Power supplier with medium voltage direct current

A technology of power supply device and DC voltage, which is applied in the direction of conversion equipment without intermediate conversion to AC, irreversible AC power input conversion to DC power output, etc., which can solve the problems of large power consumption, inability to improve performance, poor efficiency, etc.

Inactive Publication Date: 2004-12-08

ZIPPY TECH

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AI-Extracted Technical Summary

Problems solved by technology

[0004] In the traditional design, the energy of large wattage is obtained from the 12V (5V) low-voltage end of the conversion unit (the number of lamp tubes used in large-scale LCD displays is many, up to 20-30), so hundreds of watts of low-voltage are required However, these power supply terminals obtained from the low-voltage power supply module have to go through the low-effic...

Abstract

A medium voltage DC power supply device used to provide the medium and low DC voltage comprises: a power input unit, a rectify unit, and a conversion unit. After the power input unit makes the voltage input to the rectify unit, the rectify unit rectifies it and outputs a medium DC voltage. After the other part of the medium DC voltage is processed through the conversion unit, the whole DC power supply can not only provide low voltage power supply, but also have direct medium voltage supply, it makes the power supply for information home appliance more flexible and efficiency.

Application Domain

Ac-dc conversion without reversalApparatus without intermediate ac conversion

Technology Topic

Home applianceDc voltage +3

Image

Examples

Experimental program(1)

Example Embodiment

[0011] The detailed content and technical description of the present invention are described as follows with the accompanying drawings:

[0012] See figure 2 Shown is a circuit block diagram of the power supply device with medium voltage direct current according to the present invention. As shown in the figure: the power supply device with medium voltage DC of the present invention includes: a power input unit 1, a rectifier unit 2, a conversion unit 3, and a medium voltage DC voltage is directly output from the output terminal of the rectifier unit 2 , In order to break through the traditional power supply device that only provides low voltage design, allowing users to use a larger flexible space; at the same time, it can achieve the purpose of saving loss and improving performance.

[0013] The aforementioned power input unit 1 is used to provide an AC voltage of 110-220V;

[0014] The rectifier unit 2 has an input terminal 21 for inputting the above-mentioned AC power supply. The rectifier unit 2 rectifies the AC power supply into a DC voltage output with a medium voltage of about 150DCV to 300DCV. The rectified DC voltage is respectively output by the first rectifier unit 2. One and two output terminals 22, 23 output;

[0015] The conversion unit 3 is connected to the second output terminal 23 of the rectification unit 2 to convert the medium voltage DC voltage output by the rectification unit 2 into a low voltage DC voltage (such as ±5V, ±12V, ±24V, etc.) 31 Output to provide low DC power required by other circuits of this device;

[0016] When the power input unit 1 provides an AC power input to the rectifier unit 2, the rectifier unit 2 rectifies the AC power into a medium voltage DC power supply (150DCV to 300DCV) for output, and a part of the medium voltage DC voltage is output to the conversion unit 3. Converted into a low-voltage DC voltage 31 output, so that the entire DC power supply device not only has low-voltage power supply, but also direct medium-voltage power supply, making information appliances in the PC era more flexible and efficient in power supply.

[0017] See image 3 Shown is a schematic diagram of another embodiment of the present invention. As shown in the figure: the rectifier unit 2 used in the integrated information appliance power supply device of the present invention rectifies the AC voltage into a medium voltage DC voltage output. The rectifier unit 2 can adopt half-wave bridge rectification or full-wave bridge rectification. , Or it has a pre-regulated method to convert the AC voltage into a medium voltage DC voltage output.

[0018] At the same time, a switching unit 4 is connected between the half-wave or full-wave bridge rectifier circuit. The switching unit 4 can be either a mechanical switch or an electronic switch. When the rectifier unit 2 must be a half-wave or full-wave bridge During the rectification process, the switching unit 4 can be used for switching.

[0019] See Figure 4 Shown is a schematic diagram of another embodiment of the present invention. As shown in the figure: the rectifier unit 2 used in the integrated information appliance power supply device of the present invention can utilize at least one half-wave or full-wave voltage doubler unit 5 composed of at least one capacitor and diode to convert the input AC voltage Double the voltage into a medium voltage DC voltage output.

[0020] Further, the conversion unit 3 used in the present invention can be in any form of multiple groups, or a single group, or positive and negative power supply modes.

[0021] The foregoing descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

PUM

Description & Claims & Application Information

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