CN105807880A - Host power supply and electronic device - Google Patents
Host power supply and electronic device Download PDFInfo
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- CN105807880A CN105807880A CN201410839185.5A CN201410839185A CN105807880A CN 105807880 A CN105807880 A CN 105807880A CN 201410839185 A CN201410839185 A CN 201410839185A CN 105807880 A CN105807880 A CN 105807880A
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- power supply
- module
- supply circuit
- host
- display
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Abstract
Embodiments of the invention disclose a host power supply and an electronic device, relate to the technical field of electronic devices, and solve the problem of relatively high design costs of inhibition schemes for electromagnetic interference generated by a display power supply of the electronic device when the electromagnetic interference generated during normal working of the electronic device is reduced for enabling the electronic device to meet low-radiation design requirements in the prior art. The host power supply comprises a metal housing as well as a transformer apparatus and a power supply circuit which are arranged in the metal housing, wherein the transformer apparatus is connected with the power supply circuit; and the power supply circuit comprises a display power supply circuit, so that the host power supply provides power for a display through the display power supply circuit. According to the embodiments of the invention, the host power supply of a desktop computer can directly provide the power for the display.
Description
Technical field
The present invention relates to technical field of electronic equipment, particularly relate to a kind of host power supply and include the electronic equipment of described host power supply.
Background technology
In prior art, the display of computer and main frame are all adopt each independent power supply to be powered, wherein the power circuit of display is divided into on-off circuit and DC/DC changer two parts, Switching Power Supply is for being converted to DC voltage by the mains of 220V, and DC/DC changer for converting the DC voltage driven needed for plate and display floater to by the DC voltage that Switching Power Supply produces.
But, along with the electromagnetic compatibility problem of computer increasingly comes into one's own, and the power supply of computer display inherently produces the main source of electromagnetic interference EMI, in order to suppress the electromagnetic interference caused by display power supply, existing settling mode has increases EMI power-supply filter, the Low emissivity requirement that redesigns the wiring etc. of monitor power supply circuit to meet computer.
In the process realizing the present invention, inventor have found that prior art at least exists following technical problem:
Existing settling mode needs increase extra electromagnetic interface filter or redesign layout and the structure of monitor power supply circuit, thus adding the design cost of low radiation computer.
Summary of the invention
The present invention provides a kind of host power supply and includes the electronic equipment of described host power supply, and it can under meeting the premise of designing requirement of Low emissivity electronic equipment, the design cost that balance Low emissivity designing requirement brings better.
On the one hand, the present invention provides a kind of host power supply, including metal shell and be arranged at the potential device within described metal shell and power supply circuits, described potential device is connected with described power supply circuits, described power supply circuits include monitor power supply circuit so that described host power supply is that display is powered by described monitor power supply circuit.
Alternatively, described monitor power supply circuit includes electromagnetic interference EMI suppression module.
Further, described electromagnetic interference EMI suppression module includes secondary commutation filtration module and the DC terminal DC filtration module being connected with described secondary commutation filtration module.
Further, the limited power LPS that the primary pulse width modulated PWM module that described monitor power supply circuit also includes being connected with the described secondary commutation filtration module in described electromagnetic interference EMI suppression module is connected with described primary pulse width modulated PWM module protects module, secondary feedback back coupling module and secondary overvoltage protection OVP module.
On the other hand, the present invention provides a kind of electronic equipment including above-mentioned host power supply.
Host power supply provided by the invention and the electronic equipment including described host power supply, described host power supply includes metal shell and is arranged at the potential device within described metal shell and power supply circuits, described potential device is connected with described power supply circuits, described power supply circuits include monitor power supply circuit so that described host power supply is that display is powered by described monitor power supply circuit.Compared with prior art, it is by utilizing host power supply to be powered for display, save the power supply adaptor directly for monitor power supply, and the Low emissivity designing requirement of supply unit can be met, as can be seen here, host power supply provided by the invention can under the designing requirement premise meeting Low emissivity electronic equipment, balanced design cost better.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in the embodiment of the present invention, below the accompanying drawing used required during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of host power supply one embodiment of the present invention；
Fig. 2 is the structural representation of monitor power supply circuit in Fig. 1 of the present invention；
Fig. 3 is the circuit diagram of EMI suppression module in Fig. 2 of the present invention；
Fig. 4 is the structural representation of electronic equipment one embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, all other embodiments that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
The embodiment of the present invention provides a kind of host power supply, as shown in Figure 1, described host power supply 1 includes metal shell 10 and is arranged at the potential device 11 within described metal shell 10 and power supply circuits 12, described potential device 11 is connected with described power supply circuits 12, described power supply circuits 12 include monitor power supply circuit 20 so that described host power supply 1 is powered for display by described monitor power supply circuit 20.
