CN204441988U - A kind of direct current adjustable charger circuit with overcurrent protection - Google Patents
A kind of direct current adjustable charger circuit with overcurrent protection Download PDFInfo
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- CN204441988U CN204441988U CN201520134251.9U CN201520134251U CN204441988U CN 204441988 U CN204441988 U CN 204441988U CN 201520134251 U CN201520134251 U CN 201520134251U CN 204441988 U CN204441988 U CN 204441988U
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- 230000001681 protective effect Effects 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims description 9
- 230000033228 biological regulation Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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Abstract
The utility model discloses a kind of direct current adjustable charger circuit with overcurrent protection; comprise power circuit, protective circuit and voltage follower circuit; described power circuit comprises transformer W, fuse FU and rectifier bridge T; described protective circuit comprises resistance R8, triode VT1 and chip IC 1, and described voltage follower circuit comprises ammeter A, voltmeter V and potentiometer RP1.The utility model adjustable charger circuit structure is simple; components and parts are few; the continuously adjustable burning voltage of 0 ~ 20V can be exported; maximum output current is 2A; for different power consumption equipment charging, circuit has overcurrent and short-circuit protection function simultaneously, and is provided with voltmeter and ammeter; person easy to use observes and the size of regulation output electric current and voltage, and this circuit has easy to use, overcurrent protection and advantage applied widely.
Description
Technical field
The utility model relates to a kind of charger circuit, specifically a kind of direct current adjustable charger circuit with overcurrent protection.
Background technology
Charger function common is in the market single, charging voltage voltage, poor compatibility, and does not possess defencive function, easily burns out because of overcurrent during charging and short circuit, brings inconvenience to user.
Utility model content
It is simple, highly sensitive that the purpose of this utility model is to provide a kind of structure, can automatically control the direct current adjustable charger circuit with overcurrent protection that waters, to solve the problem proposed in above-mentioned background technology according to soil moisture.
For achieving the above object, the utility model provides following technical scheme:
A kind of direct current adjustable charger circuit with overcurrent protection, comprise power circuit, protective circuit and voltage follower circuit, described power circuit comprises transformer W, fuse FU and rectifier bridge T, described protective circuit comprises resistance R8, triode VT1 and chip IC 1, and described voltage follower circuit comprises ammeter A, voltmeter V and potentiometer RP1;
One end of the winding L 1 of described transformer W connects 220V alternating current by fuse FU, the other end of the winding L 1 of transformer W connects the other end of 220V alternating current, the two ends of the winding L 2 of transformer W connect 1 port and 3 ports of rectifier bridge T respectively, the 1 port contact resistance R1 of rectifier bridge T, a stiff end of potentiometer RP1, the anode of diode D3 and the sliding end of potentiometer RP1, the other end of resistance R1 connects the anode of diode D1, the negative electrode contact resistance R8 of diode D1, resistance R12, electric capacity C1, the negative electrode of diode D2 and 4 ports of rectifier bridge T, the anode contact resistance R9 of diode D2, the other end contact resistance R1 of resistance R9, another stiff end of potentiometer RP1, electric capacity C4, the negative electrode of diode D5 and the emitter of triode VT3, the collector electrode contact resistance R10 of triode VT3, the base stage of electric capacity C3 and triode VT4, the other end ground connection of resistance R10, the other end of electric capacity C3 connects the other end of electric capacity C4, the other end of resistance R12 and the emitter of triode VT4, the other end of collector electrode contact resistance R11 of triode VT4 and the base stage of triode VT3, the other end ground connection of resistance R8, the negative electrode contact resistance R2 of diode D3, the other end of electric capacity C1, the collector electrode of triode VT1, the emitter of triode VT2 and 13 pins of chip IC 1, the anode of diode F5 connects 12 pins of electric capacity C5 and chip IC 1, the other end ground connection of electric capacity C5, the collector electrode of the base stage connecting triode VT2 of triode VT1, the other end of the base stage contact resistance R2 of triode VT2 and resistance R3, the other end of resistance R3 connects 11 pins of chip IC 1, the emitter contact resistance R5 of triode VT1, resistance R6, electric capacity C2, the negative electrode of diode D4 and ammeter A, resistance R5, the equal ground connection of the other end of resistance R6 and electric capacity C2, the plus earth of diode D, the other end contact resistance R4 of resistance R6, 4 pins of resistance R7 and chip IC 1, the other end ground connection of resistance R4, the other end of resistance R7 connects a stiff end of potentiometer RP2, the sliding end of potentiometer RP2 connects 6 pins of chip IC 1, another stiff end contact resistance R13 of potentiometer RP2 and 5 pins of chip IC 1, the other end ground connection of resistance R13, 7 pins of chip IC 1 and 9 pin ground connection, the other end of ammeter A connects voltmeter B and output voltage U1, the other end ground connection of voltmeter V.
As preferred version of the present utility model: described chip IC 1 is LM723 type voltage adjuster.
As preferred version of the present utility model: described diode D1 and diode D2 is light-emitting diode.
Compared with prior art; the beneficial effects of the utility model are: the utility model adjustable charger circuit structure is simple; components and parts are few; can export the continuously adjustable burning voltage of 0 ~ 20V, maximum output current is 2A, charges for different power consumption equipment; circuit has overcurrent and short-circuit protection function simultaneously; and be provided with voltmeter and ammeter, person easy to use observes and the size of regulation output electric current and voltage, this circuit has easy to use, overcurrent protection and advantage applied widely.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the direct current adjustable charger circuit with overcurrent protection.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of direct current adjustable charger circuit with overcurrent protection, comprise power circuit, protective circuit and voltage follower circuit, described power circuit comprises transformer W, fuse FU and rectifier bridge T, described protective circuit comprises resistance R8, triode VT1 and chip IC 1, and described voltage follower circuit comprises ammeter A, voltmeter V and potentiometer RP1;
One end of the winding L 1 of described transformer W connects 220V alternating current by fuse FU, the other end of the winding L 1 of transformer W connects the other end of 220V alternating current, the two ends of the winding L 2 of transformer W connect 1 port and 3 ports of rectifier bridge T respectively, the 1 port contact resistance R1 of rectifier bridge T, a stiff end of potentiometer RP1, the anode of diode D3 and the sliding end of potentiometer RP1, the other end of resistance R1 connects the anode of diode D1, the negative electrode contact resistance R8 of diode D1, resistance R12, electric capacity C1, the negative electrode of diode D2 and 4 ports of rectifier bridge T, the anode contact resistance R9 of diode D2, the other end contact resistance R1 of resistance R9, another stiff end of potentiometer RP1, electric capacity C4, the negative electrode of diode D5 and the emitter of triode VT3, the collector electrode contact resistance R10 of triode VT3, the base stage of electric capacity C3 and triode VT4, the other end ground connection of resistance R10, the other end of electric capacity C3 connects the other end of electric capacity C4, the other end of resistance R12 and the emitter of triode VT4, the other end of collector electrode contact resistance R11 of triode VT4 and the base stage of triode VT3, the other end ground connection of resistance R8, the negative electrode contact resistance R2 of diode D3, the other end of electric capacity C1, the collector electrode of triode VT1, the emitter of triode VT2 and 13 pins of chip IC 1, the anode of diode F5 connects 12 pins of electric capacity C5 and chip IC 1, the other end ground connection of electric capacity C5, the collector electrode of the base stage connecting triode VT2 of triode VT1, the other end of the base stage contact resistance R2 of triode VT2 and resistance R3, the other end of resistance R3 connects 11 pins of chip IC 1, the emitter contact resistance R5 of triode VT1, resistance R6, electric capacity C2, the negative electrode of diode D4 and ammeter A, resistance R5, the equal ground connection of the other end of resistance R6 and electric capacity C2, the plus earth of diode D, the other end contact resistance R4 of resistance R6, 4 pins of resistance R7 and chip IC 1, the other end ground connection of resistance R4, the other end of resistance R7 connects a stiff end of potentiometer RP2, the sliding end of potentiometer RP2 connects 6 pins of chip IC 1, another stiff end contact resistance R13 of potentiometer RP2 and 5 pins of chip IC 1, the other end ground connection of resistance R13, 7 pins of chip IC 1 and 9 pin ground connection, the other end of ammeter A connects voltmeter B and output voltage U1, the other end ground connection of voltmeter V.
Chip IC 1 is LM723 type voltage adjuster.
Diode D1 and diode D2 is light-emitting diode.
Operation principle of the present utility model is: circuit access 220V line voltage, when normally using, light-emitting diode D1 and D2 is simultaneously glittering, and regulator potentiometer RP2 can make output voltage U1 regulate within the scope of 0 ~ 20V.When there is overcurrent or short circuit in output, the pressure drop at resistance R8 two ends is greater than 0.6V, triode VT3 and triode VT4 conducting, now diode D7 conducting, 13 pin voltage of chip IC 1 decline close to 0V, by internal detection circuitry action, its 12 pin output HIGH voltage 23V, triode VT1 triode VT2 is ended, therefore Non voltage output, play a protective role, after only having shutdown, start just has output again, circuit structure is simple, components and parts are few, the continuously adjustable burning voltage of exportable 0 ~ 20V, maximum output current can reach 2A, for different power consumption equipment charging, circuit has overcurrent and short-circuit protection function simultaneously, and be provided with voltmeter and ammeter, the size of person's observation easy to use and regulation output electric current and voltage, this circuit has easy to use, overcurrent protection and advantage applied widely.
Claims (3)
1. there is a direct current adjustable charger circuit for overcurrent protection, comprise power circuit, protective circuit and voltage follower circuit; It is characterized in that, described power circuit comprises transformer W, fuse FU and rectifier bridge T, and described protective circuit comprises resistance R8, triode VT1 and chip IC 1, and described voltage follower circuit comprises ammeter A, voltmeter V and potentiometer RP1;
One end of the winding L 1 of described transformer W connects 220V alternating current by fuse FU, the other end of the winding L 1 of transformer W connects the other end of 220V alternating current, the two ends of the winding L 2 of transformer W connect 1 port and 3 ports of rectifier bridge T respectively, the 1 port contact resistance R1 of rectifier bridge T, a stiff end of potentiometer RP1, the anode of diode D3 and the sliding end of potentiometer RP1, the other end of resistance R1 connects the anode of diode D1, the negative electrode contact resistance R8 of diode D1, resistance R12, electric capacity C1, the negative electrode of diode D2 and 4 ports of rectifier bridge T, the anode contact resistance R9 of diode D2, the other end contact resistance R1 of resistance R9, another stiff end of potentiometer RP1, electric capacity C4, the negative electrode of diode D5 and the emitter of triode VT3, the collector electrode contact resistance R10 of triode VT3, the base stage of electric capacity C3 and triode VT4, the other end ground connection of resistance R10, the other end of electric capacity C3 connects the other end of electric capacity C4, the other end of resistance R12 and the emitter of triode VT4, the other end of collector electrode contact resistance R11 of triode VT4 and the base stage of triode VT3, the other end ground connection of resistance R8, the negative electrode contact resistance R2 of diode D3, the other end of electric capacity C1, the collector electrode of triode VT1, the emitter of triode VT2 and 13 pins of chip IC 1, the anode of diode F5 connects 12 pins of electric capacity C5 and chip IC 1, the other end ground connection of electric capacity C5, the collector electrode of the base stage connecting triode VT2 of triode VT1, the other end of the base stage contact resistance R2 of triode VT2 and resistance R3, the other end of resistance R3 connects 11 pins of chip IC 1, the emitter contact resistance R5 of triode VT1, resistance R6, electric capacity C2, the negative electrode of diode D4 and ammeter A, resistance R5, the equal ground connection of the other end of resistance R6 and electric capacity C2, the plus earth of diode D, the other end contact resistance R4 of resistance R6, 4 pins of resistance R7 and chip IC 1, the other end ground connection of resistance R4, the other end of resistance R7 connects a stiff end of potentiometer RP2, the sliding end of potentiometer RP2 connects 6 pins of chip IC 1, another stiff end contact resistance R13 of potentiometer RP2 and 5 pins of chip IC 1, the other end ground connection of resistance R13, 7 pins of chip IC 1 and 9 pin ground connection, the other end of ammeter A connects voltmeter B and output voltage U1, the other end ground connection of voltmeter V.
2. a kind of direct current adjustable charger circuit with overcurrent protection according to claim 1, it is characterized in that, described chip IC 1 is LM723 type voltage adjuster.
3. a kind of direct current adjustable charger circuit with overcurrent protection according to claim 1, it is characterized in that, described diode D1 and diode D2 is light-emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520134251.9U CN204441988U (en) | 2015-03-10 | 2015-03-10 | A kind of direct current adjustable charger circuit with overcurrent protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520134251.9U CN204441988U (en) | 2015-03-10 | 2015-03-10 | A kind of direct current adjustable charger circuit with overcurrent protection |
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| Publication Number | Publication Date |
|---|---|
| CN204441988U true CN204441988U (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520134251.9U Active CN204441988U (en) | 2015-03-10 | 2015-03-10 | A kind of direct current adjustable charger circuit with overcurrent protection |
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| Country | Link |
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| CN (1) | CN204441988U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106444944A (en) * | 2016-08-30 | 2017-02-22 | 江苏惠中电气有限公司 | Linear direct-current power source |
-
2015
- 2015-03-10 CN CN201520134251.9U patent/CN204441988U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106444944A (en) * | 2016-08-30 | 2017-02-22 | 江苏惠中电气有限公司 | Linear direct-current power source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Dongsheng Inventor before: Zhou Aijuan |
|
| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151217 Address after: 100043, building 1, building 6, Galaxy Avenue, Shijingshan District, Beijing, Patentee after: China National Water Resources & Electric Power Materials & Equipment Co., Ltd.Co., Ltd. Address before: 315700 Zhejiang city of Ningbo province Xiangshan County Xiang Town Industrial Park Patentee before: Zhou Aijuan |