CN2095499U - Life prolonging protector for TV - Google Patents
Life prolonging protector for TV Download PDFInfo
- Publication number
- CN2095499U CN2095499U CN 91211889 CN91211889U CN2095499U CN 2095499 U CN2095499 U CN 2095499U CN 91211889 CN91211889 CN 91211889 CN 91211889 U CN91211889 U CN 91211889U CN 2095499 U CN2095499 U CN 2095499U
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- protector
- television
- life prolonging
- life
- protection network
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Abstract
The utility model relates to a life prolonging protector for a color television. The life prolonging protector comprises an automatic compensation circuit and an overpressure protection network. The automatic compensation circuit is composed of a thermosensitive resistor with negative temperature coefficient and a short time delay switch circuit. The overpressure protection network is composed of an electric discharge tube, a spark discharge interval HF and a cartridge fuse. The life prolonging protector can automatically clear the inrush transient current for a television and can extend the service life of the television. The hazard from various high voltages and high currents for the television can be quickly and thoroughly filtered or cut off. The life prolonging protector has randomness without no load consumption. After the television is turned off, the life prolonging protector also has the function of overvoltage protection. The life prolonging protector is suitable for various distance type and general type color televisions and black-and-white television, videos, audio machines, computers and other electronic devices.
Description
The utility model relates to the colour TV protector of lengthening the life.
Color television set is equipped with anti-magnetized coil; its erasing current is initial about 10A; for the start erasing current is passed through smoothly; selected 2-3.5A time-delay fusing fuse for use; this has brought fatal weakness to color television set; promptly when power supply generation overvoltage, can not quick-break protect, cause colour TV badly damaged.It is instantaneous greater than the impact harm of the doubly big electric current of steady-state current 3-10 to picture tube filament and electronic devices and components that various television sets exist start again, and television set is restricted useful life.At present, two kinds of TV protectors of relay system and piezo-resistance formula are arranged on the market, the relay system overvoltage protector is because contact action is too slow, and the contact breaking capacity has only 220V.AC, in case run into the easy puncture short of high pressure, loses protective effect.(the patent No.: 89212275) that Chinese patent has been announced is a kind of " Sun Shi television set lengthen the life protector ", adopt the commutator of special manual band negative tempperature coefficient thermistor, prevent the impulse current of starting shooting, but operation has brought trouble to television set, if open television set earlier or stop sending electricity to have little time operation protection device switch, to lose the effect of lengthening the life, remote-controlled television set can't be realized remote control switch; It has adopted piezo-resistance to do overvoltage protection; although response is fast; but through-current capacity is little; belong to the absorber element of surging; if faults such as power line generation short or disconnected zero line cause overtension or rise to 380V, just be difficult to guarantee the safety of television set, just might break after having only piezo-resistance to burn and protect silk; do open circuit protection, it is unreliable to protect.
The purpose of this utility model can be eliminated above-mentioned shortcoming in order to provide a kind of exactly, can lengthen the life and have the reliably protecting effect, does not need the manually-operated colour TV protector of lengthening the life.
This device is made up of auto compensatng circuit and overvoltage protection network, and auto compensatng circuit comprises by D
1, D
2, D
3, D
4, R
1, R
2, C
1, CR the short time delay switching circuit and the negative tempperature coefficient thermistor R that constitute
4The overvoltage protection network comprises discharge tube R-400D, spark-discharge gap HF and cartridge fuse BX.
The discharge tube R-400D discharge voltage of this device is 270-300V.AC, discharge capacity 5A * 5S.Auto compensatng circuit has by LED and resistance R
3The function display of forming.
The utility model can be eliminated the television boot-strap transient high-current automatically picture tube filament and electronic devices and components ground are impacted, and has prolonged television set useful life.Overcurrent protection response is fast, reliable operation, can be rapidly filtering or cut off various high voltages, big electric current up hill and dale, comprise the high voltage of lightning induction, can disturb by suppressor pulse.Auto compensatng circuit has randomness, and protector does not have no-load consumption, and behind the closing television machine, its protecting network still works.This device is applicable to various distance types and general television set, video recorder, sound equipment, computer and other electronic equipment.
Be further described below in conjunction with accompanying drawing:
Description of drawings: accompanying drawing is a schematic diagram of device
Comprise D among the figure1、D
2、D
3、D
4Bridge rectifier and R1、R
2、C
1, the short time delay on-off circuit that forms of controllable silicon CR, R-400D, BX, HF form overvoltage protection network, LED, R3The composition function display, R4For negative tempperature coefficient thermistor, CZ are the television set socket, CT is the protector attaching plug.
The auto-compensation circuit of this device comprises short time delay on-off circuit, negative tempperature coefficient thermistor, display. Automatically protector has randomness, when television boot-strap, and the protector power connection, television set electric current process bridge rectifier is by R4Conducting, electric current are ascending ascendant trend, simultaneously, and R1Give C1Charging makes the CR conducting at short notice, and current value when progressively having reached the television set normal operation has so just been eliminated the impact harm of start transient high-current to kinescope filament and electronic devices and components. R2Play the dividing potential drop effect, protection C1。R
3The function display that forms with LED is instantaneous light emission when starting shooting, and can work shows that when not luminous, explanation can not be worked to the auto-compensation circuit. This auto-compensation circuit does not have impact to colour TV erasing current size, has just postponed the erasing time a little.
The overvoltage protection network of this device is made up of discharge tube R-400D, spark-discharge gap HF and cartridge fuse BX. The R-400D discharge voltage is 270V-300V.AC(or 380-430V.DC), discharge capacity 5A * 5S, when line voltage reached marked voltage of discharge tube, the overvoltage protection effect was played in rapidly filtering or break cartridge fuse BX of discharge tube R-400D. Spark-discharge gap HF discharge voltage plays the duplicate protection discharge process a little more than marked voltage of discharge tube. This protecting network can be done by suppressor pulse Disturb the high voltage of the various high voltages that filtering or cut-out electrical network take place, big electric current and lightning induction.
The embodiment of the tool advantage of the utility model is D
1-D
4Be 5A/600V rectifier diode, R
1Be 10K Ω, R
2Be 680 Ω, R
3Be 20K Ω, all select the 0.25W metalfilmresistor for use, C
1Be that 220 μ/16V, LED are φ 5 red light emitting diodes, CR is the 6A/600V one-way SCR, R
4Be 1.5K Ω 5W negative tempperature coefficient thermistor; BX is the 4A cartridge fuse; R-400D is marked voltage of discharge tube 270-300V.AC discharge capacity 5A * 5S; the protector attaching plug is CT; protector accessory power outlet (being the TV set power socket) is CZ, and each components and parts is welded on the same wiring board.The cartridge fuse of this device is located on the shell, is convenient to change.
Claims (3)
1, a kind of colour TV protector of lengthening the life is characterized in that protector is made up of auto compensatng circuit and overvoltage protection network, and auto compensatng circuit comprises by D
1, D
2, D
3, D
4, R
1, R
2, C
1, CR the short time delay switching circuit and the negative tempperature coefficient thermistor R that constitute
4, the overvoltage protection network comprises discharge tube R-400D, spark-discharge gap HF and cartridge fuse BX.
2, the colour TV according to claim 1 protector of lengthening the life is characterized in that said discharge tube R-400D discharge voltage is 270～300V.AC, discharge capacity 5A * 5S.
3, the colour TV according to claim 1 protector of lengthening the life is characterized in that said auto compensatng circuit has by LED and resistance R
3The function display of forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91211889 CN2095499U (en) | 1991-06-25 | 1991-06-25 | Life prolonging protector for TV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91211889 CN2095499U (en) | 1991-06-25 | 1991-06-25 | Life prolonging protector for TV |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2095499U true CN2095499U (en) | 1992-02-05 |
Family
ID=50240113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91211889 Pending CN2095499U (en) | 1991-06-25 | 1991-06-25 | Life prolonging protector for TV |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2095499U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048364C (en) * | 1996-01-29 | 2000-01-12 | 三星电子株式会社 | Overvoltage cut-off circuit with special switchboard branch line direct through communication line |
| CN103105513A (en) * | 2013-01-17 | 2013-05-15 | 广东电网公司电力科学研究院 | Protection device for removing damages caused by random large-signal of detected device on standard device |
-
1991
- 1991-06-25 CN CN 91211889 patent/CN2095499U/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048364C (en) * | 1996-01-29 | 2000-01-12 | 三星电子株式会社 | Overvoltage cut-off circuit with special switchboard branch line direct through communication line |
| CN103105513A (en) * | 2013-01-17 | 2013-05-15 | 广东电网公司电力科学研究院 | Protection device for removing damages caused by random large-signal of detected device on standard device |
| CN103105513B (en) * | 2013-01-17 | 2015-09-16 | 广东电网公司电力科学研究院 | Eliminate the protective device that tested equipment output stochastic larger signal damages standard device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |