their applicability. Summary of the Invention

[0003] The purpose of this invention is to provide a wide voltage adaptive control converter with a reasonable structural design that is conducive to improving safety during use.

[0004] The technical solution to achieve the purpose of this utility model is a wide voltage adaptive control converter, including an isolation housing, a control circuit board disposed inside the isolation housing, an input terminal and an output terminal disposed on the isolation housing, and an input protection circuit, a wide voltage rectifier circuit, a PWM power switch circuit, a control circuit, an output circuit and a thyristor voltage regulation circuit disposed on the control circuit board;

[0005] The input terminal of the input protection circuit is connected to the input terminal, the input terminal of the wide voltage rectifier circuit is connected to the output terminal of the input protection circuit, the output terminal of the input protection circuit is connected to the PWM power switch circuit, and the control terminal of the control circuit is connected to the control terminal of the PWM power switch circuit, the wide voltage rectifier circuit, and the control terminal of the thyristor voltage regulation circuit.

[0006] The thyristor voltage regulation circuit is connected between the wide voltage rectifier circuit and the output circuit, and the output circuit is connected to the output terminal;

[0007] The control circuit detects the input voltage of the wide voltage rectifier circuit and adjusts the output voltage to 110V through the thyristor voltage regulation circuit.

[0008] A further preferred embodiment is that the input voltage of the input terminal is 110V-250V.

[0009] A further preferred embodiment is that the control circuit board is connected to an indicator light circuit;

[0010] When the input terminal receives 110V, the thyristor voltage regulator circuit outputs a full-wave output, and the indicator light circuit illuminates. When the input terminal receives 220V, the thyristor voltage regulator circuit outputs a half-wave output, and the indicator light circuit flashes slowly.

[0011] A further preferred embodiment is that the main chip of the control circuit is an FT61F023.

[0012] The main chip of the PWM power switch circuit is model KP311BWG.

[0013] A further preferred embodiment is that the input protection circuit is a fuse.

[0014] This utility model has positive effects: its structure is reasonably designed, and through the control circuit and the thyristor voltage regulation circuit, it can achieve a wide voltage input and automatically identify the input voltage. The output voltage is stable through the thyristor voltage regulation circuit, which helps to improve the safety of use. With the isolation shell, it helps to reduce EMI interference and improve the reliability and applicability of use. Attached Figure Description

[0015] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a circuit block diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the specific circuit of this utility model.

[0019] Reference numerals: 1. Isolation housing; 2. Control circuit board; 3. Input protection circuit; 4. Wide voltage rectifier circuit; 5. PWM power switch circuit; 6. Control circuit; 7. Output circuit; 8. Thyristor voltage regulation circuit; 9. Indicator light circuit; 10. Input terminal; 11. Output terminal. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0021] See Figures 1 to 3As shown, a wide voltage adaptive control converter includes an isolation housing 1 and a control circuit board 2 disposed inside the isolation housing. The isolation housing is provided with an input terminal 10 and an output terminal 11. In this embodiment, the isolation housing is a conventional structure of the prior art, which is beneficial to reduce EMI interference. In actual application, its input terminal adopts an irregularly shaped socket, and the depth of the irregularly shaped socket is 3mm shorter than that of the ordinary socket, which can physically prevent high voltage equipment from being inserted.

[0022] In this embodiment, the control circuit board is equipped with an input protection circuit 3, a wide-voltage rectifier circuit 4, a PWM power switch circuit 5, a control circuit 6, an output circuit 7, and a thyristor voltage regulator circuit 8; the input protection circuit is a fuse. The wide-voltage rectifier circuit is a conventional circuit in the prior art, so it is not described in detail, but simply applied. The main chip of the control circuit is FT61F023; the main chip of the PWM power switch circuit is KP311BWG. The fifth pin of the main chip detects the external voltage, determining whether it is 220V or 110V. The control circuit board is connected to an indicator light circuit 9; when the input terminal receives 110V, the thyristor voltage regulator circuit outputs a full-wave output, and the indicator light circuit illuminates; when the input terminal receives 220V, the thyristor voltage regulator circuit outputs a half-wave output, and the indicator light circuit flashes slowly. Furthermore, it is completely switched off during the reverse wave of the AC current.

[0023] In this embodiment, the input terminal of the input protection circuit is connected to the input terminal, the input terminal of the wide-voltage rectifier circuit is connected to the output terminal of the input protection circuit, the output terminal of the input protection circuit is connected to the PWM power switch circuit, and the control terminal of the control circuit is connected to the control terminal of the PWM power switch circuit, the wide-voltage rectifier circuit, and the control terminal of the SCR voltage regulator circuit. The SCR voltage regulator circuit is connected between the wide-voltage rectifier circuit and the output circuit, and the output circuit is connected to the output terminal. The control circuit detects the input voltage of the wide-voltage rectifier circuit and adjusts the output voltage to 110V through the SCR voltage regulator circuit. This ensures the stability and effectiveness of the output voltage. Meanwhile, the input voltage of the input terminal is 110V-250V.

[0024] This utility model has positive effects: its structure is reasonably designed, and through the control circuit and the thyristor voltage regulation circuit, it can achieve a wide voltage input and automatically identify the input voltage. The output voltage is stable through the thyristor voltage regulation circuit, which helps to improve the safety of use. With the isolation shell, it helps to reduce EMI interference and improve the reliability and applicability of use.

[0025] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural parts described in the instruction manual can also be processed without any doubt based on existing technical common sense. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0026] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. However, these obvious variations or modifications derived from the essential spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. A wide voltage adaptive control converter comprising an isolation housing, a control circuit board disposed within the isolation housing, input terminals and output terminals disposed on the isolation housing, characterized in that: The control circuit board is equipped with an input protection circuit, a wide voltage rectifier circuit, a PWM power switch circuit, a control circuit, an output circuit, and a thyristor voltage regulation circuit. The input terminal of the input protection circuit is connected to the input terminal, the input terminal of the wide voltage rectifier circuit is connected to the output terminal of the input protection circuit, the output terminal of the input protection circuit is connected to the PWM power switch circuit, and the control terminal of the control circuit is connected to the control terminal of the PWM power switch circuit, the wide voltage rectifier circuit, and the control terminal of the thyristor voltage regulation circuit. The thyristor voltage regulation circuit is connected between the wide voltage rectifier circuit and the output circuit, and the output circuit is connected to the output terminal; The control circuit detects the input voltage of the wide voltage rectifier circuit and adjusts the output voltage to 110V through the thyristor voltage regulation circuit.

2. The wide voltage adaptive control converter according to claim 1, characterized in that: The input voltage of the input terminal is 110V-250V.

3. The wide voltage adaptive control converter according to claim 1, characterized in that: The control circuit board is connected to an indicator light circuit; When the input terminal receives 110V, the thyristor voltage regulator circuit outputs a full-wave output, and the indicator light circuit illuminates. When the input terminal receives 220V, the thyristor voltage regulator circuit outputs a half-wave output, and the indicator light circuit flashes slowly.

4. A wide voltage adaptive control converter according to claim 1, characterized in that: The main chip of the control circuit is FT61F023; The main chip of the PWM power switch circuit is model KP311BWG.

5. A wide voltage adaptive control converter according to claim 1, characterized in that: The input protection circuit is a fuse.

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