CN206498559U - A kind of power starting circuit, power supply and LED - Google Patents
A kind of power starting circuit, power supply and LED Download PDFInfo
- Publication number
- CN206498559U CN206498559U CN201621309503.8U CN201621309503U CN206498559U CN 206498559 U CN206498559 U CN 206498559U CN 201621309503 U CN201621309503 U CN 201621309503U CN 206498559 U CN206498559 U CN 206498559U
- Authority
- CN
- China
- Prior art keywords
- power
- voltage
- node
- starting circuit
- npn triode
- 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.)
- Active
Links
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The utility model provides a kind of power starting circuit, power supply and LED, and the power starting circuit includes first resistor, second resistance, NPN triode and electric capacity；The first end of the first resistor is connected with first node, and the second end is connected with Section Point；The first end of the second resistance is connected with first node, and the second end is connected with the colelctor electrode of the NPN triode；The emitter-base bandgap grading of the NPN triode is connected with the 3rd node；The first end of the electric capacity is connected with the 3rd node, the second end ground connection；The first node is connected with the first power end, and the base stage connection of the Section Point and NPN triode, the 3rd node is connected with second source end.The utility model can reduce power on time, meet the demand of quick starting power supply.
Description
Technical field
The utility model is related to electronic circuit technology field, and in particular to a kind of power starting circuit, power supply and LED.
Background technology
LED (Lighting Emitting Diode, light emitting diode), with the spy such as energy-saving and environmental protection, efficient, safety
Point, therefore, is widely used in the illumination occasion such as landscape, street lamp and electronic product backlight.
In the market, the startup time requirement to LED lamp is more and more faster, it is existing to LED lamp start startup when
Between can not meet user or the market demand.
Utility model content
For defect of the prior art, the utility model provides a kind of power starting circuit, power supply and LED, this reality
With the new demand that can be reduced power on time, meet quick starting power supply.
In order to solve the above technical problems, the utility model provides following technical scheme：
In a first aspect, the utility model provides a kind of power starting circuit, including：First resistor, second resistance, NPN
Triode and electric capacity；
Wherein, the first end of the first resistor is connected with first node, and the second end is connected with Section Point；
The first end of the second resistance is connected with first node, and the second end is connected with the colelctor electrode of the NPN triode；
The emitter-base bandgap grading of the NPN triode is connected with the 3rd node；
The first end of the electric capacity is connected with the 3rd node, the second end ground connection；
Wherein, the first node is connected with the first power end, the base stage connection of the Section Point and NPN triode,
3rd node is connected with second source end.
Further, the power starting circuit also includes：Voltage-regulator diode, the negative pole of the voltage-regulator diode and second
Node is connected, plus earth.
Further, the power starting circuit also includes：Diode and 3rd resistor；
The negative pole of the diode is connected with the 3rd node, the first end connection of positive pole and 3rd resistor；
Second end of the 3rd resistor is connected with the 3rd power end.
Further, first power end is：Voltage end of the alternating voltage after over commutation.
Further, the second source end is：The Vcc inputs of the IC of power supply.
Further, the 3rd power end is：The voltage end of transformer assists winding, the transformer assists winding is used
In the voltage that steady operation is provided by 3rd resistor and diode pair second source end.
Second aspect, the utility model additionally provides a kind of power supply, including power starting circuit as described above.
The third aspect, the utility model additionally provides a kind of LED, including power starting circuit as described above.
As shown from the above technical solution, the power starting circuit that the utility model is provided, makees as a result of NPN triode
For power initiation device, compared with the prior art by the use of metal-oxide-semiconductor as the scheme of power initiation device, with the time of startup
It is short, the fast advantage of toggle speed.Because：Metal-oxide-semiconductor starting pinciple of the prior art drives for voltage, and NPN triode
Starting pinciple driven for electric current, the requirement due to NPN triode to voltage is a PN junction (between be grade be 0.7V), because
As long as this voltage, which rises to 1V, which allows for NPN triode, to turn on quickly.And metal-oxide-semiconductor of the prior art is voltage driving, voltage
Must be raised to could start to a certain degree, so needing to increase an electric capacity electric power storage before metal-oxide-semiconductor, voltage is reached metal-oxide-semiconductor
Normal startup voltage, just because of electric power storage is so can delay some times, therefore have impact on power initiation speed.And this practicality is new
The power starting circuit that type is provided, because NPN triode base terminal need not configure electric capacity, therefore NPN triode can be with moment
Conducting, so that second source end can be rapidly reached power supply IC cut-in voltage.Therefore, power initiation moment passes through this implementation
The start-up circuit that example is provided carries out charging to the IC of driving power supply Vcc pins and reaches the purpose quickly started.
