CN205318269U - Adjustable linear stabilized power supply and have electrical equipment of this power - Google Patents
Adjustable linear stabilized power supply and have electrical equipment of this power Download PDFInfo
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- CN205318269U CN205318269U CN201520878382.8U CN201520878382U CN205318269U CN 205318269 U CN205318269 U CN 205318269U CN 201520878382 U CN201520878382 U CN 201520878382U CN 205318269 U CN205318269 U CN 205318269U
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Abstract
The utility model discloses an adjustable linear stabilized power supply and have electrical equipment of this power. Wherein, adjustable linear stabilized power supply includes: the power supply detected circuit, the power supply detected circuit includes: threshold value setting branch road and input check branch road, the threshold value setting branch road for set up the input voltage detection threshold, the input check branch road is used for the basis the input voltage detection threshold that sets up is judged, if the power input voltage be greater than the input voltage detection threshold that sets up, then voltage detecting foot output high level, if the power input voltage be not greater than the input voltage detection threshold that sets up, then voltage detecting foot output low level. Adopt the utility model discloses technical scheme reduces constant voltage power supply's design cost, can also realize that input voltage detects.
Description
Technical field
This utility model relates to electric and electronic technical field, particularly to a kind of adjustable linear stabilized power supply and the electric equipment with this power supply.
Background technology
With science and technology growing, electronics categories get more and more, matched power supply is also different. Electronic products different in the prior art is according to different applications and application attribute, it is necessary to supporting power supply is also different. But in the prior art scheme, the voltage stabilizing chip in power supply generally adopts ready-made three-terminal voltage-stabilizing chip, such as LM1117-3.3V or integrated adjustable linear stabilized power supply; But this chip price is relatively expensive, temperature drift is relatively larger, and output voltage is scarcely adjustable. Also having some existing voltage stabilizing schemes then to adopt the feedback of operational amplifier to export, build corresponding output circuit, such as voltage follower circuit, forward amplification output circuit etc., but the price of this kind of mu balanced circuit is relative also more expensive, and current output capability is poor.
Inventor in the process of design linear stabilized power supply, inventor have found that in prior art, at least there are the following problems:
The circuit design realizing now voltage stabilizing function is relatively costly, it is impossible to realize input voltage measurement.
Utility model content
In view of the above problems, it is proposed that this utility model is to provide a kind of and overcome the problems referred to above or solve a kind of adjustable linear stabilized power supply of the problems referred to above at least in part and have the electric equipment of this power supply.
According to an aspect of the present utility model, this utility model provides a kind of adjustable linear stabilized power supply, and this circuit includes: for power detection circuit;
Described confession power detection circuit is used for judging that whether power input voltage is normal; If described power input voltage is normal, then export high level; If described power input voltage is abnormal, then output low level.
Wherein, described confession power detection circuit includes: threshold value arranges branch road and input detection branch;
Described threshold value arranges branch road 101, is used for arranging input voltage measurement threshold value;
Described input detection branch 102, judges for the input voltage measurement threshold value according to described setting;If described power input voltage is more than the input voltage measurement threshold value of described setting, then export high level; If described power input voltage is not more than the input voltage measurement threshold value of described setting, then output low level.
Wherein, described input detection branch includes: the 3rd audion Q3 and the seven resistance R7;
Described 3rd audion Q3 colelctor electrode connects described 7th resistance R7 one end; Described 3rd audion Q3 base stage connects described threshold value and arranges branch road one end; Described 3rd audion Q3 emitter stage connects described threshold value and arranges the branch road other end;
Described 7th resistance R7 other end ground connection.
Wherein, described threshold value arranges branch road and includes: the tenth resistance R10;
Described tenth resistance R10 mono-terminates described 3rd audion Q3 emitter stage, and another terminates described 3rd audion Q3 base stage.
