CN204634138U - Be applied to the LED control circuit of hot plug - Google Patents
Be applied to the LED control circuit of hot plug Download PDFInfo
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- CN204634138U CN204634138U CN201520402105.XU CN201520402105U CN204634138U CN 204634138 U CN204634138 U CN 204634138U CN 201520402105 U CN201520402105 U CN 201520402105U CN 204634138 U CN204634138 U CN 204634138U
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- resistance
- led
- hot plug
- control circuit
- triode
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model relates to the LED control circuit being applied to hot plug, comprise DC output circuit, remove ripple control chip, hot plug control circuit and LED, described DC output circuit, for exporting direct current to hot plug control circuit, and when LED accesses to removing ripple control chip power supply; Describedly removing ripple control chip, for gathering the ripple voltage signal of hot plug control circuit, and exporting corresponding driving voltage to hot plug control circuit according to this ripple voltage signal; Described hot plug control circuit, for controlling LED work when LED accesses.The technical solution of the utility model can ensure that LED does not have electric current to pass through connecting circuit instantaneously, and the rush of current that therefore can not cause off and on because of reasons such as loose contacts in swapping process, prevents LED from being burnt.
Description
Technical field
The utility model relates to LED control circuit, particularly relates to a kind of LED control circuit being applied to hot plug.
Background technology
Driving for great power LED has the requirement of power factor (PF), and in the market a large amount of use be one pole power-factor correction circuit.All there is the problem of stroboscopic in this kind of circuit.Common way increases the circuit that one-level removes stroboscopic, voltage stabilizing is carried out to the output voltage of power module, go the process such as ripple voltage after export LED again to, when but if this kind of circuit is applied to hot plug, still have power tube by impact failure, or LED is by the situation of impact failure.
Utility model content
For above-mentioned technical problem, the purpose of this utility model is to provide a kind of LED control circuit being applied to hot plug, and it can ensure that, in the process of plug, LED is unlikely to be subjected to rush of current and damage.
For achieving the above object, the utility model adopts following technical scheme:
Be applied to the LED control circuit of hot plug, comprise DC output circuit, remove ripple control chip, hot plug control circuit and LED, described DC output circuit, for exporting direct current to hot plug control circuit, and when LED accesses to removing ripple control chip power supply; Describedly removing ripple control chip, for gathering the ripple voltage signal of hot plug control circuit, and exporting corresponding driving voltage to hot plug control circuit according to this ripple voltage signal; Described hot plug control circuit, for controlling LED work when LED accesses.
Preferably, described hot plug control circuit comprises resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, electric capacity C1, electric capacity C2, electric capacity C3, triode Q1, triode Q2 and triode Q3, one end of described resistance R1 is all connected with DC output circuit with one end of electric capacity C1, the other end ground connection of electric capacity C1, the other end of resistance R1, one end of resistance R2 is all connected with the emitter of triode Q1 with one end of electric capacity C2, the other end of resistance R2, the other end of electric capacity C2 is all connected with the base stage of triode Q1 with the collector electrode of triode Q2, the collector electrode of triode Q1 connects the feeder ear removing ripple control chip, one end of the base stage contact resistance R3 of triode Q2, the other end of resistance R3, one end of electric capacity C3 is connected with one end of the equal resistance R5 in one end of resistance R4, the other end of electric capacity C3, the other end of resistance R4 and the equal ground connection of emitter of triode Q2, the other end of resistance R5 connects the drain electrode of field effect transistor Q3, the source electrode of field effect transistor Q3 is connected the sampling end of ripple control chip with one end of resistance R6, the grid of field effect transistor Q3 connects the output removing ripple control chip, the other end ground connection of resistance R6, one end of the positive terminal contact resistance R1 of described LED, the other end of the negative pole end contact resistance R5 of LED.
Preferably, the model of ripple control chip is gone to be JW1220 described in.
Compared to existing technology, the beneficial effects of the utility model are:
The technical solution of the utility model can ensure that LED does not have electric current to pass through connecting circuit instantaneously, and the rush of current that therefore can not cause off and on because of reasons such as loose contacts in swapping process, prevents LED from being burnt.
Accompanying drawing explanation
Fig. 1 is circuit structure diagram of the present utility model.
Wherein, 1, DC output circuit; 2, ripple control chip is removed; 3, LED.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the utility model is described further:
See Fig. 1, a kind of LED control circuit being applied to hot plug that the present embodiment provides, it comprises DC output circuit 1, remove ripple control chip 2, hot plug control circuit and LED 3, DC output circuit 1, for exporting direct current to hot plug control circuit, and when LED 3 accesses to going ripple control chip 2 to power; Removing ripple control chip 2, for gathering the ripple voltage signal of hot plug control circuit, and exporting corresponding driving voltage to hot plug control circuit according to this ripple voltage signal; Hot plug control circuit 3, works for controlling LED 3 when LED 3 accesses.
Concrete, hot plug control circuit comprises resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, electric capacity C1, electric capacity C2, electric capacity C3, triode Q1, triode Q2 and triode Q3, one end of described resistance R1 is all connected with DC output circuit 1 with one end of electric capacity C1, the other end ground connection of electric capacity C1, the other end of resistance R1, one end of resistance R2 is all connected with the emitter of triode Q1 with one end of electric capacity C2, the other end of resistance R2, the other end of electric capacity C2 is all connected with the base stage of triode Q1 with the collector electrode of triode Q2, the collector electrode of triode Q1 connects the feeder ear vcc removing ripple control chip 2, one end of the base stage contact resistance R3 of triode Q2, the other end of resistance R3, one end of electric capacity C3 is connected with one end of the equal resistance R5 in one end of resistance R4, the other end of electric capacity C3, the other end of resistance R4 and the equal ground connection of emitter of triode Q2, the other end of resistance R5 connects the drain electrode of field effect transistor Q3, the source electrode of field effect transistor Q3 is connected the sampling end cs of ripple control chip 2 with one end of resistance R6, the grid of field effect transistor Q3 connects the output g removing ripple control chip, the other end ground connection of resistance R6, one end of the positive terminal contact resistance R1 of LED 3, the other end of the negative pole end contact resistance R5 of LED 3.
The operation principle of the present embodiment is:
DC output circuit 1 connects outside electrical network, as long as DC output circuit 1 connects electrical network, then has voltage to export, and the electric capacity C1 therefore on hot plug control circuit 3 just necessarily has voltage.When LED 3 does not connect, no-voltage in the drain electrode of field effect transistor Q3, triode Q1 and triode Q2 also can not conducting, and go the feeder ear vcc of ripple control chip 2 to can not get power supply, cannot obtain field effect transistor Q3, therefore field effect transistor Q3 is in closed condition.When accessing LED 3, the alternating current that electrical network exports is converted to direct current and exports to ripple control chip 2 and power by DC output circuit 1, because field effect transistor Q3 is in closed condition, LED 3 still can not conducting at once, but, the voltage rise of the drain electrode of field effect transistor Q1, by the dividing potential drop of resistance R4 and resistance R5, can charge to electric capacity C3, when the voltage of electric capacity C3 acquires a certain degree, triode Q2 conducting, after triode Q2 conducting, voltage on electric capacity C1 just carries out dividing potential drop by resistance R1 and resistance R2, when the voltage on voltage R2 is greater than the PN junction conduction voltage drop of triode Q1, triode Q1 will conducting, voltage on electric capacity C1 is powered to removing ripple control chip 2 by resistance R1 and triode Q1, ripple control chip 2 is gone to start working, thus field effect transistor Q3 opens, at this moment LED 3 normally.
The model of ripple control chip 2 of going of the present embodiment can select JW1220.The present embodiment is equivalent to there has been a sequential control circuit; can ensure that LED does not have electric current to pass through connecting circuit instantaneously; the rush of current that just can not cause off and on because of reasons such as loose contacts in swapping process like this, and rush of current often can burn LED or field effect transistor Q3.
To one skilled in the art, according to technical scheme described above and design, other various corresponding change and deformation can be made, and all these change and deformation all should belong within the protection range of the utility model claim.
Claims (3)
1. one kind is applied to the LED control circuit of hot plug, it is characterized in that, comprise DC output circuit, remove ripple control chip, hot plug control circuit and LED, described DC output circuit, for exporting direct current to hot plug control circuit, and when LED accesses to removing ripple control chip power supply; Describedly removing ripple control chip, for gathering the ripple voltage signal of hot plug control circuit, and exporting corresponding driving voltage to hot plug control circuit according to this ripple voltage signal; Described hot plug control circuit, for controlling LED work when LED accesses.
2. be applied to the LED control circuit of hot plug as claimed in claim 1, it is characterized in that, described hot plug control circuit comprises resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, electric capacity C1, electric capacity C2, electric capacity C3, triode Q1, triode Q2 and triode Q3, one end of described resistance R1 is all connected with DC output circuit with one end of electric capacity C1, the other end ground connection of electric capacity C1, the other end of resistance R1, one end of resistance R2 is all connected with the emitter of triode Q1 with one end of electric capacity C2, the other end of resistance R2, the other end of electric capacity C2 is all connected with the base stage of triode Q1 with the collector electrode of triode Q2, the collector electrode of triode Q1 connects the feeder ear removing ripple control chip, one end of the base stage contact resistance R3 of triode Q2, the other end of resistance R3, one end of electric capacity C3 is connected with one end of the equal resistance R5 in one end of resistance R4, the other end of electric capacity C3, the other end of resistance R4 and the equal ground connection of emitter of triode Q2, the other end of resistance R5 connects the drain electrode of field effect transistor Q3, the source electrode of field effect transistor Q3 is connected the sampling end of ripple control chip with one end of resistance R6, the grid of field effect transistor Q3 connects the output removing ripple control chip, the other end ground connection of resistance R6, one end of the positive terminal contact resistance R1 of described LED, the other end of the negative pole end contact resistance R5 of LED.
3. be applied to the LED control circuit of hot plug as claimed in claim 1, it is characterized in that, described in go the model of ripple control chip to be JW1220.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520402105.XU CN204634138U (en) | 2015-06-11 | 2015-06-11 | Be applied to the LED control circuit of hot plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520402105.XU CN204634138U (en) | 2015-06-11 | 2015-06-11 | Be applied to the LED control circuit of hot plug |
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| Publication Number | Publication Date |
|---|---|
| CN204634138U true CN204634138U (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520402105.XU Active CN204634138U (en) | 2015-06-11 | 2015-06-11 | Be applied to the LED control circuit of hot plug |
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| Country | Link |
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| CN (1) | CN204634138U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107018594A (en) * | 2017-04-07 | 2017-08-04 | 深圳迈睿智能科技有限公司 | A kind of LED load guard method |
| CN112181123A (en) * | 2020-09-28 | 2021-01-05 | 苏州浪潮智能科技有限公司 | Device and method for improving output current sharing of hot-plug chip |
| CN112423434A (en) * | 2020-11-13 | 2021-02-26 | 浙江大学 | Power supply ripple based multi-path LED lamp brightness bypass detection device and method |
-
2015
- 2015-06-11 CN CN201520402105.XU patent/CN204634138U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107018594A (en) * | 2017-04-07 | 2017-08-04 | 深圳迈睿智能科技有限公司 | A kind of LED load guard method |
| CN107018594B (en) * | 2017-04-07 | 2020-02-14 | 深圳迈睿智能科技有限公司 | LED load protection method |
| CN112181123A (en) * | 2020-09-28 | 2021-01-05 | 苏州浪潮智能科技有限公司 | Device and method for improving output current sharing of hot-plug chip |
| CN112181123B (en) * | 2020-09-28 | 2022-07-12 | 苏州浪潮智能科技有限公司 | Device and method for improving output current sharing of hot-plug chip |
| CN112423434A (en) * | 2020-11-13 | 2021-02-26 | 浙江大学 | Power supply ripple based multi-path LED lamp brightness bypass detection device and method |
| CN112423434B (en) * | 2020-11-13 | 2021-10-08 | 浙江大学 | Power supply ripple based multi-path LED lamp brightness bypass detection device and method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 518116 No.1 and 3, Tongfu Road, Pingdong community, Pingdi street, Longgang District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN DARK ENERGY POWER SUPPLY Co.,Ltd. Address before: 518000 buildings a and D, Dahua Industrial Zone, No.8 Jixiang Road, Pingdi street, Longgang District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN DARK ENERGY POWER SUPPLY Co.,Ltd. |