CN205610482U - Direct current steady voltage protective power supply - Google Patents
Direct current steady voltage protective power supply Download PDFInfo
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- CN205610482U CN205610482U CN201620166173.5U CN201620166173U CN205610482U CN 205610482 U CN205610482 U CN 205610482U CN 201620166173 U CN201620166173 U CN 201620166173U CN 205610482 U CN205610482 U CN 205610482U
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- resistance
- audion
- diode
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- power supply
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- 230000001681 protective effect Effects 0.000 title abstract 3
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract 1
- 239000007795 chemical reaction product Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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- Continuous-Control Power Sources That Use Transistors (AREA)
Abstract
The utility model discloses a direct current steady voltage protective power supply, including resistance R2, chip IC1, triode V2 and triode V4, diode D1's negative pole, triode V2's collecting electrode, triode V3's collecting electrode, diode D2's negative pole and power VCC are connected to resistance R2's one end, diode D1's positive pole connecting resistance R1 and triode V1's base, resistance R1's other end connecting resistance R4, electric capacity C1, electric capacity C2, voltmeter V, potentiometre RP1's stiff end and load A, resistance R2's other end connection triode V1's projecting pole. The utility model discloses direct current steady voltage protective power supply simple structure, components and parts are few, not only can provide the DC voltage for the load to can automatic stabilization output voltage, still have overcurrent protection's function simultaneously, prevent that the load from receiving to overflow the damage to have consequently that the function is various, the protection is effectual and convenient to use's advantage.
Description
Technical field
This utility model relates to a kind of power circuit, specifically a kind of DC voltage-stabilizing protection power supply.
Background technology
Along with improving constantly of people's living standard, electronic equipment has become as a requisite part in life, the most various household electrical appliance bring great convenience to the life of people, work, and this kind of electronic installation is desirable that a constant voltage dc source that precision is higher, electric current is bigger.The constant voltage dc source of existing market is of a great variety, its mid and low-end products are the most, although low-end product has the advantage of price relative to high-end product, but quality is the most as one wishes, all there is the defect such as function singleness, life-span short, debugging maintenance difficult in common regulated power supply, although and high-end product reliable in quality, safety and stability, but price is high also allows people hang back.Therefore need to be improved.
Utility model content
The purpose of this utility model is to provide a kind of DC voltage-stabilizing protection power supply, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the following technical scheme of this utility model offer:
nullA kind of DC voltage-stabilizing protection power supply，Including resistance R2、Chip IC 1、Audion V2 and audion V4，One end of described resistance R2 connects the negative electrode of diode D1、The colelctor electrode of audion V2、The colelctor electrode of audion V3、The negative electrode of diode D2 and power supply VCC，The anode of diode D1 connects resistance R1 and the base stage of audion V1，The other end of resistance R1 connects resistance R4、Electric capacity C1、Electric capacity C2、Voltmeter V、The fixing end of of potentiometer RP1 and load A，The emitter stage of the other end connecting triode V1 of resistance R2，The colelctor electrode of audion V1 connects another fixing end of potentiometer RP1，The sliding end of potentiometer RP1 connects the pin 3 of chip IC 1，The plus earth of diode D2，The pin 1 of chip IC 1 connects the other end and the resistance R5 of resistance R4，The other end of resistance R5 connects resistance R6、The other end of electric capacity C1、The other end of electric capacity C2、The other end of load A、The other end of voltmeter V and the emitter stage of audion V4，The base stage of the other end connecting triode V2 of resistance R3 and the colelctor electrode of audion V4，The base stage of the emitter stage connecting triode V3 of audion V2，The emitter stage of audion V3 connects the other end and the resistance R7 of resistance R6，The base stage of the other end connecting triode V4 of resistance R7，The model of described chip IC 1 is LM321.
As preferred version of the present utility model: described diode D1 and diode D2 is Zener diode.