Brief description of the drawings
, below will be to embodiment or existing skill in order to illustrate more clearly of the present embodiment or technical scheme of the prior art
The accompanying drawing used required in art description is briefly described, it should be apparent that, drawings in the following description are the utility model
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is a kind of structural representation for the power starting circuit that the embodiment of the utility model one is provided；
Fig. 2 is another structural representation for the power starting circuit that the embodiment of the utility model one is provided；
Fig. 3 shows that the first power end V1, second source end V2 in Fig. 2 and the 3rd power end V3's implements shape
Formula.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, clear, complete description is carried out to the technical scheme in the utility model embodiment, it is clear that retouched
The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to
The scope of the utility model protection.
The embodiment of the utility model one provides a kind of power starting circuit, and referring to Fig. 1, the power starting circuit includes：
First resistor R1, second resistance R2, NPN triode Q and electric capacity C；
Wherein, the first end of the first resistor R1 is connected with first node Node1, and the second end is connected with Section Point；
The first end of the second resistance R2 is connected with first node Node1, the second end and the current collection of the NPN triode
Pole is connected；
The emitter-base bandgap grading of the NPN triode Q is connected with the 3rd node Node3；
The first end of the electric capacity C is connected with the 3rd node Node3, the second end ground connection；
Wherein, the first node Node1 is connected with the first power end V1, the Section Point Node2 and NPN triode
Q base stage connection, the 3rd node Node3 is connected with second source end V2.
It is understood that the second source end V2 can be：The Vcc inputs of the IC of power supply.
As seen from the above description, the power starting circuit that the present embodiment is provided, power supply is used as a result of NPN triode
Starter, it is short with the time of startup compared with the prior art by the use of metal-oxide-semiconductor as the scheme of power initiation device, open
Move fireballing advantage.Because：Metal-oxide-semiconductor starting pinciple of the prior art drives for voltage, and the startup of NPN triode
Principle drives for electric current, and the requirement due to NPN triode to voltage is a PN junction (being 0.7V between be grades), as long as therefore
Voltage rises to 1V and allows for NPN triode and can turn on quickly.And metal-oxide-semiconductor of the prior art is voltage driving, voltage must rise
It could start to a certain extent, so needing to increase an electric capacity electric power storage before metal-oxide-semiconductor, voltage is reached the normal of metal-oxide-semiconductor
Start voltage, just because of electric power storage is so can delay some times, therefore have impact on power initiation speed.And what the present embodiment was provided
Power starting circuit, because NPN triode base terminal need not configure electric capacity, therefore NPN triode can be with transient switching, therefore makes
Power supply IC cut-in voltage can be rapidly reached by obtaining second source end.Therefore, power initiation moment is provided by the present embodiment
Start-up circuit carries out charging to the IC of driving power supply Vcc pins and reaches the purpose quickly started.In addition, what the present embodiment was provided
Power starting circuit, simple in construction, the component used is few, and cost is relatively low, facilitates yield to use.
In a kind of optional embodiment, referring to Fig. 2, the power starting circuit also includes：Voltage-regulator diode ZD1, institute
The negative pole for stating voltage-regulator diode ZD1 is connected with Section Point Node2, plus earth.
Referring to Fig. 2, the voltage that voltage-regulator diode ZD1 can be in clamper NPN triode Q base stages so that be grades of electricity of NPN triode
Pressure should not be overshooted, and play a part of protecting NPN triode.
In a kind of optional embodiment, referring to Fig. 3, the first power end V1 is：Alternating voltage is after over commutation
Voltage end Vbus.The second source end V2 is：The Vcc inputs of the IC of power supply.The 3rd power end V3 is：
The voltage end Va of transformer assists winding, the transformer assists winding is used to pass through 3rd resistor and diode pair second source
End provides the voltage of steady operation.
In a kind of optional embodiment, referring to Fig. 2, the power starting circuit also includes：Diode D and 3rd resistor
R3；
Wherein, the negative pole of the diode D is connected with the 3rd node Node3, and the first end of positive pole and 3rd resistor R3 connects
Connect；
The second end of the 3rd resistor R3 is connected with the 3rd power end V3.
Alternatively, the 3rd power end V3 is the voltage end of transformer assists winding, and the transformer assists winding is used to lead to
Cross 3rd resistor and diode pair second source end provides the voltage of steady operation.Because the power starting circuit shown in Fig. 1 increases
Add power consumption, so referring to Fig. 2, a transformer assists winding is provided with the power starting circuit that the present embodiment is provided,
So that transformer assists winding provides a voltage and provides steady operation to second source end by 3rd resistor R3 and diode D
Voltage.It is understood that vcc of the second source end for the Vcc inputs, the as IC of power supply of the IC of power supply
Pin provides the voltage of steady operation, to improve power-efficient.Assuming that no 3rd resistor R3 and diode D, shown in Fig. 1
Power starting circuit will always be in working condition, and the efficiency of such power supply naturally can be much lower, therefore the present embodiment is shown in Fig. 1
Circuit in add 3rd resistor R3 and diode D, by 3rd resistor R3 and diode D the power supply shown in Fig. 1 is opened
Dynamic circuit completes power cut-off after startup task.For example, with reference to Fig. 3, when the transformer assists winding Va voltages for feeding back to Vcc make
When obtaining the voltage difference between ZD1 and Vcc less than NPN triode Q bases shooting threshold voltage, NPN triode Q cut-offs.
Described in detail with reference to the operation principle of Fig. 3 power starting circuits provided the utility model.
The power starting circuit that the utility model is provided includes resistance R1, resistance R2, resistance R3, electric capacity C, voltage-regulator diode
ZD1, diode D, NPN triode Q, described resistance R1 one end and R2 are connected with the voltage Vbus after rectification, and the resistance R1 is another
The base stage of one termination voltage-regulator diode ZD1 negative poles and NPN triode Q, described resistance R2 one end and R1 and rectified voltage Vbus
Connection, the resistance R2 other ends are connected with the colelctor electrode of the NPN triode Q, emitter-base bandgap grading and the electric capacity C of the NPN triode Q
One end and diode D negative pole connection, the positive pole of the diode D is connected with resistance R3 one end, and the resistance R3's is another
One end is connected with the anode Va of transformer assists winding, and positive pole, the electric capacity C other end of the voltage-regulator diode ZD1 are grounded.
Preferably, the diode D is quick recovery-type diode.
The power starting circuit that the utility model is provided is reduces the circuit of power on time, when power switch is opened
Afterwards, voltage Vbus of the AC voltages after rectifier bridge is powered, when voltage reaches NPN by resistance R1 to NPN triode Q base stages
Q is turned on during triode Q unlatching threshold voltage, and Vbus voltages charge by NPN triode Q, to electric capacity C, the electricity on electric capacity C
When pressure reaches power supply IC cut-in voltage, power supply IC starts, power work.Make NPN triode Q's when electric capacity C voltage is charged to
When Vbe voltages open gate valve voltage less than NPN type triode, NPN triode Q is closed.Because Q base terminals are configured without electric capacity, NPN
Triode Q can be with transient switching, and the voltage vcc on C1 can reach rapidly IC cut-in voltage.In addition, when transformer auxiliary around
When group Va feeds back to Vcc voltage so that the voltage difference between ZD1 and Vcc is less than NPN triode Q bases shooting threshold voltage, NPN tri-
Pole pipe Q ends.
Based on identical design, another embodiment of the utility model provides a kind of power supply, and the power supply is included as above
Power starting circuit described in embodiment.
Because the power supply that the present embodiment is provided includes power starting circuit recited above, therefore the electricity that the present embodiment is provided
Source has the advantage quickly started, it is thus possible to meet the application scenario that some needs power supplys quickly start.
It is understood that the power supply described in the present embodiment can be portable power source, or fixed power source.
Based on identical design, the another embodiment of the utility model provides a kind of LED, and the LED is included as above
Power starting circuit described in the embodiment of face.
Due to the present embodiment provide LED include power starting circuit recited above, therefore the present embodiment provide
LED has the advantage quickly started, it is thus possible to meet the application demand quickly started.
It is understood that the LED described in the present embodiment, can be electronic product backlight, Landscape Lamp or street lamp.
Above example is merely to illustrate the technical solution of the utility model, rather than its limitations；Although with reference to foregoing reality
Example is applied the utility model is described in detail, it will be understood by those within the art that：It still can be to preceding
State the technical scheme described in each embodiment to modify, or equivalent substitution is carried out to which part technical characteristic；And these
Modifications or substitutions, do not make the essence of appropriate technical solution depart from the spirit and model of each embodiment technical scheme of the utility model
Enclose.
Claims (8)
1. a kind of power starting circuit, it is characterised in that including：First resistor, second resistance, NPN triode and electric capacity；
Wherein, the first end of the first resistor is connected with first node, and the second end is connected with Section Point；
The first end of the second resistance is connected with first node, and the second end is connected with the colelctor electrode of the NPN triode；
The emitter-base bandgap grading of the NPN triode is connected with the 3rd node；
The first end of the electric capacity is connected with the 3rd node, the second end ground connection；
Wherein, the first node is connected with the first power end, the base stage connection of the Section Point and NPN triode, described
3rd node is connected with second source end.
2. power starting circuit according to claim 1, it is characterised in that also include：Voltage-regulator diode, the voltage stabilizing two
The negative pole of pole pipe is connected with Section Point, plus earth.
3. power starting circuit according to claim 2, it is characterised in that also include：Diode and 3rd resistor；
The negative pole of the diode is connected with the 3rd node, the first end connection of positive pole and 3rd resistor；
Second end of the 3rd resistor is connected with the 3rd power end.
4. the power starting circuit according to any one of claims 1 to 3, it is characterised in that first power end is：Hand over
Flow voltage end of the voltage after over commutation.
5. the power starting circuit according to any one of claims 1 to 3, it is characterised in that the second source end is：Electricity
The Vcc inputs of the IC in source.
6. power starting circuit according to claim 3, it is characterised in that the 3rd power end is：Transformer is aided in
The voltage end of winding, the transformer assists winding is used to provide stable work by 3rd resistor and diode pair second source end
The voltage of work.
7. a kind of power supply, it is characterised in that including the power starting circuit as described in any one of claim 1~6.
8. a kind of LED, it is characterised in that including the power starting circuit as described in any one of claim 1~6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621309503.8U CN206498559U (en) | 2016-11-30 | 2016-11-30 | A kind of power starting circuit, power supply and LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621309503.8U CN206498559U (en) | 2016-11-30 | 2016-11-30 | A kind of power starting circuit, power supply and LED |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206498559U true CN206498559U (en) | 2017-09-15 |
Family
ID=59800343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621309503.8U Active CN206498559U (en) | 2016-11-30 | 2016-11-30 | A kind of power starting circuit, power supply and LED |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206498559U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108112120A (en) * | 2017-12-16 | 2018-06-01 | 无锡昌至盛机械制造有限公司 | A kind of high-voltage high-speed start-up circuit of low-power consumption |
-
2016
- 2016-11-30 CN CN201621309503.8U patent/CN206498559U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108112120A (en) * | 2017-12-16 | 2018-06-01 | 无锡昌至盛机械制造有限公司 | A kind of high-voltage high-speed start-up circuit of low-power consumption |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206251406U (en) | A kind of single live wire soft-touch control power-supply circuit | |
| CN201956899U (en) | Special circuit for accelerating start-up and LED drive circuit adopting same | |
| CN206498559U (en) | A kind of power starting circuit, power supply and LED | |
| CN205082022U (en) | Quick starting circuit of power | |
| CN203934046U (en) | A kind of LED drive circuit | |
| CN205071365U (en) | Emitting diode lighting drive circuit and lamps and lanterns | |
| CN206963131U (en) | A kind of capacitance current-limiting type LED drive power circuit | |
| CN206564464U (en) | A kind of current foldback circuit without sample resistance | |
| CN106304517A (en) | A kind of super wide voltage constant current Universal LED lamp drive circuit | |
| CN205491299U (en) | LED street lamp constant voltage power supply circuit | |
| CN204271611U (en) | A kind of alternating current inputting over/under voltage protective circuit | |
| CN204119612U (en) | 10w led drive circuit | |
| CN203289700U (en) | Novel drive power supply with light-emitting diode | |
| CN206820655U (en) | A kind of chip high voltage power supply circuit | |
| CN207166361U (en) | A kind of LED fan lamp | |
| CN205378292U (en) | Excessive pressure undervoltage protection LED lamp | |
| CN204119573U (en) | 5w led drive circuit | |
| CN205017204U (en) | Zero power consumption release circuit for anti -interference capacitors on switching power supply AC end | |
| CN205546058U (en) | Intelligence LED power control circuit | |
| CN205546040U (en) | Automatic pressure regulating LED control circuit | |
| CN105207456B (en) | Anti-interference capacitor zero-power release circuit on Switching Power Supply AC ends | |
| CN204145801U (en) | LED drive power | |
| CN204761573U (en) | Novel LED TV flyback converter | |
| CN206181502U (en) | Quick starting circuit of extra low voltage | |
| CN203467004U (en) | Light-adjustable LED drive power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 335400 Guixi Industrial Park No. 1, Yingtan City, Jiangxi Province Co-patentee after: Midea Group Co., Ltd. Patentee after: Meizhi Photoelectric Technology Co., Ltd. Address before: 335400 Luohe Industrial Park No. 1, Guixi City, Yingtan City, Jiangxi Province Co-patentee before: Midea Group Co., Ltd. Patentee before: Jiangxi Meidi Guiya Lighting Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200605 Address after: 335400 No. 1 Industrial Park, Yingtan, Jiangxi, Guixi Patentee after: MEIZHI PHOTOELECTRIC TECHNOLOGY Co.,Ltd. Address before: 335400 No. 1 Industrial Park, Yingtan, Jiangxi, Guixi Co-patentee before: MIDEA GROUP Co.,Ltd. Patentee before: MEIZHI PHOTOELECTRIC TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 335400 No. 1 Industrial Park, Yingtan, Jiangxi, Guixi Patentee after: Meizhi Optoelectronic Technology Co., Ltd Address before: 335400 No. 1 Industrial Park, Yingtan, Jiangxi, Guixi Patentee before: MEIZHI PHOTOELECTRIC TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |