CN103716936A - Inductor boost LED power supply circuit - Google Patents
Inductor boost LED power supply circuit Download PDFInfo
- Publication number
- CN103716936A CN103716936A CN201210372482.4A CN201210372482A CN103716936A CN 103716936 A CN103716936 A CN 103716936A CN 201210372482 A CN201210372482 A CN 201210372482A CN 103716936 A CN103716936 A CN 103716936A
- Authority
- CN
- China
- Prior art keywords
- triode
- power supply
- led power
- resistor
- collector electrode
- 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
Links
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses an inductor boost LED power supply circuit. The collector of a first triode is connected with the positive electrode of a power supply through an inductor. The collector of a second triode and the control base of the first triode are connected with the positive electrode through a junction type field effect transistor. The base forms a feedforward network through a resistor and a capacitor, and is connected with the collector of the first triode. The inductor forms a discharge circuit through a diode, a pull-up resistor and a third triode. The gate of the junction type field effect transistor is connected with the collector of the third triode. The diode and the pull-up resistor are connected with the positive electrode through an energy storage capacitor. According to the invention, LED power supply can be realized by using the simplest circuit structure, so that the circuit volume is reduced, and the inductor boost LED power supply circuit has the advantages of low cost and easy mass production.
Description
Technical field
The present invention relates to a kind of LED power supply circuits, relate in particular to a kind of inductance boost LED power supply circuits.
Background technology
The advantages such as LED illumination is at present more and more welcomed by the people, and wherein white LED lamp has low pressure, low-power consumption, reliability is high, the life-span is long, obtain a large amount of popularizing.And in order to reach the illuminating effect of high brightness, conventionally select LED to carry out serial or parallel connection, and the very small voltage that only needs in parallel, but need to make the brightness of each LED in parallel consistent by steady resistance or current source, and this mode easily makes the lost of life of LED, and can make electric current consistent in series connection, but need apply high voltage, and currently used circuit more complicated, volume is large, be unfavorable for producing small size product, and cost is large.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, inductance boost LED power supply circuits are provided.Can low cost realize LED power supply circuits.
In order to solve the problems of the technologies described above, the embodiment of the present invention provides a kind of inductance boost LED power supply circuits, and wherein, the collector electrode of the first triode connects positive source by inductance; The collector electrode of the second triode is connected anodal with the first triode control base stage by technotron, base stage forms by resistance capacitance the collector electrode that feedforward network is connected in the first triode, described inductance forms discharge loop by diode, pull-up resistor, the 3rd triode, the gate pole of described technotron connects the collector electrode of described the 3rd triode, described in.Diode, pull-up resistor also connect anodal by storage capacitor.
Implement the embodiment of the present invention, there is following beneficial effect: can utilize simple and convenient circuit structure to realize LED power supply, make circuit volume-diminished, and cost be low, be easy to batch production.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail.
With reference to the electrical block diagram of the present invention shown in Fig. 1.
Circuit structure of the present invention is divided into two parts, by the first triode Q1 and the second triode Q2, forms booster circuit; By the 3rd triode Q3 and technotron JFET, form boost control circuit.
The collector electrode of the first triode Q1 connects positive source by inductance L 1, the collector electrode of the second triode Q2 is connected positive source with the base stage of the first triode by technotron JFET, the base stage of the second triode Q2 is by resistance R 1, the feedforward network that capacitor C 1 composes in parallel is connected in the collector electrode of the first triode Q1, inductance L 1 is by diode SD1, pull-up resistor R4, the collector electrode of the 3rd triode Q3 forms discharge loop, the gate pole of technotron JFET is connected with the collector electrode of the 3rd triode Q3, diode SD1, pull-up resistor R4 also connects positive source by storage capacitor.
Above disclosed is only a kind of preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, and the equivalent variations of therefore doing according to the claims in the present invention, still belongs to the scope that the present invention is contained.
Claims (1)
1. inductance boost LED power supply circuits, is characterized in that, the collector electrode of the first triode connects positive source by inductance; The collector electrode of the second triode is connected anodal with the base stage of the first triode by technotron, base stage forms by resistance capacitance the collector electrode that feedforward network is connected in the first triode, described inductance forms discharge loop by diode, pull-up resistor, the 3rd triode, the gate pole of described technotron connects the collector electrode of described the 3rd triode, and described diode, pull-up resistor also connect anodal by storage capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210372482.4A CN103716936A (en) | 2012-09-29 | 2012-09-29 | Inductor boost LED power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210372482.4A CN103716936A (en) | 2012-09-29 | 2012-09-29 | Inductor boost LED power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103716936A true CN103716936A (en) | 2014-04-09 |
Family
ID=50409370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210372482.4A Pending CN103716936A (en) | 2012-09-29 | 2012-09-29 | Inductor boost LED power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103716936A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107402053A (en) * | 2017-08-07 | 2017-11-28 | 上海信通机电工程有限公司 | Two-wire system contact-type electronic level-sensing device |
-
2012
- 2012-09-29 CN CN201210372482.4A patent/CN103716936A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107402053A (en) * | 2017-08-07 | 2017-11-28 | 上海信通机电工程有限公司 | Two-wire system contact-type electronic level-sensing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102105007B (en) | LED constant-current driver with boosting function | |
| CN203027561U (en) | Alternating current driving device for LED (light-emitting diode) light source and LED bulb lamp | |
| CN203761633U (en) | Energy-saving LED traffic light with long service life | |
| CN201937925U (en) | LED constant current driver with function of voltage reduction | |
| CN103716936A (en) | Inductor boost LED power supply circuit | |
| CN204616179U (en) | The fiery power taking auxiliary circuit of a kind of novel list | |
| CN203151827U (en) | Ultra-long-life large-current light emitting diode (LED) drive power circuit | |
| CN202026511U (en) | LED constant current constant voltage electricity obtaining system | |
| CN201937923U (en) | LED constant-current driver of DC/DC pressure-boosting transformation | |
| CN203136259U (en) | LED power supply four-in-one light modulation circuit | |
| CN203840610U (en) | LED circuit having stand-by power source circuit | |
| CN205847668U (en) | A kind of linear light-adjustable LED lamp | |
| CN203840613U (en) | LED circuit | |
| CN203206547U (en) | Timing boost bidirectional controller for battery lamp | |
| CN204258650U (en) | Resistance-capacitance depressurization power circuit | |
| CN203618187U (en) | Boosted circuit of constant current boosted power source of LED energy-saving lamp | |
| CN203801129U (en) | High-efficiency low-cost LED driving circuit | |
| CN102858065B (en) | Universal direct-current LED driving power source | |
| CN203608437U (en) | LED power supply with PFC circuit | |
| CN203378125U (en) | High brightness LED flashlight with single battery | |
| CN203180772U (en) | Converter used for photovoltaic power generation system | |
| CN102843829A (en) | Constant-current light-emitting circuit for electronic candle | |
| CN203057586U (en) | An energy-saving lamp circuit system | |
| CN202818684U (en) | Constant current driving power supply for tubular LED lamp | |
| CN206314025U (en) | It is a kind of to control boost pressure controller for the PWM that LED drives |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140409 |