CN206195636U - Adjustable secondary filter type constant voltage power supply of voltage based on compare amplifier circuit - Google Patents
Adjustable secondary filter type constant voltage power supply of voltage based on compare amplifier circuit Download PDFInfo
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- CN206195636U CN206195636U CN201621136037.8U CN201621136037U CN206195636U CN 206195636 U CN206195636 U CN 206195636U CN 201621136037 U CN201621136037 U CN 201621136037U CN 206195636 U CN206195636 U CN 206195636U
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Abstract
The utility model discloses an adjustable secondary filter type constant voltage power supply of voltage based on compare amplifier circuit, its characterized in that: mainly by transformer T, diode rectifier U, operational amplifier P, three terminal regulator IC, triode VT, emitting diode VD, inductance L, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, slide rheostat RP, diode D1, diode D2 and zener diode D3 constitute. The utility model has the advantages of reasonable design, can also regulated output voltage, thus make the utility model discloses different electronic products can be be applicable to, can also wide use be fit for for provide stable voltage with the electric loading simultaneously.
Description
Technical field
The utility model is related to a kind of power supply, and in particular to a kind of based on the secondary filter of voltage adjustable for comparing amplifying circuit
Wave mode voltage-stabilized power supply.
Background technology
With the development of science and technology, electronic technology is able to fast development, and electronics categories increasingly enrich, various each
The electronic product of sample is entered into the life of ordinary people so that daily life also be unable to do without electronic product.It is mostly electric
The sub- external civil power of product needed, it is therefore desirable to use power supply.It is because various electronic products are not quite similar using voltage therefore big absolutely
The power supply of most electronic products can not be shared.
Utility model content
The purpose of this utility model is to provide a kind of steady based on the voltage adjustable secondary filtering type for comparing amplifying circuit
Voltage source, to expect power supply can be made to be applied to different electronic products by way of adjusting voltage.
The utility model is achieved through the following technical solutions：
It is a kind of based on the voltage adjustable secondary filtering type voltage-stabilized power supply for comparing amplifying circuit, mainly by transformer T, two poles
Pipe rectifier U, operational amplifier P, three terminal regulator IC, triode VT, the cathode output end phase of positive pole and diode rectifier U
Connection, the electric capacity C1 that is connected with the cathode output end of diode rectifier U of negative pole, positive pole after inductance L with electric capacity C1 just
Electric capacity C2, the P pole that pole is connected, negative pole is connected with the negative pole of electric capacity C1 is connected with the positive input terminal of operational amplifier P, N
The diode D1 that pole is connected with the IN pins of three terminal regulator IC, positive pole is connected with the N poles of diode D1, negative pole and computing
The electric capacity C3 that the output end of amplifier P is connected, is serially connected between the negative pole of the negative input end of operational amplifier P and electric capacity C1
Resistance R1, is serially connected in positive pole of resistance R2, the P pole between the N poles of diode D1 and P poles with electric capacity C3 after resistance R3 and is connected
Connect, light emitting diode VD, the P pole that N poles are connected with the negative pole of electric capacity C1 is connected with the colelctor electrode of triode VT, N poles and three
Diode D1, the P pole that the IN pins of end voltage-stablizer IC are connected is connected with the ADJ pins of three terminal regulator U, N poles and three ends
The voltage-regulator diode D3 that the OUT pins of voltage-stablizer U are connected, the resistance R5 being in parallel with voltage-regulator diode D3, is serially connected in three ends
Between the ADJ pins of voltage-stablizer U and the negative pole of electric capacity C1 and the slide rheostat RP that is connected with the negative pole of electric capacity C1 of control end,
Be serially connected in the resistance R4 between the base stage of triode VT and emitter stage, positive pole is connected with the P poles of voltage-regulator diode D3, negative pole with
The electric capacity C4 that the negative pole of electric capacity C1 is connected, and positive pole be connected with the base stage of triode VT, the negative pole of negative pole and electric capacity C1
The electric capacity C5 compositions being connected；The positive input terminal of the operational amplifier P is connected with the positive pole of electric capacity C2, three terminal regulator U
OUT pins be connected with the base stage of triode VT；One input of the diode rectifier U and the secondary of transformer T
The non-same polarity of inductance coil is connected, and its another input is connected with the Same Name of Ends of the secondary inductance coil of transformer T；
The two ends composition power input of the primary side inductance coil of the transformer T, positive pole and the negative pole of the electric capacity C5 constitute output
End.
Further, the operational amplifier P is LM324 operational amplifiers.
Further, the three terminal regulator IC is LM317 type voltage-stablizers.
Further, the triode VT is 2N3055 triodes.
In order to ensure effect, the diode rectifier U is four diode rectifications of 1N4001 commutation diodes composition
Device.
The utility model compared with prior art, with advantages below and beneficial effect：
(1) it is of the present utility model to be not only simple in structure and cost is relatively low, it is also convenient for safeguarding.The utility model structure design is closed
Reason, moreover it is possible to adjust output voltage, so that the utility model can be suitably used for different electronic products, while can also be to use electric loading
The voltage of stabilization is provided.
(2) the LC wave filters that the utility model can be made up of electric capacity C1 and electric capacity C2 and inductance L are filtered twice, energy
Ensure the stability by the more thorough of impurity harmonic filtration, therefore when can guarantee that the utility model runs.
(3) operational amplifier P of the present utility model and resistance R1, resistance R2, diode D1 and electric capacity C3 can also be constituted
Compare amplifying circuit, can effectively put forward high-tension resistance to pressure and dynamic range, and can be by the middle zero migration control of electric current
Make within 0.5nA, so as to can ensure that the stability of voltage and current.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model.
Specific embodiment
The utility model is described in further detail with reference to embodiment, but implementation method of the present utility model is not
It is limited to this.
Embodiment
As shown in figure 1, it is of the present utility model based on the voltage adjustable secondary filtering type voltage-stabilized power supply for comparing amplifying circuit,
Mainly by transformer T, diode rectifier U, operational amplifier P, three terminal regulator IC, triode VT, light emitting diode VD, electricity
Sense L, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, slide
Dynamic rheostat RP, diode D1, diode D2 and voltage-regulator diode D3 composition.Wherein, the light emitting diode VD is used for showing
Show working condition of the present utility model, turn-on power during utility model works, light emitting diode VD lights；The utility model is not
Deenergization during work, light emitting diode VD extinguishes, so as to user can be easy to observe, the light emitting diode VD in the present embodiment is adopted
Realized with BT201 types light emitting diode.
During connection, the positive pole of the electric capacity C1 is connected with the cathode output end of diode rectifier U, its negative pole and two poles
The cathode output end of pipe rectifier U is connected.Positive pole of the positive pole of the electric capacity C2 with electric capacity C1 after inductance L is connected, its
Negative pole is connected with the negative pole of electric capacity C1.The P poles of the diode D1 are connected with the positive input terminal of operational amplifier P, its N pole
It is connected with the IN pins of three terminal regulator IC.The positive pole of the electric capacity C3 is connected with the N poles of diode D1, its negative pole with fortune
The output end for calculating amplifier P is connected.The resistance R1 be serially connected in the negative input end of operational amplifier P and electric capacity C1 negative pole it
Between, the resistance R2 is serially connected between the N poles of diode D1 and P poles.The P poles of the light emitting diode VD after resistance R3 with electricity
The positive pole for holding C3 is connected, and its N pole is connected with the negative pole of electric capacity C1.The P poles of the diode D1 and the current collection of triode VT
Pole is connected, and its N pole is connected with the IN pins of three terminal regulator IC.The P poles of the voltage-regulator diode D3 and three terminal regulator U
ADJ pins be connected, its N pole is connected with the OUT pins of three terminal regulator U.The resistance R5 and voltage-regulator diode D3 phases
Parallel connection, the slide rheostat RP is serially connected between the ADJ pins of three terminal regulator U and the negative pole of electric capacity C1 and control end and electricity
The negative pole for holding C1 is connected, and the resistance R4 is serially connected between the base stage of triode VT and emitter stage.The electric capacity C4 positive poles with
The P poles of voltage-regulator diode D3 are connected, and its negative pole is connected with the negative pole of electric capacity C1.The positive pole of the electric capacity C5 and triode VT
Base stage be connected, its negative pole is connected with the negative pole of electric capacity C1.
Meanwhile, the positive input terminal of the operational amplifier P is connected with the positive pole of electric capacity C2, the OUT pipes of three terminal regulator U
Pin is connected with the base stage of triode VT.One input of the diode rectifier U and the secondary inductance coil of transformer T
Non-same polarity be connected, its another input is connected with the Same Name of Ends of the secondary inductance coil of transformer T, and its negative pole is defeated
Go out end ground connection.Two ends composition power input and the external mains supply of the primary side inductance coil of the transformer T, the electric capacity
The positive pole of C5 and negative pole constitute output end and external use electric loading.