The host power supply that the embodiment of the present invention provides, described host power supply includes metal shell and is arranged at the potential device within described metal shell and power supply circuits, described potential device is connected with described power supply circuits, described power supply circuits include monitor power supply circuit so that described host power supply is that display is powered by described monitor power supply circuit.Visible, the host power supply that the embodiment of the present invention provides is by increasing monitor power supply circuit in the power supply circuits of described host power supply so that described host power supply is directly powered for display by described monitor power supply circuit.Compared with prior art, it is by utilizing host power supply to be powered for display, save the power supply adaptor directly for monitor power supply, and the Low emissivity designing requirement of supply unit can be met, namely host power supply provided by the invention can under the designing requirement premise meeting Low emissivity electronic equipment, balanced design cost better.
As in figure 2 it is shown, be the structural representation of monitor power supply circuit 20 in Fig. 1, described monitor power supply circuit 20 includes electromagnetic interference EMI suppression module 21, the electromagnetic interference produced during for suppressing described monitor power supply circuit to work.
Wherein, described electromagnetic interference EMI suppression module 21 includes:
Secondary commutation filtration module 211, the electromagnetic interference produced during for filtering the work of described monitor power supply circuit；
DC terminal filtration module 212, described DC terminal filtration module 212 is connected with described secondary commutation filtration module 211, is used for the electromagnetic interference of the common mode suppressing the DC terminal of described monitor power supply circuit to produce.
Further, described monitor power supply circuit 20 also includes:
Primary pulse width modulated PWM module 22, described primary pulse width modulated PWM module 22 is connected with the described secondary commutation filtration module 211 in described electromagnetic interference EMI suppression module 20, for the output voltage of described potential device is carried out pulse width modulation and control thereof；
Limited power LPS protects module 23; described limited power LPS protects module 23 to be connected with described primary pulse width modulated PWM module 22; it is not less than minimum, to protect the load of described monitor power supply circuit 20 for limiting the DC voltage of output under described monitor power supply circuit 20 normal operation or failure condition；
Secondary feedback back coupling module 24, controls for secondary voltage carries out feedback back coupling；
Secondary overvoltage protection OVP module 25, for carrying out overvoltage protection to described monitor power supply circuit.
The monitor power supply circuit that the embodiment of the present invention provides, it need not remodify the original power circuit part of described display, have only to the outfan at the original power circuit of described display and increase the EMI suppression module being made up of the secondary commutation filtration module being sequentially connected with and DC terminal filtration module, the differential mode produced when just can effectively filter out the work of described monitor power supply circuit and the electromagnetic interference of common mode, so that the host power supply of design disclosure satisfy that design specification and the requirement of Low emissivity, and the design cost that need not cost a lot of money extraly just can so that described display circuit can meet correspondingly EMI code requirement.
As it is shown on figure 3, be the circuit diagram of EMI suppression module in Fig. 2, described EMI suppression module 31 includes secondary commutation filtration module 311 and DC terminal filtration module 312.
Specifically, the diode rectifier D905 in described secondary commutation filtration module 311 is used for secondary voltage is carried out rectification, to obtain the DC voltage of the 19V required for described display normal operation；C913, C914 of described secondary commutation filtration module 311 is differential mode capacitor, the differential mode interference produced when being used for filtering the work of described monitor power supply circuit, the differential mode inductance of the differential mode interference that LF901 produces when being for filtering the work of described monitor power supply circuit, visible, described differential mode capacitor C913, C914 and common mode inductance LF901 together form one can the filter circuit of electromagnetic interference of robust mould, the electromagnetic interference of the differential mode produced during to filter the work of described monitor power supply circuit.
Described DC terminal filtration module 312 is made up of a common mode capacitance LF902, is used for filtering the electromagnetic interference of the common mode of the DC terminal generation of described monitor power supply circuit such that it is able to suppress the electromagnetic interference of common mode to be launched by display power supply alignment external radiation.
The EMI suppression module that the embodiment of the present invention provides, it need not remodify the original power circuit part of described display, have only to the output at power supply and partly increase the electromagnetic interference EMI filtration module being made up of differential mode capacitor, differential mode inductance and common mode inductance, just produced differential mode and common mode electromagnetic interference EMI during the work of described monitor power supply circuit can be effective filtered out, to meet the Low emissivity requirement of supply unit, and the design cost that need not cost a lot of money.
As shown in Figure 4, the embodiment of the present invention provides a kind of electronic equipment, and described electronic equipment is desk computer, and it includes main frame 40, display 50 and for connecting the power line 60 of described main frame and display.
Wherein, the internally installed host power supply 41 having the embodiment of the present invention of described main frame 40, described host power supply 41 includes being arranged at the potential device 42 within described host power supply 41 and power supply circuits 43, described potential device 42 and power supply circuits 43 connect, described power supply circuits are provided with monitor power supply circuit 431, the main frame 40 making described desk computer connects described display 50 by described power line 60, so that described host power supply 41 is powered for display 50 by described monitor power supply circuit 431.
