Power supply unit and used current converter

A technology of power supply device and converter, which is applied in the direction of electric light source, lighting device, output power conversion device, etc. It can solve the problems of high component assembly cost, low power supply efficiency, and volume occupation, and avoid the temperature rise of parts, Effects of improving power efficiency and reducing volume

Inactive Publication Date: 2003-05-07
HON HAI PRECISION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this typical power supply system needs to be converted layer by layer. Currently, the products on the market combine the rectifier / filter 11 and the reverse converter 12 into an additional adapter (additional adapter), which needs to be connected through connectors and cables. Connected to the inverter 13 and the step-down regulator 14; therefore, the efficiency of the power supply is low, only about 70%, and the cost of parts and assembly is high, and the appearance is also relatively bulky

Method used

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  • Power supply unit and used current converter
  • Power supply unit and used current converter
  • Power supply unit and used current converter

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Embodiment Construction

[0016] Similar functional elements in the following description use the same number.

[0017] refer to figure 2 , which is a block diagram of a power supply device of the present invention. exist figure 2 Among them, the power supply device includes: a rectifier / filter 21 , a direct current (DC-DC) converter 22 and a direct current (DC-AC) converter 23 . Such as figure 2 As shown, an input end of the rectifier / filter 21 is connected to an external AC power source for converting the input AC voltage (for example, the general room electricity is 90-132V (AC) or 180-264V (AC)) into DC Voltage output (for example, the voltage value of point M in the figure is 120-190V or 250-380V (DC)). The DC-to-DC converter 22 and the DC-to-AC converter 23 are different from a typical three-level power supply system, and are connected in parallel to the output end of the rectifier / filter so as to shorten the input AC voltage to the required output voltage between stages and increase its ...

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Abstract

In the invented power device, the rectifier / filter, the circuit changer and the current converter are combined so as to reduce the size and raise the power supply efficiency. The power device includes rectifier / filter, the DC / DC circuit changer and the DC / AC current converter. The rectifier / filter is connected to the AC input end in order to convert the AC to DC. The DC / DC circuit changer and the DC / AC current converter supply the power concurrently, and their one end is connected to the output end of the rectifier / filter as same time. The DC / DC circuit changer converts the input DC voltage to the fixed lowered DC voltage in order to supply the power to the system. The DC / AC current converter converts the DC voltage to the higher AC voltage to supply the power to luminous tubes.

Description

technical field [0001] The present invention relates to a power supply system, in particular to a structure with multi-level input voltage, which combines rectification / filter and converter (converter) lines with converter (inverter), so as to reduce volume and improve power supply efficiency. Background technique [0002] Today's indoor power supply system is dominated by AC, and most of them are in the range of 90-264V (AC), for example, typically 90-132V (AC) or 180-264V (AC). However, in current liquid crystal displays, in addition to requiring a lower-voltage DC power supply to supply power to the general circuits in the display, such as circuits for controlling image signals, a higher-voltage AC power supply is also required to provide lighting discharge for power supply. Lamp powered. For example, in a notebook computer LCD panel with a single lamp, a power supply of about 7-21V (DC) is required, while in a multi-lamp LCD display, different f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/00H05B41/28
Inventor 范姜哲辰江怡诏
Owner HON HAI PRECISION IND CO LTD
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