News

2019-07-09

What is the meaning of the UL class 2 led driver?

UL Class 2 led driver comply with standard UL1310, meaning output is considered safe to contact and no major safety protection is required at the LED / luminaire level. There is no risk of fire or electric shock. These switching power supply driver operate using less than 60 volts (dry) and 30 volts (wet), less than 5 amps, and less than 100 watts. Although safer, these lim...

2019-07-09

Does the triac/phase cut dimming led driver from Smarts Electronics have PWM output ?

Answer: Yes, there are three series of triac dimming led driver from Smarts, they are called as version 1.0, version 2.0 and version 3. Here is the general informations as below. Version 1.0 don’t have PWM output function. This series is the early type led driver which we developed around 2015. They are 3 year warranty and 12vdc 24vdc led driver design output, 100-130vac or 170-265vac. As the time...

2019-07-09

What is the different of IP67 and IP68?

IP67 refers to "Product has protection against dust and temporary immersion in water" . Smarts led driver transformer 12v always meet IP67 standard. Please note that don’t make our led driver to be in immerse water long time. IP68 refers to "Product has protection against dust and continuous immersion in water. Our currently ETL listed LED driver are unable to attain the IP68 rating...

2019-07-09

Constant Current & Constant Voltage

As we all know, there are two kinds of led driver, constant voltage and constant current. But what kind of LED driver do I choose it ? How can we distinguish between these two? 1. What is constant current led driver? Constant current LED drivers are designed for a designated range of output voltages and a fixed output current. It is can be used fo...

2019-07-09

Compatibility between triac dimming power supply and dimmer

Well known that triac dimming has a leading edge cut wave and a trailing edge cut wave, but more than 90% of the triac dimming power supply is uncompatible with the mainstream led driver dimmer on the market, nodes flicker or continuous flashing when the brightness is adjusted to less than 15% or less. Whether you are using leading edge or trailing edge control, it can be r...

2019-07-09

Common causes of the SCR dimmer damage?

SCR dimmers are widely used in the dimming system, but many users have encountered SCR be damaged when using phase cut dimming power supply. The following are 4 common causes of the SCR dimmer damage. ---Voltage breakdown. The SCR is damaged by the inability to withstand the voltage, there is a hole in the chip, which sometimes can be seen with a magnifying glass. The reaso...

2019-07-09

Methods to identify whether the LED dimming power supply is qualified

1) Slowly adjust the brightness from 0 to the brightest, and see if there is a sudden change in brightness to determine whether the dimming curve is linear. Linear dimming power supplies meet general usage requirements. 2) Change the dimming speed repeatedly, hear the whistling of the power supply, without whistling is qualified. 3) Adjust the light to the darkest, then turn of...

2019-07-09

Why led strip flash with triac dimmer dimming?

For TRIAC dimming LED strip, the biggest problem presently is the compatibility of the dimmer. Traditional original design of the TRIAC dimmer was to handle the power consumed by hundreds of watts of incandescent bulbs. Power consumption of LED strip smaller than 20W will interact with dimmers made of high-power switching devices. If the interaction between the triac dimmer and the ...

2019-07-09

What is PWM dimming of power supply?

Pulse width modulation (PWM) is a method through adjust to make the LED dimming power supply current to square wave, the pulse width is variable, and the modulation of the pulse width is converted into a time for modulating the continuous illumination of the LED lamp, at the same time, the input power is changed, thereby achieving energy saving and well dimming. The frequen...