Compared with prior art; the beneficial effects of the utility model are: power supply architecture is simple, components and parts are few for the protection of this utility model DC voltage-stabilizing; there is provided DC voltage can not only to load; and can automatic stabilisation output voltage; the most also there is the function of overcurrent protection; prevent load from receiving overcurrent damage, therefore there is diverse in function, advantage that protected effect is good and easy to use.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of DC voltage-stabilizing protection power supply.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
nullRefer to Fig. 1，A kind of DC voltage-stabilizing protection power supply，Including resistance R2、Chip IC 1、Audion V2 and audion V4，One end of described resistance R2 connects the negative electrode of diode D1、The colelctor electrode of audion V2、The colelctor electrode of audion V3、The negative electrode of diode D2 and power supply VCC，The anode of diode D1 connects resistance R1 and the base stage of audion V1，The other end of resistance R1 connects resistance R4、Electric capacity C1、Electric capacity C2、Voltmeter V、The fixing end of of potentiometer RP1 and load A，The emitter stage of the other end connecting triode V1 of resistance R2，The colelctor electrode of audion V1 connects another fixing end of potentiometer RP1，The sliding end of potentiometer RP1 connects the pin 3 of chip IC 1，The plus earth of diode D2，The pin 1 of chip IC 1 connects the other end and the resistance R5 of resistance R4，The other end of resistance R5 connects resistance R6、The other end of electric capacity C1、The other end of electric capacity C2、The other end of load A、The other end of voltmeter V and the emitter stage of audion V4，The base stage of the other end connecting triode V2 of resistance R3 and the colelctor electrode of audion V4，The base stage of the emitter stage connecting triode V3 of audion V2，The emitter stage of audion V3 connects the other end and the resistance R7 of resistance R6，The base stage of the other end connecting triode V4 of resistance R7，The model of described chip IC 1 is LM321.
Diode D1 and diode D2 is Zener diode.
Operation principle of the present utility model is: a part for output voltage is sent into end of oppisite phase 1 foot of operational amplifier IC1 by the sample circuit being made up of resistance R4, R5, it is compared with the reference voltage (constant-current source that audion V1, stabilivolt D1, resistance R2, R1 form provides stable electric current for stabilivolt D2) being made up of stabilivolt D2 and potentiometer RP, comparative result is delivered to outfan, thus controls the conducting voltage of audion V3.If current potential is on the low side, making output voltage reduce, sample circuit also makes the c-e junction voltage of audion V3 reduce, so that output voltage raises, vice versa.So serve the effect of regulated output voltage.
Audion V4 and resistance R7 forms circuit overcurrent protection.When exporting electric current and exceeding rated current, V4 turns on, makes audion V2 and V3 end, outfan Non voltage output, it is therefore prevented that power supply damages.
Claims (2)
- null1. a DC voltage-stabilizing protection power supply，Including resistance R2、Chip IC 1、Audion V2 and audion V4，It is characterized in that，One end of described resistance R2 connects the negative electrode of diode D1、The colelctor electrode of audion V2、The colelctor electrode of audion V3、The negative electrode of diode D2 and power supply VCC，The anode of diode D1 connects resistance R1 and the base stage of audion V1，The other end of resistance R1 connects resistance R4、Electric capacity C1、Electric capacity C2、Voltmeter V、The fixing end of of potentiometer RP1 and load A，The emitter stage of the other end connecting triode V1 of resistance R2，The colelctor electrode of audion V1 connects another fixing end of potentiometer RP1，The sliding end of potentiometer RP1 connects the pin 3 of chip IC 1，The plus earth of diode D2，The pin 1 of chip IC 1 connects the other end and the resistance R5 of resistance R4，The other end of resistance R5 connects resistance R6、The other end of electric capacity C1、The other end of electric capacity C2、The other end of load A、The other end of voltmeter V and the emitter stage of audion V4，The base stage of the other end connecting triode V2 of resistance R3 and the colelctor electrode of audion V4，The base stage of the emitter stage connecting triode V3 of audion V2，The emitter stage of audion V3 connects the other end and the resistance R7 of resistance R6，The base stage of the other end connecting triode V4 of resistance R7，The model of described chip IC 1 is LM321.
- A kind of DC voltage-stabilizing protection power supply the most according to claim 1, it is characterised in that described diode D1 and diode D2 is Zener diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620166173.5U CN205610482U (en) | 2016-03-05 | 2016-03-05 | Direct current steady voltage protective power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620166173.5U CN205610482U (en) | 2016-03-05 | 2016-03-05 | Direct current steady voltage protective power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205610482U true CN205610482U (en) | 2016-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620166173.5U Expired - Fee Related CN205610482U (en) | 2016-03-05 | 2016-03-05 | Direct current steady voltage protective power supply |
Country Status (1)
| Country | Link |
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| CN (1) | CN205610482U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108908720A (en) * | 2018-07-11 | 2018-11-30 | 郭丰垒 | A kind of construction site aggregate blender |
-
2016
- 2016-03-05 CN CN201620166173.5U patent/CN205610482U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108908720A (en) * | 2018-07-11 | 2018-11-30 | 郭丰垒 | A kind of construction site aggregate blender |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Guo Yonghua Inventor before: Wang Congda |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170714 Address after: 200131 Shanghai city on Heidelberg Pudong New Area Free Trade Zone Road No. 38 Building 2 floor 203-47 room 2 Patentee after: Yue Sen lighting technology (Shanghai) Co., Ltd. Address before: Pujiang County, Zhejiang city of Jinhua province in 322200 Yu Xiang Yang Zhai Cun No. 162 Patentee before: Wang Congda |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160928 Termination date: 20210305 |