CN107947561A - The power switch circuit of vulnerabilities scan forceful electric power - Google Patents
The power switch circuit of vulnerabilities scan forceful electric power Download PDFInfo
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- CN107947561A CN107947561A CN201810019860.8A CN201810019860A CN107947561A CN 107947561 A CN107947561 A CN 107947561A CN 201810019860 A CN201810019860 A CN 201810019860A CN 107947561 A CN107947561 A CN 107947561A
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- 238000001914 filtration Methods 0.000 claims abstract description 16
- 239000003990 capacitor Substances 0.000 claims description 48
- 238000004146 energy storage Methods 0.000 claims description 21
- 230000005611 electricity Effects 0.000 claims description 19
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 230000003760 hair shine Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims 1
- 230000009466 transformation Effects 0.000 claims 1
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 5
- 230000005662 electromechanics Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/36—Means for starting or stopping converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/78—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention relates to a kind of power switch circuit of vulnerabilities scan forceful electric power, including standby power control circuit, the second light-receiving device of opto-coupled feedback circuit, electronic switch S1, standby power transformer, standby power rectifying and wave-filtering output circuit and the ac-dc converter circuit for being connected to electric main；Standby power control circuit includes control chip IC1, control chip IC1 connection ac-dc converter circuits；Opto-coupled feedback circuit includes photoelectrical coupler, and photoelectrical coupler includes the first photophore to match and the second light-receiving device IC4；When electronic switch S1 is closed, the second light-receiving device IC4 is just short-circuited, it is impossible to by the COMP pins of the second light-receiving device IC4 feed back inputs electric current to control chip IC1；When electronic switch S1 is disconnected, then output+5V standby voltages.Thereby, its output that standby power is controlled by electronic switch S1, phenomena such as will not producing very big immediate current, sparking, oxidation, loose contact, extends the service life of computer power supply, also reduces cost.
Description
Technical field
The present invention relates to a kind of chassis power supply field, refers in particular to a kind of power switch circuit of vulnerabilities scan forceful electric power.
Background technology
At present, the computer of in the market is mainly ATX power supplys, and ATX power supply functions are to change the power supply of alternating current 220V
Into the direct current+5V needed for computer-internal, -5V ,+12V, -12V ,+3.3V ,+5VSB power supply, using "+5VSB ", " PS-ON "
Open and close of the combination to realize power supply be the most important feature of ATX power supplys, as long as the change of control " PS-ON " signal level
Change the open and close of just controllable power；Existing control method is to set mechanical switch straight in the output terminal of electric main
The open and close of the open and close, then realization+5VSB power supplys of switch control computer power supply are connect, but mechanical switch is adopted
Change the break-make of circuit with mechanical touching mode, since mechanical switch needs 3C certifications, cost is higher, and mechanical switch is direct
Very big immediate current can be produced when forceful electric power circuit is connected, the contact of switch shrapnel easily produces sparking, and sparking is also easy for
Make contact oxidation cause switch contact bad, switching function may be caused to fail, while touching has error, wears, has the service life
Number, so as to influence the service life of computer power supply.
Therefore, in present patent application, applicant has studied intensively a kind of power switch circuit of vulnerabilities scan forceful electric power
To solve the above problem.
The content of the invention
The present invention is to provide a kind of electricity of vulnerabilities scan forceful electric power for deficiency, main purpose present in the above-mentioned prior art
Source switching circuit, it controls the output of standby power by electronic switch S1, will not produce very big immediate current, sparking,
Phenomena such as oxidation, loose contact, extend the service life of computer power supply, also reduce cost.To realize above-mentioned purpose, this
Invention adopts the following technical scheme that：
A kind of power switch circuit of vulnerabilities scan forceful electric power, it is used to control standby power output in computer ATX electric power circuit,
Including standby power control circuit, the second light-receiving device of opto-coupled feedback circuit, electronic switch S1, standby power transformer, treat electromechanics
Source rectifying and wave-filtering output circuit and the ac-dc converter circuit for being connected to electric main；
The standby power control circuit includes control chip IC1, foregoing control chip IC1 connections ac-dc converter circuit；Institute
State opto-coupled feedback circuit and include photoelectrical coupler, the photoelectrical coupler include the first photophore to match and second by
The COMP pins of light device IC4, control chip IC1 connect the first pin 4 of second the second light-receiving device of light-receiving device IC4, the second light
The first pin 3 of device IC4 is grounded, and one end of electronic switch S1 passes through the COMP pins of resistance R16 connection control chips IC1, electricity
The other end ground connection of sub switch S1, the primary side of control chip IC1 connection standby power transformers, the two of standby power transformer
Secondary side connects standby power rectifying and wave-filtering output circuit；First photophore is connected to the secondary side of standby power transformer；
When electronic switch S1 is closed, the second light-receiving device IC4 is just short-circuited, and the secondary side of standby power transformer 20 shines through first
Device, the second light-receiving device IC4 cooperation after, it is impossible to drawn by the COMP of the second light-receiving device IC4 feed back inputs electric current to control chip IC1
Foot；
When electronic switch S1 disconnections, cooperation of the secondary side through the first photophore, the second light-receiving device IC4 of standby power transformer 20
Afterwards, by the COMP pins of the second light-receiving device IC4 feed back inputs electric current to control chip IC1；The control chip IC1 output voltages
To the primary side of standby power transformer, the secondary side institute output voltage through standby power transformer, standby power rectification filter
Ripple output circuit controls output+5V standby voltages.
As a preferred embodiment, the standby power control circuit further includes resistance R22, resistance R14, resistance R34, electricity
Hold C2, resistance R39, resistance R24, resistance R21, resistance R25, resistance R27, resistance R11, resistance R17, resistance R20, resistance R1,
First switch pipe, second switch pipe, capacitance C5, polar capacitor C11, polar capacitor C6, capacitance C26, zener diode D6, voltage stabilizing
Diode ZD1, diode D38, diode D39, diode D1, diode D5, diode D7, diode D4 and the second light
Device IC3A；There is foregoing control chip IC1 controlling switch 1 to controlling switch 8, the controlling switch 1 to be grounded by resistance R22,
Pin 2, the controlling switch 2 are also grounded foregoing COMP pins by capacitance C4 in order to control；The controlling switch 3 is CS pins,
The controlling switch 3 connects one end, one end of resistance R14 of capacitance C2, the other end ground connection of capacitance C2 at the same time；The control is drawn
Foot 4 is grounded；The controlling switch 5 is G pins, and the controlling switch 5 connects one end of resistance R39, and the other end of resistance R39 is same
When connect one end of resistance R34, the control terminal of switching tube, the other end of resistance R34 connects the other end of resistance R14, electricity at the same time
Hinder one end of R1, the other end ground connection of resistance R1, one end of the output terminal connection resistance R1 of switching tube, the input terminal company of switching tube
Connect the cathode of diode D7, the anode of the anode connection zener diode D6 of diode D7, the cathode connection of zener diode D6
Direct voltage source VDC；
The controlling switch 6 is VCC pin, and the controlling switch 6 connects the anode of diode D2, and the cathode of diode D2 passes through
One end of resistance R24 connection resistance R20, the other end connection diode D5 cathodes of resistance R20, the anode of diode D5 pass through electricity
R17 ground connection, the anode of the cathode connecting diode D5 of polar capacitor C6 are hindered, the anode of polar capacitor C6 is grounded, diode D5's
Anode connects one end of resistance R11, the output terminal of switching tube Q1 at the same time, and the other end of resistance R11 connects the second light-receiving device IC3A
Second pin 4, the second pin 3 of the second light-receiving device IC3A is grounded by capacitance C26, the control terminal connection voltage stabilizing of switching tube Q1
The anode of diode ZD1, the plus earth of zener diode ZD1, the cathode of the input terminal connection diode D1 of switching tube Q1, two
The anode connection voltage source VCC of pole pipe D1；The controlling switch 8 is HV pins, and the controlling switch 8 is connected by resistance R21
One end of resistance R25, resistance R25 connection resistance R27, the other end of resistance R27 connect the anode of diode D39, two poles at the same time
The anode of pipe D38, the zero of the cathode connection electric main of the firewire L of the cathode connection electric main of diode D39, pole pipe D38
Line N.
As a preferred embodiment, the controlling switch 7 is spare pin.
As a preferred embodiment, the standby power transformer has standby power pin 2, standby power pin 4, standby
Power pins 5 and standby power pin 6, the standby power pin 2 connects the cathode of zener diode D6, described to treat electromechanics
Source pin 4 connects the cathode of diode D7, and the standby power pin 5 connects one end of resistance R20, the standby power pin
6 ground connection.
As a preferred embodiment, the standby power rectifying and wave-filtering output circuit includes the first rectification module and the first electricity
Hold inductor filter module, foregoing standby power transformer connects the first rectification module, first electricity of the first rectification module connection
Holding inductor filter module, first rectification module exports after receiving the output signal processing of standby power transformer, and described the
Output+5V standby voltages after the output signal processing of one capacitor and inductor filter module the first rectification module of reception.
As a preferred embodiment, the first capacitor and inductor filter module is connected with first voltage controller, and described
One voltage controller connects standby power control circuit.
As a preferred embodiment, the ac-dc converter circuit includes bridge rectifier module, PFC inductance, PFC-PWN controls
Device processed, high pressure diode filter module, high-voltage capacitance filter module, main power transformer, the second capacitor and inductor filter module,
Two rectification modules, energy storage inductor, the first dc-dc, the second dc-dc, the 3rd capacitor and inductor filter module, second
Voltage controller, protection IC modules, VCC power modules and the EMI circuits for being connected to electric main；The EMI circuits it is defeated
Outlet connects bridge-type rectification module, and the bridge rectifier module connects PFC inductance, the PFC inductance connections high pressure diode filter
Ripple module, the high pressure diode filter module connect high-voltage capacitance filter module, the high-voltage capacitance filter module connection master
Power transformer, the main power transformer connect the second rectification module, and second rectification module connects energy storage inductor, described
Energy storage inductor connects the second capacitor and inductor filter module, the first dc-dc, the second dc-dc and the 3rd at the same time
Capacitor and inductor filter module, the second capacitor and inductor filter module receive energy storage inductor output signal processing after output+12V electricity
Press, the voltage of output+5V, the second dc-dc connect after the output signal processing of the first dc-dc reception energy storage inductor
The voltage of output+3.3V, the 3rd capacitor and inductor filter module receive energy storage inductor after the output signal processing of receipts energy storage inductor
The voltage of output -12V after output signal processing, the second capacitor and inductor filter module, the first dc-dc, the 2nd DC-DC turn
Parallel operation, the 3rd capacitor and inductor filter module and the first capacitor and inductor filter module are all connected with protection IC modules, the protection IC
Module and foregoing standby power control circuit are all connected with VCC power modules, and the protection IC modules are received from the first capacitance electricity
PG signals and PS-ON signals, the VCC power modules connection PFC-PWN controls are exported after feeling the output signal processing of filter module
Device processed, the second dc-dc connect PFC-PWN controllers, the PFC-PWN controllers difference by second voltage controller
Connect high pressure diode filter module and main power transformer.
As a preferred embodiment, the power switch circuit is arranged in computer cabinet, the surface of the cabinet
Dew is equipped with hand control switch, and the closure of the hand control switch linkage aforementioned electronic switch S1, disconnect.
As a preferred embodiment, the hand control switch is to wave control formula button.
The present invention has clear advantage and beneficial effect compared with prior art, specifically：Pass through standby power control
Electronic switch S1 is opened and closed to control the output of standby power in circuit processed, is not required to do too big improvement to the circuit of chassis power supply, its
Circuit structure design it is ingenious rationally, by control the second light-receiving device IC4 whether can feed back input electric current to control chip IC1's
COMP pins, to control+5V standby voltages in whole on-off circuit（Also+5SB is referred to）Output, equivalent to vulnerabilities scan forceful electric power,
Avoid directly using mechanical switch in forceful electric power circuit, so that very big immediate current and be not in sparking, oxygen will not be produced
Phenomena such as change, loose contact, extend the service life of computer power supply；Moreover, using electronic switch S1, it is not necessary to 3C certifications,
Cost is relatively low, has preferable economic benefit；And overall construction design is ingenious, each circuit performance is stablized and safe and reliable.
For more clearly illustrate the present invention architectural feature and effect, come below in conjunction with the accompanying drawings with specific embodiment to its into
Row describes in detail.
Brief description of the drawings
Fig. 1 is the substantially control structure schematic diagram of embodiments of the present invention；
Fig. 2 is the standby power control circuit partial schematic diagram of embodiments of the present invention；
Fig. 3 is the overall control block diagram of embodiments of the present invention.
Drawing reference numeral explanation：
10th, standby power control circuit 20, standby power transformer
30th, standby power rectifying and wave-filtering output circuit 40, ac-dc converter circuit
50th, electric main.
Embodiment
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1 to Figure 3, a kind of power switch circuit of vulnerabilities scan forceful electric power, it is used for computer ATX electric power circuit
Middle control standby power output, including standby power control circuit, the second light-receiving device of opto-coupled feedback circuit, electronic switch S1, treat
Electromechanical source transformer, standby power rectifying and wave-filtering output circuit and the ac-dc converter circuit for being connected to electric main；It is described
Standby power control circuit includes control chip IC1, foregoing control chip IC1 connections ac-dc converter circuit；The optocoupler is anti-
Current feed circuit includes photoelectrical coupler, and the photoelectrical coupler includes the first photophore to match and the second light-receiving device IC4,
The COMP pins of control chip IC1 connect the first pin 4 of second the second light-receiving device of light-receiving device IC4, and the of the second light-receiving device IC4
One pin 3 is grounded, one end of electronic switch S1 by the COMP pins of resistance R16 connection control chips IC1, electronic switch S1's
The other end is grounded, the primary side of control chip IC1 connection standby power transformers, and the secondary side connection of standby power transformer is treated
Electromechanical source rectifying and wave-filtering output circuit；First photophore is connected to the secondary side of standby power transformer
When electronic switch S1 is closed, the second light-receiving device IC4 is just short-circuited, and the secondary side of standby power transformer 20 shines through first
Device, the second light-receiving device IC4 cooperation after, it is impossible to drawn by the COMP of the second light-receiving device IC4 feed back inputs electric current to control chip IC1
Foot；
When electronic switch S1 disconnections, cooperation of the secondary side through the first photophore, the second light-receiving device IC4 of standby power transformer 20
Afterwards, by the COMP pins of the second light-receiving device IC4 feed back inputs electric current to control chip IC1；The control chip IC1 output voltages
To the primary side of standby power transformer, the secondary side institute output voltage through standby power transformer, standby power rectification filter
Ripple output circuit controls output+5V standby voltages.
In general, the power switch circuit is arranged in computer cabinet, the surface dew of the cabinet is equipped with control manually
System switch, the closure of the hand control switch linkage aforementioned electronic switch S1, disconnect.The hand control switch decision design
To wave control formula button.In this way, for user, it is in cabinet peripheral operation hand control switch, actually joins
The closure of dynamic electronic switch S1, disconnect, and chassis power supply is controlled in a manner of vulnerabilities scan forceful electric power.
Certainly, the output of standby power is controlled mentioned by electronic switch S1 opening and closings in standby power control circuit, it is right
The circuit of chassis power supply is not required to do too big improvement, its circuit structure design is ingenious rationally, by whether controlling the second light-receiving device IC4
Can feed back input electric current to control chip IC1 COMP pins, to control+5V standby voltages in whole on-off circuit（Also refer to+
5SB）Output.
In the present embodiment, the standby power control circuit 10 further includes resistance R22, resistance R16, resistance R14, resistance
R34, capacitance C2, resistance R39, resistance R24, resistance R21, resistance R25, resistance R27, resistance R11, resistance R17, resistance R20, electricity
Hinder R1, first switch pipe, second switch pipe, capacitance C5, polar capacitor C11, polar capacitor C6, capacitance C26, zener diode
D6, zener diode ZD1, diode D38, diode D39, diode D1, diode D5, diode D7, diode D4 and
There is second light-receiving device IC3A, foregoing control chip IC1 controlling switch 1 to controlling switch 8, the controlling switch 1 to pass through resistance
R22 is grounded, and pin 2, the controlling switch 2 are also grounded foregoing COMP pins by capacitance C4 in order to control, and the controlling switch 3 is
CS pins, the controlling switch 3 connect one end, one end of resistance R14 of capacitance C2, the other end ground connection of capacitance C2 at the same time；Institute
Controlling switch 4 is stated to be grounded；The controlling switch 5 is G pins, and the controlling switch 5 connects one end of resistance R39, resistance R39's
The other end connects one end of resistance R34, the control terminal of switching tube at the same time, and the other end of resistance R34 connects the another of resistance R14 at the same time
One end, one end of resistance R1, the other end ground connection of resistance R1, one end of the output terminal connection resistance R1 of switching tube, switching tube
The cathode of input terminal connection diode D7, the anode of the anode connection zener diode D6 of diode D7, zener diode D6's
Cathode connection direct voltage source VDC；
The controlling switch 6 connects the anode of diode D2, and the cathode of diode D2 passes through the one of resistance R24 connection resistance R20
End, the other end connection diode D5 cathodes of resistance R20, the anode of diode D5 are grounded by resistance R17, polar capacitor C6's
The anode of cathode connecting diode D5, the anode ground connection of polar capacitor C6, the anode of diode D5 connect the one of resistance R11 at the same time
End, the output terminal of switching tube Q1, the other end of resistance R11 connect the second pin 4 of the second light-receiving device IC3A, the second light-receiving device
The second pin 3 of IC3A is grounded by capacitance C26, the anode of the control terminal connection zener diode ZD1 of switching tube Q1, voltage stabilizing two
The plus earth of pole pipe ZD1, the cathode of the input terminal connection diode D1 of switching tube Q1, the anode connection voltage source of diode D1
VCC；The controlling switch 7 is spare pin；The controlling switch 8 passes through resistance R21 connections resistance R25, resistance R25 connection electricity
One end of R27 is hindered, the other end of resistance R27 connects the anode of diode D39, the anode of diode D38, diode D39 at the same time
Cathode connection electric main 50 firewire L, pole pipe D38 cathode connection electric main 50 zero curve N.
In the present embodiment, the standby power transformer 20 has standby power pin 2, standby power pin 4, treats electromechanics
Source pin 5 and standby power pin 6, the standby power pin 2 connect the cathode of zener diode D6, the standby power
Pin 4 connects the cathode of diode D7, and the standby power pin 5 connects one end of resistance R20, the standby power pin 6
Ground connection.
The standby power rectifying and wave-filtering output circuit 30 includes the first rectification module and the first capacitor and inductor filter module,
Foregoing standby power transformer 20 connects the first rectification module, and first rectification module connects the first capacitor and inductor filtering mould
Block, first rectification module export after receiving the output signal processing of standby power transformer 20, first capacitor and inductor
Output+5V standby voltages after the output signal processing of filter module the first rectification module of reception；The first capacitor and inductor filtering
Module is connected with first voltage controller, the first voltage controller connection standby power control circuit 10.
The ac-dc converter circuit 40 includes bridge rectifier module, PFC inductance, PFC-PWN controllers, high pressure diode
Filter module, high-voltage capacitance filter module, main power transformer, the second capacitor and inductor filter module, the second rectification module, energy storage
Inductance, the first dc-dc, the second dc-dc, the 3rd capacitor and inductor filter module, second voltage controller, protection
IC modules, VCC power modules and the EMI circuits for being connected to electric main 50, the output terminal connection bridge-type of the EMI circuits are whole
Flow module, the bridge rectifier module connect PFC inductance, the PFC inductance connections high pressure diode filter module, the high pressure
Diode filter module connects high-voltage capacitance filter module, and the high-voltage capacitance filter module connects main power transformer, described
Main power transformer connects the second rectification module, and second rectification module connects energy storage inductor, and the energy storage inductor connects at the same time
Connect the second capacitor and inductor filter module, the first dc-dc, the second dc-dc and the 3rd capacitor and inductor filtering mould
Block, the second capacitor and inductor filter module receive energy storage inductor output signal processing after output+12V voltage, the first DC-DC turn
The voltage of output+5V, the second dc-dc receive the defeated of energy storage inductor after the output signal processing of parallel operation reception energy storage inductor
Go out the voltage of output+3.3V after signal processing, after the 3rd capacitor and inductor filter module receives the output signal processing of energy storage inductor
The voltage of output -12V, the second capacitor and inductor filter module, the first dc-dc, the second dc-dc, the 3rd capacitance
Inductor filter module and the first capacitor and inductor filter module are all connected with protection IC modules, protection IC modules and foregoing standby
Power control circuit 10 is all connected with VCC power modules, and the protection IC modules are received from the first capacitor and inductor filter module
PG signals and PS-ON signals are exported after exporting signal processing, the VCC power modules connect PFC-PWN controllers, the 2nd DC-
DC converters connect PFC-PWN controllers by second voltage controller, and the PFC-PWN controllers connect two pole of high pressure respectively
Body filter module and main power transformer.
Designing points of the present invention are that it is mainly controlled by electronic switch S1 opening and closings in standby power control circuit
The output of standby power, is not required to do too big improvement, its circuit structure design is ingenious rationally, passes through control to the circuit of chassis power supply
Second light-receiving device IC4 whether can feed back input electric current to control chip IC1 COMP pins, come control in whole on-off circuit+
5V standby voltages（Also+5SB is referred to）Output, equivalent to vulnerabilities scan forceful electric power, avoid directly opening using machinery in forceful electric power circuit
Close, so that phenomena such as very big immediate current will not be produced and be not in sparking, oxidation, loose contact, extend and calculate electromechanics
The service life in source；Moreover, using electronic switch S1, it is not necessary to which 3C certifications, cost is relatively low, has preferable economic benefit；With
And overall construction design is ingenious, each circuit performance is stablized and safe and reliable.
The above, is only present pre-ferred embodiments, is not intended to limit the scope of the present invention, therefore
Any subtle modifications, equivalent variations and modifications that every technical spirit according to the present invention makees above example, still belong to
In the range of technical solution of the present invention.
Claims (9)
1. a kind of power switch circuit of vulnerabilities scan forceful electric power, it is used to control standby power defeated in computer ATX electric power circuit
Go out, it is characterised in that：Including standby power control circuit, the second light-receiving device of opto-coupled feedback circuit, electronic switch S1, standby power
Transformer, standby power rectifying and wave-filtering output circuit and the ac-dc converter circuit for being connected to electric main；
The standby power control circuit includes control chip IC1, foregoing control chip IC1 connections ac-dc converter circuit；Institute
State opto-coupled feedback circuit and include photoelectrical coupler, the photoelectrical coupler include the first photophore to match and second by
The COMP pins of light device IC4, control chip IC1 connect the first pin 4 of second the second light-receiving device of light-receiving device IC4, the second light
The first pin 3 of device IC4 is grounded, and one end of electronic switch S1 passes through the COMP pins of resistance R16 connection control chips IC1, electricity
The other end ground connection of sub switch S1, the primary side of control chip IC1 connection standby power transformers, the two of standby power transformer
Secondary side connects standby power rectifying and wave-filtering output circuit；First photophore is connected to the secondary side of standby power transformer；
When electronic switch S1 is closed, the second light-receiving device IC4 is just short-circuited, and the secondary side of standby power transformer 20 shines through first
Device, the second light-receiving device IC4 cooperation after, it is impossible to drawn by the COMP of the second light-receiving device IC4 feed back inputs electric current to control chip IC1
Foot；
When electronic switch S1 disconnections, cooperation of the secondary side through the first photophore, the second light-receiving device IC4 of standby power transformer 20
Afterwards, by the COMP pins of the second light-receiving device IC4 feed back inputs electric current to control chip IC1；The control chip IC1 output voltages
To the primary side of standby power transformer, the secondary side institute output voltage through standby power transformer, standby power rectification filter
Ripple output circuit controls output+5V standby voltages.
2. the power switch circuit of vulnerabilities scan forceful electric power according to claim 1, it is characterised in that：The standby power control
Circuit processed further includes resistance R22, resistance R14, resistance R34, capacitance C2, resistance R39, resistance R24, resistance R21, resistance R25, electricity
Hinder R27, resistance R11, resistance R17, resistance R20, resistance R1, first switch pipe, second switch pipe, capacitance C5, polar capacitor
C11, polar capacitor C6, capacitance C26, zener diode D6, zener diode ZD1, diode D38, diode D39, diode
D1, diode D5, diode D7, diode D4 and the second light-receiving device IC3A；Foregoing control chip IC1 has controlling switch 1
To controlling switch 8, the controlling switch 1 is grounded by resistance R22, foregoing COMP pins pin 2 in order to control, the controlling switch
2 are also grounded by capacitance C4；The controlling switch 3 is CS pins, and the controlling switch 3 connects one end, the electricity of capacitance C2 at the same time
Hinder one end of R14, the other end ground connection of capacitance C2；The controlling switch 4 is grounded；The controlling switch 5 is G pins, the control
Pin 5 processed connects one end of resistance R39, and the other end of resistance R39 connects one end of resistance R34, the control terminal of switching tube at the same time,
The other end of resistance R34 connects the other end of resistance R14, one end of resistance R1, the other end ground connection of resistance R1, switching tube at the same time
Output terminal connection resistance R1 one end, the cathode of the input terminal connection diode D7 of switching tube, the anode connection of diode D7
The anode of zener diode D6, the cathode connection direct voltage source VDC of zener diode D6；
The controlling switch 6 is VCC pin, and the controlling switch 6 connects the anode of diode D2, and the cathode of diode D2 passes through
One end of resistance R24 connection resistance R20, the other end connection diode D5 cathodes of resistance R20, the anode of diode D5 pass through electricity
R17 ground connection, the anode of the cathode connecting diode D5 of polar capacitor C6 are hindered, the anode of polar capacitor C6 is grounded, diode D5's
Anode connects one end of resistance R11, the output terminal of switching tube Q1 at the same time, and the other end of resistance R11 connects the second light-receiving device IC3A
Second pin 4, the second pin 3 of the second light-receiving device IC3A is grounded by capacitance C26, the control terminal connection voltage stabilizing of switching tube Q1
The anode of diode ZD1, the plus earth of zener diode ZD1, the cathode of the input terminal connection diode D1 of switching tube Q1, two
The anode connection voltage source VCC of pole pipe D1；The controlling switch 8 is HV pins, and the controlling switch 8 is connected by resistance R21
One end of resistance R25, resistance R25 connection resistance R27, the other end of resistance R27 connect the anode of diode D39, two poles at the same time
The anode of pipe D38, the zero of the cathode connection electric main of the firewire L of the cathode connection electric main of diode D39, pole pipe D38
Line N.
3. the power switch circuit of vulnerabilities scan forceful electric power according to claim 2, it is characterised in that：The controlling switch 7
For spare pin.
4. the power switch circuit of vulnerabilities scan forceful electric power according to claim 2, it is characterised in that：The standby power becomes
Depressor has standby power pin 2, standby power pin 4, standby power pin 5 and standby power pin 6, the standby power
Pin 2 connects the cathode of zener diode D6, and the standby power pin 4 connects the cathode of diode D7, the standby power
Pin 5 connects one end of resistance R20, and the standby power pin 6 is grounded.
