CN107733228A - A kind of adjustable voltage-stabilized power supply of output voltage - Google Patents
A kind of adjustable voltage-stabilized power supply of output voltage Download PDFInfo
- Publication number
- CN107733228A CN107733228A CN201711025647.XA CN201711025647A CN107733228A CN 107733228 A CN107733228 A CN 107733228A CN 201711025647 A CN201711025647 A CN 201711025647A CN 107733228 A CN107733228 A CN 107733228A
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- Prior art keywords
- electric capacity
- diode
- pole
- resistance
- triode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- 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
- H02M3/158—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 including plural semiconductor devices as final control devices for a single load
- H02M3/1584—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 including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal 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
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal 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
Abstract
The invention discloses a kind of adjustable voltage-stabilized power supply of output voltage, it is characterised in that：Mainly by constant-current source circuit, transformer T, diode rectifier U, three terminal regulator IC, triode VT1, light emitting diode VD, electric capacity C1, electric capacity C2, electric capacity C3, resistance R1, resistance R2, resistance R3, slide rheostat RP, diode D1 and voltage-regulator diode D2 compositions.The present invention is reasonable in design, moreover it is possible to adjusts output voltage, so that the present invention can be suitably used for different electronic products, while can also be adapted to promote the use to provide stable voltage with electric loading.
Description
Technical field
The present invention relates to a kind of power supply, and in particular to a kind of adjustable voltage-stabilized power supply of output voltage.
Background technology
With the development of science and technology, electronic technology is able to fast development, and electronics categories are increasingly abundanter, various each
The electronic product of sample is entered in the life of ordinary people so that daily life also be unable to do without electronic product.Electricity mostly
Sub- product needs external civil power, it is therefore desirable to uses power supply.It is big because various electronic products are not quite similar using voltage, therefore absolutely
The power supply of most electronic products can not share.
The content of the invention
, can be by adjusting voltage with expectation it is an object of the invention to provide a kind of adjustable voltage-stabilized power supply of output voltage
Mode makes power supply be applied to different electronic products.
The present invention is achieved through the following technical solutions：
A kind of adjustable voltage-stabilized power supply of output voltage, mainly by constant-current source circuit, transformer T, diode rectifier U, three
Hold voltage-stablizer IC, triode VT1, electric capacity C1, the P pole that positive pole and negative pole are connected with constant-current source circuit after resistance R1 with electricity
Light emitting diode VD, the P pole and triode VT1 colelctor electrode that appearance C1 positive pole is connected, N poles are connected with electric capacity C1 negative pole
It is connected, diode D1, the P pole that N poles are connected with three terminal regulator IC IN pins and three terminal regulator U ADJ pin phases
The voltage-regulator diode D2 that connection, N poles are connected with three terminal regulator U OUT pins, the resistance being in parallel with voltage-regulator diode D2
R3, is serially connected between three terminal regulator U ADJ pins and electric capacity C1 negative pole and control terminal is connected with electric capacity C1 negative pole
Slide rheostat RP, the resistance R2 being serially connected between triode VT1 base stage and emitter stage, the P of positive pole and voltage-regulator diode D2
The electric capacity C2 that pole is connected, negative pole is connected with electric capacity C1 negative pole, and positive pole are connected with triode VT1 base stage, born
The electric capacity C3 compositions that pole is connected with electric capacity C1 negative pole；The IN pins of the three terminal regulator U are connected with electric capacity C1 positive pole
Connect, its OUT pin is connected with triode VT1 base stage；An input of the diode rectifier U is with transformer T's
The non-same polarity of secondary inductance coil is connected, the Same Name of Ends phase of its another input and transformer T secondary inductance coil
Connection；The both ends composition power input of the primary side inductance coil of the transformer T, positive pole and the negative pole of the electric capacity C3 form
Output end；
The constant-current source circuit is then whole with diode by operational amplifier P1, operational amplifier P2, triode VT2, positive pole
Stream device U cathode output end is connected, the electric capacity C4 that negative pole is connected after resistance R5 with operational amplifier P1 negative input end,
One end is connected with operational amplifier P1 positive input terminal, the resistance R4 of other end ground connection, is serially connected in the negative of operational amplifier P1
Resistance R6 between input and operational amplifier P2 output end, positive pole are connected with operational amplifier P2 output end, born
The electric capacity C5 that pole is connected with operational amplifier P2 positive input terminal, positive pole is connected with operational amplifier P2 negative input end,
Output end of electric capacity C6, the P pole that negative pole is connected with triode VT2 base stage with operational amplifier P1 after resistance R7 is connected
Connect, the diode D3 that N poles are connected after resistance R8 with triode VT2 colelctor electrode, and N poles after resistance R9 with diode
The diode D4 that rectifier U cathode output end is connected, P poles are connected with triode VT2 emitter stage；The electric capacity C1's
Positive pole is connected with diode D3 N poles, and its negative pole is connected with diode D4 P poles.
Further, the three terminal regulator IC is LM317 type voltage-stablizers.
Further, the triode VT1 and triode VT2 is 2N3055 triodes.
Further, the diode rectifier U is the diode rectifier of four 1N4001 commutation diodes compositions.
In order to ensure effect, the operational amplifier P1 and operational amplifier P2 is that LM358 single supply general-purpose operations are put
Big device.
The present invention compared with prior art, has advantages below and beneficial effect：
The present invention be not only simple in structure and cost is relatively low, be also convenient for safeguarding.The present invention is reasonable in design, moreover it is possible to adjusts
Output voltage, so that the present invention can be suitably used for different electronic products, while can also be to provide voltage stably with electric loading.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is the structure chart of the constant-current source circuit of the present invention.
Embodiment
The present invention is described in further detail with reference to embodiment, but the implementation of the present invention is not limited to this.
Embodiment
As shown in Figure 1, 2, the adjustable voltage-stabilized power supply of output voltage of the invention, mainly by constant-current source circuit, transformer T,
Diode rectifier U, three terminal regulator IC, triode VT1, light emitting diode VD, electric capacity C1, electric capacity C2, electric capacity C3, resistance
R1, resistance R2, resistance R3, slide rheostat RP, diode D1 and voltage-regulator diode D2 are formed.Wherein, the light-emitting diodes
Pipe VD is used for showing the working condition of the present invention, the turn-on power when present invention works, and light emitting diode VD lights；Not work of the invention
Deenergization when making, light emitting diode VD extinguishes, and so as to be easy to user to observe, the light emitting diode VD in the present embodiment is used
BT201 types light emitting diodes is realized.
During connection, the positive pole of the electric capacity C1 is connected with negative pole with constant-current source circuit；The P of the light emitting diode VD
Positive pole of the pole with electric capacity C1 after resistance R1 is connected, and its N pole is connected with electric capacity C1 negative pole.The P poles of the diode D1
It is connected with triode VT1 colelctor electrode, its N pole is connected with three terminal regulator IC IN pins.The voltage-regulator diode D2
P poles be connected with three terminal regulator U ADJ pins, its N pole is connected with three terminal regulator U OUT pins.The resistance
R3 is in parallel with voltage-regulator diode D2, and the slide rheostat RP is serially connected in three terminal regulator U ADJ pins and bearing for electric capacity C1
Between pole and control terminal is connected with electric capacity C1 negative pole, the resistance R2 be serially connected in triode VT1 base stage and emitter stage it
Between.The positive pole of the electric capacity C2 is connected with voltage-regulator diode D2 P poles, and its negative pole is connected with electric capacity C1 negative pole.It is described
Electric capacity C3 positive pole is connected with triode VT1 base stage, and its negative pole is connected with electric capacity C1 negative pole.
Meanwhile the IN pins of the three terminal regulator U are connected with electric capacity C1 positive pole, its OUT pin and triode VT1
Base stage be connected.The non-same polarity phase of an input and transformer T secondary inductance coil of the diode rectifier U
Connection, its another input are connected with the Same Name of Ends of transformer T secondary inductance coil, its cathode output end ground connection.Institute
State the both ends composition power input and external mains supply of transformer T primary side inductance coil, the positive pole of the electric capacity C3 with
Negative pole forms output end and external uses electric loading.
As shown in Fig. 2 the constant-current source circuit is then by operational amplifier P1, operational amplifier P2, triode VT2, electric capacity
C4, electric capacity C5, electric capacity C6, resistance R4~R9, diode D3 and diode D4 are formed.In order to ensure the actual use of the present invention
Effect, the triode VT2 realize that diode D3 and diode D4 then uses 1N4001 rectifications using 2N3055 triodes
Diode is realized.The resistance of the electric capacity C4 is that 220 μ F, electric capacity C5 and electric capacity C6 resistance are 470 μ F.The resistance R4
Resistance be that 1k Ω, resistance R5 and resistance R6 resistance is that 600 Ω, resistance R7 and resistance R8 resistance is 800 Ω, resistance
R9 resistance is 1.2k Ω.The operational amplifier P1 and operational amplifier P2 is amplified using LM358 single supplies general-purpose operation
Device is realized.
