CN207603203U - A kind of overcurrent and overvoltage protector - Google Patents
A kind of overcurrent and overvoltage protector Download PDFInfo
- Publication number
- CN207603203U CN207603203U CN201721615425.9U CN201721615425U CN207603203U CN 207603203 U CN207603203 U CN 207603203U CN 201721615425 U CN201721615425 U CN 201721615425U CN 207603203 U CN207603203 U CN 207603203U
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- varistor
- wire resistor
- overcurrent
- overvoltage protector
- power input
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- 230000001012 protector Effects 0.000 title claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 230000009102 absorption Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model is related to a kind of overcurrent and overvoltage protector, applied to LED linear power supply and LED lamp.The device, including power input, Qiao Dui, DC DC modules and the load being sequentially ingressed into, it is characterized in that, the first wire resistor, the second wire resistor, the first varistor and the second varistor are further included, L, the N-terminal of the power input concatenate the first wire resistor, the second wire resistor respectively；Voltage before the first varistor clamper bridge heap, voltage after the second varistor clamper bridge heap, the first coiling, the second wire resistor absorb power input and cross stream energy, and Y1 absorbs residual amount of energy, can play the role of over-current over-voltage protection to whole system.
Description
Technical field
The utility model is related to a kind of overcurrent and overvoltage protector, applied to LED linear power supply and LED lamp.
Background technology
Traditional LED linear power supply AC ends have the heavy impulse current high voltage of moment sometimes, lead to the linear power supply service life
Shorten, damage the personal safety for even threatening user.The LED linear power supply of the prior art be by AC-DC rectification modules and
LED load two parts form, without corresponding over-current over-voltage protection circuit.
Utility model content
The utility model aim is that the above-mentioned problems in the prior art can be solved by providing one kind, develop one kind
Overcurrent and overvoltage protector.
The utility model aim is achieved through the following technical solutions：
A kind of overcurrent and overvoltage protector, applied to LED linear power supply and LED lamp, the device, including what is be sequentially ingressed into
It is power input, Qiao Dui, DC-DC module and load, it is characterized in that, further include the first wire resistor, the second wire resistor,
One varistor and the second varistor, L, the N-terminal of the power input concatenate the first wire resistor, the second coiling electricity respectively
Resistance；Voltage before the first varistor clamper bridge heap, voltage after the second varistor clamper bridge heap, the first coiling, second
Wire resistor absorbs power input and crosses stream energy, and Y1 absorbs residual amount of energy.
Preferably, a safety Y1 capacitance is further included, the capacitance and the first varistor, AC-DC conversion bridge heap phase
Even, it and is grounded.
Preferably, fuse is further included, the L ends concatenation fuse of power input.
Preferably, first wire resistor and the second wire resistor power is the wire resistor of 2W or more.
Preferably, the pressure voltage of first varistor is higher than the pressure voltage of the second varistor.
Preferably, if the first varistor uses 10D471K, then the second varistor then uses 10D431K.
Preferably, the load is LED module.
Compared with prior art, the technical program has the following advantages that：
1st, power input have instantaneous large-current high voltage by when, the first wire resistor and the second wire resistor can absorb
The spike energy of a part of surge has certain cushioning effect；
2nd, when having energy to enter between L-N, the first varistor and the second varistor have good protective effect, are
It unites simple in structure, the reaction time is fast；
3rd, safety Y1 capacitive absorptions residual amount of energy.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that the accompanying drawings in the following description is only
Some embodiments of the utility model, for those of ordinary skill in the art, without creative efforts,
It can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is traditional LED linear power circuit diagram.
Fig. 2 is the circuit diagram of the utility model embodiment.
Label declaration：Power input 1, AC-DC conversion bridge heap 2, AC-DC rectification modules 3, load the 4, first coiling electricity
Hinder the 5, second wire resistor 6, the first varistor 7, the second varistor 8, safety Y1 capacitances 9, fuse 10.
Specific embodiment
Illustrate the utility model below in conjunction with specific embodiment, the following example is merely to illustrate the skill of the utility model
Art scheme, does not limit the scope of protection of the utility model.
Embodiment：
As illustrated in fig. 1 and 2, the product of the present embodiment is a kind of overcurrent and overvoltage protector, including the power supply being sequentially ingressed into
Input terminal 1, bridge heap 2, DC-DC module 3 and load 4, load 4 therein is LED module, and the present embodiment further comprises first
Wire resistor 5, the second wire resistor 6, the first varistor 7 and the second varistor 8, L, the N-terminal of power input 1 are gone here and there respectively
The first wire resistor 5, the second wire resistor 6 are connect, the first wire resistor 5 and the second wire resistor 6 are the coiling electricity of 2W power
Resistance；Voltage before first varistor, 7 clamper AC-DC conversion bridge heap 2, after 8 clamper AC-DC conversion bridge heap 2 of the second varistor
Voltage；The pressure voltage of first varistor 7 is higher than the pressure voltage of the second varistor 8, and the first varistor 7 uses 10D471K,
So the second varistor 8 then uses 10D431K.
The present embodiment further includes a safety Y1 capacitance 9, the capacitance and the first varistor 7,2 phase of AC-DC conversion bridge heap
Even, it and is grounded, and further include fuse 10, the L ends concatenation fuse 10 of power input 1.
Operation principle：
Power input 1 have instantaneous large-current high voltage by when, the first wire resistor 5 and the second wire resistor 6 can be inhaled
The spike energy of a part of surge is received, there is certain cushioning effect, it is proposed that uses the wire resistor of 2W or more power；First pressure
Voltage before quick 7 clamper rectifier bridge of resistance, voltage after 8 clamper rectifier bridge of the second varistor are equivalent to second protection, and the two absorbs
Energy prevents excessively high voltage from entering DC-DC module 3 and LED module, while remaining energy can be led by safety Y1 capacitances 9
To the earth, so as to play preferable protective effect to whole system.When doing lightning test, when thering is energy to enter between L-N, first
7 and second varistor 8 of varistor has good protective effect；When having energy to enter between L-GND, signal passes through first
Enter greatly in 9 energy circuit of wire resistor the 5-the first varistor 7-safety Y1 capacitances；When thering is energy to enter between N-GND,
Signal is entered greatly by second 6-ground capacity of wire resistor, 9 energy circuit, and system structure is simple, and the reaction time is fast.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of parts and components is named
Title etc. can be different.The equivalent or simple change that all construction, feature and principles according to described in the utility model patent concept are done,
It is included in the protection domain of the utility model patent.Those skilled in the art of the present invention can be to being retouched
The specific embodiment stated does various modifications or additions or substitutes in a similar way, without departing from the utility model
Structure or surmount range defined in the claims, all should belong to the protection range of the utility model.
Claims (7)
1. a kind of overcurrent and overvoltage protector, including the power input, AC-DC conversion bridge heap, AC-DC rectifications being sequentially ingressed into
Module and load, it is characterized in that, further include the first wire resistor, the second wire resistor, the first varistor and the second pressure-sensitive electricity
Resistance, L, the N-terminal of the power input concatenate the first wire resistor, the second wire resistor respectively；First varistor
Voltage before clamper AC-DC conversion bridge heap, voltage after the second varistor clamper AC-DC conversion bridge heap.
2. overcurrent and overvoltage protector according to claim 1, it is characterized in that, further include a safety Y1 capacitance, the electricity
Appearance is connected, and be grounded with the first varistor, AC-DC conversion bridge heap.
3. overcurrent and overvoltage protector according to claim 1, it is characterized in that, further include fuse, the L of power input
End concatenation fuse.
4. overcurrent and overvoltage protector according to claim 1, it is characterized in that, first wire resistor and second
Wire resistor power is the wire resistor of 2W or more.
5. overcurrent and overvoltage protector according to claim 1, it is characterized in that, the pressure resistance of first varistor
Value is higher than the pressure voltage of the second varistor.
6. overcurrent and overvoltage protector according to claim 5, it is characterized in that, if the first varistor uses
10D471K, then the second varistor then uses 10D431K.
7. overcurrent and overvoltage protector according to claim 1, it is characterized in that, the load is LED module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721615425.9U CN207603203U (en) | 2017-11-28 | 2017-11-28 | A kind of overcurrent and overvoltage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721615425.9U CN207603203U (en) | 2017-11-28 | 2017-11-28 | A kind of overcurrent and overvoltage protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207603203U true CN207603203U (en) | 2018-07-10 |
Family
ID=62761250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721615425.9U Active CN207603203U (en) | 2017-11-28 | 2017-11-28 | A kind of overcurrent and overvoltage protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207603203U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116017808A (en) * | 2023-03-27 | 2023-04-25 | 厦门普为光电科技有限公司 | Lighting device protection circuit with high voltage-resistant capability |
-
2017
- 2017-11-28 CN CN201721615425.9U patent/CN207603203U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116017808A (en) * | 2023-03-27 | 2023-04-25 | 厦门普为光电科技有限公司 | Lighting device protection circuit with high voltage-resistant capability |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 315400 no.cn8, Far East Industrial City, Yuyao City, Ningbo City, Zhejiang Province Patentee after: Ningbo Yaotai Optoelectronic Technology Co.,Ltd. Country or region after: China Address before: 315400 no.cn8, Far East Industrial City, Yuyao City, Ningbo City, Zhejiang Province Patentee before: Ningbo UTEC Electric Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |