CN201234210Y - Switch power supply for electric pressure cooker - Google Patents
Switch power supply for electric pressure cooker Download PDFInfo
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- CN201234210Y CN201234210Y CNU2008200508644U CN200820050864U CN201234210Y CN 201234210 Y CN201234210 Y CN 201234210Y CN U2008200508644 U CNU2008200508644 U CN U2008200508644U CN 200820050864 U CN200820050864 U CN 200820050864U CN 201234210 Y CN201234210 Y CN 201234210Y
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Abstract
The utility model relates to the technical field of switching power supply, particularly to a switching power supply of an electric pressure cooker. The switching power supply comprises an input rectifying and filtering circuit provided with an input end of an AC power, an output rectifying and filtering circuit provided with an output end of a first power supply, and a switch module. The input end of the input rectifying and filtering circuit is connected with an input end of the switch module; and the output end of the switch module is connected with the input end of the output rectifying and filtering circuit. The switch module with small volume and light weight replaces a transformer, so as to output low voltage DC power with different voltages. Therefore, compared with the power circuit of the prior electric pressure cooker, the utility model has the advantages of small volume and light weight, and the electric pressure cooker can be more easily transported and moved in the using process.
Description
Technical field:
The utility model relates to the switch power technology field, relates in particular to a kind of Switching Power Supply of electric pressure cooker.
Background technology:
Emerging in recent years electric pressure cooker is the upgraded product of electric rice cooker, and the function of its current collection pot for cooking rice, pressure cooker, thermos-cooker is in one, and safety, reliable, health can be finished whole cooking process automatically.But, the power circuit of existing electric pressure cooker mainly comprises rectification circuit and transformer, the alternating current of input is through after the rectification of rectification circuit, deliver to transformer, to be converted to the low-voltage DC of different voltages by transformer, be each circuit supply of electric pressure cooker, the volume of the transformer in this kind power circuit is big, weight is heavier, be unfavorable for the transportation of electric pressure cooker and use in move.
The utility model content:
The purpose of this utility model is exactly the deficiency that exists at prior art and provide that a kind of volume is little, the Switching Power Supply of lightweight electric pressure cooker.
To achieve these goals, the technical solution adopted in the utility model is:
It comprises the input rectifying filter circuit that is provided with ac power input end, the output rectifier and filter that is provided with first power output end, switch module, the output of described input rectifying filter circuit is connected with the input of switch module, and the output of switch module is connected with the input of output rectifier and filter.
Described switch module comprises switching power source chip U1, mutual inductor T901, resistance R 902, capacitor C 901, C902, C903, C904, diode D901, D902, voltage stabilizing didoe ZD901; Wherein, the negative electrode of described diode D901 is connected with the 1st pin of switching power source chip U1, the plus earth of diode D901, capacitor C 902 is connected between the 2nd pin and the 3rd pin of switching power source chip U1, the anode of voltage stabilizing didoe ZD901 is connected with the 3rd pin of switching power source chip U1, the negative electrode of voltage stabilizing didoe ZD901 is connected with the 4th pin of switching power source chip U1, the positive pole of capacitor C 903 is connected with the negative electrode of voltage stabilizing didoe ZD901, and the negative pole of capacitor C 903 is connected with the 2nd pin of switching power source chip U1; The 5th, 6,7,8 pin of described switching power source chip U1 link together, and as the input of switch module, are connected with the output of input rectifying filter circuit; One end of resistance R 902 is connected with the 8th pin of switching power source chip U1, other end ground connection, and the positive pole of capacitor C 901 is connected minus earth with the 8th pin of switching power source chip U1; The 1st pin of mutual inductor T901 is connected with the 1st pin of switching power source chip U1, the 2nd pin ground connection of mutual inductor T901, the positive pole of the 3rd pin capacitor C 904 of mutual inductor T901 connects, the minus earth of capacitor C 904, the anode of diode D902 is connected with the positive pole of capacitor C 904, the negative electrode of diode D902 is connected with the 4th pin of switching power source chip U1, and the 4th pin of described mutual inductor T901 is the output of switch module, is connected with the input of output rectifier and filter.
The model of described switching power source chip U1 is VIPER12A.
The output of described output rectifier and filter is connected with voltage stabilizing circuit, is provided with the second source output in the voltage stabilizing circuit.
Described voltage stabilizing circuit is three-terminal voltage-stabilizing pipe U2, and the 1st pin of three-terminal voltage-stabilizing pipe U2 is connected with the output of output rectifier and filter, the 2nd pin ground connection of three-terminal voltage-stabilizing pipe U2, and the 3rd pin of three-terminal voltage-stabilizing pipe U2 is the second source output.
The model of described three-terminal voltage-stabilizing pipe U2 is LM7805.
The utility model beneficial effect is:
The Switching Power Supply of a kind of electric pressure cooker that the utility model provides comprises the input rectifying filter circuit that is provided with ac power input end, the output rectifier and filter that is provided with first power output end, switch module, the output of described input rectifying filter circuit is connected with the input of switch module, the output of switch module is connected with the input of output rectifier and filter, owing to adopted little, the lightweight switch module of volume to replace transformer, thereby realized the low-voltage DC output of different voltages; Therefore, compare, the utlity model has little, the lightweight characteristics of volume, make the easier transportation of electric pressure cooker, easier move in use with the power circuit of existing electric pressure cooker.
Description of drawings:
Fig. 1 is a block diagram of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment:
Below in conjunction with accompanying drawing the utility model is further described, see shown in Fig. 1,2, the utility model comprises the input rectifying filter circuit 1 that is provided with ac power input end, the output rectifier and filter 3 that is provided with first power output end (OUT1), switch module 2, the output of described input rectifying filter circuit 1 is connected with the input of switch module 2, and the output of switch module 2 is connected with the input of output rectifier and filter 3.
The switch module 2 of present embodiment comprises switching power source chip U1, mutual inductor T901, resistance R 902, capacitor C 901, C902, C903, C904, diode D901, D902, voltage stabilizing didoe ZD901; Wherein, the negative electrode of described diode D901 is connected with the 1st pin of switching power source chip U1, the plus earth of diode D901, capacitor C 902 is connected between the 2nd pin and the 3rd pin of switching power source chip U1, the anode of voltage stabilizing didoe ZD901 is connected with the 3rd pin of switching power source chip U1, the negative electrode of voltage stabilizing didoe ZD901 is connected with the 4th pin of switching power source chip U1, the positive pole of capacitor C 903 is connected with the negative electrode of voltage stabilizing didoe ZD901, and the negative pole of capacitor C 903 is connected with the 2nd pin of switching power source chip U1; The 5th, 6,7,8 pin of described switching power source chip U1 link together, and as the input of switch module 2, are connected with the output of input rectifying filter circuit 1; One end of resistance R 902 is connected with the 8th pin of switching power source chip U1, other end ground connection, and the positive pole of capacitor C 901 is connected minus earth with the 8th pin of switching power source chip U1; The 1st pin of mutual inductor T901 is connected with the 1st pin of switching power source chip U1, the 2nd pin ground connection of mutual inductor T901, the positive pole of the 3rd pin capacitor C 904 of mutual inductor T901 connects, the minus earth of capacitor C 904, the anode of diode D902 is connected with the positive pole of capacitor C 904, the negative electrode of diode D902 is connected with the 4th pin of switching power source chip U1, and the 4th pin of described mutual inductor T901 is the output of switch module 2, is connected with the input of output rectifier and filter 3; In the present embodiment, the model of described switching power source chip U1 is VIPER12A, and certainly, described switching power source chip U1 also can select the switching power source chip of other model for use.
In the present embodiment, in order to satisfy the power supply needs of different circuit, except first power output end (OUT1) of above-mentioned output rectifier and filter 3, the output of described output rectifier and filter 3 further is connected with voltage stabilizing circuit 4, be provided with second source output (OUT2) in the voltage stabilizing circuit 4, wherein, first power output end (OUT1) is different with the output voltage of second source output (OUT2), in the present embodiment, the output voltage of first power output end (OUT1) is 12V, and the output voltage of second source output (OUT2) is 5V.
The voltage stabilizing circuit 4 of present embodiment is three-terminal voltage-stabilizing pipe U2, the 1st pin of three-terminal voltage-stabilizing pipe U2 is connected with the output of output rectifier and filter 3, the 2nd pin ground connection of three-terminal voltage-stabilizing pipe U2, the 3rd pin of three-terminal voltage-stabilizing pipe U2 is second source output (OUT2), wherein, the model of described three-terminal voltage-stabilizing pipe U2 is LM7805, and certainly, described three-terminal voltage-stabilizing pipe U2 also can select the voltage stabilizing chip of other model for use.
Operation principle of the present utility model:
When the ac power input end of input rectifying filter circuit 1 has the alternating current input, after mainly the input rectifying filter circuit of being made up of bridge rectifier BD1 1 is converted to Rectified alternating current with the alternating current of importing, deliver to the input of switch module 2, switch module 2 is converted to the Rectified alternating current of input the low-voltage DC of two groups of different voltages, the 4th pin output by mutual inductor T901, and send into output rectifier and filter 3, after the low-voltage DC of 3 pairs of inputs of output rectifier and filter carries out rectifying and wave-filtering, by first power output end (OUT1) output, first output voltage, and because the output of output rectifier and filter 3 further is connected with voltage stabilizing circuit 4, output rectifier and filter 3 can be exported to first output voltage input of voltage stabilizing circuit 4 simultaneously, first output voltage through voltage stabilizing circuit 4 after, by output second output voltage of the second source output (OUT2) of voltage stabilizing circuit 4.Therefore, compare with the power circuit of existing electric pressure cooker, the utility model has adopted little, the lightweight switch module of volume to replace transformer, thereby realizes the low-voltage DC output of different voltages; Therefore, the utlity model has little, the lightweight characteristics of volume.
