CN203014664U - Computer power supply - Google Patents
Computer power supply Download PDFInfo
- Publication number
- CN203014664U CN203014664U CN 201220596280 CN201220596280U CN203014664U CN 203014664 U CN203014664 U CN 203014664U CN 201220596280 CN201220596280 CN 201220596280 CN 201220596280 U CN201220596280 U CN 201220596280U CN 203014664 U CN203014664 U CN 203014664U
- Authority
- CN
- China
- Prior art keywords
- resistance
- amplifier
- electrically connected
- output
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Amplifiers (AREA)
Abstract
The utility model relates to a computer power supply, which comprises an electromagnetic compatible filter, an input rectifying and filtering device, a high-frequency switch power conversion module, a multiplexed output rectifying and filtering device, an auxiliary power supply module, a pulse width modulation controller and an auxiliary circuit. The computer power supply is characterized by further comprising a simulated chaotic signal generator and a simulated chaotic signal processing module, wherein the simulated chaotic signal processing module receives, processes and outputs an output signal of the simulated chaotic signal generator. The pulse width modulation controller simultaneously receives output signals of the auxiliary power supply module, the auxiliary circuit and the simulated chaotic signal processing module and processes and outputs the output signals to the high-frequency switch power conversion module. The computer power supply has the advantages of being capable of improving the electromagnetic compatibility of a switch power supply, reducing peak of harmonic component and accordingly decreasing conducted interference mainly by reducing amplitude of a harmonic signal of switching frequency passing through a chaotization system.
Description
Technical field
The utility model and a kind of computer power supply.
Background technology
At present, the computer power supply that uses is more complicated Switching Power Supply, itself be typical switch non linear system, the switch working state of its power switch pipe will cause the moment transition of electric current in power inverter, voltage, the electromagnetic interference that produce power is high.Engineers and technicians adopt filter and shielding mode to reduce electromagnetic interference usually, but these methods all have self-defect, mainly depend on engineering experience in design.Along with renewal and the raising of the electromagnetic compatibility standard of the world, traditional inhibition electromagnetic interference method can not satisfy electromagnetic compatibility ground requirement well, needs to seek new thinking and method.Because chaotic signal has pseudo-randomness, ergodic, has wide smooth spectrum distribution.Chaotic signal is used for the pwm signal of modulating switch power source in theory; can effectively suppress electromagnetic interference; and verify by emulation or laboratory model machine; but the practical application on industrial products is more rare; because the power of computer power supply is usually more than 200W; power inverter is usually operated at the half-bridge topology mode; pulse-width modulation circuit is controlled the conducting in turn (switching frequency is usually more than 30KHz) of two power switch pipes, makes so corresponding control circuit and protective circuit more complicated.
Summary of the invention
The purpose of this utility model is overcome the deficiencies in the prior art and a kind of Electro Magnetic Compatibility that can improve Switching Power Supply is provided, main path is the amplitude by the harmonic signal of the switching frequency that exists in reduction system after chaotization system, cut down the spike of harmonic component, thus the computer power supply that conducted interference is reduced.
In order to achieve the above object, the utility model is to realize like this, it is a kind of computer power supply, comprises electromagnetic compatibility filter, input rectifying and filter, HF switch power conversion module, multichannel output rectification and filter, accessory power supply module, PDM keyer and auxiliary circuit; Wherein said electromagnetic compatibility filter receives the 220V AC signal and processes rear output; Described input rectifying and filter receive the output signal of electromagnetic compatibility filter and carry out being defeated by HF switch power conversion module after signal is processed, described multichannel output rectification receive the output signal of HF switch power conversion module with filter and process after realize multichannel output, described auxiliary circuit receives the output signal of the whole and filter of multichannel output and processes rear output; Characterized by further comprising simulation chaos signal generator and simulation chaotic Signals Processing module, described simulation chaotic Signals Processing module receives the output signal of simulation chaos signal generator and also processes rear output, described PDM keyer receive simultaneously the output signal of accessory power supply module, auxiliary circuit and simulation chaotic Signals Processing module and process after export to HF switch power conversion module.
Described simulation chaos signal generator comprises first to fourth amplifier, the first to the tenth resistance, resistance and the first to the 3rd electric capacity; One end of wherein said the 4th resistance is electrically connected to respectively the positive input of the first amplifier, the positive input of the second amplifier, an end of the second electric capacity and an end of resistance, and the other end of the 4th resistance is electrically connected to respectively the output of the first amplifier and an end of the 3rd resistance; The other end of described the 3rd resistance is electrically connected to respectively the reverse input end of the first amplifier and an end of the second resistance; The other end of described the second resistance is electrically connected to respectively the output of the second amplifier and an end of the 3rd electric capacity; The other end of described the 3rd electric capacity is electrically connected to respectively the reverse input end of the second amplifier and an end of the first resistance; The other end ground connection of described the first resistance; The other end of described resistance is electrically connected to respectively an end of the first electric capacity, an end of the tenth resistance, an end of the 8th resistance, the positive input of the 3rd amplifier and the positive input of the 4th amplifier; The other end ground connection of described the second electric capacity and the first electric capacity; The other end of described the tenth resistance is electrically connected to respectively the output of the 3rd amplifier and an end of the 9th resistance; The other end of described the 9th resistance is electrically connected to respectively the reverse input end of the 3rd amplifier and an end of the 5th resistance; The other end of described the 8th resistance is electrically connected to respectively the output of the 4th amplifier and an end of the 7th resistance; The other end of described the 7th resistance is electrically connected to respectively the reverse input end of the 4th amplifier and an end of the 6th resistance, the other end ground connection of described the 5th resistance and the 6th resistance; Described simulation chaotic Signals Processing module comprises the 5th amplifier, adjustable resistance and the 11 to the 14 resistance; One end of wherein said adjustable resistance is electrically connected to respectively an end of the 13 resistance and the reverse input end of the 5th amplifier, and the other end of adjustable resistance is electrically connected to respectively the output of the 5th amplifier and the input of HF switch power conversion module; One end of described the 14 resistance is electrically connected to respectively the positive input of the 11 resistance, the 12 resistance and the 5th amplifier; The other end ground connection of described the 12 resistance, the 13 resistance and the 14 resistance; The other end of described the 11 resistance is electrically connected to the positive input of the first amplifier.
The model of described first to fourth amplifier is tl082, and the model of described the 5th amplifier is lm358.
The utility model advantage compared with prior art is: the Electro Magnetic Compatibility that can improve Switching Power Supply, main path is the amplitude by the harmonic signal of the switching frequency that exists in reduction system after chaotization system, cut down the spike of harmonic component, thereby conducted interference is reduced.The reason of advantage has further expansion explanation in an embodiment.
Description of drawings
Fig. 1 is circuit block diagram of the present utility model;
Fig. 2 is the circuit theory diagrams of simulation chaos signal generator in the utility model;
Fig. 3 is the circuit theory diagrams of simulation chaotic Signals Processing module in the utility model.
Embodiment
The below describes embodiment of the present utility model in detail, and the example of described embodiment is shown in the drawings.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, term " first " to " the 14 " only is used for describing purpose, and can not be interpreted as indication or hint relative importance.
As shown in Figure 1, it is a kind of computer power supply, comprises electromagnetic compatibility filter, input rectifying and filter, HF switch power conversion module, multichannel output rectification and filter, accessory power supply module, PDM keyer, auxiliary circuit and simulation chaos signal generator and simulation chaotic Signals Processing module; Wherein said electromagnetic compatibility filter receives the 220V AC signal and processes rear output; Described input rectifying and filter receive the output signal of electromagnetic compatibility filter and carry out being defeated by HF switch power conversion module after signal is processed, described multichannel output rectification receive the output signal of HF switch power conversion module with filter and process after realize multichannel output, described auxiliary circuit receives the output signal of the whole and filter of multichannel output and processes rear output; Described simulation chaotic Signals Processing module receives the output signal of simulation chaos signal generator and also processes rear output, described PDM keyer receive simultaneously the output signal of accessory power supply module, auxiliary circuit and simulation chaotic Signals Processing module and process after export to HF switch power conversion module.
During work, ac input signal is first by the electromagnetic compatibility filter, then pass through input rectifying and filtering, obtain the direct current output of 310V, pass through again HF switch power conversion module, secondary side at high frequency transformer obtains multichannel output, through multichannel output rectification and filtering output ± 5V, the direct currents such as ± 12V.PDM keyer is implemented to control to two power switch pipes in main circuit, guarantees that two manage conducting in turn and forbid conducting simultaneously; The simulation chaos signal generator produces chaotic signal, simulation chaotic Signals Processing module is amplified and translation chaotic signal, make it to be fit to the access PDM keyer, form the chaotic modulation signal, PDM keyer is defeated by signal again HF switch power conversion module, has kept the normal operation of power-supply system, can cut down the spike of harmonic component simultaneously, conducted interference is reduced, thereby improve Electro Magnetic Compatibility.
In the present embodiment, as shown in Figure 2, described simulation chaos signal generator comprises first to fourth amplifier IC1-IC4, the first to the tenth resistance R 1-R10, resistance R and the first to the 3rd capacitor C 1-C3; One end of wherein said the 4th resistance R 4 is electrically connected to respectively the positive input of the first amplifier IC1, the positive input of the second amplifier IC1, an end of the second capacitor C 2 and an end of resistance R, and the other end of the 4th resistance R 4 is electrically connected to respectively the output of the first amplifier IC1 and an end of the 3rd resistance R 3; The other end of described the 3rd resistance R 3 is electrically connected to respectively the reverse input end of the first amplifier IC1 and an end of the second resistance R 2; The other end of described the second resistance R 2 is electrically connected to respectively the output of the second amplifier IC1 and an end of the 3rd capacitor C 3; The other end of described the 3rd capacitor C 3 is electrically connected to respectively the reverse input end of the second amplifier IC1 and an end of the first resistance R 1; The other end ground connection of described the first resistance R 1; The other end of described resistance R is electrically connected to respectively an end of the first capacitor C 1, an end of the tenth resistance R 10, an end of the 8th resistance R 8, the positive input of the 3rd amplifier IC3 and the positive input of the 4th amplifier IC4; The other end ground connection of described the second capacitor C 2 and the first capacitor C 1; The other end of described the tenth resistance R 10 is electrically connected to respectively the output of the 3rd amplifier IC3 and an end of the 9th resistance R 9; The other end of described the 9th resistance R 9 is electrically connected to respectively the reverse input end of the 3rd amplifier IC3 and an end of the 5th resistance R 5; The other end of described the 8th resistance R 8 is electrically connected to respectively the output of the 4th amplifier IC4 and an end of the 7th resistance R 7; The other end of described the 7th resistance R 7 is electrically connected to respectively the reverse input end of the 4th amplifier IC4 and an end of the 6th resistance R 6, the other end ground connection of described the 5th resistance R 5 and the 6th resistance R 6.The model of described first to fourth amplifier IC1-IC4 is tl082c_m, and the power positive end of first to fourth amplifier IC1-IC4 all connects+12 direct-current working volts, and the power supply negative terminal of first to fourth amplifier IC1-IC4 all connects-12 direct-current working volts.
During work, the first amplifier IC1, the second amplifier IC2, first to fourth resistance R 1-R4, the first to the 3rd capacitor C 1-C3 and resistance R consist of oscillator, wherein the equivalence of the first amplifier IC1, the second amplifier IC2 and peripheral components thereof is the inductance L in parallel with the second capacitor C 2, and its internal resistance is r0; The 3rd amplifier IC3, the 4th amplifier IC4 and peripheral cell thereof consist of nonlinear combination device or Cai Shi diode, establish its electricity and lead and be G.If on the second capacitor C 2, voltage is u2, on the first capacitor C 1, voltage is u1, and the electric current of equivalent inductance L is i1, has following relationship:
When R got suitable value, u1 and u2 were the chaos voltage signal.
In the present embodiment, as shown in Figure 3, described simulation chaotic Signals Processing module comprises the 5th amplifier IC5, adjustable resistance Rf and the 11 to the 14 resistance R 11-R14; The end of wherein said adjustable resistance Rf is electrically connected to respectively an end of the 13 resistance R 13 and the reverse input end of the 5th amplifier IC5, and the other end of adjustable resistance Rf is electrically connected to respectively the output of the 5th amplifier IC5 and the input of HF switch power conversion module; One end of described the 14 resistance R 14 is electrically connected to respectively the positive input of the 11 resistance R 11, the 12 resistance R 12 and the 5th amplifier IC5; The other end ground connection of described the 12 resistance R 12, the 13 resistance R 13 and the 14 resistance R 14; The other end of described the 11 resistance R 11 is electrically connected to the positive input of the first amplifier IC1.The model of described the 5th amplifier IC5 is lm358n_1, and the power positive end of the 5th amplifier IC5 all connects+12 direct-current working volts, the power supply negative terminal ground connection of the 5th amplifier IC5.
