Eight Tips to teach you to distinguish the merits of LED lamps

        Vicious competition in LED market price battle,a large number of unqualified

 products  has violated LED energy saving, long life,environmental protection and 

other real value,how to distiguish the merits of LED lamps, we should focus on the

 following aspects

1,look at the overall "power factor" lamp: power factor is low,illustrate the use of the

 driving power supply, circuit design is not good,will reduce the lamp service life greatly.

2,heat emission conditions - material, structure.the cooling of LED lamps is also very 

important,the same lamp power factor and the same quality beads, if the condition is 

not good, lamp work under high temperature, light attenuation will be very big, the ser

vice life of the lamp will reduce.

3,see beads quality: quality depends on the chip quality and packaging technology.

4, look at the driving power source,the service life of power supply is shorter compared 

to the other parts,the life of the power supply have impact on the overall life.design 

and material selection of power supply will determine the service life of the power supply.

5 Look at the light effection : the same beam power , the higher  light effection, the higher

 brightness.The same brightness .The smaller  power consumption,more energy saving.

6, power supply efficiency,power efficiency is higher, the smaller the power consumptiion,

the greater the power output.

7, is to see whether fine workmanship.

A good quality LED lighting, in addition to several major aspects mentioned above, but 

also according to the different  environment, there are various technical requirements,

 such as moisture-proof, dust-proof,antimagnetic, lightning protection etc..

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EUP15T-1HMC-0

TRIAC Multi-Current Dimming Driver Series

Features
 Multi-current driver supplied with Dip-switch
 Support Leading edge (TRIAC) and Trailing edge
(ELV) Dimmer
 Wide range voltage Input 40-240VAC
 The dimming curve smooth
 High efficiency up to 80%
 Output short circuit, over current and over
voltage protection.
 Suitable for indoor LED lighting application

Specification

  Model        EUP15T-1HMC-0

 

           Current              280mA    350mA    500mA    

           DC Voltage           15-42V  15-42V    15-30V  
 Output  
           Rated power          15W      15W      15W
   
           Current Accuracy     ±5%

           R & N (Max)          240mVp-p

           Channels             1

         

 Input     Voltage Range        40VAC – 240VAC

           Frequency Range      47 – 63Hz

           Efficiency(Typ)      80%

           Power Factor(Typ)    ≧0.5 (@230V)

           AC Current            0.5A@230VAC

           Leakage Current       <5mA/240VAC

           Inrush Current        15A at 230VAC

Protection  Short Circuit Close output, recovers after fault condition is removed            
            Over Voltage Close output, recovers after fault condition is removed             
            Over Current Hiccup mode, recovers after fault condition is removed

Function    Dimming       Triac/ELV

Others      Dimension     168(L) *39.4(W)*30 (H)mm

            G.W           130g

            Packing       470(L)*200(W)*220(H) mm；50Pcs/7.5kg/Carton

            Working temp. -20℃ ~ 50℃

Pls visit our online shop www.euchipsonline.com for more information         

0-10V Wall Panel controller

   Item: WALLDIM201

- 0-10V Wall Panel

- Input: 12-24VDC

- Channel: 1

- Output Current: 150mA

Model: WALLDIM201

Feature

- 0-10V signal controller

- With led indicator for 10 dimming level

- Using glass material, stylish appearance.

- can connect to LED 0-10V Dimmer.

- Can be installed in the wall, suitable for all types of wall boxes.

- 2 Channels version (WALLDIM202) and 3 Channels Version (WALLDIM203)

Specification

Supply voltage	12-24VDC
Output voltage	DC0 -10V
Output current	150mA
Static power	<1W
Output channel	1 channel
Product dimension	L86 Χ W86 Χ H10 mm
Packing size	L145 Χ W135Χ H48mm
Working temperature	-10-40 ℃
Net weight	95g
Gross weight	125g

Dimension

More information from: www.euchipsonline.com

A Central Lighting Control Device--DMX512 Controller

 More information from www.euchipsonline.com
 
   The DMX512 Controller is considered as best equipment that controls the light

 device for stage performance.With various features,the DMX 512 is regarded as

the most potent controlling device up to now. With the ability to control up to

512 channels at the same time.The controlling device can be of help in delivering

some cutting edge technological support in hosting and carrying out the light

shows.DMX 512 controller can add more benefits that are required for a party to

 hit the peaks.

   DMX 512 controller can assist the DJ to take over the event easily by planning

for the right kind of sequences.As the primary attribute in a Dj,Focus is one of

the things that is looked upon,Which is why it is important to avail the benifits

of the DMX 512 controller devices to automate the lighting process.

   Functions like connecting the controller through a USB interface can be of exl

lent benefits that can increase the value of the equipment.With the use of specia

l software apps the entire array of lighting sequences may be programed

to offer far better comfort for the DJ who is managing a show.
 
   It is necessary to bring into play a DMX 512 controller to design quite a few

version in light sequences that can create a far better effect on the party night

With light sequences of unique intensities the people can experience a wide range

of moods that are designed with the use of the patterns.

   By transforming the signals of each lighting device with the help of cables,

the automation of lighting can take place so as to provide the correct kind of

control on the party.

   It is essential to make the correct choice of selections when it comes to pick

the DMX 512 controllers as the benefits can differ greatly.

 

Three kind LED dimmer analysis

More information from www.euchipsonline.com

    Nowadays the common use LED dimmer : Triac/ELV dimmer,Led 0/1-10v dimmer,PWM 

dimmer,The working principle of other dimmer is to achieve LED dimming function through 

control of the output current and voltage,frequency size. 

  Pls see the detailed principle under various dimming mode

1 LED triac dimming  is used in incandescent lamp and energy saving lamp,is one of the most 

widely used  dimming modes in Led dimming.

Its working principle is that the input voltage waveform generates a tangential

output voltage waveform  by conducting angle shear wave,The application of the principle of 

tangential, can reduce the effective value of the output voltage.so as to reduce the common 

load  (resistive load) power.The advantages of triac dimmer is high efficiency, stable 

performance.

2 LED 0/1-10V dimmer ,the power supply design with control chip.0-10V dimmer,

 through the 0-10V voltage change, change the output current of the power source

when 0-10V dimmer modulate to 0V, down to current 0,the brightness of the light is

closed ( a switch role),when the 0-10V dimmer tune the maximum 10V, the output current will 

reach 100% power output, the brightness will also 100%.output voltage is constant

 1-10V dimming principle: as noted that, just a dimmer is 1-10V: when the resistance dimmer to 

minimum 1V,change the output current is 10%,as to 10V (at maximum), the output current will 

reach 100%power output, the brightness will also 100%. (output voltageis constant)

   Note: 1-10V has no a switching function.

3 PWM dimming power  digital dimming is also called PWM dimming, through the PWM wave to open 

and close the LED forward current to change the conduction time, in order to achieve the effect 

of brightness adjustment.The method is based on properties that  human eye is not sensitive to 

brightness scintillation. If the bright and dark  frequency exceeds 100Hz,the average brightness

 is seen by the human eye, instead of LED in the blink. PWM can adjust brightness by adjusting 

the proportion of time of dark and light,because the human eye to  more than 100Hz in the flicker 

of light, the perception of brightness is a cumulative process.

  

Led fluorescent lamp power supply mode

    Led fluorescent lamp power supply generally divided into two kinds:built-in

and external.

    The built-in type refers to the power supply can be placed inside the tubes.

  The biggest advantage of this built-in is can be made directly replace the

exsisting fluorescent lamp tube,without the need for any change.

    So the shape of build in is made into strip to be filled into

semicircular tube.

    Analysis of non isolated and isolated .

    Non isolated constant current power supply, non isolation refers to the 

load end and the input end is connected directly,so the risk of electric shock

load is touch.At present, the most used is non isolated buck type power supply.

       

      Alternating current rectification after DC high voltage

then the direct use of buck circuit for Buck and constant current control.Advantages of non isolated

constant current source is simple, index is high, its output current can be a number according to LED 

series parallel decision. But in most cases, the output current for it cannot be too large, the output 

voltage can not be too high.The advantage of  built-in power is the ability to directly  replace the 

existing fluorescent lamp using the inductance ballast, without the need to remove anything.

     Centralized external power  in order to get the maximum performance .It's best to

use centralized external power supply. The promotion of LED fluorescent lamp power 

supply places are government agencies, offices, shopping malls, schools, underground 

parking, subway and other places.

   Centralized refers to the AC/DC switching powersupply,,the use of a large power unified power 

supply, and eachfluorescent lamp using the constant current moduleseparate DC/DC. 

You can get the bet efficiency.

 More information from www.euchipsonline.com

  

   

   

The choice element of LED power

  Led is a kind of environmental friendly power.It is believed that every one

is

familiar with it.So,Do you know what is the choice factors? Let's look into the

Euchips LED dimming power .The following are the details

    Led is a kind of environmental friendly power.It is believed that every one

is

familiar with it.So,Do you know what is the choice factors? Let's look into the

Euchips LED dimming power .The following are the details.

  Leakage power -- LED is a one-way conductive light- emitting body.If there is

reverse current.It is called leakage.The leakage current of LED ,short 

service,Low price.

       Light angle--the light emitting angle is not the same according to various uses of Led power

Light emitting angle is special, the price is higher

The service life - different quality is the key of life.Life is decided by the

light fades.

      Chip: Chip is illuminant of LED , the price varies great according to different chip.

The length of chip indicate the size of the chip.  the quality of bigger LED chips is better than small. 

The price of the  chip size is proportional to it's size.

     
      Colloid: General epoxy resin,LED is more expensive with UV and fire retardant

, high-quality outdoor LED lighting should be UV and fire resistant.

Brightness - The price is different with different Led brightness. For the LED lamp LED should 

meet grade I standard laser.

Anti static ability : the stronger anti static ability of the LED, the longer service life of LED ,and higher 

prices.

Product information: www.euchipsonline.com