CN109407809A - Computer 5V power supply - Google Patents
Computer 5V power supply Download PDFInfo
- Publication number
- CN109407809A CN109407809A CN201811103563.8A CN201811103563A CN109407809A CN 109407809 A CN109407809 A CN 109407809A CN 201811103563 A CN201811103563 A CN 201811103563A CN 109407809 A CN109407809 A CN 109407809A
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- resistance
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- triode
- voltage
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
A kind of computer 5V power supply provided by the invention, including input protection circuit, output circuit, the first voltage regulator circuit and the second voltage regulator circuit；The input terminal of the input protection circuit and the 5V output end of power source of host computer connect; the output end of the input protection circuit is connect with the input terminal of the first voltage regulator circuit; the output end of first voltage regulator circuit is connect with the input terminal of the second voltage regulator circuit, and the output end of the second voltage regulator circuit and load connect；The input terminal of the output circuit and the output end of input protection circuit connect, and the output end of the output circuit is connect with the output end of the second voltage regulator circuit；Can the 5V direct current to power source of host computer output end detect, and steady pressure treatment again is carried out according to testing result, so as to effectively guarantee finally to be transmitted to the electrical safety of power inside equipment and external equipment.
Description
Technical field
The present invention relates to a kind of computer power supply more particularly to a kind of computer 5V power supplies.
Background technique
In a computer, computer power supply is used to provide work electricity consumption to the electrical equipment of entire main frame, including
The direct currents such as 9V, 5V and 3.3V, in the prior art, main frame directly provide these direct currents, still, these direct currents
Often unstable, especially 5V direct current causes USB interface etc. that cannot effectively work, for example cannot drive external hard drive, this is
Due to computer host power supply itself is unstable, there is fluctuation in 5V direct current, when being lower than 5V, then cannot drive external set
It is standby, after being higher than 5V, it will there are 5V electrical equipment inside scaling loss and external equipments.
Therefore, in order to solve the above-mentioned technical problem, need to propose a kind of new computer 5V power supply.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of computer 5V power supply, it can be to power source of host computer
The 5V direct current of output end is detected, and carries out steady pressure treatment again according to testing result, so as to effectively guarantee most
It is transmitted to the electrical safety of power inside equipment and external equipment eventually.
A kind of computer 5V power supply provided by the invention, including input protection circuit, output circuit, the first pressure stabilizing electricity
Road and the second voltage regulator circuit；
The input terminal of the input protection circuit and the 5V output end of power source of host computer connect, the input protection electricity
The output end on road is connect with the input terminal of the first voltage regulator circuit, the output end of first voltage regulator circuit and the second voltage regulator circuit
Input terminal connection, the output end of the second voltage regulator circuit and load connect；
The output end of the input terminal of the output circuit and input protection circuit connects, the output end of the output circuit with
The output end of second voltage regulator circuit connects.
Further, first voltage regulator circuit include resistance R2, adjustable resistance RT, controllable accurate source of stable pressure U2, resistance R3,
Resistance R5, resistance R6, resistance R7, amplifier U3, resistance R8, triode Q2, capacitor C2, voltage-stabiliser tube DW3 and voltage-stabiliser tube DW2；
Input terminal of the collector of the triode Q2 as the first voltage regulator circuit, the collector of triode Q2 pass through resistance
It is grounded after R2 and adjustable resistance RT series connection, the points of common connection between resistance R2 and adjustable resistance RT and controllable accurate source of stable pressure U2
Control electrode connection, the plus earth of controllable accurate source of stable pressure U2, the cathode of controllable accurate source of stable pressure U2 passes through resistance R3 and three
The collector of pole pipe Q2 connects, and the cathode of controllable accurate source of stable pressure is connect with the in-phase end of amplifier U3, the collector of triode Q2
By being grounded after resistance R5 and resistance R6 series connection, the reverse side of the points of common connection between resistance R5 and resistance R6 and amplifier U3 connect
It connects, the in-phase end of amplifier U3 is connect with output end by resistance R7；
The base stage of output end of the emitter of triode Q2 as the first voltage regulator circuit, triode Q2 passes through resistance R8 and electricity
Hold one end connection of C2, the other end ground connection of capacitor C2, the output end of amplifier U3 is connected to the public affairs between resistance R8 and capacitor C2
Tie point, the points of common connection between resistance R8 and capacitor C2 are connect with the cathode of voltage-stabiliser tube DW2 altogether, the anode of voltage-stabiliser tube DW2
Ground connection, the cathode of voltage-stabiliser tube DW3 connect the emitter of triode Q2, and the anode of voltage-stabiliser tube DW3 is connect with the cathode of voltage-stabiliser tube DW2.
Further, the input protection circuit includes amplifier U1, voltage-stabiliser tube DW1, resistance R1, buzzer SP, silicon-controlled Q1
And capacitor C1；
The anode of amplifier U1 is connect with the 5V output end of power source of host computer, and the reverse side of amplifier U1 is directly and output end
Emitter follower is connected and composed, the output end of amplifier U1 is connect with the cathode of voltage-stabiliser tube DW1, and the anode of voltage-stabiliser tube DW1 passes through electricity
R1 ground connection is hindered, the anode of voltage-stabiliser tube DW1 is connect with the anode of buzzer SP, and the cathode ground connection of buzzer SP, silicon-controlled Q1 is just
Pole is connected to the output end of amplifier U1, the cathode ground connection of silicon-controlled Q1, and the control electrode of silicon-controlled Q1 is being connected to voltage-stabiliser tube DW1 just
The output end of pole, amplifier U1 is grounded by capacitor C1, and the points of common connection between amplifier U1 and capacitor C1 is as input protection electricity
The output end on road.
Further, the output circuit includes resistance R4, capacitor C5, triode Q3 and triode Q4；
The collector of the triode Q3 and the output end of input protection circuit connect, the emitter of triode Q3 and second
The output end of voltage regulator circuit connects, and the base stage of triode Q3 is connect by resistance R4 with collector, and the base stage of triode 3 passes through electricity
Hold C5 ground connection, the base stage of triode Q3 is connect with the collector of triode Q4, the emitter ground connection of triode Q4, triode Q4's
Base stage is connected to the output end of amplifier U3.
Further, second voltage regulator circuit is LM2596 chip.
Beneficial effects of the present invention: by means of the invention it is possible to which the 5V direct current to power source of host computer output end carries out
Detection, and steady pressure treatment again is carried out according to testing result, so as to effectively guarantee finally to be transmitted to power inside equipment
And the electrical safety of external equipment.
Detailed description of the invention
The invention will be further described with reference to the accompanying drawings and examples:
Fig. 1 is circuit diagram of the invention.
Specific embodiment
Fig. 1 is circuit diagram of the invention, makes further description to the present invention below in conjunction with the figure:
A kind of computer 5V power supply provided by the invention, including input protection circuit, output circuit, the first pressure stabilizing electricity
Road and the second voltage regulator circuit；Wherein, second voltage regulator circuit is LM2596 chip and its peripheral circuit；
The input terminal of the input protection circuit and the 5V output end of power source of host computer connect, the input protection electricity
The output end on road is connect with the input terminal of the first voltage regulator circuit, the output end of first voltage regulator circuit and the second voltage regulator circuit
Input terminal connection, the output end of the second voltage regulator circuit and load connect；
The output end of the input terminal of the output circuit and input protection circuit connects, the output end of the output circuit with
The output end of second voltage regulator circuit connects, by above structure, can 5V direct current to power source of host computer output end into
Row detection, and steady pressure treatment again is carried out according to testing result, so as to effectively guarantee that being finally transmitted to power inside sets
Standby and external equipment electrical safety.
In the present embodiment, first voltage regulator circuit includes resistance R2, adjustable resistance RT, controllable accurate source of stable pressure U2, electricity
Hinder R3, resistance R5, resistance R6, resistance R7, amplifier U3, resistance R8, triode Q2, capacitor C2, voltage-stabiliser tube DW3 and voltage-stabiliser tube
DW2；
Input terminal of the collector of the triode Q2 as the first voltage regulator circuit, the collector of triode Q2 pass through resistance
It is grounded after R2 and adjustable resistance RT series connection, the points of common connection between resistance R2 and adjustable resistance RT and controllable accurate source of stable pressure U2
Control electrode connection, the plus earth of controllable accurate source of stable pressure U2, the cathode of controllable accurate source of stable pressure U2 passes through resistance R3 and three
The collector of pole pipe Q2 connects, and the cathode of controllable accurate source of stable pressure is connect with the in-phase end of amplifier U3, the collector of triode Q2
By being grounded after resistance R5 and resistance R6 series connection, the reverse side of the points of common connection between resistance R5 and resistance R6 and amplifier U3 connect
It connects, the in-phase end of amplifier U3 is connect with output end by resistance R7；
The base stage of output end of the emitter of triode Q2 as the first voltage regulator circuit, triode Q2 passes through resistance R8 and electricity
Hold one end connection of C2, the other end ground connection of capacitor C2, the output end of amplifier U3 is connected to the public affairs between resistance R8 and capacitor C2
Tie point, the points of common connection between resistance R8 and capacitor C2 are connect with the cathode of voltage-stabiliser tube DW2 altogether, the anode of voltage-stabiliser tube DW2
Ground connection, the cathode of voltage-stabiliser tube DW3 connect the emitter of triode Q2, and the anode of voltage-stabiliser tube DW3 is connect with the cathode of voltage-stabiliser tube DW2.
In the present embodiment, the input protection circuit includes amplifier U1, voltage-stabiliser tube DW1, resistance R1, buzzer SP, controllable
Silicon Q1 and capacitor C1；
The anode of amplifier U1 is connect with the 5V output end of power source of host computer, and the reverse side of amplifier U1 is directly and output end
Emitter follower is connected and composed, the output end of amplifier U1 is connect with the cathode of voltage-stabiliser tube DW1, and the anode of voltage-stabiliser tube DW1 passes through electricity
R1 ground connection is hindered, the anode of voltage-stabiliser tube DW1 is connect with the anode of buzzer SP, and the cathode ground connection of buzzer SP, silicon-controlled Q1 is just
Pole is connected to the output end of amplifier U1, the cathode ground connection of silicon-controlled Q1, and the control electrode of silicon-controlled Q1 is being connected to voltage-stabiliser tube DW1 just
The output end of pole, amplifier U1 is grounded by capacitor C1, and the points of common connection between amplifier U1 and capacitor C1 is as input protection electricity
The output end on road.
In the present embodiment, the output circuit includes resistance R4, capacitor C5, triode Q3 and triode Q4；
The collector of the triode Q3 and the output end of input protection circuit connect, the emitter of triode Q3 and second
The output end of voltage regulator circuit connects, and the base stage of triode Q3 is connect by resistance R4 with collector, and the base stage of triode 3 passes through electricity
Hold C5 ground connection, the base stage of triode Q3 is connect with the collector of triode Q4, the emitter ground connection of triode Q4, triode Q4's
Base stage is connected to the output end of amplifier U3.
The working principle of the invention is described in detail further below:
After the 5V DC supply input of power source of host computer, amplifier detect current voltage and with controllable accurate source of stable pressure
The reference voltage of output compares, if equal, amplifier U3 exports low level, triode Q2 cut-off and triode Q4 cut-off,
Triode Q3 is connected at this time, so that direct current is supplied directly to electrical equipment, the first voltage regulator circuit and the second pressure stabilizing are electric at this time
Road does not work；
When the voltage of amplifier reverse side is higher or lower than setting voltage, then amplifier U3 exports high level, and triode Q2 is led
It passes to and triode Q4 conducting, triode Q3 ends, the direct current inputted at this time will be electric by triode Q2 and voltage-stabiliser tube D3
Pressure is stablized in 6-8V, although when input voltage is lower than 5V, it, equally can be by direct current by the pressure stabilization function that follows of triode Q2
Electricity is stablized in 6-8V, then carries out steady pressure treatment by the second voltage regulator circuit, exports stable 5V direct current；
When host power supply break down be output voltage be higher than safety value after, at this point, voltage-stabiliser tube DW1 be connected, buzzing
Device work alarm, and silicon-controlled Q1 is connected, since the impedance of silicon-controlled Q1 is minimum, so that the circuit of rear end is in short circuit
State, to be protected to back-end circuit and electrical equipment.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (5)
1. a kind of computer 5V power supply, it is characterised in that: including input protection circuit, output circuit, the first voltage regulator circuit
And second voltage regulator circuit；
The input terminal of the input protection circuit and the 5V output end of power source of host computer connect, the input protection circuit
Output end is connect with the input terminal of the first voltage regulator circuit, the input of the output end and the second voltage regulator circuit of first voltage regulator circuit
End connection, the output end of the second voltage regulator circuit and load connect；
The input terminal of the output circuit and the output end of input protection circuit connect, the output end of the output circuit and second
The output end of voltage regulator circuit connects.
2. computer 5V power supply according to claim 1, it is characterised in that: first voltage regulator circuit includes resistance
R2, adjustable resistance RT, controllable accurate source of stable pressure U2, resistance R3, resistance R5, resistance R6, resistance R7, amplifier U3, resistance R8, three poles
Pipe Q2, capacitor C2, voltage-stabiliser tube DW3 and voltage-stabiliser tube DW2；
Input terminal of the collector of the triode Q2 as the first voltage regulator circuit, the collector of triode Q2 by resistance R2 and
It is grounded after adjustable resistance RT series connection, the control of the points of common connection between resistance R2 and adjustable resistance RT and controllable accurate source of stable pressure U2
Pole connection processed, the cathode of the plus earth of controllable accurate source of stable pressure U2, controllable accurate source of stable pressure U2 pass through resistance R3 and triode
The collector of Q2 connects, and the cathode of controllable accurate source of stable pressure is connect with the in-phase end of amplifier U3, and the collector of triode Q2 passes through
It being grounded after resistance R5 and resistance R6 series connection, the points of common connection between resistance R5 and resistance R6 is connect with the reverse side of amplifier U3,
The in-phase end of amplifier U3 is connect with output end by resistance R7；
The base stage of output end of the emitter of triode Q2 as the first voltage regulator circuit, triode Q2 passes through resistance R8 and capacitor C2
One end connection, the other end ground connection of capacitor C2, the output end of amplifier U3 is connected to the public company between resistance R8 and capacitor C2
Contact, the points of common connection between resistance R8 and capacitor C2 are connect with the cathode of voltage-stabiliser tube DW2, the plus earth of voltage-stabiliser tube DW2,
The cathode of voltage-stabiliser tube DW3 connects the emitter of triode Q2, and the anode of voltage-stabiliser tube DW3 is connect with the cathode of voltage-stabiliser tube DW2.
3. computer 5V power supply according to claim 2, it is characterised in that: the input protection circuit includes amplifier
U1, voltage-stabiliser tube DW1, resistance R1, buzzer SP, silicon-controlled Q1 and capacitor C1；
The anode of amplifier U1 is connect with the 5V output end of power source of host computer, and the reverse side of amplifier U1 is directly connect with output end
Emitter follower is constituted, the output end of amplifier U1 is connect with the cathode of voltage-stabiliser tube DW1, and the anode of voltage-stabiliser tube DW1 passes through resistance R1
Ground connection, the anode of voltage-stabiliser tube DW1 are connect with the anode of buzzer SP, and the cathode ground connection of buzzer SP, the anode of silicon-controlled Q1 is even
It is connected to the output end of amplifier U1, the cathode ground connection of silicon-controlled Q1, the control electrode of silicon-controlled Q1 is connected to the anode of voltage-stabiliser tube DW1,
The output end of amplifier U1 is grounded by capacitor C1, and the points of common connection between amplifier U1 and capacitor C1 is as input protection circuit
Output end.
4. computer 5V power supply according to claim 2, it is characterised in that: the output circuit includes resistance R4, electricity
Hold C5, triode Q3 and triode Q4；
The collector of the triode Q3 and the output end of input protection circuit connect, the emitter of triode Q3 and the second pressure stabilizing
The output end of circuit connects, and the base stage of triode Q3 is connect by resistance R4 with collector, and the base stage of triode 3 passes through capacitor C5
Ground connection, the base stage of triode Q3 are connect with the collector of triode Q4, the emitter ground connection of triode Q4, the base stage of triode Q4
It is connected to the output end of amplifier U3.
5. computer 5V power supply according to claim 1, it is characterised in that: second voltage regulator circuit is LM2596 core
Piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811103563.8A CN109407809A (en) | 2018-09-20 | 2018-09-20 | Computer 5V power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811103563.8A CN109407809A (en) | 2018-09-20 | 2018-09-20 | Computer 5V power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109407809A true CN109407809A (en) | 2019-03-01 |
Family
ID=65466159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811103563.8A Pending CN109407809A (en) | 2018-09-20 | 2018-09-20 | Computer 5V power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109407809A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58112465A (en) * | 1981-12-26 | 1983-07-04 | Toshiba Corp | Switching regulator |
| CN103199392A (en) * | 2013-04-10 | 2013-07-10 | 卫斌鹏 | Alternating current socket with overvoltage protection |
| CN203352465U (en) * | 2013-08-02 | 2013-12-18 | 济南新吉纳远程测控股份有限公司 | DC stabilized power supply suitable for oil field and oil well remote measurement and control system |
| CN205620504U (en) * | 2016-04-19 | 2016-10-05 | 国网辽宁省电力有限公司鞍山供电公司 | 10 passive warning monitoring arrangement of kilovolt arrester insulation breakdown |
| US20160372972A1 (en) * | 2015-01-26 | 2016-12-22 | Guangzhou Rising Dragon Electronics & Plastic Technology Co., Ltd. | Method of wireless transmission of electricity |
| CN205983382U (en) * | 2016-06-28 | 2017-02-22 | 浪潮集团有限公司 | Carrier -borne notebook computer power circuit board suitable for wide pressure is supplied power |
| CN207459997U (en) * | 2017-09-15 | 2018-06-05 | 重庆市智权之路科技有限公司 | For the dual regulator circuit and intelligent toy of intelligent toy |
-
2018
- 2018-09-20 CN CN201811103563.8A patent/CN109407809A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58112465A (en) * | 1981-12-26 | 1983-07-04 | Toshiba Corp | Switching regulator |
| CN103199392A (en) * | 2013-04-10 | 2013-07-10 | 卫斌鹏 | Alternating current socket with overvoltage protection |
| CN203352465U (en) * | 2013-08-02 | 2013-12-18 | 济南新吉纳远程测控股份有限公司 | DC stabilized power supply suitable for oil field and oil well remote measurement and control system |
| US20160372972A1 (en) * | 2015-01-26 | 2016-12-22 | Guangzhou Rising Dragon Electronics & Plastic Technology Co., Ltd. | Method of wireless transmission of electricity |
| CN205620504U (en) * | 2016-04-19 | 2016-10-05 | 国网辽宁省电力有限公司鞍山供电公司 | 10 passive warning monitoring arrangement of kilovolt arrester insulation breakdown |
| CN205983382U (en) * | 2016-06-28 | 2017-02-22 | 浪潮集团有限公司 | Carrier -borne notebook computer power circuit board suitable for wide pressure is supplied power |
| CN207459997U (en) * | 2017-09-15 | 2018-06-05 | 重庆市智权之路科技有限公司 | For the dual regulator circuit and intelligent toy of intelligent toy |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190301 |