CN2419765Y - Low power consumption power supply for television set at ready status - Google Patents
Low power consumption power supply for television set at ready status Download PDFInfo
- Publication number
- CN2419765Y CN2419765Y CN00213473.XU CN00213473U CN2419765Y CN 2419765 Y CN2419765 Y CN 2419765Y CN 00213473 U CN00213473 U CN 00213473U CN 2419765 Y CN2419765 Y CN 2419765Y
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- power supply
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- 238000001914 filtration Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000007423 decrease Effects 0.000 abstract 1
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000005265 energy consumption Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Television Receiver Circuits (AREA)
Abstract
本实用新型是一种低功耗待机电视机电源,其控制电路的芯片采用TDA4605－3,该控制电路芯片的反馈电压输入脚通过光电耦合器中光敏三极管的集电极和发射极连接电压源;该光电耦合器的发光二极管通过开关电路连接电源,该开关电路的控制输入端连接电视机的电源开关。本实用新型结构简单,成本非常低廉,针对西门子公司的TDA4605－3芯片设计。其反馈电压大时,该芯片输出脉冲的占空比减小,开关电源处于待机状态。当整机待机时,电源的输出电压由于回扫变压器+15V的关断而变为0,大大的降低了待机负载的消耗功率。
The utility model is a low power consumption standby TV power supply, the control circuit chip adopts TDA4605-3, the feedback voltage input pin of the control circuit chip is connected to the voltage source through the collector and emitter of the photosensitive triode in the photocoupler; The light-emitting diode of the photocoupler is connected to the power supply through the switch circuit, and the control input end of the switch circuit is connected to the power switch of the TV set. The utility model has simple structure and very low cost, and is designed for the TDA4605-3 chip of Siemens. When the feedback voltage is large, the duty ratio of the output pulse of the chip decreases, and the switching power supply is in a standby state. When the whole unit is in standby, the output voltage of the power supply becomes 0 due to the shutdown of the flyback transformer +15V, which greatly reduces the power consumption of the standby load.
Description
The utility model belongs to television set, and the power supply of color television set especially is specifically related to the design of stand-by circuit.
In the existing TV set power design, stand-by circuit is arranged all generally before the utility model is made, make Switching Power Supply when standby, be in low power consumpting state.Television set competition at present is constantly fierce, and the requirement of minimization of cost is more and more important; The design cost of the stand-by circuit of existing Switching Power Supply is than higher, and structure is simple inadequately.TDA4605-3 chip at Siemens Company does not have suitable stand-by circuit to apply mechanically simultaneously.
The purpose of this utility model is for addressing the above problem, provide a kind of circuit simple, make power supply low in energy consumption when holding state, and low-power consumption standby TV set power with low cost.
For achieving the above object, the utility model is a kind of low-power consumption standby TV set power that realizes like this, it is made up of current rectifying and wave filtering circuit, switch transformer, integrated package of pressure-stabilizing, sampling amplification circuit and control circuit etc., wherein the chip of control circuit adopts, and the feedback voltage input pin of this control circuit chip connects voltage source by the collector and emitter of phototriode in the photoelectrical coupler; The light-emitting diode of this photoelectrical coupler connects power supply by switching circuit, and the control input end of this switching circuit connects the mains switch of television set.
Above-mentioned voltage source is by the voltage on the divider resistance in the bleeder circuit, and the collector and emitter of phototriode is connected in this bleeder circuit in the described photoelectrical coupler, constitutes the switch of this bleeder circuit.
Conduction terminal connection+125V the power supply of the light-emitting diode of above-mentioned photoelectrical coupler, it is by the collector and emitter ground connection of end by triode, the base stage of this triode is by the collector and emitter ground connection of triode, and the base stage of triode also connects+the 25V power supply; The base stage of triode connects the emitter of triode, and the base stage of triode connects the mains switch of television set, its collector electrode connection+5V power supply.
Advantage of the present utility model and base stage effect be, stand-by circuit of the present utility model is simple in structure, and cost is very cheap; Simultaneously, at TDA4605-3 chip design, the coupling of Siemens Company.When the voltage of its feedback voltage input input was big, this chip output duty of ratio reduced, and Switching Power Supply is in the holding state of intermittent oscillation.When the complete machine standby, the output voltage of power supply has reduced the consumed power of standby load greatly owing to the shutoff of kickback transformer+15V becomes 0.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the structured flowchart of TV set power;
Fig. 2 is the circuit diagram of an embodiment of the utility model.
As shown in Figure 1, a kind of low-power consumption standby TV set power, it is made up of current rectifying and wave filtering circuit, switch transformer, integrated package of pressure-stabilizing, sampling amplification circuit and control circuit etc., and wherein the chip N01 of control circuit adopts TDA4605-3.
As shown in Figure 2, the feedback voltage input pin N01-1 of this control circuit chip N01 connects voltage source by the collector and emitter of phototriode among the photoelectrical coupler N08; It is that voltage source is to be made of the divider resistance R805 in the bleeder circuit that its concrete circuit connects, the collector electrode of phototriode connects power supply by diode VD802 among the photoelectrical coupler N08, its emitter passes through divider resistance R804, R805 ground connection, the switch of this bleeder circuit of the actual formation of phototriode.
As shown in Figure 2, the light-emitting diode of this photoelectrical coupler N08 connects power supply by switching circuit, the control input end of this switching circuit connects the mains switch of television set, the conduction terminal of the light-emitting diode that its concrete circuit connection is photoelectrical coupler N08 is connected+the 125V power supply with the loop of resistance R 06 series connection by resistance R 07 with by voltage stabilizing didoe VD09, it is by the collector and emitter ground connection of end by diode VD08 and triode V03, this triode V03 is a positive-negative-positive, its base stage is by the collector and emitter ground connection of voltage stabilizing didoe VD07 and triode V02, also by resistance R 10 ground connection, the base stage of triode V03 also connects+the 25V power supply simultaneously; Triode V02 is a positive-negative-positive, its base stage connects the emitter of triode V06, and triode V06 is the NPN type, and its base stage connects the mains switch of television set, also connect the loop of resistance R 08 and capacitor C 08 composition simultaneously and pass through resistance R 05 ground connection, its collector electrode connection+5V power supply.
When this power supply uses, when TV set power POWER ON/OFF pin is low level, triode V06 conducting, its collector electrode output high level impels the V02 conducting, and the current collection of V02 is low level very, and triode V03 ends, and power supply is in normal operating conditions.When TV set power POWER ON/OFF pin is high level, triode V06 ends, its collector electrode output low level, V02 ends, its current collection is high level very, impel triode V03 conducting, electrorheological very big of the light-emitting diode among the photoelectrical coupler N08 flow through in the VD08 conducting, the electric current that flows through the phototriode among the photoelectrical coupler N08 also becomes big, the 1 pin voltage that feeds back to TDA4605-3 becomes big, impel the output duty of ratio of its 5th pin sharply to reduce, Switching Power Supply is in the holding state of intermittent oscillation.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00213473.XU CN2419765Y (en) | 2000-02-02 | 2000-02-02 | Low power consumption power supply for television set at ready status |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00213473.XU CN2419765Y (en) | 2000-02-02 | 2000-02-02 | Low power consumption power supply for television set at ready status |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2419765Y true CN2419765Y (en) | 2001-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00213473.XU Expired - Fee Related CN2419765Y (en) | 2000-02-02 | 2000-02-02 | Low power consumption power supply for television set at ready status |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100367782C (en) * | 2004-03-26 | 2008-02-06 | 四川长虹电器股份有限公司 | Method and device for single tube reverse exciting power source for realizing low standby power loss |
| CN100414982C (en) * | 2006-06-12 | 2008-08-27 | 海信集团有限公司 | TV set low-power consumption standby controlling method based on single chip microcomputer |
| CN101917575A (en) * | 2010-07-23 | 2010-12-15 | 深圳创维－Rgb电子有限公司 | LED-TV power supply circuit |
| CN102300068A (en) * | 2011-09-17 | 2011-12-28 | 广东佳明电器有限公司 | Energy-saving standby circuit for television |
| CN103280978A (en) * | 2013-06-28 | 2013-09-04 | 广州视源电子科技股份有限公司 | Low-power consumption standby circuit based on load mainboard feedback signal |
| CN109951076A (en) * | 2019-04-11 | 2019-06-28 | 成都盛芯微科技有限公司 | A kind of adaptive dutyfactor adjusting method of Switching Power Supply reducing system sleep power consumption |
-
2000
- 2000-02-02 CN CN00213473.XU patent/CN2419765Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100367782C (en) * | 2004-03-26 | 2008-02-06 | 四川长虹电器股份有限公司 | Method and device for single tube reverse exciting power source for realizing low standby power loss |
| CN100414982C (en) * | 2006-06-12 | 2008-08-27 | 海信集团有限公司 | TV set low-power consumption standby controlling method based on single chip microcomputer |
| CN101917575A (en) * | 2010-07-23 | 2010-12-15 | 深圳创维－Rgb电子有限公司 | LED-TV power supply circuit |
| CN101917575B (en) * | 2010-07-23 | 2012-11-14 | 深圳创维－Rgb电子有限公司 | LED-TV power supply circuit |
| CN102300068A (en) * | 2011-09-17 | 2011-12-28 | 广东佳明电器有限公司 | Energy-saving standby circuit for television |
| CN102300068B (en) * | 2011-09-17 | 2013-04-17 | 广东佳明电器有限公司 | Energy-saving standby circuit for television |
| CN103280978A (en) * | 2013-06-28 | 2013-09-04 | 广州视源电子科技股份有限公司 | Low-power consumption standby circuit based on load mainboard feedback signal |
| CN109951076A (en) * | 2019-04-11 | 2019-06-28 | 成都盛芯微科技有限公司 | A kind of adaptive dutyfactor adjusting method of Switching Power Supply reducing system sleep power consumption |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |