Unlock instant, AI-driven research and patent intelligence for your innovation.

Device for turning off overdriven color TV set

A television and color technology, applied in the field of television, can solve the problems of poor protection performance/price ratio, burnout of color TVs, difficulty in mass production and application, etc., and achieve low cost, multiple protection functions, and stable and reliable overload protection

Inactive Publication Date: 2008-09-10
SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
View PDF3 Cites 2 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device for turning off overdriven color TV set
  • Device for turning off overdriven color TV set
  • Device for turning off overdriven color TV set

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] 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.

[0009] Example in Figure 4: [AC master switch K with relays may or may not be used]. The special-shaped composite tube and its related circuits are composed of the preamplifier tube A44 and the switch tube VK. Through the positive feedback branch formed by the resistor R68 and the capacitor C68, it is connected to the base of the amplifier tube A44 and the collector of the switch tube VK. Toggle advantages. Reduce the time of the switching tube VK on / off process passing through the amplification area, with the performance of a voltage comparator or a Schmitt trigger, and can be directly connected to the circuit for indirect sampling and detection of grid voltage, and can realize remote control or gri...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Scheme of power supply distribution of energy saving and multiple functional control technique is adopted in the invention. Flyback transformer through rectification loop in positive direction and negative direction forms different functional over loading sampling detection sources. Secondary side of switching mode power supply transformer through reversed polarity loop and like polarity rectification loop forms different functional over loading sampling detection sources. The said detection sources through different branches of pressure-sensitive switch parts are connected to a turning power off autolocking executive circuit in over loading. Thus, in various over loading condition, parts are protected in time of over loading occurs, fault will not be chained and extended.

Description

Technical field [0001] The invention mainly relates to the field of television technology. Background technique [0002] The prior art color TV overload protection circuit has a relatively single protection function. If multiple protection functions are required, it must be composed of multiple single protection circuits. The prior art protection circuit is relatively complicated, and it is often necessary to use the internal X-ray function of the integrated block or a microcontroller. CPU OPT customizes the matching of pins related to the overload function, which is also easy to be mis-controlled or out of control, and the cost of each protection circuit is high. Wherein, in the prior art line output stage overcurrent protection, the overcurrent sampling detection resistor is connected in series with the high potential end of the loop, and the potential difference between the overcurrent sampling detection resistor and the common terminal (ground) is very large, generally e...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/63H04N3/20H02H7/20
Inventor 戴俊
Owner SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD