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Colour television environmental protection energy saving and service life prolonging technology

A color TV and circuit technology, applied in the TV field, can solve problems such as poor protection performance/price ratio, difficulty in mass production and application, and burning of color TVs

Inactive Publication Date: 2004-03-03
戴俊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the disadvantage of poor performance / price ratio of overload protection in the existing technology, it is difficult to put into mass production and application
If the color TV is not equipped with a protection circuit, once a fault occurs, a larger fault will occur in a chain, especially the phenomenon of burning the color TV

Method used

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  • Colour television environmental protection energy saving and service life prolonging technology
  • Colour television environmental protection energy saving and service life prolonging technology
  • Colour television environmental protection energy saving and service life prolonging technology

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Embodiment Construction

[0013] The best way to realize this innovation will be described in detail below in conjunction with the accompanying drawings. It is no longer necessary to repeat what has been mentioned above or in combination with the existing technology or should be changed in the same way.

[0014]In order to overcome the two-way mutual interference between the AC grid incoming line and the transmission along the cable TV antenna, [Example in Figure 3] connect the pure self-inductors L1 and L2 without (power frequency) mutual inductance in series on the AC grid incoming line, which can reduce the power supply along the line. Symmetrical interference and asymmetrical interference of line bidirectional transmission, prolonging the conduction angle time of the rectifier, reducing the amplitude value of the rectification impulse current and its harmonic interference. It can also be used to replace the current limiting resistor (R20). In the figure, the anti-interference capacitors C051, C052...

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Abstract

Technical scheme of using combined type power supply, energy saving power supply distribution and multifunctional technique are adopted in the invention. The functions such as eliminating over current harm of starting surge impulsion through soft starting, pause function and over loading shut down function are added in the invention. The invention possesses advantages of environmental protection, energy saving, prolonging service life and high performance / cost ratio.

Description

Technical field [0001] The invention mainly relates to the field of television technology. Background technique [0002] Most of the color TVs in the prior art adopt a transformer-type (that is, parallel) switching power supply, which has a large impact amplitude on the current flowing through each rectification circuit and a short rectification conduction angle time. Not only the filter capacitor and the utilization rate of the power grid are low, but also the environment of the external power grid is very harmful. There are laws and regulations in various countries to forcibly limit the degree of harm to the environment caused by the harmonic current of rectifier tubes. Therefore, it is necessary to add an inductance resistor to suppress the harmonic current. However, many manufacturers are reluctant to adopt it due to the added cost. Can an environmentally friendly color TV power supply that is more energy-saving and energy-saving and has anti-interference suppression ...

Claims

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Application Information

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IPC IPC(8): H01F38/42H04N3/18H04N5/63
Inventor 戴俊
Owner 戴俊
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