Wherein, this power supply also includes: the 14th resistance R14, the 17th resistance R17, the 15th resistance R15, the 16th resistance R16, the first audion Q1, the second audion Q2 and the five diode V5;
Described 14th resistance R14 mono-terminates described second audion Q2 colelctor electrode, and another terminates described 17th resistance R17, described tenth resistance R10, described 3rd audion Q3 emitter stage link;
Another described second audion Q2 base stage of termination of described 17th resistance R17;
Described second audion Q2 emitter stage connects described 16th resistance R16 one end;
Another described 15th resistance of termination of described 16th resistance R16 and described first audion Q1 base connections;
Another described 5th diode V5 positive terminal of termination of described 15th resistance R15;
Described first audion Q1 grounded emitter;
Described first audion Q1 colelctor electrode connects described tenth resistance R10 and described 3rd audion Q3 base connections;
Described 5th diode V5 negative pole end ground connection.
Wherein, described 5th diode V5 is silicon diode.
Wherein, this power supply also includes: Zener diode Z1;
Described Zener diode Z1 negative pole terminates described first audion Q1 emitter stage;
Described Zener diode Z1 positive terminal ground connection.
Wherein, described Zener diode Z1 is 5-6V Zener diode.
Wherein, this power supply also includes: the 4th diode V4;
Described 4th diode V4 positive pole terminates described second transistor emitter and described 16th resistance link;
Described 4th diode V4 negative pole end is voltage output end.
According to another aspect of the present utility model, this utility model provides a kind of electric equipment, including: adjustable linear stabilized power supply described in any one as mentioned above.
The beneficial effects of the utility model are: arrange in regulated power supply and carry out judging that whether power input voltage is normal for power detection circuit; If described power input voltage is normal, then export high level; If described power input voltage is not enough, then output low level. Technical solutions of the utility model are for adjustable linear stabilized power supply application scenario, it is provided that simple effectively and the high circuit arrangement of cost performance, it is achieved the adjustability of circuit is good, and detection incoming level state is sensitive reliably.
Accompanying drawing explanation
Fig. 1 is the adjustable linear stabilized power supply structural representation of one that this utility model provides;
Fig. 2 is the adjustable linear voltage-stabilized power supply circuit figure of one that this utility model provides;
Fig. 3 is the adjustable linear voltage-stabilized power supply circuit figure of another kind that this utility model provides;
Fig. 4 is another adjustable linear voltage-stabilized power supply circuit figure that this utility model provides;
Fig. 5 is a kind of electric equipment structural representation that this utility model provides.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, this utility model embodiment is described in further detail.
This utility model provides a kind of adjustable linear stabilized power supply and has the electric equipment of this power supply.
Fig. 1 is the adjustable linear stabilized power supply structural representation of one that this utility model provides; This power supply includes: for power detection circuit;
Described confession power detection circuit is used for judging that whether power input voltage is normal; If described power input voltage is normal, then export high level; If described power input voltage is not enough, then output low level.
Wherein, described confession power detection circuit includes: threshold value arranges branch road and input detection branch;
Described threshold value arranges branch road, is used for arranging input voltage measurement threshold value;
Described input detection branch, judges for the input voltage measurement threshold value according to described setting; If described power input voltage is more than the input voltage measurement threshold value of described setting, then export high level; If described power input voltage is not more than the input voltage measurement threshold value of described setting, then output low level.
As in figure 2 it is shown, the adjustable linear voltage-stabilized power supply circuit figure of one provided for this utility model embodiment; This circuit includes: input detection branch, and threshold value arranges branch road and other peripheral circuits;
Described input detection branch includes: the 3rd audion Q3 and the seven resistance R7;
Described 3rd audion Q3 colelctor electrode connects described 7th resistance R7 one end; Described 3rd audion Q3 base stage connects described threshold value and arranges branch road one end; Described 3rd audion Q3 emitter stage connects described threshold value and arranges the branch road other end;
Described 7th resistance R7 other end ground connection.
Described threshold value arranges branch road and includes: the tenth resistance R10;
Described tenth resistance R10 mono-terminates described 3rd audion Q3 emitter stage, and another terminates described 3rd audion Q3 base stage.
Other peripheral circuits described also include: the 14th resistance R14, the 17th resistance R17, the 15th resistance R15, the 16th resistance R16, the first audion Q1, the second audion Q2 and the five diode V5;
Described 14th resistance R14 mono-terminates described second audion Q2 colelctor electrode, and another terminates described 17th resistance R17, described tenth resistance R10, described 3rd audion Q3 emitter stage link;
Another described second audion Q2 base stage of termination of described 17th resistance R17;
Described second audion Q2 emitter stage connects described 16th resistance R16 one end;
Another described 15th resistance of termination of described 16th resistance R16 and described first audion Q1 base connections;
Another described 5th diode V5 positive terminal of termination of described 15th resistance R15;
Described first audion Q1 grounded emitter;
Described first audion Q1 colelctor electrode connects described tenth resistance R10 and described 3rd audion Q3 base connections;
Described 5th diode V5 negative pole end ground connection.
It should be noted that the 5th diode V5 described in this circuit can also be silicon diode in Fig. 4 structure.
Based on above example, as it is shown on figure 3, this utility model additionally provides another kind of adjustable linear voltage-stabilized power supply circuit figure; This circuit is in that from the different of Fig. 2 circuit, and this circuit also includes: this power supply also includes: the 4th diode V4;
Described 4th diode V4 positive pole terminates described second transistor emitter and described 16th resistance link;
Described 4th diode V4 negative pole end is voltage output end.
Based on circuit shown in figure 2 above, as shown in Figure 4, this utility model additionally provides another adjustable linear voltage-stabilized power supply circuit figure; This circuit is in that from the different of Fig. 2 circuit, and this circuit also includes: Zener diode Z1;
Described Zener diode Z1 negative pole terminates described first audion Q1 emitter stage;
Described Zener diode Z1 positive terminal ground connection.
It should be noted that this Zener diode Z1 is 5-6V Zener diode.
Also, it should be noted this circuit is also based on circuit shown in Fig. 3, and difference is also only that described Zener diode Z1.
Also, it should be noted the above first audion Q1 and the second audion Q2 can also change the structure that amplification is bigger into, such as darlington structure or NPN and PNP Cascaded amplification structure.
As it is shown in figure 5, this utility model additionally provides a kind of electric equipment, including: adjustable linear stabilized power supply described in any one as mentioned above.
The beneficial effects of the utility model are: arrange in regulated power supply and carry out judging that whether power input voltage is normal for power detection circuit; If described power input voltage is normal, then normal output voltage; If described power input voltage is abnormal, then feed back input undertension. Technical solutions of the utility model are for adjustable linear stabilized power supply application scenario, it is provided that simple effectively and the high circuit arrangement of cost performance, it is achieved the adjustability of circuit is good, and detection incoming level state is sensitive reliably.
The foregoing is only preferred embodiment of the present utility model, be not intended to limit protection domain of the present utility model. All make within spirit of the present utility model and principle any amendment, equivalent replacement, improvement etc., be all contained in protection domain of the present utility model.
Claims (9)
1. an adjustable linear stabilized power supply, it is characterised in that this power supply includes: for power detection circuit;
Described confession power detection circuit is used for judging that whether power input voltage is normal; If described power input voltage is normal, then export high level; If described power input voltage is abnormal, then output low level;
Described confession power detection circuit includes: threshold value arranges branch road and input detection branch;
Described threshold value arranges branch road, is used for arranging input voltage measurement threshold value;
Described input detection branch, judges for the input voltage measurement threshold value according to described setting; If described power input voltage is more than the input voltage measurement threshold value of described setting, then export high level; If described power input voltage is not more than the input voltage measurement threshold value of described setting, then output low level.
2. adjustable linear stabilized power supply as claimed in claim 1, it is characterised in that described input detection branch includes: the 3rd audion Q3 and the seven resistance R7;
Described 3rd audion Q3 colelctor electrode connects described 7th resistance R7 one end; Described 3rd audion Q3 base stage connects described threshold value and arranges branch road one end; Described 3rd audion Q3 emitter stage connects described threshold value and arranges the branch road other end;
Described 7th resistance R7 other end ground connection.
3. adjustable linear stabilized power supply as claimed in claim 2, it is characterised in that described threshold value arranges branch road and includes: the tenth resistance R10;
Described tenth resistance R10 mono-terminates described 3rd audion Q3 emitter stage, and another terminates described 3rd audion Q3 base stage.
4. adjustable linear stabilized power supply as claimed in claim 3, it is characterised in that this power supply also includes: the 14th resistance R14, the 17th resistance R17, the 15th resistance R15, the 16th resistance R16, the first audion Q1, the second audion Q2 and the five diode V5;
Described 14th resistance R14 mono-terminates described second audion Q2 colelctor electrode, and another terminates described 17th resistance R17, described tenth resistance R10, described 3rd audion Q3 emitter stage link;
Another described second audion Q2 base stage of termination of described 17th resistance R17;
Described second audion Q2 emitter stage connects described 16th resistance R16 one end;
Another described 15th resistance of termination of described 16th resistance R16 and described first audion Q1 base connections;
Another described 5th diode V5 positive terminal of termination of described 15th resistance R15;
Described first audion Q1 grounded emitter;
Described first audion Q1 colelctor electrode connects described tenth resistance R10 and described 3rd audion Q3 base connections;
Described 5th diode V5 negative pole end ground connection.
5. adjustable linear stabilized power supply as claimed in claim 4, it is characterised in that
Described 5th diode V5 is silicon diode.
6. adjustable linear stabilized power supply as claimed in claim 5, it is characterised in that also include: Zener diode Z1;
Described Zener diode Z1 negative pole terminates described first audion Q1 emitter stage;
Described Zener diode Z1 positive terminal ground connection.
7. adjustable linear stabilized power supply as claimed in claim 6, it is characterised in that described Zener diode Z1 is 5-6V Zener diode.
8. adjustable linear stabilized power supply as described in any one in claim 4-7, it is characterised in that this power supply also includes: the 4th diode V4;
Described 4th diode V4 positive pole terminates described second transistor emitter and described 16th resistance link;
Described 4th diode V4 negative pole end is voltage output end.
9. an electric equipment, it is characterised in that including: adjustable linear stabilized power supply as claimed in any of claims 1 to 8 in one of claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520878382.8U CN205318269U (en) | 2015-11-05 | 2015-11-05 | Adjustable linear stabilized power supply and have electrical equipment of this power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520878382.8U CN205318269U (en) | 2015-11-05 | 2015-11-05 | Adjustable linear stabilized power supply and have electrical equipment of this power |
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| Publication Number | Publication Date |
|---|---|
| CN205318269U true CN205318269U (en) | 2016-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520878382.8U Active CN205318269U (en) | 2015-11-05 | 2015-11-05 | Adjustable linear stabilized power supply and have electrical equipment of this power |
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| CN (1) | CN205318269U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107291137A (en) * | 2017-07-25 | 2017-10-24 | 西安电子科技大学 | A kind of adjustable output reference source circuit |
| CN113433996A (en) * | 2020-03-23 | 2021-09-24 | 捷拓科技股份有限公司 | Auxiliary power supply circuit with wide input voltage range |
| US11545885B2 (en) | 2020-03-19 | 2023-01-03 | Minmax Technology Co., Ltd. | Auxiliary power supply circuit operating within a wide input voltage range |
-
2015
- 2015-11-05 CN CN201520878382.8U patent/CN205318269U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107291137A (en) * | 2017-07-25 | 2017-10-24 | 西安电子科技大学 | A kind of adjustable output reference source circuit |
| CN107291137B (en) * | 2017-07-25 | 2018-11-27 | 西安电子科技大学 | A kind of adjustable outputting reference source circuit |
| US11545885B2 (en) | 2020-03-19 | 2023-01-03 | Minmax Technology Co., Ltd. | Auxiliary power supply circuit operating within a wide input voltage range |
| CN113433996A (en) * | 2020-03-23 | 2021-09-24 | 捷拓科技股份有限公司 | Auxiliary power supply circuit with wide input voltage range |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |