CN203574360U - Refrigerator with surge protection - Google Patents
Refrigerator with surge protection Download PDFInfo
- Publication number
- CN203574360U CN203574360U CN201320760605.1U CN201320760605U CN203574360U CN 203574360 U CN203574360 U CN 203574360U CN 201320760605 U CN201320760605 U CN 201320760605U CN 203574360 U CN203574360 U CN 203574360U
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- triode
- diode
- refrigerator
- surge
- electrode
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Abstract
The utility model discloses a refrigerator with surge protection. The refrigerator with the surge protection comprises a power interface; the power interface is connected with a surge discharge circuit; the surge discharge circuit comprises a diode D1 and a diode D2; the anode of the diode D1 is also connected to the power interface and the cathode of the diode D2; the cathode of the diode D1 is connected with a power supply and at the same time connected with the source electrode of a field effect tube; the gate electrode of the field effect tube is connected with the drain electrode of a resistor R1; the drain electrode of the field effect tube is connected to the anode of the diode D2 and at the same time is grounded; the anode of the diode D1 through a resistor R2 is connected to the base electrode of a triode T1 and the base electrode of a triode T2; the collector electrode of the triode T1 is connected to the collector electrode of the triode T2; the emitter electrode of the triode T1 is connected to the power supply; and the emitter electrode of the triode T2 id grounded. The refrigerator with the surge protection has the advantages that: the surge discharge circuit is used to discharge the instant surge; the refrigerator with the surge protection is small in size and high in reliability.
Description
Technical field
The utility model relates to a kind of refrigerator, relates in particular a kind of refrigerator with carrying out surge protection.
Background technology
Because refrigerator can keep constant low temperature, its generally apply to fresh-keeping in.In domestic. applications, refrigerator is quite important especially.Refrigerator inside has compressor, ice machine etc., and there is a lot of electronic devices its inside.And the mains switch of refrigerator is being communicated with in a flash, easily produce surge, be the peak value that occurs exceeding stationary value moment, and the generation of surge will have a huge impact the electronic device of refrigerator inside, when serious, will bring the destruction that can not reverse to compressor or ice machine.When surge voltage is protected, the general Surge Protector of installing on the interface of refrigerator, the volume of its Surge Protector is large, will bring burden to the volume of refrigerator.
Utility model content
The utility model provides a kind of refrigerator with carrying out surge protection, its utilize surge leadage circuit to moment surge release, its volume is little, and reliability is high.
For solving above-mentioned technical problem, the utility model by the following technical solutions:
The refrigerator with carrying out surge protection, it comprises power interface, on described power interface, be connected with surge leadage circuit, described surge leadage circuit comprises diode D1 and diode D2, the anode of described diode D1 is connected on the negative electrode of power interface and diode D2 simultaneously, the negative electrode of described diode D1 is connected with power supply and is connected on the source electrode of field effect transistor simultaneously, the grid of described field effect is connected with drain electrode by resistance R 1, the drain electrode of described field effect transistor is connected on the anode of diode D2 and ground connection simultaneously, the anode of described diode D1 is connected in the base stage of triode T1 and the base stage of triode T2 by resistance R 2 simultaneously, the collector electrode of described triode T1 is connected on the collector electrode of triode T2, the emitter of described triode T1 is connected with power supply, the grounded emitter of described triode T2, described triode T1 is positive-negative-positive triode, described triode T2 is NPN type triode, described field effect transistor is N-type field effect transistor.
Further technical scheme is:
As preferably, the Standard resistance range of described resistance R 2 is 1 kilohm-3 kilohms.
Further, described resistance R 1 and resistance R 2 are Chip-R.
Compared with prior art, the beneficial effects of the utility model are:
The utility model connects surge leadage circuit at the power interface place of refrigerator, surge leadage circuit mainly comprises two triodes, field effect transistor and two triodes, its circuit structure is simple, the area taking is little, bring burden can to the volume of refrigerator, and surge leadage circuit is released many paths is provided for surge, and reliability is high.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is circuit diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.Execution mode of the present utility model includes but not limited to the following example.