During work, establishing the 5th amplifier IC5 in-phase end voltage to earth is u+, and the end of oppisite phase voltage to earth is u-, according to the operation principle of operational amplifier, can list following relational expression:
Further, output signal can be expressed as:
Following formula explanation process discharge circuit is to chaotic signal
Carried out the translation amplification, adjusted Rf, made the amplifier output signal be in the scope of [0.5,3.5].
Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: in the situation that do not break away from principle of the present utility model and aim can be carried out multiple variation, modification, replacement and distortion to these embodiment, scope of the present utility model is limited by claim and equivalent thereof.
Claims (3)
1. a computer power supply, comprise electromagnetic compatibility filter, input rectifying and filter, HF switch power conversion module, multichannel output rectification and filter, accessory power supply module, PDM keyer and auxiliary circuit; Wherein said electromagnetic compatibility filter receives the 220V AC signal and processes rear output; Described input rectifying and filter receive the output signal of electromagnetic compatibility filter and carry out being defeated by HF switch power conversion module after signal is processed, described multichannel output rectification receive the output signal of HF switch power conversion module with filter and process after realize multichannel output, described auxiliary circuit receives the output signal of the whole and filter of multichannel output and processes rear output; Characterized by further comprising simulation chaos signal generator and simulation chaotic Signals Processing module, described simulation chaotic Signals Processing module receives the output signal of simulation chaos signal generator and also processes rear output, described PDM keyer receive simultaneously the output signal of accessory power supply module, auxiliary circuit and simulation chaotic Signals Processing module and process after export to HF switch power conversion module.
2. computer power supply according to claim 1, is characterized in that described simulation chaos signal generator comprises first to fourth amplifier (IC1-IC4), the first to the tenth resistance (R1-R10), resistance (R) and the first to the 3rd electric capacity (C1-C3); One end of wherein said the 4th resistance (R4) is electrically connected to respectively the positive input of the first amplifier (IC1), the positive input of the second amplifier (IC1), an end of the second electric capacity (C2) and an end of resistance (R), and the other end of the 4th resistance (R4) is electrically connected to respectively the output of the first amplifier (IC1) and an end of the 3rd resistance (R3); The other end of described the 3rd resistance (R3) is electrically connected to respectively the reverse input end of the first amplifier (IC1) and an end of the second resistance (R2); The other end of described the second resistance (R2) is electrically connected to respectively the output of the second amplifier (IC1) and an end of the 3rd electric capacity (C3); The other end of described the 3rd electric capacity (C3) is electrically connected to respectively the reverse input end of the second amplifier (IC1) and an end of the first resistance (R1); The other end ground connection of described the first resistance (R1); The other end of described resistance (R) is electrically connected to respectively an end of the first electric capacity (C1), an end of the tenth resistance (R10), an end of the 8th resistance (R8), the positive input of the 3rd amplifier (IC3) and the positive input of the 4th amplifier (IC4); The other end ground connection of described the second electric capacity (C2) and the first electric capacity (C1); The other end of described the tenth resistance (R10) is electrically connected to respectively the output of the 3rd amplifier (IC3) and an end of the 9th resistance (R9); The other end of described the 9th resistance (R9) is electrically connected to respectively the reverse input end of the 3rd amplifier (IC3) and an end of the 5th resistance (R5); The other end of described the 8th resistance (R8) is electrically connected to respectively the output of the 4th amplifier (IC4) and an end of the 7th resistance (R7); The other end of described the 7th resistance (R7) is electrically connected to respectively the reverse input end of the 4th amplifier (IC4) and an end of the 6th resistance (R6), the other end ground connection of described the 5th resistance (R5) and the 6th resistance (R6); Described simulation chaotic Signals Processing module comprises the 5th amplifier (IC5), adjustable resistance (Rf) and the 11 to the 14 resistance (R11-R14); One end of wherein said adjustable resistance (Rf) is electrically connected to respectively an end of the 13 resistance (R13) and the reverse input end of the 5th amplifier (IC5), and the other end of adjustable resistance (Rf) is electrically connected to respectively the output of the 5th amplifier (IC5) and the input of HF switch power conversion module; One end of described the 14 resistance (R14) is electrically connected to respectively the positive input of the 11 resistance (R11), the 12 resistance (R12) and the 5th amplifier (IC5); The other end ground connection of described the 12 resistance (R12), the 13 resistance (R13) and the 14 resistance (R14); The other end of described the 11 resistance (R11) is electrically connected to the positive input of the first amplifier (IC1).
3. computer power supply according to claim 2, is characterized in that the model of described first to fourth amplifier (IC1-IC4) is tl082, and the model of described the 5th amplifier (IC5) is lm358.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220596280 CN203014664U (en) | 2012-11-13 | 2012-11-13 | Computer power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220596280 CN203014664U (en) | 2012-11-13 | 2012-11-13 | Computer power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203014664U true CN203014664U (en) | 2013-06-19 |
Family
ID=48606220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220596280 Expired - Fee Related CN203014664U (en) | 2012-11-13 | 2012-11-13 | Computer power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203014664U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969879A (en) * | 2012-11-13 | 2013-03-13 | 顺德职业技术学院 | Computer power supply |
| CN110750126A (en) * | 2019-12-11 | 2020-02-04 | 合肥本源量子计算科技有限责任公司 | Multi-channel voltage source suitable for low-temperature environment |
| CN112416105A (en) * | 2021-01-21 | 2021-02-26 | 北京中新绿景科技有限公司 | Multi-channel TFX structure power supply |
-
2012
- 2012-11-13 CN CN 201220596280 patent/CN203014664U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969879A (en) * | 2012-11-13 | 2013-03-13 | 顺德职业技术学院 | Computer power supply |
| CN110750126A (en) * | 2019-12-11 | 2020-02-04 | 合肥本源量子计算科技有限责任公司 | Multi-channel voltage source suitable for low-temperature environment |
| CN110750126B (en) * | 2019-12-11 | 2023-02-03 | 合肥本源量子计算科技有限责任公司 | Multi-channel voltage source suitable for low-temperature environment |
| CN112416105A (en) * | 2021-01-21 | 2021-02-26 | 北京中新绿景科技有限公司 | Multi-channel TFX structure power supply |
| CN112416105B (en) * | 2021-01-21 | 2021-05-11 | 北京中新绿景科技有限公司 | Multi-channel TFX structure power supply |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202721450U (en) | Fully controllable energy feedback device | |
| CN106231736B (en) | A kind of LED lamp tube power driving circuit | |
| CN203014664U (en) | Computer power supply | |
| CN104638891A (en) | Common-mode voltage suppression system for photovoltaic grid-connected inverter | |
| CN205490225U (en) | Two -way ACDC circuit of high -frequency chopper isolated form | |
| CN103084711B (en) | Double-contravariant alternating square wave argon tungsten-arc welder and control method thereof | |
| CN203368357U (en) | High-power modular plasma generator power source | |
| CN104253560A (en) | Direct current pulse power supply device for electric dust precipitation | |
| CN103986362B (en) | A kind of Z source inverter circuit | |
| CN104128680B (en) | Electrochemical machining high frequency pulse power source based on SOPC technology | |
| CN203933369U (en) | A kind of common mode Electromagnetic interference filter for AC/AC switch converters | |
| CN102386800B (en) | Low-voltage heavy-current high-power pulse power supply | |
| CN109302811B (en) | Suspension railway vehicle static debugging system | |
| CN203747679U (en) | Power adapter circuit resistant to high-frequency interference | |
| CN103647469B (en) | A kind of power supply of three-level inverter Switching Power Supply and protective circuit | |
| CN203301388U (en) | High-frequency and high-voltage power supply device for electrostatic precipitator | |
| CN104410267A (en) | Switching power source | |
| CN102969879A (en) | Computer power supply | |
| CN203918149U (en) | Electrolyzed Processing high frequency pulse power supply based on SOPC technology | |
| CN204539544U (en) | Solid state laser pumping xenon lamp power supply | |
| CN207184349U (en) | A kind of variable frequency microwave power supply | |
| CN203062065U (en) | Double inverse variation alternating current square wave tungsten electrode argon arc welding machine | |
| CN203840004U (en) | Intelligent high efficiency fast charger | |
| CN202488353U (en) | Zero-current turn-on low-voltage turn-off inverter type welding-cutting power supply circuit | |
| CN205754103U (en) | A kind of motor magnetic circuit controls efficient energy-saving device |
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: 20130619 Termination date: 20161113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |