CN2750564Y - Energy-saving burning device for AC/DC switching power supply - Google Patents
Energy-saving burning device for AC/DC switching power supply Download PDFInfo
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- CN2750564Y CN2750564Y CN 200420046920 CN200420046920U CN2750564Y CN 2750564 Y CN2750564 Y CN 2750564Y CN 200420046920 CN200420046920 CN 200420046920 CN 200420046920 U CN200420046920 U CN 200420046920U CN 2750564 Y CN2750564 Y CN 2750564Y
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 238000004134 energy conservation Methods 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 9
- 238000002955 isolation Methods 0.000 claims description 4
- 230000004907 flux Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
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Abstract
The utility model relates to the technical field of an energy-saving electronic product, particularly an energy-saving burning machine for an AC/DC switching power supply. When the utility model satisfies the burning condition (that is, primary direct-current conversion voltage, each group of output load current, the temperature of burning machinery room, etc. of an AC/DC switching power supply of a burned machine) of the AC/DC switching power supply, a method of an electronic load is used. Part of electric energy supplied by the electronic load is converted to the part before the input of the AC/DC switching power supply of the burned machine, the electric energy can just supplied to the burned machine, thereby, the goal of saving electric energy is reached.
Description
Technical field:
The utility model relates to the energy-saving electric product technical field, the energy-conservation burn-in device of especially a kind of AC/DC Switching Power Supply.
Background technology:
AC/DC Switching Power Supply product must could be checked out the quality of the electric property of this AC/DC Switching Power Supply through strict burning machine test (claim ageing test again, generally carried out 8 hours) in process of production.All manufacture the manufacturer of AC/DC Switching Power Supply at present, all adopt pure resistance (cement resistor or wire resistor) to carry out the burning machine as fictitious load, a large amount of electric energy consumes in vain on (simulation) resistance in burning the machine process, make the production firm of AC/DC Switching Power Supply pay very big electricity charge spending for this reason, thereby also increased production cost of products greatly.
The AC/DC switch power source output voltage has single group and many groups form, and what have is positive voltage, and the positive voltage of then promptly exporting that has is also exported negative voltage; The scope of input voltage has three kinds of 100～130V, 200～240V, 100-240V, and frequency is 50～60Hz, and the scope of input voltage is generally 3～24VDC, and the scope of output current is generally 0.1～20A.The AC/DC Switching Power Supply configuration device that common typing output group number, wattage and output connect the plug-in unit model has: computer, printer, photocopier, facsimile machine, scanner, VCD machine, DVD player, the external storage products of computer or the like, its wattage output arrives between several hectowatts tens, because these equipment being in great demand on market, the AC/DC Switching Power Supply product of corresponding configuration will cause surprising power wastage as the words that adopt traditional burn-in device to carry out the test of burning machine, therefore, the energy-saving burn-in device of exploitation is very important.
Summary of the invention:
The purpose of this utility model provides a kind of energy-conservation burn-in device of AC/DC Switching Power Supply that can address the above problem with regard to being at the deficiencies in the prior art part.
The technical solution of the utility model is: it includes high-frequency filter circuit, low-frequency filter circuit, direct voltage combiner circuit, power frequency square-wave voltage translation circuit, DC/DC change-over circuit, organizes output voltage Switching Power Supply power supply circuits more.Wherein, the input of direct voltage combiner circuit is connected with the output of low frequency current rectifying and wave filtering circuit with the DC/DC change-over circuit, its output then is connected with the input of power frequency square-wave voltage translation circuit, the output of power frequency square-wave voltage translation circuit is connected with the input of the Switching Power Supply that quilt wears out, the input of DC/DC change-over circuit links to each other with the dc voltage output end of the Switching Power Supply that quilt wears out, simultaneously, the output of DC/DC change-over circuit links to each other through the input of diode with the direct voltage combiner circuit, and low-frequency filter circuit produces circuit with low-frequency square-wave respectively by many group output voltage Switching Power Supply power supply circuits and is connected with the DC/DC change-over circuit.
