CN2335293Y - Self-recovery indicating type protector - Google Patents
Self-recovery indicating type protector Download PDFInfo
- Publication number
- CN2335293Y CN2335293Y CN 98207391 CN98207391U CN2335293Y CN 2335293 Y CN2335293 Y CN 2335293Y CN 98207391 CN98207391 CN 98207391 CN 98207391 U CN98207391 U CN 98207391U CN 2335293 Y CN2335293 Y CN 2335293Y
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- China
- Prior art keywords
- light emitting
- emitting diode
- protector
- luminous tube
- utility
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to an electric appliance protecting device, particularly a self-recovery indication type protector. The protector is provided with a light emitting diode LED and a current limiting resistor R which are connected in series. A positive temperature coefficient thermal resistor PTC is connected in parallel with a series circuit composed of the light emitting diode LED and the current limiting resistor R. The light emitting diode LED can be composed of two light emitting diodes that are connected in parallel in the reverse direction. The light emitting diode LED can also be a bidirectional luminous tube. Compared with the prior art, the protector of the utility model has the advantages that the utility model can be restored to the working state automatically after the line fault is eliminated, the universality is good, etc.
Description
The utility model relates to a kind of Protector for electric appliances, specifically a kind of display type protector that can recover its operating state after line fault is got rid of automatically.
Chinese patent ZL96213693.X discloses a kind of " the automobile-used fuse of display type ", composes in parallel with fuse after being connected with current-limiting resistance by light-emitting diode.This light-emitting diode is made up of the light-emitting diode of two reverse parallel connections, and light-emitting diode and resistance are sealed in and show in the cavity, shows that the cavity bottom is that two metals are inserted body, and two insert the fuse that is wound with single setting between the body.This fuse can be repeatedly used, and does not have directivity during use.But after line fault is got rid of must by manually once more wrapping wire could recover, use is inconvenient, and can only make individual plug connector, can not be directly fixed among the power consumption equipment.In addition, because its fuse the time has spark produce in fusing, thereby can't be applied to the place that colliery, oil depot etc. have special explosion-proof, fire protection requirement.
The purpose of this utility model provides a kind ofly can recover its operating state and the good display type of the recovery certainly protector of versatility automatically after line fault is got rid of.
The purpose of this utility model is achieved in that
A kind of have the luminous tube LED and the current-limiting resistance R of series connection from recovering the display type protector, and semistor PTC is parallel on the series circuit of luminous tube LED and current-limiting resistance R formation.
Luminous tube LED can be made up of the light-emitting diode of two reverse parallel connections, also can be a two-way luminous tube.
Semistor PCT has resistance value and raises and raise rapidly with temperature, and final resistance is almost infinitely-great characteristic, and its resistance has only several ohm under the normal temperature state.Replace general purpose fuse of the prior art with semistor PCT, in case line short circuit current raises when surpassing its specified limiting current value suddenly, the temperature of semistor PCT will sharply rise in several seconds (about 0.05-30 second), the high impedance status that is similar open circuit plays the effect of fuse.At this moment, have only atomic weak electric current to flow through semistor PCT, semistor PCT keeps its high impedance status under the keeping of this weak current.And after cutting off the electricity supply, it can (in 30 seconds) reduce to normal temperature rapidly, and recovers its low impedance state.The size of the limiting current that it can bear and temperature rise speed depend on the sectional area of its selected PCT material, thereby can select according to instructions for use.
Compared with prior art, the utility model has the function of recovering its operating state after line fault is got rid of automatically from recovering the display type protector, and is very easy to use, can be directly fixed among the power consumption equipment.Alternating current-direct current all can use, and operating voltage is in the wide region of 1-1000V, and because it the spark that general purpose fuse fusing the time is produced can not occur, thereby all have the place of special fire protection requirement to can be applicable to colliery, oil depot etc., have good versatility.
Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail.
Accompanying drawing is that the utility model is from the circuit theory diagrams that recover the display type protector.
As shown in the figure, the utility model has the luminous tube LED and the current-limiting resistance R of series connection from recovering the display type protector, and semistor PTC is parallel on the series circuit of luminous tube LED and current-limiting resistance R formation.Luminous tube LED is a two-way luminous tube.
During work, recover the display type protector certainly, constitute the loop by power supply, semistor PTC and power consumption equipment as in overload protective device line attachment or the electric equipment.When power consumption equipment overload or short circuit, electric current sharply increases, in case surpass the rating plate of the semistor PTC flow valuve of rationing the power supply, along with the rapid rising of its temperature, impedance rises to infinity rapidly.At this moment, the electric current that flows through semistor PTC approximates zero, electric current then flow to luminous tube LED and current-limiting resistance R or and the loop of power consumption equipment formation.Luminous tube LED is luminous, indicates this circuit to break down.When fixing a breakdown when cutting off the electricity supply, semistor PTC reduces to normal temperature rapidly, and recovers its low impedance state, makes that protector enters normal operating conditions automatically after the fault eliminating energized.
Claims (2)
1. one kind is recovered the display type protector certainly, has the luminous tube LED and the current-limiting resistance R of series connection, it is characterized in that: semistor PTC is parallel on the series circuit of luminous tube LED and current-limiting resistance R formation.
2. according to claim 1 from recovering the display type protector, it is characterized in that: described luminous tube LED can be made up of the light-emitting diode of two reverse parallel connections, also can be a two-way luminous tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98207391 CN2335293Y (en) | 1998-07-31 | 1998-07-31 | Self-recovery indicating type protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98207391 CN2335293Y (en) | 1998-07-31 | 1998-07-31 | Self-recovery indicating type protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2335293Y true CN2335293Y (en) | 1999-08-25 |
Family
ID=33963330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98207391 Expired - Fee Related CN2335293Y (en) | 1998-07-31 | 1998-07-31 | Self-recovery indicating type protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2335293Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356444A (en) * | 2015-12-02 | 2016-02-24 | 中国电子科技集团公司第四十一研究所 | Circuit structure for supplying power to multiple sensors through the same power source |
| CN106152065A (en) * | 2015-04-10 | 2016-11-23 | 许立江 | DC-AC two-use bidirectional luminescence LED lamp bead |
| CN109974881A (en) * | 2019-03-15 | 2019-07-05 | 上海电仪仪器仪表有限公司 | A thermal resistance thermometer |
-
1998
- 1998-07-31 CN CN 98207391 patent/CN2335293Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152065A (en) * | 2015-04-10 | 2016-11-23 | 许立江 | DC-AC two-use bidirectional luminescence LED lamp bead |
| CN105356444A (en) * | 2015-12-02 | 2016-02-24 | 中国电子科技集团公司第四十一研究所 | Circuit structure for supplying power to multiple sensors through the same power source |
| CN109974881A (en) * | 2019-03-15 | 2019-07-05 | 上海电仪仪器仪表有限公司 | A thermal resistance thermometer |
| CN109974881B (en) * | 2019-03-15 | 2024-11-01 | 上海电仪仪器仪表有限公司 | Thermal resistance thermometer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BAOSHAN IRON & STEEL CO., LTD. Free format text: FORMER NAME OR ADDRESS: BAOSHAN STEEL GROUP IRON AND STEEL CO LTD |
|
| CP03 | Change of name, title or address |
Address after: 201900, Fujin Road, Shanghai, Baoshan District orchard Patentee after: Baoshan Iron & Steel Co., Ltd. Address before: No. 1, Middle Road, Baoshan District, Shanghai Patentee before: Baoshan Iron & Steel (Group) Co., Ltd. |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |