CN201181977Y - Booster circuit, radio-frequency head tuning voltage circuit and television set - Google Patents
Booster circuit, radio-frequency head tuning voltage circuit and television set Download PDFInfo
- Publication number
- CN201181977Y CN201181977Y CNU2008200932307U CN200820093230U CN201181977Y CN 201181977 Y CN201181977 Y CN 201181977Y CN U2008200932307 U CNU2008200932307 U CN U2008200932307U CN 200820093230 U CN200820093230 U CN 200820093230U CN 201181977 Y CN201181977 Y CN 201181977Y
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- voltage
- circuit
- booster circuit
- filtering
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Abstract
The utility model provides a boost circuit, a high-frequency head tuning voltage circuit and a television, which are applied to household electrical appliances. The boost circuit comprises an input voltage superposition circuit and a rectification filter circuit. In the utility model, the boost circuit is used for replacing the boost chip, so the circuit has the advantages of simple structure, low cost and high reliability; and different input voltages can be selected for superposition, and the amplitude values of the input voltages can be regulated, thereby acquiring direct current volatages with different amplitude values.
Description
Technical field
The utility model belongs to household appliance technical field, relates in particular to a kind of booster circuit, tuner tuning voltage circuit and television set.
Background technology
At present, household electrical appliance are used in the middle of the family life widely, wherein, all be provided with booster circuit in the power circuit of household electrical appliance, present booster circuit substantially all realizes by the chip that boosts, and powers by the special use chip that boosts exactly such as television tuner tuning voltage circuit, but adopts the special use chip that boosts to exist cost higher, adjustability is not high, the shortcoming that reliability is relatively poor.
Summary of the invention
The purpose of this utility model is to provide a kind of booster circuit, is intended to solve existing booster circuit and exists cost higher because of the employing chip that boosts, and adjustability is not high, the problem that reliability is relatively poor.
The utility model is achieved in that a kind of booster circuit, and described circuit comprises:
The input voltage supercircuit, its a plurality of inputs connect different input voltages respectively, and this circuit is adjusted the range value of described input voltage and export the back that superposes; And
Current rectifying and wave filtering circuit, its input connects the output of described input voltage supercircuit, and the voltage that the back that superposes is exported carries out rectifying and wave-filtering, and output is through the direct voltage after boosting.
Another purpose of the present utility model is to provide a kind of tuner tuning voltage circuit, described tuner tuning voltage circuit contains above-mentioned booster circuit, the output termination rectification filtering voltage stabilizing circuit of described booster circuit, the direct voltage of booster circuit output is exported to tuner through behind the rectification filtering voltage stabilizing circuit.
Another purpose of the present utility model is to provide a kind of television set that contains above-mentioned tuner tuning voltage circuit.
In the utility model, adopt this booster circuit to replace the chip that boosts, make that this circuit structure is simple, with low cost, reliability is high, and can select different input voltages to superpose, and can adjust, thereby obtain the direct voltage of different range values to the range value of input voltage.
Description of drawings
Fig. 1 is the circuit theory diagrams of the booster circuit that provides of the utility model;
Fig. 2 is the voltage oscillogram of the booster circuit key node that provides of the utility model;
Fig. 3 is the circuit theory diagrams of the tuner tuning voltage circuit that provides of the utility model.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Fig. 1 shows the circuit structure of the booster circuit that the utility model provides, and for convenience of explanation, only shows the part relevant with the utility model.
Resistance R
1, resistance R
2, resistance R
3, resistance R
4, diode D
1And capacitor C
1Form the input voltage supercircuit, and diode D
2With electrochemical capacitor C
3Form current rectifying and wave filtering circuit.
As an embodiment of the present utility model, an input input direct voltage V of booster circuit
CC, it is through resistance R
1, connected resistance R over the ground
3After boosting, again through diode D
1After the conducting, arrive V
1Node is by adjusting resistance R
1Or resistance R
3Resistance, can obtain suitable voltage amplitude value, another input input pulse voltage V of booster circuit
P, it is through resistance R
2, connected resistance R over the ground
4After boosting, again through capacitor C
1, with arrival V
1The direct voltage stack of node is by adjusting resistance R
2Or resistance R
4Resistance, also can obtain suitable pulse voltage V
PRange value, the voltage signal after the stack is through diode D
2With electrochemical capacitor C
3After carrying out rectifying and wave-filtering, promptly exportable stably through the direct voltage V after boosting
2The voltage signal type of booster circuit input input is not limited to above-mentioned two kinds, can make full use of the purpose that various voltage signal types realize DC boosting.
Fig. 2 shows the voltage waveform of the booster circuit key node that the utility model provides, direct voltage V
CCWith pulse voltage V
PThe voltage amplitude value can adjust direct voltage V by the resistance value that changes booster circuit
CCWaveform and pulse voltage V
PWaveform forms V through the stack back
1The node voltage waveform, its voltage amplitude value equals direct voltage V
CCWith pulse voltage V
PVoltage amplitude value sum, also to deduct resistance R
1, resistance R
2With diode D
1On pressure drop, V
2The node voltage waveform is V
1The waveform of node voltage through obtaining behind the rectifying and wave-filtering, its voltage amplitude value equals V
1The voltage amplitude value of node voltage deducts diode D
2On pressure drop, V
2The voltage of node output is the direct voltage after boosting.
Fig. 3 shows the circuit structure of the tuner tuning voltage circuit that the utility model provides, and for convenience of explanation, only shows the part relevant with the utility model.
V
2The direct voltage that the above-mentioned booster circuit of process of node output boosts passes through by capacitor C again
2, electrochemical capacitor C
5, capacitor C
4, electrochemical capacitor C
6, capacitor C
7, diode D
3, diode D
4, voltage stabilizing didoe D
5With adjustable resistance R
5After the rectification filtering voltage stabilizing circuit rectification of forming, filtering, the voltage stabilizing, for the tuner of television set provides tuning voltage.Wherein, change adjustable resistance R
5Resistance value can adjust the voltage amplitude value of tuning voltage, for the tuner of television set provides suitable tuning voltage.Such as, the direct voltage V of tuner tuning voltage circuit input
CCWith pulse voltage V
PThe voltage amplitude value be 12V all, deduct resistance R
1, resistance R
2, adjustable resistance R
5, diode D
1, diode D
2, diode D
3With diode D
4On pressure drop, again through electrochemical capacitor C
6, capacitor C
7Filtering and voltage stabilizing didoe D
5After (33V voltage stabilizing didoe), obtain the direct voltage of 33V, for the tuner of television set provides tuning voltage.
In the utility model, adopt this booster circuit to replace the chip that boosts, make that this circuit structure is simple, with low cost, reliability is high, and can select different input voltages to superpose, and can adjust, thereby obtain the direct voltage of different range values to the range value of input voltage.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (5)
1, a kind of booster circuit is characterized in that, described circuit comprises:
The input voltage supercircuit, its a plurality of inputs connect different input voltages respectively, and this circuit is adjusted the range value of described input voltage and export the back that superposes; And
Current rectifying and wave filtering circuit, its input connects the output of described input voltage supercircuit, and the voltage that the back that superposes is exported carries out rectifying and wave-filtering, and output is through the direct voltage after boosting.
2, booster circuit as claimed in claim 1, it is characterized in that, described input voltage supercircuit specifically comprises two inputs, connect direct voltage and pulse voltage respectively, the input voltage supercircuit is adjusted the range value of described direct voltage and pulse voltage by the resistance value that changes resistance, and to its back output that superposes.
3, booster circuit as claimed in claim 2 is characterized in that, the voltage that described current rectifying and wave filtering circuit adopts rectifier diode and electrochemical capacitor that described input voltage supercircuit is exported carries out rectifying and wave-filtering.
4, a kind of tuner tuning voltage circuit, its output termination tuner, it is characterized in that, described tuner tuning voltage circuit comprises the described booster circuit of claim 1, the output termination rectification filtering voltage stabilizing circuit of described booster circuit, the direct voltage of booster circuit output is exported to tuner through behind the rectification filtering voltage stabilizing circuit.
5, a kind of television set that comprises the described tuner tuning voltage of claim 4 circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200932307U CN201181977Y (en) | 2008-03-31 | 2008-03-31 | Booster circuit, radio-frequency head tuning voltage circuit and television set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200932307U CN201181977Y (en) | 2008-03-31 | 2008-03-31 | Booster circuit, radio-frequency head tuning voltage circuit and television set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201181977Y true CN201181977Y (en) | 2009-01-14 |
Family
ID=40251469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200932307U Expired - Fee Related CN201181977Y (en) | 2008-03-31 | 2008-03-31 | Booster circuit, radio-frequency head tuning voltage circuit and television set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201181977Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751892A (en) * | 2012-07-17 | 2012-10-24 | 乐清市信达利实业有限公司 | Alternating current voltage sampling circuit of inverter and inverter comprising same |
| CN103595254A (en) * | 2013-10-18 | 2014-02-19 | 上海交通大学 | Multistage direct current circuit with controllable voltage |
| CN103595270A (en) * | 2013-10-18 | 2014-02-19 | 上海交通大学 | Passive rectifying circuit |
| CN104753366A (en) * | 2013-12-31 | 2015-07-01 | 鸿富锦精密工业（深圳）有限公司 | Positive and negative voltage generating circuit, liquid crystal display module drive system and IP phone |
| CN104953830A (en) * | 2015-06-03 | 2015-09-30 | 广东欧珀移动通信有限公司 | Boosted circuit and power switch |
-
2008
- 2008-03-31 CN CNU2008200932307U patent/CN201181977Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751892A (en) * | 2012-07-17 | 2012-10-24 | 乐清市信达利实业有限公司 | Alternating current voltage sampling circuit of inverter and inverter comprising same |
| CN102751892B (en) * | 2012-07-17 | 2015-07-15 | 乐清市信达利实业有限公司 | Alternating current voltage sampling circuit of inverter and inverter comprising same |
| CN103595254A (en) * | 2013-10-18 | 2014-02-19 | 上海交通大学 | Multistage direct current circuit with controllable voltage |
| CN103595270A (en) * | 2013-10-18 | 2014-02-19 | 上海交通大学 | Passive rectifying circuit |
| CN103595254B (en) * | 2013-10-18 | 2016-01-13 | 上海交通大学 | The multistage direct current circuit that voltage is controlled |
| CN103595270B (en) * | 2013-10-18 | 2016-12-07 | 上海交通大学 | Inactive rectification circuit |
| CN104753366A (en) * | 2013-12-31 | 2015-07-01 | 鸿富锦精密工业（深圳）有限公司 | Positive and negative voltage generating circuit, liquid crystal display module drive system and IP phone |
| CN104953830A (en) * | 2015-06-03 | 2015-09-30 | 广东欧珀移动通信有限公司 | Boosted circuit and power switch |
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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: 20090114 Termination date: 20150331 |
|
| EXPY | Termination of patent right or utility model |