During connection, the positive pole of the electric capacity C4 is connected with diode rectifier U cathode output end, and its negative pole is through resistance
Negative input end after R5 with operational amplifier P1 is connected.One end of the resistance R4 and operational amplifier P1 positive input terminal phase
Connection, its other end ground connection；The resistance R6 is serially connected in operational amplifier P1 negative input end and operational amplifier P2 output
Between end.The positive pole of the electric capacity C5 is connected with operational amplifier P2 output end, and its negative pole and operational amplifier P2 are just
Input is connected.The positive pole of the electric capacity C6 is connected with operational amplifier P2 negative input end, its negative pole and triode VT2
Base stage be connected.Output end of the P poles of the diode D3 with operational amplifier P1 after resistance R7 is connected, its N pole warp
Colelctor electrode after resistance R8 with triode VT2 is connected.The N poles of the diode D4 after resistance R9 with diode rectifier U
Cathode output end be connected, its P pole is connected with triode VT2 emitter stage.The positive pole of the electric capacity C1 and diode D3
N poles be connected, its negative pole is connected with diode D4 P poles.
In use, the transformer T is depressured to civil power, in the present embodiment, transformer T uses EF20 step-down transformers
To realize, line voltage can be reduced to 36V, can be according to being needed that suitable transformer T can be selected with the electricity consumption of electric loading during use.
The diode rectifier U is then used for rectification, and diode rectifier U is the diode of four 1N4001 commutation diodes compositions
Rectifier.The constant-current source circuit can be handled the electric current inputted through diode rectifier U, so that it is guaranteed that the present invention possesses
Constant operating current, avoids it from producing electromagnetic interference signal during work, greatly improves the stabilization of the present invention
Property.The electric capacity C1 is used to filter, and electric capacity C1 capacitance is 1000 μ F.The resistance R1 is used to carry out light emitting diode VD
Partial pressure current limliting, so as to protect light emitting diode VD to be damaged by high current, resistance R1 resistance is 5.1k Ω.
The three terminal regulator IC and diode D1, voltage-regulator diode D2 can carry out voltage stabilizing processing, to ensure to bear for electricity consumption
Carry and stable power supply is provided.Wherein, diode D1 is protection diode, and diode D1 can prevent defeated after being combined with triode VT1
Enter short circuit and damage three terminal regulator IC.The three terminal regulator IC is LM317 type voltage-stablizers, and diode D1 is 1N4007 rectifications
Diode, voltage-regulator diode D2 are 2CW105 voltage-regulator diodes.Meanwhile triode VT1 and resistance R2 circuit can then be formed it is slow
The effect of punching, triode VT1 realize that resistance R2 resistance is then 1.2k Ω using 2N3055 triodes.
The present invention is become by the i.e. adjustable output voltage values of the resistance for adjusting slide rheostat RP, the resistance R3 with sliding
Hinder the relation that device RP forms partial pressure, the output voltage range in the present embodiment be 1.5~30V, i.e., the present invention is electric available for work
Multiple different electric loadings for being pressed between 1.5~30V, it is necessary to using other voltage ranges can be by changing transformer
T is realized.The resistance of resistance R3 in the present embodiment is 250 Ω, and slide rheostat RP resistance is 0~1.5k Ω, meanwhile, institute
The capacitance for stating electric capacity C2 is 120 μ F.The electric capacity C3, which is used to export, to be filtered, and its capacitance is 220 μ F.
The present invention be not only simple in structure and cost is relatively low, be also convenient for safeguarding.The present invention is reasonable in design, moreover it is possible to adjusts
Output voltage, so that the present invention can be suitably used for different electronic products, while can also be to provide voltage stably with electric loading.
As described above, it can preferably realize the present invention.
Claims (5)
- A kind of 1. adjustable voltage-stabilized power supply of output voltage, it is characterised in that：It is mainly whole by constant-current source circuit, transformer T, diode Device U, three terminal regulator IC, triode VT1 are flowed, electric capacity C1, the P poles that positive pole and negative pole are connected with constant-current source circuit are through resistance It is connected after R1 with electric capacity C1 positive pole, light emitting diode VD, P pole and the triode VT1 that N poles are connected with electric capacity C1 negative pole Colelctor electrode be connected, diode D1, P pole that N poles are connected with three terminal regulator IC IN pins is with three terminal regulator U's The voltage-regulator diode D2 that ADJ pins are connected, N poles are connected with three terminal regulator U OUT pins, with voltage-regulator diode D2 phases Resistance R3 in parallel, be serially connected between three terminal regulator U ADJ pins and electric capacity C1 negative pole and control terminal and electric capacity C1 it is negative The slide rheostat RP that pole is connected, the resistance R2 being serially connected between triode VT1 base stage and emitter stage, positive pole and voltage stabilizing two The electric capacity C2 that pole pipe D2 P poles are connected, negative pole is connected with electric capacity C1 negative pole, and the base stage of positive pole and triode VT1 It is connected, the electric capacity C3 compositions that negative pole is connected with electric capacity C1 negative pole；The IN pins of the three terminal regulator U are with electric capacity C1's Positive pole is connected, and its OUT pin is connected with triode VT1 base stage；An input of the diode rectifier U is with becoming The non-same polarity of depressor T secondary inductance coil is connected, and its another input is same with transformer T secondary inductance coil Name end is connected；The both ends composition power input of the primary side inductance coil of the transformer T, the positive pole of the electric capacity C3 is with bearing Pole forms output end；The constant-current source circuit is then by operational amplifier P1, operational amplifier P2, triode VT2, positive pole and diode rectifier U Cathode output end be connected, the electric capacity C4 that negative pole is connected after resistance R5 with operational amplifier P1 negative input end, one end It is connected with operational amplifier P1 positive input terminal, the resistance R4 of other end ground connection, is serially connected in operational amplifier P1 negative input Hold operational amplifier P2 output end between resistance R6, positive pole is connected with operational amplifier P2 output end, negative pole and The electric capacity C5 that operational amplifier P2 positive input terminal is connected, positive pole is connected with operational amplifier P2 negative input end, negative pole Electric capacity C6, the P pole being connected with triode VT2 base stage is connected after resistance R7 with operational amplifier P1 output end, N poles The diode D3 being connected after resistance R8 with triode VT2 colelctor electrode, and N poles after resistance R9 with diode rectifier The diode D4 that U cathode output end is connected, P poles are connected with triode VT2 emitter stage；The positive pole of the electric capacity C1 with Diode D3 N poles are connected, and its negative pole is connected with diode D4 P poles.
- A kind of 2. adjustable voltage-stabilized power supply of output voltage according to claim 1, it is characterised in that：The three terminal regulator IC is LM317 type voltage-stablizers.
- A kind of 3. adjustable voltage-stabilized power supply of output voltage according to claim 1, it is characterised in that：The triode VT1 It is 2N3055 triodes with triode VT2.
- A kind of 4. adjustable voltage-stabilized power supply of output voltage according to claim 1, it is characterised in that：The diode rectification Device U is the diode rectifier of four 1N4001 commutation diodes compositions.
- A kind of 5. simple type emergency light circuit according to claim 1, it is characterised in that：The operational amplifier P1 and fortune It is LM358 single supply general-purpose operation amplifiers to calculate amplifier P2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711025647.XA CN107733228A (en) | 2017-10-27 | 2017-10-27 | A kind of adjustable voltage-stabilized power supply of output voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711025647.XA CN107733228A (en) | 2017-10-27 | 2017-10-27 | A kind of adjustable voltage-stabilized power supply of output voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107733228A true CN107733228A (en) | 2018-02-23 |
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ID=61202775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711025647.XA Pending CN107733228A (en) | 2017-10-27 | 2017-10-27 | A kind of adjustable voltage-stabilized power supply of output voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107733228A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112200999A (en) * | 2020-08-26 | 2021-01-08 | 南京坤农信息技术有限公司 | Fireproof alarm system based on Internet of things and control method thereof |
-
2017
- 2017-10-27 CN CN201711025647.XA patent/CN107733228A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112200999A (en) * | 2020-08-26 | 2021-01-08 | 南京坤农信息技术有限公司 | Fireproof alarm system based on Internet of things and control method thereof |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180223 |
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| WD01 | Invention patent application deemed withdrawn after publication |