5. the power switch circuit of vulnerabilities scan forceful electric power according to claim 1, it is characterised in that：The standby power is whole
Stream filtering output circuit includes the first rectification module and the first capacitor and inductor filter module, and foregoing standby power transformer connects the
One rectification module, first rectification module connect the first capacitor and inductor filter module, and first rectification module receives standby
Exported after the output signal processing of power transformer, the first capacitor and inductor filter module receives the output of the first rectification module
Output+5V standby voltages after signal processing.
6. the power switch circuit of vulnerabilities scan forceful electric power according to claim 2, it is characterised in that：The first capacitance electricity
Sense filter module is connected with first voltage controller, and the first voltage controller connects standby power control circuit.
7. the power switch circuit of vulnerabilities scan forceful electric power according to claim 4, it is characterised in that：The AC-DC conversion
Circuit includes bridge rectifier module, PFC inductance, PFC-PWN controllers, high pressure diode filter module, high-voltage capacitance filtering mould
Block, main power transformer, the second capacitor and inductor filter module, the second rectification module, energy storage inductor, the first dc-dc,
Two dc-dcs, the 3rd capacitor and inductor filter module, second voltage controller, protection IC modules, VCC power modules and
It is connected to the EMI circuits of electric main；The output terminal connection bridge-type rectification module of the EMI circuits, the bridge rectifier module
PFC inductance, the PFC inductance connections high pressure diode filter module are connected, the high pressure diode filter module connects high pressure
Capacitor filtering module, the high-voltage capacitance filter module connect main power transformer, and the main power transformer connection second is whole
Flow module, the second rectification module connection energy storage inductor, the energy storage inductor while the second capacitor and inductor filter module of connection,
First dc-dc, the second dc-dc and the 3rd capacitor and inductor filter module, the second capacitor and inductor filter module
The voltage of output+12V, the first dc-dc receive the output of energy storage inductor after the output signal processing of reception energy storage inductor
The voltage of output+5V after signal processing, the second dc-dc receive energy storage inductor output signal processing after output+3.3V
Voltage, the 3rd capacitor and inductor filter module receive energy storage inductor output signal processing after output -12V voltage, second electricity
Hold inductor filter module, the first dc-dc, the second dc-dc, the 3rd capacitor and inductor filter module and the first electricity
Hold inductor filter module and be all connected with protection IC modules, the protection IC modules and foregoing standby power control circuit are all connected with VCC
Power module, the protection IC modules export PG signals after receiving the output signal processing from the first capacitor and inductor filter module
With PS-ON signals, the VCC power modules connect PFC-PWN controllers, and the second dc-dc is controlled by second voltage
Device connects PFC-PWN controllers, and the PFC-PWN controllers connect high pressure diode filter module and main power source transformation respectively
Device.
8. the power switch circuit of vulnerabilities scan forceful electric power according to claim 1, it is characterised in that：The power switch electricity
Road is arranged in computer cabinet, and the surface dew of the cabinet is equipped with hand control switch, the hand control switch linkage
The closure of aforementioned electronic switch S1, disconnect.
9. the power switch circuit of vulnerabilities scan forceful electric power according to claim 8, it is characterised in that：The control manually is opened
Close to wave control formula button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810019860.8A CN107947561B (en) | 2018-01-09 | 2018-01-09 | Power switch circuit for controlling strong current by weak current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810019860.8A CN107947561B (en) | 2018-01-09 | 2018-01-09 | Power switch circuit for controlling strong current by weak current |
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| Publication Number | Publication Date |
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| CN107947561A true CN107947561A (en) | 2018-04-20 |
| CN107947561B CN107947561B (en) | 2024-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810019860.8A Active CN107947561B (en) | 2018-01-09 | 2018-01-09 | Power switch circuit for controlling strong current by weak current |
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| Country | Link |
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| CN (1) | CN107947561B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111934534A (en) * | 2020-07-21 | 2020-11-13 | 深圳合作照明有限公司 | PFC power supply |
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| Publication number | Publication date |
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| CN107947561B (en) | 2024-06-14 |
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