CN106505540A - Battery lamp load short-circuit protection circuit - Google Patents
Battery lamp load short-circuit protection circuit Download PDFInfo
- Publication number
- CN106505540A CN106505540A CN201611181378.1A CN201611181378A CN106505540A CN 106505540 A CN106505540 A CN 106505540A CN 201611181378 A CN201611181378 A CN 201611181378A CN 106505540 A CN106505540 A CN 106505540A
- Authority
- CN
- China
- Prior art keywords
- chip microcomputer
- resistance
- electric capacity
- battery lamp
- ports
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
- H02H9/025—Current limitation using field effect transistors
Abstract
The invention discloses battery lamp load short-circuit protection circuit; including single-chip microcomputer U1, resistance R1, resistance R2, resistance R3, electric capacity C2, electric capacity C3, electric capacity C4, switch TR, audion P1, battery lamp L1, power supply VCC, crystal oscillator CT; the present invention does not need electric fuse components and parts just effectively can stably protect power supply; so that normal circuit operation; and this circuit structure is simple, low cost.
Description
Technical field
The present invention relates to battery lamp load short-circuit protection circuit.
Background technology
Existing load short circuits protection circuit is required for resettable fuse components and parts stably to protect power supply and circuit,
And resettable fuse components and parts time permanent can damage, and people unpredictable to electric fuse component damage when
Between, circuit therefore cannot be avoided to be burned, brought inconvenience.
Content of the invention
The purpose of the present invention is to overcome the shortcomings of in existing product, there is provided a kind of battery lamp load short-circuit protection circuit.
In order to achieve the above object, the present invention is achieved by the following technical solutions.
The battery lamp load short-circuit protection circuit of the present invention, including single-chip microcomputer U1, resistance R1, resistance R2, resistance R3, electric capacity
C2, electric capacity C3, electric capacity C4, switch TR, audion P1, battery lamp L1, power supply VCC, crystal oscillator CT, the TCC ends of the single-chip microcomputer U1
One end of mouth connection resistance R2, the other end of the resistance R2 connect earth signal GND by electric capacity C4, and the resistance R2's is another
End connects earth signal GND, the colelctor electrode of the other end connecting triode P1 of the resistance R2, the audion by battery lamp L1
The base stage of P1 connects the DIO2 ports of single-chip microcomputer U1 by resistance R1, and the emitter stage of the audion P1 is single by resistance R3 connections
The vdd terminal mouth of piece machine U1, the vdd terminal mouth connection power supply VCC of the single-chip microcomputer U1, the vdd terminal mouth connection of the single-chip microcomputer U1 are single
The RSTN ports of piece machine U1, the OSCI ports of the single-chip microcomputer U1 connect earth signal GND by electric capacity C2, the single-chip microcomputer U1's
OSCO ports connect earth signal GND by electric capacity C3, the OSCI ports of the single-chip microcomputer U1 and the OSCO ports of single-chip microcomputer U1 it
Between connect crystal oscillator CT.
The present invention includes that electric capacity C1, the vdd terminal mouth of the single-chip microcomputer U1 connect earth signal GND by electric capacity C1.
Power supply VCC of the present invention is 3V-6.5V.
Audion P1 of the present invention is PNP triode.
The capacitance of electric capacity C4 of the present invention is more than 10uF.
Beneficial effects of the present invention are as follows：The present invention does not need electric fuse components and parts just effectively stably can protect power supply,
So that normal circuit operation, and this circuit structure is simple, low cost.
Description of the drawings
Fig. 1 is the circuit theory diagrams of the present invention.
Specific embodiment
Technical scheme is described further with reference to Figure of description.
As shown in figure 1, the battery lamp load short-circuit protection circuit of the present invention, including single-chip microcomputer U1, resistance R1, resistance R2,
Resistance R3, electric capacity C2, electric capacity C3, electric capacity C4, switch TR, audion P1, battery lamp L1, power supply VCC, crystal oscillator CT, the monolithic
The TCC ports of machine U1 connect one end of resistance R2, and the other end of the resistance R2 connects earth signal GND by electric capacity C4, described
The other end of resistance R2 connects earth signal GND, the current collection of the other end connecting triode P1 of the resistance R2 by battery lamp L1
Pole, the base stage of the audion P1 connect the DIO2 ports of single-chip microcomputer U1 by resistance R1, and the emitter stage of the audion P1 leads to
The vdd terminal mouth that resistance R3 connects single-chip microcomputer U1 is crossed, the vdd terminal mouth of the single-chip microcomputer U1 connects power supply VCC, the single-chip microcomputer U1's
Vdd terminal mouth connects the RSTN ports of single-chip microcomputer U1, and the OSCI ports of the single-chip microcomputer U1 connect earth signal GND by electric capacity C2,
The OSCO ports of the single-chip microcomputer U1 connect earth signal GND, the OSCI ports of the single-chip microcomputer U1 and single-chip microcomputer by electric capacity C3
Connect crystal oscillator CT between the OSCO ports of U1.The present invention includes that electric capacity C1, the vdd terminal mouth of the single-chip microcomputer U1 are connected by electric capacity C1
Ground signalling GND.Power supply VCC of the present invention is 3-6.5V.Audion P1 of the present invention is PNP triode.Institute of the present invention
The capacitance for stating electric capacity C4 is more than 10uF.
Operation principle：When battery lamp L1 is short-circuited, the TCC ports of single-chip microcomputer U1 are also low level, now trigger single
Piece machine internal control circuit, changes DIO2 ports dutycycle, and so as to allow audion P1 to carry out lightly conducting state, output current is on the contrary
Than connecting battery lamp LL1 normal works also less, effective protection PNP pipe and power supply VCC damage phenomenon because of short circuit, work as battery lamp
When L1 is connected again or is recovered normal condition, then the TCC ports of single-chip microcomputer U1 are high level, so as to close single-chip microcomputer duty
Than output, DIO2 ports return to initial output state again, and audion P1 is fully on, provide foot pressure foot to battery lamp L1 and flow,
Reach normal operating conditions.
The present invention does not need electric fuse components and parts just effectively can stably protect power supply so that normal circuit operation, and
This circuit structure is simple, low cost.
It should be noted that listed above is only a kind of specific embodiment of the invention.It is clear that the invention is not restricted to
Upper embodiment, can also have many deformations.In a word, one of ordinary skill in the art can be directly led from present disclosure
The all deformations for going out or associating, are considered as protection scope of the present invention.
Claims (5)
1. battery lamp load short-circuit protection circuit, it is characterised in that including single-chip microcomputer U1, resistance R1, resistance R2, resistance R3, electricity
Hold C2, electric capacity C3, electric capacity C4, switch TR, audion P1, battery lamp L1, power supply VCC, crystal oscillator CT, the TCC of the single-chip microcomputer U1
Port connects one end of resistance R2, and the other end of the resistance R2 connects earth signal GND by electric capacity C4, and the resistance R2's is another
One end connects earth signal GND, the colelctor electrode of the other end connecting triode P1 of the resistance R2, three pole by battery lamp L1
The base stage of pipe P1 connects the DIO2 ports of single-chip microcomputer U1 by resistance R1, and the emitter stage of the audion P1 is connected by resistance R3
The vdd terminal mouth of single-chip microcomputer U1, the vdd terminal mouth connection power supply VCC of the single-chip microcomputer U1, the vdd terminal mouth connection of the single-chip microcomputer U1
The RSTN ports of single-chip microcomputer U1, the OSCI ports of the single-chip microcomputer U1 connect earth signal GND, the single-chip microcomputer U1 by electric capacity C2
OSCO ports earth signal GND, the OSCI ports of the single-chip microcomputer U1 and the OSCO ports of single-chip microcomputer U1 are connected by electric capacity C3
Between connect crystal oscillator CT.
2. battery lamp load short-circuit protection circuit according to claim 1, it is characterised in that also include electric capacity C1, the list
The vdd terminal mouth of piece machine U1 connects earth signal GND by electric capacity C1.
3. battery lamp load short-circuit protection circuit according to claim 1, it is characterised in that the power supply VCC is 3V-
6.5V.
4. battery lamp load short-circuit protection circuit according to claim 1, it is characterised in that the audion P1 is PNP tri-
Pole pipe.
5. battery lamp load short-circuit protection circuit according to claim 1, it is characterised in that the capacitance of the electric capacity C4 is more than
10uF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611181378.1A CN106505540A (en) | 2016-12-20 | 2016-12-20 | Battery lamp load short-circuit protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611181378.1A CN106505540A (en) | 2016-12-20 | 2016-12-20 | Battery lamp load short-circuit protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106505540A true CN106505540A (en) | 2017-03-15 |
Family
ID=58335133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611181378.1A Pending CN106505540A (en) | 2016-12-20 | 2016-12-20 | Battery lamp load short-circuit protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106505540A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1147881A (en) * | 1994-05-12 | 1997-04-16 | 小松制作所株式会社 | Load driving device |
| JPH10174426A (en) * | 1996-12-03 | 1998-06-26 | Fuji Elelctrochem Co Ltd | Dc-dc converter |
| CN2759030Y (en) * | 2004-08-11 | 2006-02-15 | 天津理工大学 | Bridge superconducting current limiter controller based on DSP |
| US20070171591A1 (en) * | 2006-01-25 | 2007-07-26 | Texas Instruments Incorporated | Transistor overcurrent detection circuit with improved response time |
| CN101813958A (en) * | 2009-02-25 | 2010-08-25 | 联发科技股份有限公司 | Low dropout regulator, circuit and method for providing overcurrent protection therein |
| CN101924350A (en) * | 2010-01-15 | 2010-12-22 | 海洋王照明科技股份有限公司 | Battery protection circuit and LED lamp |
| CN201919209U (en) * | 2010-11-24 | 2011-08-03 | 广东紫金正天药业有限公司 | Drive power supply for LED lamp in medical equipment |
| CN202077005U (en) * | 2011-04-12 | 2011-12-14 | 杭州电子科技大学 | Touch screen switching circuit with infrared remote control |
| CN102354956A (en) * | 2011-09-02 | 2012-02-15 | 聚辰半导体(上海)有限公司 | Switch power controller and short-circuit protection method of current control end thereof |
| CN202738220U (en) * | 2012-09-07 | 2013-02-13 | 谢永桢 | Intelligent solar LED street lamp controller |
| CN203774774U (en) * | 2014-03-13 | 2014-08-13 | 福建农林大学 | MOS-tube protective circuit |
| CN104466912A (en) * | 2014-11-27 | 2015-03-25 | 矽力杰半导体技术(杭州)有限公司 | Linear voltage regulator with short-circuit protection function |
| CN206353703U (en) * | 2016-12-20 | 2017-07-25 | 宁波天辰汇光太阳能科技有限公司 | Battery lamp load short-circuit protection circuit |
-
2016
- 2016-12-20 CN CN201611181378.1A patent/CN106505540A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1147881A (en) * | 1994-05-12 | 1997-04-16 | 小松制作所株式会社 | Load driving device |
| JPH10174426A (en) * | 1996-12-03 | 1998-06-26 | Fuji Elelctrochem Co Ltd | Dc-dc converter |
| CN2759030Y (en) * | 2004-08-11 | 2006-02-15 | 天津理工大学 | Bridge superconducting current limiter controller based on DSP |
| US20070171591A1 (en) * | 2006-01-25 | 2007-07-26 | Texas Instruments Incorporated | Transistor overcurrent detection circuit with improved response time |
| CN101813958A (en) * | 2009-02-25 | 2010-08-25 | 联发科技股份有限公司 | Low dropout regulator, circuit and method for providing overcurrent protection therein |
| CN101924350A (en) * | 2010-01-15 | 2010-12-22 | 海洋王照明科技股份有限公司 | Battery protection circuit and LED lamp |
| CN201919209U (en) * | 2010-11-24 | 2011-08-03 | 广东紫金正天药业有限公司 | Drive power supply for LED lamp in medical equipment |
| CN202077005U (en) * | 2011-04-12 | 2011-12-14 | 杭州电子科技大学 | Touch screen switching circuit with infrared remote control |
| CN102354956A (en) * | 2011-09-02 | 2012-02-15 | 聚辰半导体(上海)有限公司 | Switch power controller and short-circuit protection method of current control end thereof |
| CN202738220U (en) * | 2012-09-07 | 2013-02-13 | 谢永桢 | Intelligent solar LED street lamp controller |
| CN203774774U (en) * | 2014-03-13 | 2014-08-13 | 福建农林大学 | MOS-tube protective circuit |
| CN104466912A (en) * | 2014-11-27 | 2015-03-25 | 矽力杰半导体技术(杭州)有限公司 | Linear voltage regulator with short-circuit protection function |
| CN206353703U (en) * | 2016-12-20 | 2017-07-25 | 宁波天辰汇光太阳能科技有限公司 | Battery lamp load short-circuit protection circuit |
Non-Patent Citations (1)
| Title |
|---|
| 李大友: "《微机在测控领域的应用》", 31 May 1997, 机械工业出版社 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 315500 No. 60 East Feng Road, Fenghua District, Zhejiang, Ningbo Applicant after: Ningbo Tianchen Hui Light Solar Technology Co. Ltd. Address before: 315500 East Road, Fenghua, Zhejiang, East Development Zone, 60-1, No. Applicant before: Fenghua Huiguang Solar Energy Technology Co., Ltd. |
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| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170315 |
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| RJ01 | Rejection of invention patent application after publication |