CN104735835A - Led lamp circuit - Google Patents
Led lamp circuit Download PDFInfo
- Publication number
- CN104735835A CN104735835A CN201510135730.7A CN201510135730A CN104735835A CN 104735835 A CN104735835 A CN 104735835A CN 201510135730 A CN201510135730 A CN 201510135730A CN 104735835 A CN104735835 A CN 104735835A
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- China
- Prior art keywords
- relay
- led lamp
- current
- led
- comparator
- 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.)
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Abstract
The invention provides an LED lamp circuit and relates to the technical field of LED illumination. The LED lamp circuit is mainly composed of current-limiting resistors, a capacitor, a reverse connection prevention circuit and multiple LED beads. The reverse connection prevention circuit comprises a comparator, a triode and a relay, the triode is arranged between the comparator and the relay, the comparator is connected with the capacitor, the relay is arranged at the input end of an external power source, and the current-limiting resistors are arranged between the relay and the LED beads. The LED lamp circuit is simple in structure and low in cost, the current-limiting resistors are arranged in an existing LED lamp circuit, the work current is limited through the resistors so as to be controllable, and the service life of the product is effectively prolonged; meanwhile, the reverse connection prevention circuit is arranged so that the situation that an element and a light source are burnt out due to man-made reverse electrode connection in the installation and maintenance processes can be prevented.
Description
Technical field
The application relates to LED lighting technical field, is specifically related to a kind of LED circuit for lamp.
Background technology
Along with expanding economy and social progress, energy conservation has become the certainty of social consensus and development, and LED light fixture is a kind of green product of energy-conserving and environment-protective, develops more and swifter and more violent at present in illuminating industry.Due to the semiconductor device that LED is characteristic sensitivity, there is again the characteristic of negative temperature, therefore need to keep the stable of its operating state in application process, LED can directly be connected with electric main unlike common incandescent lamp bulb, LED is the low voltage drive of 2-3V, it normally works must to design satisfactory drives, and LED lamp adopts some LEDs lamp pearls to be in series usually at present, due to the discreteness of LED lamp pearl, drive if do not adopted constant current and will cause lamp pearl brightness irregularities, the slight fluctuations of voltage can cause the great variety of electric current easily to cause LED lamp pearl overcurrent to shorten its useful life simultaneously, and once there is error-polarity connection phenomenon, LED lamp pearl can be directly caused to be damaged.
Summary of the invention
This application provides a kind of LED circuit for lamp, with solve prior art exist LED lamp pearl due to overcurrent or error-polarity connection cause damage problem.
The application solves the technical scheme that its technical problem adopts:
A kind of LED circuit for lamp, primarily of current-limiting resistance, electric capacity, reverse-connection preventing circuit and some LED lamp pearls composition, reverse-connection preventing circuit comprises comparator, triode and relay, triode is arranged between comparator and relay, comparator is connected with electric capacity, relay is arranged on the input of external power source, and some current-limiting resistances are arranged between relay and some LED lamp pearls.
For being connected in parallel between above-mentioned current-limiting resistance.
Above-mentioned LED lamp pearl adopts dot matrix syndeton.
The application's structure is simple, with low cost, by arranging current-limiting resistance in existing LED circuit for lamp, operating current is limited by resistance, controlled current flow, effectively extend the working life of product, reverse-connection preventing circuit is set simultaneously, the people due to error-polarity connection can be prevented in installation and maintenance process to be burning of the element that causes and light source.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the application is further illustrated.
Fig. 1 is the circuit diagram of the application.
1 current-limiting resistance, 2 electric capacity, 3 comparators, 4 triodes, 5 relays, 6LED lamp pearl, 7 external power sources in figure.
Embodiment
As shown in the figure, a kind of LED circuit for lamp, form primarily of current-limiting resistance 1, electric capacity 2, reverse-connection preventing circuit and some LED lamp pearls 6, reverse-connection preventing circuit comprises comparator 3, triode 4 and relay 5, triode 4 is arranged between comparator 3 and relay 5, comparator 3 is connected with electric capacity 2, relay 5 is arranged on the input of external power source 7, some current-limiting resistances 1 arrange between relay 5 and some LED lamp pearls 6, for being connected in parallel between current-limiting resistance 1, LED lamp pearl 6 adopts dot matrix syndeton.
Claims (3)
1. a LED circuit for lamp, it is characterized in that primarily of current-limiting resistance, electric capacity, reverse-connection preventing circuit and some LED lamp pearls composition, reverse-connection preventing circuit comprises comparator, triode and relay, triode is arranged between comparator and relay, comparator is connected with electric capacity, relay is arranged on the input of external power source, and some current-limiting resistances are arranged between relay and some LED lamp bead.
2. LED circuit for lamp according to claim 1, is characterized in that between current-limiting resistance for being connected in parallel.
3. LED circuit for lamp according to claim 1, is characterized in that LED lamp pearl adopts dot matrix syndeton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510135730.7A CN104735835A (en) | 2015-03-26 | 2015-03-26 | Led lamp circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510135730.7A CN104735835A (en) | 2015-03-26 | 2015-03-26 | Led lamp circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104735835A true CN104735835A (en) | 2015-06-24 |
Family
ID=53459149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510135730.7A Pending CN104735835A (en) | 2015-03-26 | 2015-03-26 | Led lamp circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104735835A (en) |
-
2015
- 2015-03-26 CN CN201510135730.7A patent/CN104735835A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150624 |
|
| WD01 | Invention patent application deemed withdrawn after publication |