CN1034041C - A switching power saving device - Google Patents
A switching power saving device Download PDFInfo
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- CN1034041C CN1034041C CN94100844A CN94100844A CN1034041C CN 1034041 C CN1034041 C CN 1034041C CN 94100844 A CN94100844 A CN 94100844A CN 94100844 A CN94100844 A CN 94100844A CN 1034041 C CN1034041 C CN 1034041C
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- output
- type power
- exchange type
- pulse width
- width modulator
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Abstract
一种交换式电源省电装置，主要系由一切换电路、一回授转换电路及一变频电路所组成，于负载降低时，藉切换电路截止电源的全载输出点，并以回授电路改变其回授参考点而获得较佳的稳定效果，且以变频电路改变线路工作频率，以减少零件交换损失的省电装置。
A switching power supply energy saving device is mainly composed of a switching circuit, a feedback conversion circuit and a frequency conversion circuit. When the load is reduced, the switching circuit cuts off the full-load output point of the power supply, and the feedback circuit changes its feedback reference point to obtain a better stability effect. The frequency conversion circuit changes the line operating frequency to reduce the power saving device of the parts exchange loss.
Description
The relevant a kind of exchange type power saver of the present invention when You Zhineng reduces in load, is pressed output point by full live, and can be normal and the electricity saver of operating stably.
Because scientific and technological making rapid progress, various electrified products are constantly weeded out the old and bring forth the new, and cause a large amount of consumption of the energy, more because the recent various automation trend of promoting day by day make people be difficult to break away from the demand that power supply is supplied in daily life.But present commercially available general switched power supplier can't suitably reduce power output, and form the waste of the energy when the situation of load output in non-complete year.
Therefore, main purpose of the present invention promptly is to provide a kind of exchange type power saver, base system is in traditional exchange type power device, be provided with one and switch circuit, when load reduces, the output of barrier portion voltage, consumed power is reduced to below the 5W, and, keep the voltage regulation result of output voltage, and reach the function of power saving via feedbacking the change of putting.
Another object of the present invention when being that the part output voltage ends, reduces the line work frequency; Relevant part exchange number of times is reduced, to reduce the exchange loss of part, can more increase the effect of power saving.
A kind of exchange type power saver, described exchange type power have the voltage output winding of pulse width modulator and many group serial connections, it is characterized in that described exchange type power saver comprises:
The power supply output switching circuit is serially connected between the voltage output winding of described many group serial connections, and the output of the voltage output winding that is serially connected in is thereafter cut off in the triggering of the load control signal when it is subjected to non-complete year;
Back coupling reference point translation circuit links to each other with described pulse width modulator, and the control of the load control signal when it is subjected to non-complete year changes the back coupling reference point;
Frequency-conversion circuit links to each other with described pulse width modulator, when load lightens, changes electric voltage frequency.
Main feature of the present invention and novelty thereof cooperate following appended drawings and Examples to describe in detail when can more becoming clear now.As shown in the figure:
Fig. 1 is a block diagram of implementing the part circuit form of switched power supplier of the present invention.
Fig. 2 is a circuit diagram of the present invention.
See also Fig. 1, the traditional transform type power supply circuit among Fig. 1 has voltage output V1, V2, the V3 of pulse width modulator PWM and many group serial connections ... Vn.The present invention is in traditional switched power supplier circuit, is provided with power supply output switching circuit 1, back coupling change-over circuit 2 and frequency-conversion circuit 3.Stripping and slicing circuit 1 is serially connected in voltage output V1, V2, the V3 of many group serial connections ... between the Vn, be serially connected in this example between voltage output V1 and the V2, feedback reference point conversion electricity and 2 linked to each other with pulse width modulator PWM, frequency-conversion circuit 3 also is connected on the pulse width modulator PWM.When the power supply of output is complete carrying, this power supply can very stable work, but when being non-complete year when the load reduction, the voltage V2-VN of commutation circuit 1 order output ends, and forms the power down mode that has only V1 output, power consumption is reduced to below the 5W, the control signal of load changes with feedbacking the back coupling reference point of change-over circuit 2 season, keeping the stablizing effect of V1 voltage, and when load lightens, frequency changer circuit 3 changes electric voltage frequency automatically, to increase the effect of power saving.
See also Fig. 2, commutation circuit 1 of the present invention is to trigger an amplifier transistor Q809 by control signal, and driving is connected to the relay R L802 on the amplifier transistor Q809 output, the output voltage V 2-VN that is connected on this relay R L802 contact is formed to open circuit, and the consumed power of reduction load, this control signal also triggers Q806 simultaneously, Q807, Q808, and Q804, the back coupling change-over circuit 2 that Q805 etc. form, and the back coupling reference point is changed, and keep the good voltage regulation result of V1 voltage, when aforesaid load reduces, the pulse bandwidth of pulse width modulator IC802 output narrows down, make Q801 relatively, capacitance integral voltage in the frequency changer circuit that the Q811 transistor is formed reduces, and the action of triggering frequency conversion, this moment, Q801 moved according to the pulse wave of pulse width modulator IC802 output, when pulse wave is high potential, the Q1 admittance, and when pulse wave is electronegative potential, Q1 ends, and adjust the output pulse bandwidth of this pulse width modulator IC802 via the back coupling mode, make the supply voltage of load output reach good voltage regulation result.
In sum, the present invention makes traditional switched power supplier reach good and stable power saving effect with minimum circuit component and minimum cost, is the design of a practicality, also has simultaneously a novelty, and the whence proposes patent application in accordance with the law.
Claims (3)
1. exchange type power saver, described exchange type power have the voltages output windings of pulse width modulator and many group serial connections, it is characterized in that described exchange type power saver comprises:
The power supply output switching circuit is serially connected between the voltage output winding of described many group serial connections, and the output of the voltage output winding that is serially connected in is thereafter cut off in the triggering of the load control signal when it is subjected to non-complete year;
Back coupling reference point translation circuit links to each other with described pulse width modulator, and the control of the load control signal when it is subjected to non-complete year changes the back coupling reference point;
Frequency-conversion circuit links to each other with described pulse width modulator, when load lightens, changes electric voltage frequency.
2. exchange type power saver as claimed in claim 1, it is characterized in that, described commutation circuit comprises an amplifier transistor and the relay that is connected on the described amplifier transistor output, and described transistorized trigger end is connected on the described load control signal.
3. exchange type power saver as claimed in claim 1 is characterized in that described frequency-conversion circuit comprises two transistor, when output loading reduces, changes the pulse bandwidth of the described pulse width modulator output that is attached thereto.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94100844A CN1034041C (en) | 1994-01-14 | 1994-01-14 | A switching power saving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94100844A CN1034041C (en) | 1994-01-14 | 1994-01-14 | A switching power saving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1105487A CN1105487A (en) | 1995-07-19 |
| CN1034041C true CN1034041C (en) | 1997-02-12 |
Family
ID=5029873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94100844A Expired - Fee Related CN1034041C (en) | 1994-01-14 | 1994-01-14 | A switching power saving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1034041C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101604904B (en) * | 2008-06-11 | 2011-07-13 | 康舒科技股份有限公司 | Switching Mode Power Supply Improves Light Load Efficiency |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4794270A (en) * | 1986-06-20 | 1988-12-27 | Gold Star Co., Ltd. | Stabilizing circuit for switching mode power supply circuit |
-
1994
- 1994-01-14 CN CN94100844A patent/CN1034041C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4794270A (en) * | 1986-06-20 | 1988-12-27 | Gold Star Co., Ltd. | Stabilizing circuit for switching mode power supply circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1105487A (en) | 1995-07-19 |
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| C14 | Grant of patent or utility model | ||
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| 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 |