When using, the transformer T is depressured to civil power, and in the present embodiment, transformer T uses EF20 step-down transformers
To realize, line voltage can be reduced to 36V, optional suitable transformer T can be needed according to the electricity consumption of electric loading when using.
The diode rectifier U is then used for rectification, and diode rectifier U is four diodes of 1N4001 commutation diodes composition
Rectifier.The electric capacity C1 is used to filter, and the capacitance of electric capacity C1 is 1000 μ F.The positive pole of the electric capacity C2 after inductance L with
The positive pole of electric capacity C1 is connected, and its negative pole is connected with the negative pole of electric capacity C1.
The operational amplifier P is collectively constituted with resistance R1, resistance R2, diode D1 and electric capacity C3 and is compared amplification electricity
Road, can effectively put forward high-tension resistance to pressure and dynamic range, and can by the middle zero migration of electric current control 0.5nA with
It is interior, so as to can ensure that the stability of voltage and current.During implementation, the operational amplifier P uses LM324 operation amplifiers
Device, the diode D1 is 1N4007 commutation diodes, and the resistance of the resistance R1 is 680 Ω, and the resistance of the resistance R2 is
The capacitance of 60 Ω, the electric capacity C3 is 150 μ F.
The resistance R3 is used to carry out partial pressure current limliting to light emitting diode VD, so as to light emitting diode VD can be protected by big electricity
Stream is damaged, and the resistance of resistance R3 is 5.1k Ω.The three terminal regulator IC and diode D2, voltage-regulator diode D3 can be carried out surely
Pressure treatment, to ensure the power supply to provide stabilization with electric loading.Wherein, diode D2 is protection diode, diode D2 and three
Can prevent input short and damage three terminal regulator IC after pole pipe VT combinations.The three terminal regulator IC is LM317 type voltage-stablizers,
What diode D2 was also adopted by is 1N4007 commutation diodes, and voltage-regulator diode D3 is 2CW105 voltage-regulator diodes.Meanwhile, triode
VT and resistance R4 can then form the effect of buffering to circuit, and triode VT is realized using 2N3055 triodes, resistance R4's
Resistance is then 1.2k Ω.
The utility model can adjust output voltage values, the resistance R5 and cunning by adjusting the resistance of slide rheostat RP
Dynamic rheostat RP forms the relation of partial pressure, the output voltage range in the present embodiment between 1.5~30V, i.e. the utility model
Can be used for multiple different use electric loading of the operating voltage between 1.5~30V, it is necessary to can lead to using other voltage ranges
Change transformer T is crossed to realize.The resistance of the resistance R5 in the present embodiment is 250 Ω, the resistance of slide rheostat RP for 0~
1.5k Ω, meanwhile, the capacitance of the electric capacity C4 is 120 μ F.The electric capacity C5 is used to export filtering, and its capacitance is 220 μ F.
It is of the present utility model to be not only simple in structure and cost is relatively low, it is also convenient for safeguarding.The utility model reasonable in design,
Output voltage can also be adjusted, so that the utility model can be suitably used for different electronic products, while can also be to be carried with electric loading
For the voltage of stabilization.The LC wave filters that the utility model can be made up of electric capacity C1 and electric capacity C2 and inductance L are filtered twice,
Can ensure that the stability by the more thorough of impurity harmonic filtration, therefore when can guarantee that the utility model runs.Also, the fortune
Calculate amplifier P and resistance R1, resistance R2, diode D1 and electric capacity C3 can also ratio of components compared with amplifying circuit, can effectively improve
The resistance to pressure and dynamic range of voltage, and the middle zero migration of electric current can be controlled within 0.5nA, so as to can ensure that electricity
The stability of pressure and electric current.
As described above, just can preferably realize the utility model.