Improvement as above-mentioned technology; described power frequency square-wave voltage translation circuit serves as the control core with the widened pulse integrated circuit of model TL494; make it produce power frequency square-wave waveform and promote power MOS pipe and take turns conducting by conversion; produce power frequency square wave power voltage; burn machine AC/DC Switching Power Supply usefulness for quilt, and have the overload protection ability.
Described DC/DC change-over circuit is that the widened pulse integrated circuit of TL494 is the control core with the model, automatically adjust the widened pulse width, to satisfy the output load current size of being burnt machine AC/DC Switching Power Supply, electric flux is isolated being transformed on the direct voltage combiner circuit.Can be had 1 to organize at the most by the output of aging Switching Power Supply, correspondingly, the DC/DC change-over circuit that is attached thereto also has 1 to organize at the most.
After adopting technique scheme, the utility model satisfy the AC/DC Switching Power Supply burn the machine condition (refer to be burnt the elementary DC converting voltage of machine AC/DC Switching Power Supply, respectively organize output load current, burn the temperature of machine room etc.) under, adopt the electronic load mode, most of electric energy that electronic load is provided is transformed into the input forward part of being burnt machine AC/DC Switching Power Supply, electric energy is provided for again the burning machine, thereby can reduces the electric energy that is consumed in the burning machine process significantly.
Description of drawings:
Below in conjunction with accompanying drawing the utility model is further described:
Accompanying drawing 3 is circuit theory diagrams of the present utility model-organize voltage feed circuit more
Accompanying drawing 4 is circuit theory diagrams of the present utility model-AC/DC Switching Power Supply structure chart
Accompanying drawing 5 is circuit theory diagrams of the present utility model-DC/DC change-over circuit
Embodiment:
The following stated only is preferred embodiment of the present utility model, does not therefore limit protection range of the present utility model.
It includes high-frequency filter circuit, low-frequency filter circuit, the direct voltage combiner circuit, power frequency square-wave voltage translation circuit, the DC/DC change-over circuit, many group output voltage Switching Power Supply power supply circuits, wherein, the input of direct voltage combiner circuit is connected with the output of low frequency current rectifying and wave filtering circuit with the DC/DC change-over circuit, its output then is connected with the input of power frequency square-wave voltage translation circuit, the output of power frequency square-wave voltage translation circuit is connected with the input of the Switching Power Supply that quilt wears out, the input of DC/DC change-over circuit links to each other with the dc voltage output end of the Switching Power Supply that quilt wears out, simultaneously, the output of DC/DC change-over circuit links to each other through the input of diode with the direct voltage combiner circuit, and low-frequency filter circuit produces circuit with low-frequency square-wave respectively by many group output voltage Switching Power Supply power supply circuits and is connected with the DC/DC change-over circuit.
Described power frequency square-wave voltage translation circuit serves as the control core with the widened pulse integrated circuit of model TL494; make it produce power frequency square-wave waveform and promote power MOS pipe and take turns conducting by conversion; produce power frequency square wave power voltage; burn machine AC/DC Switching Power Supply usefulness for quilt, and have the overload protection ability.
Described DC/DC change-over circuit is that the widened pulse integrated circuit of TL494 is the control core with the model, automatically adjust the widened pulse width, to satisfy the output load current size of being burnt machine AC/DC Switching Power Supply, electric flux is transformed on the direct voltage combiner circuit by isolation.
Can be had 1 to organize at the most by the output of aging Switching Power Supply, correspondingly, the DC/DC change-over circuit that is attached thereto also has 1 to organize at the most.