Certainly, the above only is preferred embodiment of the present utility model, so all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, is included in the utility model patent claim.
Claims (6)
1, a kind of Switching Power Supply of electric pressure cooker, it comprises the input rectifying filter circuit that is provided with ac power input end, the output rectifier and filter that is provided with first power output end, it is characterized in that: it also comprises switch module, the output of described input rectifying filter circuit is connected with the input of switch module, and the output of switch module is connected with the input of output rectifier and filter.
2, the Switching Power Supply of a kind of electric pressure cooker according to claim 1, it is characterized in that: described switch module comprises switching power source chip U1, mutual inductor T901, resistance R 902, capacitor C 901, C902, C903, C904, diode D901, D902, voltage stabilizing didoe ZD901;
Wherein, the negative electrode of described diode D901 is connected with the 1st pin of switching power source chip U1, the plus earth of diode D901, capacitor C 902 is connected between the 2nd pin and the 3rd pin of switching power source chip U1, the anode of voltage stabilizing didoe ZD901 is connected with the 3rd pin of switching power source chip U1, the negative electrode of voltage stabilizing didoe ZD901 is connected with the 4th pin of switching power source chip U1, the positive pole of capacitor C 903 is connected with the negative electrode of voltage stabilizing didoe ZD901, and the negative pole of capacitor C 903 is connected with the 2nd pin of switching power source chip U1; The 5th, 6,7,8 pin of described switching power source chip U1 link together, and as the input of switch module, are connected with the output of input rectifying filter circuit; One end of resistance R 902 is connected with the 8th pin of switching power source chip U1, other end ground connection, and the positive pole of capacitor C 901 is connected minus earth with the 8th pin of switching power source chip U1; The 1st pin of mutual inductor T901 is connected with the 1st pin of switching power source chip U1, the 2nd pin ground connection of mutual inductor T901, the positive pole of the 3rd pin capacitor C 904 of mutual inductor T901 connects, the minus earth of capacitor C 904, the anode of diode D902 is connected with the positive pole of capacitor C 904, the negative electrode of diode D902 is connected with the 4th pin of switching power source chip U1, and the 4th pin of described mutual inductor T901 is the output of switch module, is connected with the input of output rectifier and filter.
3, the Switching Power Supply of a kind of electric pressure cooker according to claim 2 is characterized in that: the model of described switching power source chip U1 is VIPER12A.
4, the Switching Power Supply of a kind of electric pressure cooker according to claim 1 is characterized in that: the output of described output rectifier and filter is connected with voltage stabilizing circuit, is provided with the second source output in the voltage stabilizing circuit.
5, the Switching Power Supply of a kind of electric pressure cooker according to claim 4, it is characterized in that: described voltage stabilizing circuit is three-terminal voltage-stabilizing pipe U2, the 1st pin of three-terminal voltage-stabilizing pipe U2 is connected with the output of output rectifier and filter, the 2nd pin ground connection of three-terminal voltage-stabilizing pipe U2, the 3rd pin of three-terminal voltage-stabilizing pipe U2 is the second source output.
6, the Switching Power Supply of a kind of electric pressure cooker according to claim 5 is characterized in that: the model of described three-terminal voltage-stabilizing pipe U2 is LM7805.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200508644U CN201234210Y (en) | 2008-07-18 | 2008-07-18 | Switch power supply for electric pressure cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200508644U CN201234210Y (en) | 2008-07-18 | 2008-07-18 | Switch power supply for electric pressure cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201234210Y true CN201234210Y (en) | 2009-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200508644U Expired - Fee Related CN201234210Y (en) | 2008-07-18 | 2008-07-18 | Switch power supply for electric pressure cooker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201234210Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107070260A (en) * | 2016-11-28 | 2017-08-18 | 中核核电运行管理有限公司 | A kind of high-performance electric source module |
-
2008
- 2008-07-18 CN CNU2008200508644U patent/CN201234210Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107070260A (en) * | 2016-11-28 | 2017-08-18 | 中核核电运行管理有限公司 | A kind of high-performance electric source module |
| CN107070260B (en) * | 2016-11-28 | 2023-10-20 | 中核核电运行管理有限公司 | High-performance power module |
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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: 20090506 Termination date: 20150718 |
|
| EXPY | Termination of patent right or utility model |