CN103683243A - Refrigerator with surge protection function - Google Patents
Refrigerator with surge protection function Download PDFInfo
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- CN103683243A CN103683243A CN201310612474.7A CN201310612474A CN103683243A CN 103683243 A CN103683243 A CN 103683243A CN 201310612474 A CN201310612474 A CN 201310612474A CN 103683243 A CN103683243 A CN 103683243A
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- triode
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Abstract
The invention discloses a refrigerator with a surge protection function. The refrigerator comprises a power interface. A surge discharge circuit is connected onto the power interface and comprises a diode D1 and a diode D2, a positive electrode of the diode D1 is simultaneously connected onto the power interface and a negative electrode of the diode D2, a negative electrode of the diode D1 is connected with a power source and is simultaneously connected onto a source electrode of a field-effect transistor, a grid electrode of the field-effect transistor is connected with a drain electrode by a resistor R1, the drain electrode of the field-effect transistor is connected onto a positive electrode of the diode D2 and is simultaneously grounded, the positive electrode of the diode D1 is simultaneously connected onto a base electrode of a triode T1 and a base electrode of a triode T2 by a resistor R2, a collector electrode of the triode T1 is connected onto a collector electrode of the triode T2, an emitting electrode of the triode T1 is connected with the power source, and an emitting electrode of the triode T2 is grounded. The refrigerator has the advantages that transient surge can be discharged by the aid of the surge discharge circuit, and the refrigerator is small in size and high in reliability.
Description
Technical field
The present invention relates to a kind of refrigerator, relate in particular a kind of refrigerator with carrying out surge protection function.
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.
Summary of the invention
The invention provides a kind of refrigerator with carrying out surge protection function, its utilize surge leadage circuit to moment surge release, its volume is little, and reliability is high.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
The refrigerator with carrying out surge protection function, 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 invention has the beneficial effects as follows:
The present invention 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 present invention is described in further detail.
Fig. 1 is circuit diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.Embodiments of the present invention include but not limited to the following example.
[embodiment]
The refrigerator with carrying out surge protection function 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 embodiments of the invention.The present invention is not limited to above-mentioned execution mode, and anyone should learn the structural change of making under enlightenment of the present invention, and every have identical or close technical scheme with the present invention, within all falling into protection scope of the present invention.
Claims (3)
1. the refrigerator with carrying out surge protection function, 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 function 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 function 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 |
|---|---|---|---|
| CN201310612474.7A CN103683243A (en) | 2013-11-28 | 2013-11-28 | Refrigerator with surge protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310612474.7A CN103683243A (en) | 2013-11-28 | 2013-11-28 | Refrigerator with surge protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103683243A true CN103683243A (en) | 2014-03-26 |
Family
ID=50319920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310612474.7A Pending CN103683243A (en) | 2013-11-28 | 2013-11-28 | Refrigerator with surge protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103683243A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5159518A (en) * | 1990-01-17 | 1992-10-27 | Vlsi Technology, Inc. | Input protection circuit for CMOS devices |
| CN103227462A (en) * | 2013-05-15 | 2013-07-31 | 成都市宏山科技有限公司 | Surge protecting circuit for camera |
| CN103248034A (en) * | 2013-05-15 | 2013-08-14 | 成都市宏山科技有限公司 | Lightning protection USB flash disk |
| CN203233167U (en) * | 2013-05-15 | 2013-10-09 | 成都市宏山科技有限公司 | USB flash disk with lightning-protection function |
| CN203574360U (en) * | 2013-11-28 | 2014-04-30 | 成都市宏山科技有限公司 | Refrigerator with surge protection |
-
2013
- 2013-11-28 CN CN201310612474.7A patent/CN103683243A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5159518A (en) * | 1990-01-17 | 1992-10-27 | Vlsi Technology, Inc. | Input protection circuit for CMOS devices |
| CN103227462A (en) * | 2013-05-15 | 2013-07-31 | 成都市宏山科技有限公司 | Surge protecting circuit for camera |
| CN103248034A (en) * | 2013-05-15 | 2013-08-14 | 成都市宏山科技有限公司 | Lightning protection USB flash disk |
| CN203233167U (en) * | 2013-05-15 | 2013-10-09 | 成都市宏山科技有限公司 | USB flash disk with lightning-protection function |
| CN203574360U (en) * | 2013-11-28 | 2014-04-30 | 成都市宏山科技有限公司 | Refrigerator with surge protection |
Non-Patent Citations (1)
| Title |
|---|
| 戴钱坤等: "一种新型机载防浪涌电压保护电路设计", 《电子技术应用》 * |
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Application publication date: 20140326 |