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Liquid crystal display television (LCD TV) power system

A technology of power supply system and LCD TV, applied in the field of TV, can solve the problem of increasing consumer electricity bills, etc., and achieve the effects of ultra-low standby power consumption, meeting demanding requirements, and high voltage conversion efficiency

Inactive Publication Date: 2010-06-16
SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, while the LCD TV market continues to grow and develop, its power consumption problem has also attracted more attention. The higher power consumption of LCD TVs will directly increase consumers' electricity bills and deviate from the trend of energy conservation and environmental protection.

Method used

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  • Liquid crystal display television (LCD TV) power system
  • Liquid crystal display television (LCD TV) power system
  • Liquid crystal display television (LCD TV) power system

Examples

Experimental program
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Embodiment Construction

[0011] see figure 1 As shown, the LCD TV power supply system created by the present invention includes a relay connected to the AC input and a standby circuit, a filter circuit connected to the relay and a low-power standby control circuit, a rectifier circuit connected to the filter circuit, and a power factor connected to the rectifier circuit. A correction circuit, a DC-DC conversion circuit connected to the power factor correction circuit and a DC-AC sinusoidal high-voltage conversion circuit.

[0012] see figure 2 As shown, the standby circuit includes a PWM control chip and a transformer T101, wherein the PWM control chip and the transformer T101 form a single-ended flyback circuit, the secondary output of the transformer is a 5V DC voltage of ST5V, and the auxiliary winding of the transformer T101 outputs through the diode D103 A DC voltage of about 18V, which is used by PWM control chips and other chips.

[0013] see image 3 As shown, the low power consumption sta...

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PUM

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Abstract

The invention discloses an LCD TV power system, comprising a relay and a standby circuit which are respectively connected with an AC input, a filter circuit connected with the relay, a rectifier circuit connected with the filter circuit, and a power factor corrector circuit connected with the rectifier circuit, wherein the relay is also connected with a low power consumption standby control circuit; and the power factor corrector circuit is also connected with a DC-DC transfer circuit and a DC-AC sine high voltage transfer circuit. The LCD TV power system in the invention can provide corresponding voltage and current for each system of the LCD TV, has ultra-low standby power consumption, high voltage conversion efficiency in normal work, relatively simple system and large power of unit volume output, and fully satisfies rigorous requirements of the LCD TV on power supply.

Description

【Technical field】 [0001] The invention relates to the technical field of televisions, in particular to a liquid crystal television power supply system which can greatly improve the efficiency of the liquid crystal television power supply. 【Background technique】 [0002] At present, liquid crystal TV (LCD TV) has rapidly increased its penetration rate in the market by virtue of many advantages such as large screen, low thickness and high definition. LCD TV has become more and more popular with many consumers, and its market share continues to increase. . However, while the LCD TV market continues to grow, its power consumption problem has also attracted more attention. The higher power consumption of LCD TVs will directly increase consumers' electricity bills, and deviates from the trend of energy conservation and environmental protection. At the same time, the power supply of LCD TVs requires lightness, thinness, and high work efficiency. With the continuous increase of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/63
Inventor 王俊永
Owner SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
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