It addition, the electronic equipment of the present invention can be desk computer, but it is not limited only to this.
The electronic equipment that the embodiment of the present invention provides, the main frame of described electronic equipment is that display is made directly power supply by host power supply.Compared with prior art, described desk computer is monitor power supply by its main frame, and saving is directly the power supply adaptor of monitor power supply on the one hand；On the other hand the Low emissivity of described host power supply is designed to meet EMI standards and norms, thus anti-tampering signal is coupled on power line to cause the leakage of electromagnetic information effectively.As can be seen here, described electronic equipment can under meeting the premise of designing requirement of Low emissivity electronic equipment, balanced design cost better.
In order to more specifically emphasize the independence implemented, this specification relates to number of modules or unit.For example, module or unit can be realized by hardware circuit, and this hardware circuit includes special VLSI circuit or gate array, such as logic chip, field-effect transistor, or other assembly.Module or unit also can realize in programmable hard ware, such as field effect programmable gate array, programmable logic array, programmable logic device etc..
Module or unit also can realize in by the software performed by various forms of processors.Such as, a functional module can include one or more entity or logic computer instruction block, and this block is formed into, such as, object, program or function.But, the performed part of functional module or unit need not physically put together, but can be made up of the different instruction being stored in diverse location, when combining in logic, forms module or unit and reaches the purpose required by this module or unit.
" embodiment " mentioned by this specification or similar term represent the characteristic relevant with embodiment, structure or feature, including at least one embodiment of the present invention.Therefore, this specification occurs term " in one embodiment ", " in an embodiment " and similar term are likely to but are not necessarily all the identical embodiment of sensing.
The above; being only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; the change that can readily occur in or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with scope of the claims.
Claims (5)
1. a host power supply, including metal shell and be arranged at the potential device within described metal shell and power supply circuits, described potential device is connected with described power supply circuits, it is characterized in that, described power supply circuits include monitor power supply circuit so that described host power supply is that display is powered by described monitor power supply circuit.
2. host power supply according to claim 1, it is characterised in that described monitor power supply circuit includes electromagnetic interference EMI suppression module.
3. host power supply according to claim 2, it is characterised in that described electromagnetic interference EMI suppression module includes secondary commutation filtration module and the DC terminal DC filtration module being connected with described secondary commutation filtration module.
4. host power supply according to claim 3; it is characterized in that, the limited power LPS that the primary pulse width modulated PWM module that described monitor power supply circuit also includes being connected with the described secondary commutation filtration module in described electromagnetic interference EMI suppression module is connected with described primary pulse width modulated PWM module protects module, secondary feedback back coupling module and secondary overvoltage protection OVP module.
5. an electronic equipment, it is characterised in that described electronic equipment includes the host power supply as according to any one of claim 1 ~ 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410839185.5A CN105807880A (en) | 2014-12-30 | 2014-12-30 | Host power supply and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410839185.5A CN105807880A (en) | 2014-12-30 | 2014-12-30 | Host power supply and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105807880A true CN105807880A (en) | 2016-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410839185.5A Pending CN105807880A (en) | 2014-12-30 | 2014-12-30 | Host power supply and electronic device |
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| Country | Link |
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| CN (1) | CN105807880A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317651A (en) * | 2017-06-06 | 2017-11-03 | 李瑞峰 | What a kind of computerized information was revealed prevents device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080285315A1 (en) * | 2007-05-15 | 2008-11-20 | Samsung Electronics Co., Ltd. | Power supply apparatus and electronic device having the power supply apparatus |
| CN201590032U (en) * | 2009-09-29 | 2010-09-22 | 上海北大方正科技电脑系统有限公司 | Desktop LCD power supply system |
| CN201723424U (en) * | 2010-03-16 | 2011-01-26 | 杭州金兰达科技有限公司 | Dedicated power-saving device for air compressor |
| CN201886409U (en) * | 2010-10-29 | 2011-06-29 | 中国长城计算机深圳股份有限公司 | Computer and power supply circuit thereof |
-
2014
- 2014-12-30 CN CN201410839185.5A patent/CN105807880A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080285315A1 (en) * | 2007-05-15 | 2008-11-20 | Samsung Electronics Co., Ltd. | Power supply apparatus and electronic device having the power supply apparatus |
| CN201590032U (en) * | 2009-09-29 | 2010-09-22 | 上海北大方正科技电脑系统有限公司 | Desktop LCD power supply system |
| CN201723424U (en) * | 2010-03-16 | 2011-01-26 | 杭州金兰达科技有限公司 | Dedicated power-saving device for air compressor |
| CN201886409U (en) * | 2010-10-29 | 2011-06-29 | 中国长城计算机深圳股份有限公司 | Computer and power supply circuit thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317651A (en) * | 2017-06-06 | 2017-11-03 | 李瑞峰 | What a kind of computerized information was revealed prevents device and method |
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Application publication date: 20160727 |
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