See shown in the accompanying drawing 1-5: the block diagram of the energy-conservation burn-in device of the AC/DC Switching Power Supply in the present embodiment and circuit theory diagrams are to design for example with the energy-conservation burn-in device of general AC/DC Switching Power Supply that mates four groups of positive voltages of output, the also applicable certainly energy-conservation burning machines that are output as the AC/DC Switching Power Supply of single group, two groups or three groups output positive voltages.Be that 220V is that example describes circuit theory diagrams with the input line voltage now: the 220V line voltage is through F1, NTC, LF1, C3, C4, again through obtaining V behind BD1 rectification, the C6 low frequency filtering
EThe direct voltage of=310VDC, during bringing onto load, this V
EVoltage is low, is burnt every group of output voltage of machine AC/DC Switching Power Supply through the conversion of DC/DC change-over circuit after, by diode and receive the E point, need only V
A, V
B, V
C, V
DGreater than V
EThe direct voltage that the output of DC/DC change-over circuit is described has added load, and also explanation has been added load by the output of burning machine AC/DC Switching Power Supply, and this load current size is decided by the nominal of AC/DC Switching Power Supply, automatically adjust duty ratio by the DC/DC change-over circuit, can change V
A, V
B, V
C, V
DVoltage swing, promptly change V
A, V
B, V
C, V
DVoltage eat the degree of carrying, thereby reach and constant burning machine load current.Because the power that consumes when being burnt machine AC/DC Switching Power Supply full load is specified, according to law of conservation of energy, the electric energy energy of considerable part is provided by the DC/DC change-over circuit at the E point, therefore just minimizing relatively of the electric energy energy that obtains from electrical network (doing with regard to the load of burning machine with resistance) at tradition, finally reach the purpose of saving the electric energy energy, this is that the utility model burns the energy-conservation core place of machine.The concrete course of work is as follows:
(1) referring to accompanying drawing 2.The direct voltage combiner circuit is made up of BD1, D1-D4.The square-wave voltage translation circuit is made up of R2-R18, C7-C12, Q1-Q6, D5-D8, U1.U1 is a TL494 widened pulse integrated circuit, 8 pin, 11 pin by U1 are exported positive and negative reversed polarity switching waveform, after treatment, promote power MOS pipe Q1, Q5 and Q2, Q4 respectively and take turns conducting, obtain the ac square-wave voltage of Vout=310V from L ' and N ' terminal, with as the input voltage that is burnt machine AC/DC Switching Power Supply.The frequency of switching waveform is 50-60Hz, and frequency is by 13 and C9 parameter decision.C11 and R17 constitute lattice network, and the grid bias circuit by D5, D6, R2, R3, Q1, C7 form power MOS pipe Q1 guarantees to have 14V
P-PLeft and right sides peak value switching signal; In like manner, the grid bias circuit of forming power MOS pipe Q4 by D7, D8, R5, R6, Q6, C8.Form over-current detection circuit by R9-R11, C12; constituting voltage divider by R16, R18 provides reference voltage for 15 pin of U1; over-current detection voltage joins 16 pin of U1; C12 plays the overcurrent protection time-lag action, prevents to be burnt machine AC/DC Switching Power Supply and connects the surge current of moment generation and the over-current protection malfunction work takes place.
(2) referring to accompanying drawing 3.This figure is that common inverse-excitation type is organized the output voltage switching power circuit more, elementary DC converting voltage V
EReceive on the accompanying drawing 2.+ 14VDC supplies with the U1 integrated circuit work of accompanying drawing 2, primary part U3 and periphery electricity that+13VDC supplies with the DC/DC translation circuit become road work, U2 is the single-ended widened pulse integrated circuit of UC3842, because+12VDC ,+13VDC ,+load that 14VDC connected is very light, therefore relatively stable, satisfy the requirement of institute's connecting circuit work fully.
(3) referring to accompanying drawing 4.In the frame of broken lines of accompanying drawing 4-is by the structure chart of the common AC/DC Switching Power Supply of burning machine, obtains V after electrical network 220V sine voltage is through BD2 rectification, C31 filtering
FH=310VDC direct voltage, and the 310V square-wave voltage obtains V after passing through BD2 rectification, C31 filtering too
FHDirect voltage about=310VDC; Because it is very wide to be burnt the input voltage range of machine AC/DC Switching Power Supply, the scope of the direct voltage that obtains behind the process rectifying and wave-filtering is also very wide, the elementary low frequency current rectifying and wave filtering circuit of identical AC/DC Switching Power Supply is the same basically by the direct voltage that obtains behind 220V sine voltage and the 310V square-wave voltage (maximum duty cycle) respectively, the electrical characteristic of output too, as giving computer, UPS uninterrupted power supply provider wave voltage works, therefore, can illustrate with square-wave voltage and sine voltage and provide burning machine effect to be equal to.The utility model energy saver burns machine with square-wave voltage just, and purpose is to be convenient to that line voltage is handled the back and DC/DC conversion direct voltage is synthetic, makes consequently that energy-conservation burn-in device reaches that volume is little, in light weight, efficient is high, isolation, safety.
(4) referring to accompanying drawing 5.Accompanying drawing 5 is the DC/DC translation circuit, to be burnt machine AC/DC Switching Power Supply respectively organize output voltage+Vout1 ,+Vout2 ,+Vout3 ,+Vout4 is connected to the T2 primary center plug of corresponding DC/DC translation circuit, provide positive and negative reversed polarity switching signal by U3 (TL494 widened pulse integrated circuit), frequency is tens of KHz, promote power MOS pipe Q10, Q13 through R37, R41, Q8, Q9, Q11, Q12 and take turns conducting, obtain the high-voltage dc voltage that lies prostrate 310 more behind high frequency transformer T2 secondary voltage process, D14, D15, L4, C35, the C37 rectifying and wave-filtering; Through diode D1 and by the E point to accompanying drawing 2, the electric current by R49 increases gradually, and ammeter A1 indicated value also increases gradually, adjusts VR1 value, can change duty ratio, thus change V
ASize also promptly changes the size of A1, and R49 is a current sampling resistor, and sampling voltage through U4-A (LM358) error amplifier relatively adjust duty ratio automatically by optocoupler U5 and U3, thereby the load current of assurance+Vout1 is constant.Obtain the overvoltage sampling voltage from overvoltage sample resistance R42, R44 and realize overvoltage protection control through optocoupler U5 and U3; U6 is TL431; provide reference voltage to U4-B; T2 realizes voltage transformation and high pressure isolation, and optocoupler U5 realizes overvoltage, and constant current control and high pressure are isolated; during to energy-conservation burning machine operation; the people touches to be burnt the inferior extreme of machine AC/DC Switching Power Supply, and it is dangerous not have electric shock, uses safer.In like manner ,+Vout2 ,+Vout3 ,+the Vout4 course of work is the same fully, but the ground end of the operating voltage of corresponding DC/DC translation circuit need be done rationally separately to get final product.
Claims (4)
1, the energy-conservation burn-in device of AC/DC Switching Power Supply, it is characterized in that: it includes high-frequency filter circuit, low-frequency filter circuit, the direct voltage combiner circuit, power frequency square-wave voltage translation circuit, the DC/DC change-over circuit, many group output voltage Switching Power Supply power supply circuits, wherein, the input of direct voltage combiner circuit is connected with the output of low frequency current rectifying and wave filtering circuit with the DC/DC change-over circuit, its output then is connected with the input of power frequency square-wave voltage translation circuit, the output of power frequency square-wave voltage translation circuit is connected with the input of the Switching Power Supply that quilt wears out, the input of DC/DC change-over circuit links to each other with the dc voltage output end of the Switching Power Supply that quilt wears out, simultaneously, the output of DC/DC change-over circuit links to each other through the input of diode with the direct voltage combiner circuit, and low-frequency filter circuit produces circuit with low-frequency square-wave respectively by many group output voltage Switching Power Supply power supply circuits and is connected with the DC/DC change-over circuit.
2, the energy-conservation burn-in device of AC/DC Switching Power Supply according to claim 1; it is characterized in that: described power frequency square-wave voltage translation circuit serves as the control core with the widened pulse integrated circuit of model TL494; make it produce power frequency square-wave waveform and promote power MOS pipe and take turns conducting by conversion; produce power frequency square wave power voltage; burn machine AC/DC Switching Power Supply usefulness for quilt, and have the overload protection ability.
3, the energy-conservation burn-in device of AC/DC Switching Power Supply according to claim 1, it is characterized in that: described DC/DC change-over circuit is that the widened pulse integrated circuit of TL494 is the control core with the model, automatically adjust the widened pulse width, to satisfy the output load current size of being burnt machine AC/DC Switching Power Supply, electric flux is transformed on the direct voltage combiner circuit by isolation.
4, the energy-conservation burn-in device of AC/DC Switching Power Supply according to claim 1 is characterized in that: the output of the Switching Power Supply that is worn out can have 1 to organize at the most, and correspondingly, the DC/DC change-over circuit that is attached thereto also has 1 to organize at the most.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420046920 CN2750564Y (en) | 2004-06-15 | 2004-06-15 | Energy-saving burning device for AC/DC switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420046920 CN2750564Y (en) | 2004-06-15 | 2004-06-15 | Energy-saving burning device for AC/DC switching power supply |
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| Publication Number | Publication Date |
|---|---|
| CN2750564Y true CN2750564Y (en) | 2006-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420046920 Expired - Fee Related CN2750564Y (en) | 2004-06-15 | 2004-06-15 | Energy-saving burning device for AC/DC switching power supply |
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| CN (1) | CN2750564Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101290335B (en) * | 2008-06-11 | 2011-02-09 | 德州三和电器有限公司 | Direct-current input power supplying converter energy-saving aging device |
| CN101620259B (en) * | 2009-08-07 | 2011-09-07 | 东莞市冠佳电子设备有限公司 | Method and system for power supply aging |
| CN104345285A (en) * | 2014-11-04 | 2015-02-11 | 大连理工常熟研究院有限公司 | Energy-saving power adapter ageing testing device |
| WO2017211048A1 (en) * | 2016-06-07 | 2017-12-14 | 东莞市冠佳电子设备有限公司 | Aging test circuit of switch power source |
-
2004
- 2004-06-15 CN CN 200420046920 patent/CN2750564Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101290335B (en) * | 2008-06-11 | 2011-02-09 | 德州三和电器有限公司 | Direct-current input power supplying converter energy-saving aging device |
| CN101620259B (en) * | 2009-08-07 | 2011-09-07 | 东莞市冠佳电子设备有限公司 | Method and system for power supply aging |
| CN104345285A (en) * | 2014-11-04 | 2015-02-11 | 大连理工常熟研究院有限公司 | Energy-saving power adapter ageing testing device |
| CN104345285B (en) * | 2014-11-04 | 2017-10-10 | 大连理工常熟研究院有限公司 | A kind of power supply changeover device ageing tester of energy-conservation |
| WO2017211048A1 (en) * | 2016-06-07 | 2017-12-14 | 东莞市冠佳电子设备有限公司 | Aging test circuit of switch power source |
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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: LI CHUIMENG Free format text: FORMER OWNER: PAN YONGYANG Effective date: 20080118 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080118 Address after: Guangdong province Dongguan city Tangxia town Lin Yuan 8 Building 405 coconut garden Goodview, zip code: 523710 Patentee after: Li Chuimeng Address before: No. 23, building 2308, posts and telecommunications building, thirteen District, Guangdong, Shenzhen, Baoan: 518101 Patentee before: Pan Yongyang |
|
| ASS | Succession or assignment of patent right |
Owner name: DONGGUAN GUANJIA ELECTRONICS EQUIPMENT CO., LTD. Free format text: FORMER OWNER: LI CHUIMENG Effective date: 20091218 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091218 Address after: Guangdong province Hongye two South Road, Dongguan city Tangxia town Hongye Industrial Zone No. 1, zip code: 523710 Patentee after: Dongguan Guanjia Electronic Equipment Co., Ltd. Address before: Guangdong province Dongguan city Tangxia town Lin Yuan 8 Building 405 coconut garden Goodview, zip code: 523710 Patentee before: Li Chuimeng |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060104 Termination date: 20120615 |