CN206686398U - A kind of high-voltage linear constant current anti-surge circuit - Google Patents
A kind of high-voltage linear constant current anti-surge circuit Download PDFInfo
- Publication number
- CN206686398U CN206686398U CN201720222680.0U CN201720222680U CN206686398U CN 206686398 U CN206686398 U CN 206686398U CN 201720222680 U CN201720222680 U CN 201720222680U CN 206686398 U CN206686398 U CN 206686398U
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- port
- bridge rectifier
- rectifier diode
- circuit
- constant current
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Abstract
The utility model discloses a kind of high-voltage linear constant current anti-surge circuit, one end of fuse is connected with fire-wire interfaces, and its other end is connected to the first port of bridge rectifier diode, one end of first adjustable resistance is connected to the common port of fuse and bridge rectifier diode, and its other end is connected to the common port of zero line interface and the port of bridge rectifier diode the 3rd；The second port of bridge rectifier diode is connected to one end of control chip after being connected successively with a plurality of Light-Emitting Diodes, the other end of control chip and the 4th port of bridge rectifier diode connect, and the common end grounding of the two；One end of electric capacity is connected to the common port of bridge rectifier diode second port and a plurality of light emitting diodes, and its other end is grounded.The circuital current is stable, and the voltage scope of application is wide and safe, and the set-up mode of electric capacity can prevent infringement of the surge current to circuit components.
Description
Technical field
The utility model belongs to constant-current circuit technical field, more particularly to a kind of high-voltage linear constant current anti-surge circuit.
Background technology
LED is diode element, has a basic resistance when energization, but due to its diode effect, be powered
LED can inherently generate heat afterwards；It is exactly and the more electric energy into light by the fraction energy conversion by electronics that LED is luminous
Consume in the form of heat, when heat is bigger, LED self-resistances will side it is small, resistance diminishes, and electric current will increase lasting increasing
Greatly, it is exactly that LED itself burns incrementally to go down, and the principle of constant current is provided in the electric current being applied in the range of certain voltage on LED
All the time in a manner of relative constancy by, even if so the change of LED itself resistances nor affects on the electric current passed through, so as to
LED normal work is ensure that, while the energy loss that electric current increase is brought can be reduced.
Especially under hyperbaric environment, voltage change more by a small margin can influence curent change larger in LED, and it should
It is indifferent to the power grid environment that fluctuates and have noise.Existing high-voltage constant-current circuit is complex, and is not easy to be applied to respectively
Kind is different mechanically.
The content of the invention
To solve the above problems, the purpose of this utility model is to provide a kind of high-voltage linear constant current anti-surge circuit, should
Circuit can ensure LED, and its operating current is stable at work, and not worked long hours in itself by LED is influenceed, and not by electricity
Press the influence of fluctuation.
Another purpose of the present utility model is to provide a kind of high-voltage linear constant current anti-surge circuit, and the circuit can be so as to
Victory is applied on various devices.
To achieve the above object, the technical solution of the utility model is as follows.
A kind of high-voltage linear constant current anti-surge circuit, the circuit include fuse, the first adjustable resistance, bridge rectifier two
Pole pipe, a plurality of light emitting diodes, electric capacity and two control chips, one end of the fuse are connected with fire-wire interfaces, and its
The other end is connected to the first port of bridge rectifier diode, and one end of first adjustable resistance is connected to fuse and bridge-type
The common port of commutation diode, and its other end is connected to the common port of zero line interface and the port of bridge rectifier diode the 3rd；
The second port of the bridge rectifier diode is connected to one end of control chip after being connected successively with a plurality of Light-Emitting Diodes,
The other end of the control chip and the 4th port of bridge rectifier diode connect, and the common end grounding of the two；The electricity
One end of appearance is connected to the common port of bridge rectifier diode second port and a plurality of light emitting diodes, and its another termination
Ground.
The circuit also includes the second adjustable resistance, and second adjustable resistance is in parallel with electric capacity, and the common port of the two
The common port of bridge rectifier diode second port and a plurality of light emitting diodes is connected to, another common end grounding of the two.
The setting of second adjustable resistance can play a protective effect strengthened to circuit, when light emitting diode and control chip occur
Failure or when needing to operate light emitting diode and control chip, the resistance of adjustable resistance is set to zero, you can make electricity
Stream all passes through from adjustable resistance and is finally grounded, and does not have electric current to flow through in light emitting diode and control chip.
The model MG2830 of the control chip.
The operating voltage of the control chip is 7-500V, and its outputting current steadily is 30mA.
The high-voltage linear constant current anti-surge circuit that the utility model is realized, the position of electric capacity is set in the circuit, can be with
Prevent infringement of the caused surge current to component in circuit in circuit；Other circuit can integrally ensure a plurality of LEDs
Its electric current is constant at work, reduces energy loss during LED long-term work；In addition, it can be into the voltage range born
Greatly, go for the device of the overwhelming majority, expand the scope of its application；Fuse on live wire can protect electricity well
The overall security in road, prevents fortuitous event from making all parts damages in circuit.
Brief description of the drawings
Fig. 1 is the circuit diagram that the utility model is implemented.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
High-voltage linear constant current anti-surge circuit shown in Figure 1, being realized by the utility model, the circuit include guarantor
Dangerous silk F1, the first adjustable resistance VAR1, bridge rectifier diode D1, a plurality of light emitting diode D2, electric capacity C1 and two controls
Chip, fuse F1 one end is connected with fire-wire interfaces L, and its other end is connected to bridge rectifier diode D1 first end
Mouthful, the first adjustable resistance VAR1 one end is connected to fuse F1 and bridge rectifier diode D1 common port, and its other end
It is connected to zero line interface N and the ports of bridge rectifier diode D2 the 3rd common port；Bridge rectifier diode D1 second port
One end of control chip, the other end and bridge rectifier of control chip are connected to after being connected successively with a plurality of Light-Emitting Diode D2
Diode D1 the 4th port connection, and the common end grounding of the two；Electric capacity C1 one end is connected to bridge rectifier diode D1
Second port and a plurality of light emitting diode D2 common port, and its other end is grounded.
The circuit also includes the second adjustable resistance VAR2, and the second adjustable resistance VAR2 is in parallel with electric capacity C1, and the two one
Common port is connected to the common port of bridge rectifier diode D1 second ports and a plurality of light emitting diode D2, another public affairs of the two
End ground connection altogether.Second adjustable resistance VAR2 effect essentially consists in protection circuit entirety, and is advantageous to maintenance to circuit with changing
Make.When the second adjustable resistance VAR2 resistance value is adjusted to 0, electric current will not flow through light emitting diode D2 and control chip；This
Sample, it can be overhauled and replaced by adjusting its resistance when light emitting diode D2 or control chip break down, and
The normal work of circuit is not influenceed.
The model MG2830 of control chip.MG2830 can be used as current source or current sink to use, and internal
Intelligent temperature regulation chip is provided with, when the junction temperature of chip is more than about 110 degrees Celsius, the output current of chip can be from nominal value
Reduce.If junction temperature persistently rises to 150-160 degrees centigrades, the output current of secondary chip can be down to extremely low.Electric current drops
Low, the power consumption on chip can be reduced, and junction temperature can decline.When junction temperature descends below 110 degrees Celsius, the output current of chip is excellent
Favour recovers all normal values automatically.It is secondary can only regulatory function allow LED drive chip continuous firing at relatively high temperatures, avoid chip mistake
Cause thermal damage enters overheat protector positive closing state.
The operating voltage of control chip is 7-500V, and its outputting current steadily is 30mA.Operating voltage is 7-500V energy
The circuit using the overwhelming majority is enough enabled the circuitry to, outputting current steadily is that 30mA can ensure the feelings of LED normal work
Power consumption is reduced as far as under condition, reaches the effect of an energy-saving and emission-reduction,
The high-voltage linear constant current anti-surge circuit that the utility model is realized, it is ensured that a plurality of LEDs are at work
Its electric current is constant, reduces energy loss during LED long-term work；In addition, it can be big into the voltage range born, Ke Yishi
For the device of the overwhelming majority, its scope applied is expanded；Fuse F1 on live wire can well protection circuit it is overall
Security, prevent fortuitous event from making all parts damages in circuit.
Preferred embodiment of the present utility model is these are only, it is all in this practicality not to limit the utility model
All any modification, equivalent and improvement made within new spirit and principle etc., should be included in guarantor of the present utility model
Within the scope of shield.
Claims (3)
- A kind of 1. high-voltage linear constant current anti-surge circuit, it is characterised in that the circuit include fuse, the first adjustable resistance, Bridge rectifier diode, a plurality of light emitting diodes, electric capacity and two control chips, one end of the fuse and fire-wire interfaces Connection, and its other end is connected to the first port of bridge rectifier diode, one end of first adjustable resistance is connected to guarantor The common port of dangerous silk and bridge rectifier diode, and its other end is connected to zero line interface and the port of bridge rectifier diode the 3rd Common port；The second port of the bridge rectifier diode is connected to control core after being connected successively with a plurality of Light-Emitting Diodes One end of piece, the other end of the control chip and the 4th port of bridge rectifier diode connect, and the public termination of the two Ground；One end of the electric capacity is connected to the common port of bridge rectifier diode second port and a plurality of light emitting diodes, and its The other end is grounded.
- 2. high-voltage linear constant current anti-surge circuit as claimed in claim 1, it is characterised in that it is adjustable that the circuit also includes second Resistance, second adjustable resistance is in parallel with electric capacity, and the common port of the two is connected to bridge rectifier diode second port With the common port of a plurality of light emitting diodes, another common end grounding of the two.
- 3. high-voltage linear constant current anti-surge circuit as claimed in claim 1, it is characterised in that the control chip is MG2830.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720222680.0U CN206686398U (en) | 2017-03-08 | 2017-03-08 | A kind of high-voltage linear constant current anti-surge circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720222680.0U CN206686398U (en) | 2017-03-08 | 2017-03-08 | A kind of high-voltage linear constant current anti-surge circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206686398U true CN206686398U (en) | 2017-11-28 |
Family
ID=60392683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720222680.0U Expired - Fee Related CN206686398U (en) | 2017-03-08 | 2017-03-08 | A kind of high-voltage linear constant current anti-surge circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206686398U (en) |
-
2017
- 2017-03-08 CN CN201720222680.0U patent/CN206686398U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171128 |