Industry News

2020-08-14

What is difference between constant current and constant voltage?

1. Constant current: no matter how the load changes, the output current remains unchanged. If the ammeter is connected to the load in series and the voltmeter is connected in parallel, it will be found that the larger the internal resistance of the load is, the higher the output voltage is, and the ammeter indication remains unchanged. 2. Constant voltage: it is what we often call regula...

2019-08-23

Is it normal that the surface temperature of the triac dimmable led driver is very high

A few of our customer confused that the surface temperature is very high ( After 48 hours of operation, the temperature reaches about 82.2°) of our triac dimmable led driver. Is it due to poor quality? Is it due to poor quality? Most people would think so, but the opposite is true. In order to dissipate heat, our led driver will be filled with silicone on the top of the shell. After the glue is ap...

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

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...