[embodiment]
The refrigerator with carrying out surge protection as shown in Figure 1, it comprises power interface, on described power interface, be connected with surge leadage circuit, described surge leadage circuit comprises diode D1 and diode D2, the anode of described diode D1 is connected on the negative electrode of power interface and diode D2 simultaneously, the negative electrode of described diode D1 is connected with power supply and is connected on the source electrode of field effect transistor simultaneously, the grid of described field effect is connected with drain electrode by resistance R 1, the drain electrode of described field effect transistor is connected on the anode of diode D2 and ground connection simultaneously, the anode of described diode D1 is connected in the base stage of triode T1 and the base stage of triode T2 by resistance R 2 simultaneously, the collector electrode of described triode T1 is connected on the collector electrode of triode T2, the emitter of described triode T1 is connected with power supply, the grounded emitter of described triode T2, described triode T1 is positive-negative-positive triode, described triode T2 is NPN type triode, described field effect transistor is N-type field effect transistor.In actual utilization, the collector electrode of the triode T1 of surge leadage circuit is connected on the internal circuit of refrigerator, and the anodic bonding of diode D1 is on power interface.When the mains switch of refrigerator is opened in a flash, surge acts on the anode of diode D1, and diode D1, diode D2 and field effect transistor provide many paths of releasing for surge, and surge is tentatively released; If surge is not released completely, now triode T1 and triode T2 release to surge again, to strengthen the reliability of whole surge leadage circuit.2 metering functions of resistance R, avoid the excessive internal circuit to refrigerator of electric current to damage, and effectively internal circuit are protected, and strengthen reliability.
The Standard resistance range of described resistance R 2 is 1 kilohm-3 kilohms.2 metering functions of resistance R, avoid that electric current is excessive to be damaged device interior electronic devices and components, be that it at least also should be at 1 kilohm, but impact when making it to the device signal transmission of external-connected port, the resistance of resistance R 2 should be over 3 kilohms.
In order to strengthen the reliability of surge protection circuit, described resistance R 1 and resistance R 2 are Chip-R.Paster type resistor is a kind of form of metal glass uranium resistance, and its volume is little, and precision is high, good stability, and high frequency performance is good, can reduce cost and dwindle the volume of circuit.Utilize Chip-R, can strengthen its reliability.
Be as mentioned above embodiment of the present utility model.The utility model is not limited to above-mentioned execution mode, and anyone should learn the structural change of making under enlightenment of the present utility model, every with the utlity model has identical or close technical scheme, within all falling into protection range of the present utility model.
Claims (3)
1. the refrigerator with carrying out surge protection, it comprises power interface, it is characterized in that: on described power interface, be connected with surge leadage circuit, described surge leadage circuit comprises diode D1 and diode D2, the anode of described diode D1 is connected on the negative electrode of power interface and diode D2 simultaneously, the negative electrode of described diode D1 is connected with power supply and is connected on the source electrode of field effect transistor simultaneously, the grid of described field effect is connected with drain electrode by resistance R 1, the drain electrode of described field effect transistor is connected on the anode of diode D2 and ground connection simultaneously, the anode of described diode D1 is connected in the base stage of triode T1 and the base stage of triode T2 by resistance R 2 simultaneously, the collector electrode of described triode T1 is connected on the collector electrode of triode T2, the emitter of described triode T1 is connected with power supply, the grounded emitter of described triode T2, described triode T1 is positive-negative-positive triode, described triode T2 is NPN type triode, described field effect transistor is N-type field effect transistor.
2. the refrigerator with carrying out surge protection according to claim 1, is characterized in that: the Standard resistance range of described resistance R 2 is 1 kilohm-3 kilohms.
3. the refrigerator with carrying out surge protection according to claim 1 and 2, is characterized in that: described resistance R 1 and resistance R 2 are Chip-R.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320760605.1U CN203574360U (en) | 2013-11-28 | 2013-11-28 | Refrigerator with surge protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320760605.1U CN203574360U (en) | 2013-11-28 | 2013-11-28 | Refrigerator with surge protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203574360U true CN203574360U (en) | 2014-04-30 |
Family
ID=50542073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320760605.1U Expired - Fee Related CN203574360U (en) | 2013-11-28 | 2013-11-28 | Refrigerator with surge protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203574360U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683243A (en) * | 2013-11-28 | 2014-03-26 | 成都市宏山科技有限公司 | Refrigerator with surge protection function |
-
2013
- 2013-11-28 CN CN201320760605.1U patent/CN203574360U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683243A (en) * | 2013-11-28 | 2014-03-26 | 成都市宏山科技有限公司 | Refrigerator with surge protection function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140430 Termination date: 20141128 |
|
| EXPY | Termination of patent right or utility model |