CN201518411U - Novel overvoltage protector - Google Patents
Novel overvoltage protector Download PDFInfo
- Publication number
- CN201518411U CN201518411U CN2009202181294U CN200920218129U CN201518411U CN 201518411 U CN201518411 U CN 201518411U CN 2009202181294 U CN2009202181294 U CN 2009202181294U CN 200920218129 U CN200920218129 U CN 200920218129U CN 201518411 U CN201518411 U CN 201518411U
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- CN
- China
- Prior art keywords
- circuit board
- internal circuit
- overvoltage
- overvoltage protector
- protector
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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.)
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Abstract
The utility model relates to the technical field of a protector apparatus of household electrical appliance, especially to a novel overvoltage protector for household. The overvoltage protector has an insulating casing, an internal circuit board is arranged in the insulating casing, a fuse is connected on the internal circuit board; the overvoltage protector is also provided with an input terminal which is connected with the internal circuit board and penetrating from the insulating casing, an output terminal connected with the internal circuit board, the insulating casing is provided with a plug jack corresponding to the output terminal. When using, the input terminal of the utility model is inserted into a commercial power socket, and the plug of the household electrical appliance is inserted into the plug jack of the output end of the overvoltage protector. When generating abnormal overvoltage, the overvoltage detector of the overvoltage protector detects the overvoltage to enable it to be conductive, a starting voltage is supplied to an electronic switch to enable the electronic switch to be closed, the current in the circuit is acutely increased, the fuse is rapidly burned out, the power supply is cut off, thereby effectively protecting the household electrical appliance.
Description
Technical field:
The utility model relates to the protector equipment technical field of household electrical appliance, refers in particular to a kind of novel overvoltage protector of suitable family expenses.
Background technology:
Be in in the electrical network, mostly be three-phase four-wire power supply,, thereby cause the too high damage of line voltage household electrical appliance often because of the zero line loose contact of distribution transformer or zero line and phase line misconnection or the zero line chance generation of situation such as open circuit; In addition, thunderbolt, surge voltage etc. also can cause the damage of household electrical appliance, and for fear of the generation of this type of damage, the overvoltage protection of household electrical appliance highlights important.Though all have such protection design in most electric equipment productss, all imperfection or protective ratio are more single, do not have due protective effect; though existing similar electronic product is quite a few; but most structural design more complicated, and cost is higher, is not suitable for family expenses.
The utility model content:
The purpose of this utility model is to overcome the above-mentioned weak point of existing product, and a kind of simple in structure, novel overvoltage protector that volume is small and exquisite is provided.
The utility model realizes that the technical scheme that its purpose adopts is: a kind of novel overvoltage protector, and described overvoltage protector has an insulation crust, in the described insulation crust internal circuit board is installed, and has connected fuse on the described internal circuit board; Described overvoltage protector also is provided with the input terminal that connects and be piercing in described insulation crust with described internal circuit board, and the lead-out terminal that connects with described internal circuit board, and described insulation crust is provided with the jack corresponding with described lead-out terminal.
Particularly, described internal circuit board is provided with overvoltage detector, electronic switch.
Described overvoltage detector is made up of bidirectional trigger diode DIAC and resistance, diode, electric capacity; Described electronic switch is unidirectional controllable silicon S CR.
Also be provided with status indicator lamp on the described internal circuit board.
After adopting said structure, the input terminal with the utility model overvoltage protector during use inserts commercial power socket, and the jack that the plug of household electrical appliance is inserted overvoltage protector lead-out terminal correspondence gets final product.During normal the use, status indicator lamp is bright; And when unusual overvoltage took place, the overvoltage detector of overvoltage protector detected overvoltage and makes its conducting, supplied with the electronic switch starting resistor; make electronic switch closes, thereby make current surge in the loop, blow fuse rapidly; thereby cut off the electricity supply, protected household electrical appliance.
Advantage of the present utility model is: the utility model is simple in structure, volume is little, cost is low, and installs and uses very conveniently, can protect household electrical appliance effectively.
Description of drawings:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is an internal circuit block diagram of the present utility model;
Fig. 3 is circuit theory diagrams of the present utility model.
Embodiment:
Below in conjunction with specific embodiments and the drawings the utility model is further specified.
As shown in Figure 1, the utility model overvoltage protector has an insulation crust 1, in the described insulation crust 1 internal circuit board 2 is installed, and has connected fuse 3 on the described internal circuit board 2; Overvoltage protector also is provided with the input terminal 41 that connects and be piercing in described insulation crust 1 with described internal circuit board 2, and the lead-out terminal 42 that connects with described internal circuit board 2, and described insulation crust 1 is provided with the jack 10 corresponding with described lead-out terminal 42.Also be provided with status indicator lamp 23 on the described internal circuit board 2.
Particularly, in conjunction with Fig. 2, shown in Figure 3, described internal circuit board 2 is provided with overvoltage detector 21, electronic switch 22 and status indicator lamp 23; Described overvoltage detector 21 is made up of bidirectional trigger diode DIAC and resistance (211,212), diode 213, electric capacity 214; Described electronic switch 22 is unidirectional controllable silicon S CR; Described status indicator lamp 23 is the LED lamp, and it is connected with resistance 231 and constitutes indicating circuit.
Operating state of the present utility model is as follows: the overvoltage protector input is electrically connected with the city, and output is connected with household electrical appliance.As shown in Figure 3, fuse 3 is positioned at the front end of internal circuit, and promptly input voltage is powered behind overcurrent fuse 3.Resistance 211 and resistance 212 are formed bleeder circuit, and the A point voltage is directly proportional with input voltage among the figure.When input voltage just often, the A point voltage is less than the conducting voltage of the bidirectional trigger diode DIAC of overvoltage detector 21, it is not conducting of bidirectional trigger diode DIAC, unidirectional controllable silicon S CR can't obtain trigger voltage, be that electronic switch 22 is in off-state, therefore status indicator lamp 23 is bright, i.e. the overvoltage protector operate as normal; When input voltage raises; the A point voltage increases, when A point voltage during greater than the conducting voltage of bidirectional trigger diode DIAC, and bidirectional trigger diode DIAC conducting; thereby supply with unidirectional controllable silicon S CR trigger voltage; make unidirectional controllable silicon S CR conducting, promptly be equivalent to electronic switch 22 closures, constitute the loop; make electric current moment sharp increase in the loop; blow fuse 3 rapidly, cut off the civil power input, therefore play the effect of protection electric equipment products.And LED light 23 does not work at this moment, and the prompting user need change overvoltage protector.
Certainly; the above is preferred embodiment of the present utility model; be not to be used for limiting protection range of the present utility model; allly do the modification of equivalence or variation according to structural principle of the present utility model; for example variation of input terminal, lead-out terminal number, position etc., they all should be at the row of protection range of the present utility model.
Claims (4)
1. novel overvoltage protector, it is characterized in that: described overvoltage protector has an insulation crust (1), and internal circuit board (2) is installed in the described insulation crust (1), has connected fuse (3) on the described internal circuit board (2); Described overvoltage protector also is provided with the input terminal (41) that connects and be piercing in described insulation crust (1) with described internal circuit board (2); and the lead-out terminal (42) that connects with described internal circuit board (2), described insulation crust (1) is provided with the jack (10) corresponding with described lead-out terminal (42).
2. a kind of novel overvoltage protector according to claim 1 is characterized in that: described internal circuit board (2) is provided with overvoltage detector (21), electronic switch (22).
3. a kind of novel overvoltage protector according to claim 2 is characterized in that: described overvoltage detector (21) is made up of bidirectional trigger diode DIAC and resistance (211,212), diode (213), electric capacity (214); Described electronic switch (22) is unidirectional controllable silicon S CR.
4. a kind of novel overvoltage protector according to claim 1 and 2 is characterized in that: also be provided with status indicator lamp (23) on the described internal circuit board (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202181294U CN201518411U (en) | 2009-10-19 | 2009-10-19 | Novel overvoltage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202181294U CN201518411U (en) | 2009-10-19 | 2009-10-19 | Novel overvoltage protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201518411U true CN201518411U (en) | 2010-06-30 |
Family
ID=42499133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202181294U Expired - Fee Related CN201518411U (en) | 2009-10-19 | 2009-10-19 | Novel overvoltage protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201518411U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102904207A (en) * | 2012-09-28 | 2013-01-30 | 西安开元电子实业有限公司 | Overvoltage protector |
| CN105652063A (en) * | 2015-06-26 | 2016-06-08 | 广州供电局有限公司 | Insulator leakage current monitoring system used for laboratory |
| CN111426871A (en) * | 2020-04-20 | 2020-07-17 | 小熊电器股份有限公司 | Overvoltage indicating circuit, overvoltage indicating method and household appliance |
-
2009
- 2009-10-19 CN CN2009202181294U patent/CN201518411U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102904207A (en) * | 2012-09-28 | 2013-01-30 | 西安开元电子实业有限公司 | Overvoltage protector |
| CN105652063A (en) * | 2015-06-26 | 2016-06-08 | 广州供电局有限公司 | Insulator leakage current monitoring system used for laboratory |
| CN105652063B (en) * | 2015-06-26 | 2019-04-23 | 广州供电局有限公司 | Insulator leakage current for laboratory monitors system |
| CN111426871A (en) * | 2020-04-20 | 2020-07-17 | 小熊电器股份有限公司 | Overvoltage indicating circuit, overvoltage indicating method and household appliance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100630 Termination date: 20121019 |