Claims (5)
1. a kind of based on the voltage adjustable secondary filtering type voltage-stabilized power supply for comparing amplifying circuit, it is characterised in that：Mainly by becoming
Depressor T, diode rectifier U, operational amplifier P, three terminal regulator IC, triode VT, positive pole is with diode rectifier U just
The electric capacity C1 that pole output end is connected, negative pole is connected with the cathode output end of diode rectifier U, positive pole after inductance L with
The positive pole of electric capacity C1 is connected, negative pole is connected with the negative pole of electric capacity C1 electric capacity C2, P pole and the positive input of operational amplifier P
End is connected, the diode D1 that N poles are connected with the IN pins of three terminal regulator IC, positive pole is connected with the N poles of diode D1,
The electric capacity C3 that negative pole is connected with the output end of operational amplifier P, is serially connected in the negative input end of operational amplifier P with electric capacity C1's
Resistance R1 between negative pole, is serially connected in resistance R2, the P pole between the N poles of diode D1 and P poles after resistance R3 with electric capacity C3's
Light emitting diode VD, the P pole that positive pole is connected, N poles are connected with the negative pole of electric capacity C1 is connected with the colelctor electrode of triode VT,
Diode D1, the P pole that N poles are connected with the IN pins of three terminal regulator IC is connected with the ADJ pins of three terminal regulator U, N poles
The voltage-regulator diode D3 being connected with the OUT pins of three terminal regulator U, the resistance R5 being in parallel with voltage-regulator diode D3, concatenation
Between the ADJ pins and the negative pole of electric capacity C1 of three terminal regulator U and the slip that is connected with the negative pole of electric capacity C1 of control end becomes
Resistance device RP, is serially connected in the resistance R4 between the base stage of triode VT and emitter stage, and positive pole is extremely connected with the P of voltage-regulator diode D3
Connect, the electric capacity C4 that negative pole is connected with the negative pole of electric capacity C1, and positive pole be connected with the base stage of triode VT, negative pole and electric capacity
The electric capacity C5 compositions that the negative pole of C1 is connected；The positive input terminal of the operational amplifier P is connected with the positive pole of electric capacity C2, three ends
The OUT pins of voltage-stablizer U are connected with the base stage of triode VT；One input of the diode rectifier U and transformer T
The non-same polarity of secondary inductance coil be connected, the Same Name of Ends of its another input and the secondary inductance coil of transformer T
It is connected；The two ends composition power input of the primary side inductance coil of the transformer T, positive pole and the negative pole group of the electric capacity C5
Into output end.
2. according to claim 1 a kind of based on the voltage adjustable secondary filtering type voltage-stabilized power supply for comparing amplifying circuit,
It is characterized in that：The operational amplifier P is LM324 operational amplifiers.
3. according to claim 1 a kind of based on the voltage adjustable secondary filtering type voltage-stabilized power supply for comparing amplifying circuit,
It is characterized in that：The three terminal regulator IC is LM317 type voltage-stablizers.
4. according to claim 1 a kind of based on the voltage adjustable secondary filtering type voltage-stabilized power supply for comparing amplifying circuit,
It is characterized in that：The triode VT is 2N3055 triodes.
5. according to claim 1 a kind of based on the voltage adjustable secondary filtering type voltage-stabilized power supply for comparing amplifying circuit,
It is characterized in that：The diode rectifier U is four diode rectifiers of 1N4001 commutation diodes composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621136037.8U CN206195636U (en) | 2016-10-19 | 2016-10-19 | Adjustable secondary filter type constant voltage power supply of voltage based on compare amplifier circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621136037.8U CN206195636U (en) | 2016-10-19 | 2016-10-19 | Adjustable secondary filter type constant voltage power supply of voltage based on compare amplifier circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206195636U true CN206195636U (en) | 2017-05-24 |
Family
ID=58731606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621136037.8U Expired - Fee Related CN206195636U (en) | 2016-10-19 | 2016-10-19 | Adjustable secondary filter type constant voltage power supply of voltage based on compare amplifier circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206195636U (en) |
-
2016
- 2016-10-19 CN CN201621136037.8U patent/CN206195636U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Xiaolin Inventor after: Chang Junjiang Inventor after: Jiang Tao Inventor after: Yu Chuntang Inventor after: Yuan Shuai Inventor before: Mu Shaoying |
|
| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170901 Address after: 118000 Liaoning city of Dandong province Baoquan industrial zone of Kimcheon Port Industrial Park Road No. 2 Patentee after: Dandong Ding Ding Electronics Co., Ltd. Address before: 611230 Sichuan Economic Development Zone, Chongzhou Province Youth (College) Venture Park, building 2, building 5, No., No. 1 Patentee before: Sichuan million energy saving environmental protection technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170524 Termination date: 20201019 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |