阅读说明：本技术 一种解决电视机短路危害并确保其电路安全的装置和技术 (Device and technology for solving short circuit hazard of television and ensuring circuit safety of television ) 是由 艾朝君 于 2017-07-04 设计创作，主要内容包括：本发明提出了一种解决电视机短路危害并确保其电路安全的装置和技术。本发明首先采用电流互感器从负载电流中取能量建立控制电路的电源,免除了由供给负载电力的交流电源建立控制电路所引起的交流干扰。同时采用电流互感器输出点改变为由电流源供电,这一关键变化促成控制电路电源不受负载短路或过流的影响,反而在负载短路或过流时,该电源的电力更加充足,保证了短路过流保护及时有效起控。在电视机发生短路时,断点开关立即启动,为交流开关控制器提供电源,直接控制无焦点交流开关控制交流电,开关时或发生短路时不产生电火花,大大减少电气火灾的发生率。加上开关次数不受限制和没有机械磨损,所以是一种长寿命、高可靠的超级安全开关。(the invention provides a device and a technology for solving the short-circuit hazard of a television and ensuring the circuit safety of the television. The invention firstly adopts the current transformer to take energy from the load current to establish the power supply of the control circuit, thus avoiding the AC interference caused by establishing the control circuit by the AC power supply supplying the load power. Meanwhile, the output point of the current transformer is changed into the current source for supplying power, the key change enables the power supply of the control circuit not to be affected by load short circuit or overcurrent, on the contrary, when the load is in short circuit or overcurrent, the power supply is more sufficient, and the short circuit overcurrent protection is ensured to be timely and effectively started and controlled. When the TV set is short-circuited, the breakpoint switch is immediately started to provide a power supply for the alternating current switch controller, the non-focus alternating current switch is directly controlled to control alternating current, electric sparks are not generated during switching or short circuit, and the occurrence rate of electrical fire is greatly reduced. And the switching times are not limited and no mechanical wear exists, so the super safety switch has long service life and high reliability.)

1. A device and a technique for solving the short circuit hazard of a television and ensuring the circuit safety,

The method is characterized in that:

the invention relates to a device and a technology for solving the problem of short circuit hazard of a television and ensuring the circuit safety of the television, and provides an alternating current two-wire control circuit scheme for forming a self-generating power supply by using a current transformer, which fundamentally changes the method for establishing the self-generating power supply in the prior art, thereby exponentially reducing additional on-state voltage drop and additional off-state current, and particularly having more remarkable effect under the condition of heavy current load: in addition, the attached overload signal can conveniently form solid-state short-circuit protection and overload protection. The switch can work under the condition of a non-sine wave power supply, and various self power supplies can be established to enable the interior of the switch to be easily adapted to the expression forms of various control circuit control modes;

the problem of safety such as human electric shock casualties, conflagration when the TV set electric wire short circuit among the prior art is solved to solve TV set short circuit harm problem and guarantee its circuit safety.

2. The method of claim 1, wherein:

The device and the technology for solving the problem of short circuit hazard of the television and ensuring the circuit safety actually comprise two practical technologies, one is a two-wire AC control switch technology mainly playing a role of on-off, and the other is a switching circuit technology of continuously switching on and off in an AC circuit.

3. The method of claim 1 or 2, wherein:

the device and the technology for solving the problem of short circuit hazard of the television and ensuring the circuit safety are in the following arbitrary access modes. Because the control switch only has two external connection terminals, the control switch can be connected only by manufacturing a breakpoint (one breakpoint and two terminals) at any place of alternating current.

4. The method of claim 3, wherein:

Safety through unique inherent structures. Because the two-wire control switch is not directly connected with the alternating current power supply in the circuit, only serious faults of the two-wire control switch cannot damage or influence the alternating current power supply.

5. The method of claim 4, wherein:

Facing the external circuit and the unrivaled surge-free short circuit of itself. Because the afocal ac switch is switched on and off by using the semiconductor transistor with the deviation of overcurrent capability, when the short-circuit fault of the television occurs, the semiconductor transistor cannot be effectively protected by the conventional fast fuse, so that the best method is to establish an effective protection mechanism of the afocal ac switch, so that the afocal ac switch not only can protect the afocal ac switch, but also can protect external circuits such as an ac power supply, a power line and a load.

6. The method of claim 5, wherein:

The technology of the patent perfectly realizes that the short-circuit protection of the television set by the method has the following characteristics: (1) the protection action time is quick: only a few tens of microseconds or even shorter, from a few hundredths to a few thousandths of a contact protection device (fast fuse or fast circuit breaker). (2) The short-circuit protection device for the television does not cause surge current: because the protection action time is far shorter than the time constant of the power system, the short-circuit instantaneous breaking setting current is not the short-circuit current, and the surge current and the electric spark are not generated. (3) The short-circuit protection device of the television is not influenced by the power supply capacity, the size of the short-circuit current is irrelevant to the power supply capacity, and the short-circuit protection device of the television is not the short-circuit current when the short-circuit is broken instantly, so the effect of short-circuit protection is irrelevant to the size of the power supply capacity. (4) The power supply can be effectively protected no matter the load is short-circuited after the power supply is connected or the power supply is connected after the load is short-circuited.

1. Field of the invention

the invention relates to the field of television design, and provides a device and a technology for solving the short-circuit hazard of a television and ensuring the circuit safety of the television.

2. Background of the invention

the invention and the use of electric power bring great changes to the production and the life of people. The wide application of electricity has promoted the production field to have lasting, profound structural change. Electricity gradually replaces steam. In the 19 th century and the 70 th century, the electric power as new energy enters the production field and becomes the main power of factory machines, and human history enters the 'electrical age'. Due to the use of electricity, other industrial sectors have also developed rapidly, especially the development of the steel industry, which distinguishes mankind from the cotton era in the field of materials. The rise of modern industry is marked by the advent of electrification and the "steel age". The electric power industry rapidly rises, and the electric power industry and steel, petrochemical industry, automobile manufacturing and the like form four novel pillar industries hit by the second industrial leather. Electric power is widely used in the field of life, and electric power is rapidly spread and applied to various angles and various fields of illumination, telecommunication, city traffic, processing industry and daily life. The household appliances with various varieties enter thousands of households, and the life quality and the life style of people are improved. But the household appliances also bring potential safety hazards to people, especially fire casualty accidents caused by short circuit of televisions, and huge losses are caused to family property and life security of people.

3. Summary of the invention

based on the above problems, an apparatus and a technique for solving the short circuit hazard of a television and ensuring the circuit safety thereof are proposed, which can solve the above technical problems.

The invention aims to overcome the defects of the prior television technology and provide a method for solving the safety problems of human body electric shock casualties, fire disasters and the like caused by surge current generated when a television wire is in short circuit, thereby solving the problem of damage caused by short circuit of the television, ensuring the circuit safety and realizing the safety of other household appliances when short circuit occurs.

The technical scheme adopted for realizing the purpose of the invention is as follows:

The device and technique for solving the damage of short circuit of TV set and ensuring its circuit safety includes two practical techniques, one is the two-wire AC control switch technique mainly playing the role of on-off, and the other is the switching circuit technique of continuously switching in AC circuit. The device is formed by sequentially connecting a power plug, a non-focus alternating current switch, a current transformer, a breakpoint switch and a television system in series. The alternating current switch controller is connected with the current transformer and the breakpoint switch in parallel in a two-wire mode.

the invention relates to a device and a technique for solving the short circuit hazard of a television and ensuring the circuit safety, which firstly adopt a current transformer to take energy from load current to establish a power supply of a control circuit, thus avoiding alternating current interference caused by establishing the control circuit by an alternating current power supply for supplying the load power. The additional on-state voltage drop of this patent technique is the alternating current voltage drop on current transformer primary winding, can accomplish this kind of additional on-state and transistor module's alternating current on-state voltage drop comparison when heavy current operation, can ignore, moreover, only used current transformer, just the only one can accomplish this point. The technology adopts the current transformer output point to be changed into the current source power supply, the key change causes the control circuit power supply not to be influenced by the load short circuit or overcurrent, on the contrary, when the load short circuit or overcurrent, the power of the power supply is more sufficient, and the short circuit overcurrent protection is ensured to be timely and effectively started and controlled. When the TV set is short-circuited, the breakpoint switch is immediately started to provide a power supply for the alternating current switch controller, the non-focus alternating current switch is directly controlled to control alternating current, electric sparks are not generated during switching, and the short circuit position does not generally generate the electric sparks during short circuit, so that the occurrence rate of electrical fire is greatly reduced. Ac interference caused by the ac power source is avoided. The current transformer draws energy from the load current to establish power to the control circuit, thus eliminating AC interference caused by the AC power supply supplying power to the load establishing the control circuit. The problem of additional on-state voltage drop of the alternating current two-wire circuit is large is solved, and therefore the prospect of large-current operation of the alternating current two-wire circuit is created. The additional on-state voltage drop is an additional ac voltage drop in addition to the on-state ac voltage drop of the transistor element, although it is desirable that the voltage drop is as small as possible, and should be small especially in high current operation. The additional on-state voltage drop of this patent technique is the alternating current voltage drop on current transformer primary winding, can accomplish this kind of additional on-state and transistor module's alternating current on-state voltage drop comparison when heavy current operation, can ignore, moreover, only used current transformer, just the only one can accomplish this point. The influence on the power supply of the control circuit at the moment of short circuit or during overcurrent of the load is eliminated. If the alternating current power supply for supplying power to the load is obtained by conversion, when the load is short-circuited or over-current occurs, the voltage of the alternating current power supply is liable to be greatly reduced, which easily causes the power shortage of the control circuit power supply, and the control and protection functions are invalid, thus becoming the first problem of realizing the alternating current short-circuit and over-current protection of the solid-state switch. The reluctant solution is to use another independent auxiliary power supply to convert into a control circuit power supply, but the overall practicability of the control circuit power supply is greatly reduced, and the circuit structure tends to be complicated. This patent technique adopts current transformer delivery point to change into by the current source power supply, and this key change causes the control circuit power not receive load short circuit or the influence that overflows, and on the contrary when load short circuit or overflow, the electric power of this power is more sufficient, has guaranteed that short circuit overcurrent protection in time effectively plays the accuse when the short circuit takes place for the TV set.

4. Description of the drawings

The above and other aspects and advantages of the present invention will become more readily apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which:

FIG. 1: the invention is a schematic diagram of the principle structure of the device and the technology for solving the short-circuit hazard of the television and ensuring the circuit safety;

5. detailed description of the preferred embodiments

The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which various embodiments are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

Referring to fig. 1, the device and the technology for solving the short-circuit hazard of the television and ensuring the circuit safety of the television are formed by sequentially connecting a power socket 1, a non-focus alternating current switch 2, a breakpoint switch 3, a current transformer 4 and a television system 5 in series. The alternating current switch controller 6 is respectively connected with the current transformer 4 and the breakpoint switch 3 in parallel in a two-wire mode

The specific principle is shown in figure 1: the power socket 1 is connected with an alternating current power supply, and a safety control circuit consisting of a non-focus alternating current switch 2, a breakpoint switch 3 and a current transformer 4 supplies power to a television system 5. The current transformer 4 and the breakpoint switch 3 are respectively connected with the alternating current switch controller 6 in parallel in a two-wire mode.

the breakpoint switch has an arbitrary access mode. Because the control switch only has two external connection terminals, the control switch can be connected only by manufacturing a breakpoint (one breakpoint and two terminals) at any place of alternating current. The current transformer avoids ac interference caused by the ac power source. The current transformer draws energy from the load current to establish power to the control circuit, thus eliminating AC interference caused by the AC power supply supplying power to the load establishing the control circuit. Meanwhile, the problem of large additional on-state voltage drop of the alternating current two-wire circuit is solved, and therefore the prospect of large-current operation of the alternating current two-wire circuit is created. The additional on-state voltage drop is an additional ac voltage drop in addition to the on-state ac voltage drop of the transistor element, although it is desirable that the voltage drop is as small as possible, and should be small especially in high current operation. The additional on-state voltage drop of this patent technique is the alternating current voltage drop on current transformer primary winding, can accomplish this kind of additional on-state and transistor module's alternating current on-state voltage drop comparison when heavy current operation, can ignore, moreover, only used current transformer, just the only one can accomplish this point. The non-focus alternating current switch has incomparable and excellent short circuit capability compared with the traditional circuit breaker, provides super safety for power supply and power utilization, does not generate electric sparks during switching, and does not generate electric sparks at a short circuit part generally when short circuit occurs, thereby greatly reducing the occurrence rate of electrical fire. The contactless switch manufactured by the patent technology is a power electronic product, and has essential difference compared with a common switch with a contact. It is mainly characterized by that its interior has no movable electric contact, and is fully sealed, its surface is completely insulated, when the switch is operated, it does not produce electric spark, and can use touch or approach mode to control circuit to make-and-break, and the finger can be lightly touched to make-and-break the insulated action zone, and then touched to make-and-break, or the finger can be approached to the action zone, and can be made-and-break, and two kinds of luminotrons with different colours can be used for indicating switch state and power supply state. More expensively, the switch has a particularly excellent short-circuit protection function, namely surge-free short-circuit protection, all loads are short-circuited, electric sparks are not generated at the short-circuit part generally, and no damage is caused to a power supply, an electric wire, a switch and the like, so that the fragile and fragile state that the conventional non-contact alternating-current switch cannot be effectively protected is avoided, and the state is changed into a reinforcing steel bar iron-bone state which is not afraid of ten thousand short circuits. In addition, the switch is the same as a common contact switch, only two lead wires are arranged outside, the traditional switch is very convenient to update without adding wiring, the standby power consumption of the non-contact switch is extremely low, only 0.02 watt is needed, and only a little money of RMB is consumed after one year of standby. The contactless switch manufactured by the technology of the patent is not afraid of short circuit and does not generate electric spark, so that the contactless switch is not afraid of electric damage in the range of commercial power, and is not limited by switching times and has no mechanical wear, so that the contactless switch is a super safety switch with long service life and high reliability. The device is suitable for common families and units, is also suitable for special places such as palace museums, large libraries, confidential archives, medical institutions, entertainment places, hotels and the like, and is suitable for high-risk environments such as inflammable and explosive environments, and has the capability of being manufactured into severe environments such as humid vibration corrosion, and the working current can be more than 0.1A-30A.

the above description is only an example of the present invention, and is not intended to limit the present invention. The invention is susceptible to various modifications and alternative forms. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.