CN2864700Y - Zero-cross detecting circuit and refrigerator employing same - Google Patents
Zero-cross detecting circuit and refrigerator employing same Download PDFInfo
- Publication number
- CN2864700Y CN2864700Y CN 200520088018 CN200520088018U CN2864700Y CN 2864700 Y CN2864700 Y CN 2864700Y CN 200520088018 CN200520088018 CN 200520088018 CN 200520088018 U CN200520088018 U CN 200520088018U CN 2864700 Y CN2864700 Y CN 2864700Y
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- detection circuit
- zero cross
- cross detection
- refrigerator
- triode
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Abstract
The utility model belongs to the checking technique, in particular to a zero-crossing circuit and relative refrigerator. The invention comprises a transistor whose base is connected with the resistances R101, R102, emitter is grounded, and collector is connected with the resistances R103, R104, while the R103 is connected with the 5V direct-current power source. The invention uses the voltage jump of transistor to control the single chip, to make the device work near the zero point of voltage, thereby prolonging the service life of refrigerator.
Description
Technical field
The utility model belongs to the detection technique field, particularly a kind ofly is applied in zero cross detection circuit in the refrigerator.
Background technology
Prior art, for the get access to grid device control of voltage of refrigerator, generally be whether to control its work by the components and parts of similar relay, because mains voltage waveform one sine wave of electrical network, the refrigerator device is connected the voltage of moment may be non-vanishing, for the refrigerator device, there is big in a flash electric current to flow through like this, big electric current is a kind of damages to components and parts, long-term big electric current can shorten its life-span to the impact of device, and electric spark that its action produces and big electric current also are a kind of pollutions to electrical network, so the application zero passage detection becomes the technical issues that need to address in the refrigerator.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned defective, and a kind of zero cross detection circuit that prolongs the life-span of refrigerator device is provided.
Because the mains voltage waveform of electrical network is a sine wave, if device is connected at sine-way zero in the control refrigerator, it is almost nil that the refrigerator device is connected the electric current of moment so, and this not only can prolong the life-span of refrigerator device greatly, and makes the refrigerator device almost nil to the pollution of electrical network.
For reaching above-mentioned purpose, zero cross detection circuit of the present utility model is achieved in that it comprises triode, wherein the base stage of triode is connected with resistance R 101, R102, grounded emitter, collector connects resistance R 103, R104, and R103 links to each other with the direct supply of 5V.Its resistance R 101 is that 100K Ω, R103 are that 10K Ω, R104 are 2.2K Ω for 10K Ω, R102.
Refrigerator of the present utility model is achieved in that it comprises control circuit, and control circuit comprises transformer, the single-chip microcomputer that is connected with electrical network, is connected zero cross detection circuit between transformer output terminal and single-chip microcomputer input end.Zero cross detection circuit comprises triode, and wherein the base stage of triode is connected with resistance R 101, R102, grounded emitter, and collector connects resistance R 103, R104, and R103 links to each other with the direct supply of 5V.Its resistance R 101 is that 100K Ω, R103 are that 10K Ω, R104 are 2.2K Ω for 10K Ω, R102.R101 links to each other with the transformer output terminal, and single-chip microcomputer is connected with transistor collector by R104.
Description of drawings
Fig. 1 is a circuit theory synoptic diagram of the present utility model.
Embodiment
Refrigerator of the present utility model comprises control circuit, control circuit comprises transformer, the single-chip microcomputer that is connected with electrical network, between transformer output terminal and single-chip microcomputer input end, be connected zero cross detection circuit, zero cross detection circuit comprises triode, wherein the base stage of triode is connected with resistance R 101, R102, grounded emitter, collector connects resistance R 103, R104, and R103 links to each other with the direct supply of 5V.Wherein resistance R 101 is that 100K Ω, R103 are that 10K Ω, R104 are 2.2K Ω for 10K Ω, R102.R101 links to each other with the transformer output terminal, and single-chip microcomputer is connected with transistor collector by R104.Alternating current 220V voltage is by the alternating current of transformer output 11V, and the transformer output voltage is by detecting R101, the R102 dividing potential drop in the loop.Be higher than 0.7V when output voltage rises, promptly be higher than triode V101 forward voltage, the triode conducting, the current collection of triode is low-voltage very, and the high level of single-chip microcomputer input pin becomes low level, and single-chip microcomputer is not worked; Be reduced to 0.7V under output voltage, promptly be lower than triode V101 forward voltage, triode ends, and the current collection of triode is high voltage very, and the input pin of single-chip microcomputer becomes high level, single-chip microcomputer work.Like this, supply voltage is when zero crossing, and triode voltage generation saltus step by the work that the saltus step of triode voltage comes control single chip computer, can be guaranteed that the device that gets access to grid works near zero point at supply voltage, thereby prolong the serviceable life of refrigerator device.
Claims (5)
1. a zero cross detection circuit is characterized in that it comprises triode, and the base stage of triode is connected with resistance R 101, R102, grounded emitter, and collector connects resistance R 103, R104, and R103 links to each other with the direct supply of 5V.
2. zero cross detection circuit according to claim 1 is characterized in that, R101 is that 10K Ω, R102 are that 100K Ω, R103 are that 10K Ω, R104 are 2.2K Ω.
3. refrigerator that adopts the described zero cross detection circuit of claim 1, it comprises control circuit, control circuit comprises transformer, the single-chip microcomputer that is connected with electrical network, it is characterized in that, is connected zero cross detection circuit between transformer output terminal and single-chip microcomputer input end.
4. the refrigerator of employing zero cross detection circuit according to claim 3, it is characterized in that, zero cross detection circuit comprises triode, the base stage of triode is connected with resistance R 101, R102, grounded emitter, collector connects resistance R 103, R104, and R103 links to each other with the direct supply of 5V, wherein R101 links to each other with the transformer output terminal, and single-chip microcomputer is connected with transistor collector by R104.
5. the refrigerator of employing zero cross detection circuit according to claim 3 is characterized in that, the R101 in the zero cross detection circuit is that 10K Ω, R102 are that 100K Ω, R103 are that 10K Ω, R104 are 2.2K Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520088018 CN2864700Y (en) | 2005-11-01 | 2005-11-01 | Zero-cross detecting circuit and refrigerator employing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520088018 CN2864700Y (en) | 2005-11-01 | 2005-11-01 | Zero-cross detecting circuit and refrigerator employing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2864700Y true CN2864700Y (en) | 2007-01-31 |
Family
ID=37677151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520088018 Expired - Fee Related CN2864700Y (en) | 2005-11-01 | 2005-11-01 | Zero-cross detecting circuit and refrigerator employing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2864700Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102033156A (en) * | 2010-11-11 | 2011-04-27 | 苏州合欣美电子科技有限公司 | Zero-crossing detection circuit of ecological house |
| CN102175905A (en) * | 2011-01-25 | 2011-09-07 | 深圳和而泰智能控制股份有限公司 | Zero crossing detecting circuit and device and warm air blower |
| CN102645576A (en) * | 2012-05-17 | 2012-08-22 | 合肥工业大学 | Device and method for detecting zero crossing point of inductive current |
| CN102901861A (en) * | 2011-07-28 | 2013-01-30 | 兄弟工业株式会社 | Zero-crossing detector circuit and image forming apparatus having the same |
| CN103095160A (en) * | 2011-11-02 | 2013-05-08 | 兄弟工业株式会社 | Power Supply System, Image Forming Apparatus Having The Same, And Low-capacity Power Supply Circuit |
| CN103698588A (en) * | 2012-09-27 | 2014-04-02 | 无锡华润矽科微电子有限公司 | Zero-crossing detection circuit structure |
| CN104237615A (en) * | 2013-06-09 | 2014-12-24 | 中兴通讯股份有限公司 | Current zero-crossing detection device, signal acquisition circuit and circuit system |
| CN106771529A (en) * | 2016-11-25 | 2017-05-31 | 安徽美芝制冷设备有限公司 | Refrigerator and the zero cross detection circuit for refrigerator |
| CN109061278A (en) * | 2018-06-19 | 2018-12-21 | 飞雕电器集团有限公司 | A kind of zero cross detection circuit of super low-power consumption |
-
2005
- 2005-11-01 CN CN 200520088018 patent/CN2864700Y/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102033156A (en) * | 2010-11-11 | 2011-04-27 | 苏州合欣美电子科技有限公司 | Zero-crossing detection circuit of ecological house |
| CN102175905A (en) * | 2011-01-25 | 2011-09-07 | 深圳和而泰智能控制股份有限公司 | Zero crossing detecting circuit and device and warm air blower |
| CN102901861B (en) * | 2011-07-28 | 2015-12-02 | 兄弟工业株式会社 | Zero-crossing detector circuit and the image forming apparatus with zero-crossing detector circuit |
| CN102901861A (en) * | 2011-07-28 | 2013-01-30 | 兄弟工业株式会社 | Zero-crossing detector circuit and image forming apparatus having the same |
| US8912468B2 (en) | 2011-07-28 | 2014-12-16 | Brother Kogyo Kabushiki Kaisha | Zero-crossing detector circuit and image forming apparatus having the same |
| CN103095160A (en) * | 2011-11-02 | 2013-05-08 | 兄弟工业株式会社 | Power Supply System, Image Forming Apparatus Having The Same, And Low-capacity Power Supply Circuit |
| CN103095160B (en) * | 2011-11-02 | 2016-08-03 | 兄弟工业株式会社 | Power-supply system, image forming apparatus and low capacity power circuit |
| CN102645576B (en) * | 2012-05-17 | 2014-11-12 | 合肥工业大学 | Device and method for detecting zero crossing point of inductive current |
| CN102645576A (en) * | 2012-05-17 | 2012-08-22 | 合肥工业大学 | Device and method for detecting zero crossing point of inductive current |
| CN103698588A (en) * | 2012-09-27 | 2014-04-02 | 无锡华润矽科微电子有限公司 | Zero-crossing detection circuit structure |
| CN104237615A (en) * | 2013-06-09 | 2014-12-24 | 中兴通讯股份有限公司 | Current zero-crossing detection device, signal acquisition circuit and circuit system |
| CN104237615B (en) * | 2013-06-09 | 2019-03-12 | 中兴通讯股份有限公司 | Current over-zero detection device, signal acquisition circuit and circuit system |
| CN106771529A (en) * | 2016-11-25 | 2017-05-31 | 安徽美芝制冷设备有限公司 | Refrigerator and the zero cross detection circuit for refrigerator |
| CN109061278A (en) * | 2018-06-19 | 2018-12-21 | 飞雕电器集团有限公司 | A kind of zero cross detection circuit of super low-power consumption |
| CN109061278B (en) * | 2018-06-19 | 2020-11-13 | 飞雕电器集团有限公司 | Zero-crossing detection circuit with ultralow power consumption |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HAIXIN (BEIJING ) ELECTRICAL APPLIANCE CO., LTD. Free format text: FORMER OWNER: HAIXIN GROUP CO., LTD. Effective date: 20071026 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20071026 Address after: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Patentee after: Hisence (Beijing) Electrical Appliance Co., Ltd. Address before: Donghai West Road 266071 Shandong city of Qingdao province No. 17 Patentee before: Hisense Group Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070131 Termination date: 20111101 |