CN107070214A - It is a kind of to change the voltage-stabilized power supply of voltage swing - Google Patents
It is a kind of to change the voltage-stabilized power supply of voltage swing Download PDFInfo
- Publication number
- CN107070214A CN107070214A CN201710217289.6A CN201710217289A CN107070214A CN 107070214 A CN107070214 A CN 107070214A CN 201710217289 A CN201710217289 A CN 201710217289A CN 107070214 A CN107070214 A CN 107070214A
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- resistance
- triode
- electric capacity
- diode
- voltage
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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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
It can change the voltage-stabilized power supply of voltage swing the invention discloses a kind of, including power circuit, power circuit includes transformer, first diode, second diode, first triode, second triode, 3rd triode, first resistor, second resistance, 3rd resistor, 4th resistance, 5th resistance, 6th resistance, first electric capacity and the second electric capacity, second resistance is swept resistance, power circuit is provided with two inputs and two output ends, the two ends of the first siding ring of the transformer as power circuit input, the emitter stage of first triode as power circuit an output end, the colelctor electrode of 3rd triode as power circuit another output end.By the present invention in that with potentiometer and the triode for possessing voltage regulation result, a kind of voltage can be provided the user in the adjustable voltage-stabilized power supply of certain limit, it is simple and practical.
Description
Technical field
The present invention relates to a kind of power supply, and in particular to a kind of to change the voltage-stabilized power supply of voltage swing.
Background technology
Continuing to develop and being had an optimistic view of by masses are consistent, all kinds of LED peripheries service product with LED illumination industry in recent years
Obtain very big development, such as outdoor LED dot matrix screen, computer backlight, commercial building decorative lightening system, without exception all
LED illumination is used, so the driving power supply of one of core as LED illumination quality is also each enterprise and rear to rise in recent years
The field being related to is fallen over each other in show, and LED power can be divided into two major classes by type of drive：Constant current mode and type voltage regulation driving.So-called perseverance
Flow type power supply refers to that under the loading condition of permission the electric current of output is constant, and electric current will not change with the change of load,
It is typically used in high-power LED product such as LED daylight lamp to illuminate, replaces the fields such as the LED spotlight of halogen tungsten lamp.And constant pressure type
Power supply refers to that under the loading condition of permission the voltage of output is constant, does not change with load and changes, is typically used in small
It is relatively more in terms of the LED modules of power, low-power LED guard rail lamp, wall lamp.In addition, the constant pressure source in daily life
It is that comparison is common, computer power supply, battery, dry cell etc. are all DC constant voltage power supplys, and 220V alternating currents, then is believed that
It is a kind of AC constant voltage power supply, because their output voltage is basically unchanged, does not change significantly with the size of output current.Reason
The constant voltage source internal resistance thought tends to be infinitely small, and voltage is steady state value, unrelated with external circuit and the electric current flowed through, and electric current can be with outer
Circuit variation.
In general, the voltage of traditional DC constant voltage power supply output is fixed, but with people's daily demand
Increase, it is desirable to have a kind of output voltage of voltage-stabilized power supply is adjustable, and with a range of regulated quantity.
The content of the invention
The technical problems to be solved by the invention are to overcome the deficiencies in the prior art to change voltage swing there is provided one kind
Voltage-stabilized power supply, it can provide the user a kind of voltage one by using potentiometer and the triode for possessing voltage regulation result
Determine the adjustable voltage-stabilized power supply of scope.
The present invention is achieved through the following technical solutions：
A kind of to change the voltage-stabilized power supply of voltage swing, including power circuit, the power circuit includes transformer, the
One diode, the second diode, the first triode, the second triode, the 3rd triode, first resistor, second resistance, the 3rd electricity
Resistance, the 4th resistance, the 5th resistance, the 6th resistance, the first electric capacity and the second electric capacity, the second resistance are swept resistance, power supply
Circuit is provided with two inputs and two output ends；The two ends of the first siding ring of the transformer are used as the defeated of power circuit
Enter end, one end of transformer secondary lateral coil is connected with the positive pole of the first diode, the other end of transformer secondary lateral coil and
The positive pole connection of second diode, the negative pole of the second diode is connected with the negative pole of the first diode, the secondary side line of transformer
The centre position of circle is provided with tap, and tap is connected with one end of the first electric capacity, the other end of the first electric capacity and the first diode
Negative pole connection, the second electric capacity is in parallel with the first electric capacity；The one end of the colelctor electrode of first triode simultaneously with first resistor
Connected with the negative pole of the first diode, the other end of first resistor simultaneously with one end of second resistance, one end of the 5th resistance, the
The emitter stage connection of the base stage of one triode and the 3rd triode, the other end of second resistance and one end of 3rd resistor are connected,
The other end of 3rd resistor is connected with one end of the 4th resistance and the base stage of the second diode simultaneously, and the other end of the 4th resistance is same
When be connected with the tap of transformer secondary lateral coil and the emitter stage of the second triode, the colelctor electrode of the second triode and the 6th electricity
One end connection of resistance, the other end of the 6th resistance simultaneously with the base stage of the 3rd triode and the 5th resistance is relative connects first resistor
Other end connection, the colelctor electrode of the 3rd triode is connected with the emitter stage of the second diode, the emitter stage work of the first triode
For an output end of power circuit, the colelctor electrode of the 3rd triode as power circuit another output end.Use this hair
When bright, the input termination 220V electric mains of power circuit, after transformer pressure-reducing, then by the first diode and second
Diode rectification, then by the first electric capacity and the second capacitor filtering, followed by base stage of the first resistor to the first triode
Power supply, makes after the first triode ON, the first triode ON, and voltage is by second resistance, 3rd resistor to the second triode
Base stage power, make the second triode ON, subsequent 3rd triode is also switched on, the first triode, the second triode at this moment
No longer change with the voltage of the emitter and collector of the 3rd triode, it functions as voltage-stabiliser tube, pass through the electricity of regulation second
The sliding tap of resistance, can obtain different stable output voltages, thus, by the present invention in that with potentiometer and possessing voltage stabilizing
The triode of effect, can provide the user a kind of voltage in the adjustable voltage-stabilized power supply of certain limit.
Further, in addition to first fuse and second fuse, one end of the first fuse and transformer
One end connection of first siding ring, the other end of first fuse is used as an input of power circuit, second fusing
One end of device is connected with the emitter stage of the first triode, the other end of second fuse as power circuit an output end.
First fuse and second fuse play overcurrent protection in a power, can avoid spike during because of city's electro-mechanical wave
The excessive electronic device burnt out in power circuit of electric current.
Further, in addition to the 3rd electric capacity and the 4th electric capacity, one end of the 3rd electric capacity and the hair of the first triode
Emitter-base bandgap grading is connected, and the other end of the 3rd electric capacity is connected with the colelctor electrode of the 3rd triode, and the 4th electric capacity is in parallel with the 3rd electric capacity.3rd
Electric capacity and the 4th electric capacity can again be filtered to the harmonic wave in circuit, improve the power supply quality of power supply.
The present invention compared with prior art, has the following advantages and advantages：1st, by the present invention in that using potentiometer
With the triode for possessing voltage regulation result, a kind of voltage can be provided the user in the adjustable voltage-stabilized power supply of certain limit, simply
It is practical；2nd, by setting first fuse and second fuse in a power, overcurrent protection can be played, can be effective
Avoid the excessive electronic device burnt out in power circuit of peak current during because of city's electro-mechanical wave；3rd, the first electric capacity and the second electric capacity pair
Harmonic wave in circuit is once filtered, and the harmonic wave in the 3rd electric capacity and the 4th capacitance on circuit is filtered again, Neng Gou great
The big power supply quality for improving power supply.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is schematic structural view of the invention.
Mark and corresponding parts title in accompanying drawing：
T-transformer, F1-first fuse, F2-second fuse, the triodes of Q1-first, the poles of Q2-the two or three
Pipe, the triodes of Q3-the 3rd, the diodes of D1-first, the diodes of D2-second, R1-first resistor, R2-second resistance,
The resistance of R3-3rd resistor, R4 the-the 4th, the resistance of R5-the 5th, the resistance of R6-the 6th, the electric capacity of C1-first, the electricity of C2-second
Hold, the electric capacity of C3-the 3rd, the electric capacity of C4-the 4th.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment and its explanation of the invention is only used for explaining the present invention, does not make
For limitation of the invention.
Embodiment
Such as Fig. 1, present invention offer is a kind of can to change the voltage-stabilized power supply of voltage swing, including power circuit, power circuit
Including transformer T, first fuse F1, second fuse F2, the first diode D1, the second diode D2, the first triode Q1,
Second triode Q2, the 3rd triode Q3, first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th electricity
It is slip to hinder R5, the 6th resistance R6, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3 and the 4th electric capacity C4, second resistance R2
Resistance, power circuit is provided with two inputs and two output ends.
One end of transformer T first siding ring is connected with first fuse F1 one end, and first fuse F1's is another
An input as power circuit is held, the other end of transformer T first siding ring is defeated as another of power circuit
Enter end, one end of transformer T second siding rings is connected with the first diode D1 positive pole, transformer T second siding rings it is another
End is connected with the second diode D2 positive pole, and the second diode D2 negative pole is connected with the first diode D1 negative pole, transformer T
The centre position of second siding ring be provided with tap, tap is connected with the first electric capacity C1 one end, and the first electric capacity C1's is another
End is connected with the first diode D1 negative pole, and the second electric capacity C2 is in parallel with the first electric capacity C1；First triode Q1 colelctor electrode is same
When be connected with first resistor R1 one end and the first diode D1 negative pole, the first resistor R1 other end is simultaneously and second resistance
R2 one end, the 5th resistance R5 one end, the first triode Q1 base stage and the 3rd triode Q3 emitter stage connection, the second electricity
The resistance R2 other end is connected with 3rd resistor R3 one end, the 3rd resistor R3 other end and meanwhile with the 4th resistance R4 one end and
Second diode Q2 base stage connection, the tap and second of the 4th resistance R4 other end simultaneously with transformer T second siding rings
Triode Q2 emitter stage connection, the second triode Q2 colelctor electrode is connected with the 6th resistance R6 one end, the 6th resistance R6's
The other end other end connection for connecting first resistor R1 simultaneously relative with the 3rd triode Q3 base stage and the 5th resistance R5, the 3rd
Triode Q3 colelctor electrode is connected with the second diode Q2 emitter stage, the first triode Q1 emitter stage simultaneously with the 3rd electric capacity
C3 one end and second fuse F2 one end connection, the 3rd electric capacity C3 other end are connected with the 3rd triode Q3 colelctor electrodes,
The second fuse F2 other end is as an output end of power circuit, and the colelctor electrode of the 3rd triode arrives as power circuit
Another output end, the 4th electric capacity C4 is in parallel with the 3rd electric capacity C3.
In the present embodiment, transformer T rated power is 100W, electrolysis electricity of the first electric capacity C1 from 3300uF/35V
Hold, the second electric capacity C2 and the 3rd electric capacity C3 are from 0.1uF ROHS, electrolysis electricity of the 4th electric capacity C4 from 470uF/35V
Hold, first resistor R1 resistance is 220 Ω, second resistance R2 resistance is 330k Ω, 3rd resistor R3, the 4th resistance R4, the
Five resistance R5 and the 6th resistance R6 resistance is 10k Ω, and the adjustable range of the output voltage of the present embodiment is 3.5V~25V.
Above-described embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. all should be included
Within protection scope of the present invention.
Claims (3)
1. a kind of can change the voltage-stabilized power supply of voltage swing, it is characterised in that including power circuit, the power circuit includes
Transformer (T), the first diode (D1), the second diode (D2), the first triode (Q1), the second triode (Q2), the three or three
Pole pipe (Q3), first resistor (R1), second resistance (R2), 3rd resistor (R3), the 4th resistance (R4), the 5th resistance (R5),
Six resistance (R6), the first electric capacity (C1) and the second electric capacity (C2), the second resistance (R2) are swept resistance, and power circuit is set
There are two inputs and two output ends；
The two ends of the first siding ring of the transformer (T) as power circuit input, transformer (T) second siding ring
One end is connected with the positive pole of the first diode (D1), the other end of transformer (T) second siding ring and the second diode (D2)
Positive pole is connected, and the negative pole of the second diode (D2) is connected with the negative pole of the first diode (D1), the second siding ring of transformer (T)
Centre position be provided with tap, tap is connected with the one end of the first electric capacity (C1), the other end and first of the first electric capacity (C1)
The negative pole connection of diode (D1), the second electric capacity (C2) is in parallel with the first electric capacity (C1)；
The colelctor electrode of first triode (Q1) one end simultaneously with first resistor (R1) and the negative pole of the first diode (D1)
Connection, the other end of first resistor (R1) is while the one end, the one or three pole of one end, the 5th resistance (R5) with second resistance (R2)
Manage the base stage of (Q1) and the emitter stage connection of the 3rd triode (Q3), the other end and the 3rd resistor (R3) of second resistance (R2)
One end is connected, and the other end of 3rd resistor (R3) connects with one end of the 4th resistance (R4) and the base stage of the second diode (Q2) simultaneously
Connect, the tap and the transmitting of the second triode (Q2) of the other end of the 4th resistance (R4) simultaneously with transformer (T) second siding ring
Pole is connected, and the colelctor electrode of the second triode (Q2) is connected with one end of the 6th resistance (R6), and the other end of the 6th resistance (R6) is same
The base stage of the triodes of Shi Yu tri- (Q3) and the other end connection of the relative connection first resistor (R1) of the 5th resistance (R5), the three or three
The colelctor electrode of pole pipe (Q3) is connected with the emitter stage of the second diode (Q2), and the emitter stage of the first triode (Q1) is used as power supply electricity
One output end on road, the colelctor electrode of the 3rd triode (Q3) as power circuit another output end.
A kind of it can change the voltage-stabilized power supply of voltage swing 2. according to claim 1, it is characterised in that also including first
Fuse (F1) and second fuse (F2), one end of the first fuse (F1) and the first siding ring of transformer (T)
One end is connected, the other end of first fuse (F1) as power circuit an input, the second fuse (F2)
One end is connected with the emitter stage of the first triode (Q1), and the other end of second fuse (F2) is exported as one of power circuit
End.
3. what a power required described in 1 a kind of can change the voltage-stabilized power supply of voltage swing, it is characterised in that also including the 3rd electric capacity
(C3) and the 4th electric capacity (C4), one end of the 3rd electric capacity (C3) is connected with the emitter stage of the first triode (Q1), the 3rd electricity
The other end for holding (C3) is connected with the colelctor electrode of the 3rd triode (Q3), and the 4th electric capacity (C4) is in parallel with the 3rd electric capacity (C3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710217289.6A CN107070214A (en) | 2017-04-05 | 2017-04-05 | It is a kind of to change the voltage-stabilized power supply of voltage swing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710217289.6A CN107070214A (en) | 2017-04-05 | 2017-04-05 | It is a kind of to change the voltage-stabilized power supply of voltage swing |
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| Publication Number | Publication Date |
|---|---|
| CN107070214A true CN107070214A (en) | 2017-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710217289.6A Pending CN107070214A (en) | 2017-04-05 | 2017-04-05 | It is a kind of to change the voltage-stabilized power supply of voltage swing |
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| Country | Link |
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| CN (1) | CN107070214A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108983628A (en) * | 2018-08-01 | 2018-12-11 | 合肥阅辞科技有限公司 | Intelligent appliance managing and control system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204179945U (en) * | 2014-10-30 | 2015-02-25 | 成都美益达医疗科技有限公司 | Blood centrifugal machine voltage-stabilized power supply circuit |
| CN204652259U (en) * | 2015-05-15 | 2015-09-16 | 深圳市中顺崎科技有限公司 | A kind of switching power circuit |
| CN205427683U (en) * | 2016-03-10 | 2016-08-03 | 吴家龙 | Intelligent direct -current stabilized power supply |
-
2017
- 2017-04-05 CN CN201710217289.6A patent/CN107070214A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204179945U (en) * | 2014-10-30 | 2015-02-25 | 成都美益达医疗科技有限公司 | Blood centrifugal machine voltage-stabilized power supply circuit |
| CN204652259U (en) * | 2015-05-15 | 2015-09-16 | 深圳市中顺崎科技有限公司 | A kind of switching power circuit |
| CN205427683U (en) * | 2016-03-10 | 2016-08-03 | 吴家龙 | Intelligent direct -current stabilized power supply |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108983628A (en) * | 2018-08-01 | 2018-12-11 | 合肥阅辞科技有限公司 | Intelligent appliance managing and control system |
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Application publication date: 20170818 |
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| RJ01 | Rejection of invention patent application after publication |