Standby control circuit and television set
A control circuit and control module technology, which is applied in the direction of TV, color TV, color TV parts, etc., can solve the problems of high cost, difficult safety regulation, complex standby circuit and other problems, and achieve low cost, simple circuit and high performance The effect of low consumption
Active Publication Date: 2013-09-18
SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
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Problems solved by technology
[0005] The purpose of the present invention is to provide a standby control circuit, which aims to solve the disadvantages of the prior art standby circuit, such as complex circuit, difficult safety regulation, high cost, or loads such as standby indicator light and infrared receiver cannot work normally, etc.
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[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0019] refer to figure 1 , a circuit principle block diagram of a standby control circuit provided by an embodiment of the present invention.
[0020] A standby control circuit, comprising sequentially connected EMI filter module 2, rectifier filter module 3, transformer module 4, output rectifier filter module 5, the input terminal of EMI filter module 2 is connected to power supply 1, and the output terminal of output rectifier filter module 5 is connected to Load 6; also includes a PWM control module 7 for controlling the working state of the transformer module 4, the start-up terminal of the PWM control module 7 is connected to the output terminal of the EMI filter module 2, the switch signal output terminal is connected to the controlled terminal of the transformer module 4, and the power input Terminate the second power supply ...
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The invention relates to the field of power sources, and provides a standby control circuit and a television set. The standby control circuit comprises an EMI (electro-magnetic interference) filtration module, a rectification filtration module, a transformer module, an output rectification filtration module, a PWM (pulse-width modulation) control module, a voltage stabilization feedback module, an energy storage module, a voltage comparison module, a standby signal input module and a standby control module, wherein an input end of the EMI filtration module is connected with a power source; and an output end of the output rectification filtration module is connected with a load. With the adoption of the standby control circuit, the energy storage module can be momentarily charged automatically and intermittently at the condition that the PWM control module is in an intermittent working state when the television set is in a standby mode; after that, the energy storage module supplies power for the load for a long time; and the circuit is simple, and the cost is low. Relative to the PWM control module in a normal open state in the prior art, the power consumption of the PWM control module is lower to the power consumption which is only capable of maintaining one indicator light.
Description
technical field [0001] The invention relates to the field of electrical circuits, in particular to an intermittent power supply standby low power consumption control circuit and a television set. Background technique [0002] With the development of society, the awareness of energy saving has been paid more and more attention by consumers. However, the power supplies of televisions, computers, air conditioners, refrigerators and other electrical equipment have high standby power consumption. According to the survey, the electricity bills due to the standby power consumption of electrical equipment are nearly 100 million yuan each year. [0003] However, the existing "intermittent operation mode" electrical standby circuit uses relays, CPU control, super capacitors and other circuit modules, which have the disadvantages of high cost, complex circuit, difficult safety regulation, and short service life of relay switches; in addition, the use of "zero power Although the standb...
Claims
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IPC IPC(8): H04N5/63
Inventor 鲍晓杰杨寄桃陈建忠庄万春
Owner SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD